Automatic transmission hydraulic system with electronic range selection and fault control

FIELD: transport.

SUBSTANCE: proposed system comprises compressed hydro fluid source communicated with transmission range selection subsystem (ETRS). ETRS subsystem comprises ETRS valve, packing mechanism, first and second mode valves, retention valve assembly and multiple solenoids. ETRS subsystem allows multiple operating conditions in multiple potential faulty states.

EFFECT: higher efficiency and response in control.

10 cl, 4 dwg

 

The invention relates to a control system for automatic transmission and, in particular, to an electro-hydraulic control system with electronic range select transmission with mode control failure.

A typical automatic transmission includes a hydraulic control system, which is used for cooling and lubrication of components in the transmission and to actuate multiple devices transmit torque. These devices transmit torque, for example, can be friction clutches and brakes are done with gears or torque Converter. Conventional hydraulic control system generally includes a main pump which delivers fluid under pressure, such as oil, in many valves and solenoids in the valve Assembly. The main pump is driven by the vehicle engine. Valves and solenoids made with the possibility of the direction of hydraulic fluid under pressure circuit of the hydraulic fluid to the various subsystems, including engine lubrication, engine radiator, engine clutch of the torque Converter and subsystem actuators switching, which include actuators that are injected into engagement device per the villas of torque. Hydraulic fluid under pressure supplied to the actuators of the switch, is used to introduce or withdraw from the engagement devices transmit torque to obtain different gear ratios.

Although previous hydraulic control systems are suitable for their intended purpose, there is, essentially, a constant need for new and improved configurations of the hydraulic control system in transmissions, which have improved performance characteristics, particularly from the point of view of efficiency, responsiveness and smoothness. Therefore, there is a need for improved, cost-effective hydraulic control system for use in an automatic transmission with a hydraulic drive.

According to the invention created a hydraulic control system for the transmission. The hydraulic control system includes a source of hydraulic fluid under pressure which communicates with the electronic subsystem selection of the transmission range (ETRS). The ETRS subsystem includes the ETRS valve, the mechanism is installed on the Parking lot, the first and second valve nodes of the mode valve the fixing unit and many of the solenoids. The ETRS subsystem configured to provide the required operating States during the set p. the potential States of disrepair.

Thus, according to the invention created a hydraulic control system for a transmission having a hydraulically actuated device to enable operation mode "Parking" mode "Movement", while the transmission has multiple devices transmission of torque, gear selectively to provide at least one gear ratio of a forward stroke and at least one gear ratio in reverse mode "Movement", and the hydraulic control system includes: a source providing hydraulic fluid under pressure; valve range at the bottom for liquid flow communication with a source, a floating between at least the first position and the second position, and hydraulic fluid under pressure is transmitted hydraulically actuated device to activate the Motion, when the valve range is in the second position, hydraulic fluid under pressure is diverted from the hydraulically actuated device to activate "Parking", when the valve range is in the first position; a first valve at the bottom for liquid flow communication with a source that is moved between at least the first position and the second position is receiving; a second valve at the bottom for liquid flow communication with the first valve, movable between at least a first position and a second position; at least one actuator of the clutch in the lower stream in fluid communication with the second valve is arranged to engage one of the devices transmit torque to ensure the gear ratio in reverse when receiving hydraulic fluid under pressure; at least one second actuator coupling at the bottom for liquid flow communication with the second valve is arranged to engage one of the devices transmit torque to ensure the gear ratio front course admission of hydraulic fluid under pressure; a first motion path, transmitting hydraulic fluid under pressure from the first valve to the second actuator coupling and valve range to hold the valve range in the second position when the first valve is in the first position and the second valve is in the second position; a second motion path, transmitting hydraulic fluid under pressure from the first valve to the second actuator coupling and valve range to hold the valve range in the second situation the AI, when the first valve is in the second position and the second valve is in the first position; and an outline of the reverse conveying hydraulic fluid under pressure from the first valve to the first actuator coupling, transmitting hydraulic fluid under pressure from the first valve to the valve range to hold the valve range in the second position, and transmitting hydraulic fluid under pressure to the first valve to hold the first valve in the second position when the first valve is in the second position and the second valve is in the second position.

Preferably, the system further comprises a circuit commit transmitting hydraulic fluid under pressure from the first valve through the second valve at the end of the first valve to hold the second valve from moving before the first valve when the first valve is in the first position and the second valve is in the second position.

Preferably, the system further comprises a valve release at the bottom for liquid flow communication with a source that is moved between at least the first position and the second position, and hydraulic fluid under pressure is passed through the valve release on the second end of the second valve for PrimeMinister valve in the first position, when the valve release is in the first position, prevents the transfer of hydraulic fluid under pressure through the valve release, when the valve release is in the second position.

Preferably, the system further comprises a second solenoid valve in the bottom in liquid flow communication with a source of hydraulic fluid under pressure, and the second solenoid valve when it is open, passes hydraulic fluid under pressure to the valve release to move the valve to release the second position and transmits hydraulic fluid under pressure to the second valve to move the second valve to the second position.

Preferably, the system further comprises a first solenoid valve in the bottom in liquid flow communication with the source, and the first solenoid valve when it is open, passes hydraulic fluid under pressure to the first valve to move the first valve to the second position.

Preferably, the system further comprises a first bias element in contact with the end face of the first valve to bias the first valve in the first position and optionally containing a second bias element in contact with the end face of the second valve to bias the second valve in p is pout position.

Preferably, the system further comprises a solenoid "Movement" at the bottom for liquid flow communication with a source of hydraulic fluid under pressure, and the solenoid "Movement"when it is open, passes hydraulic fluid under pressure to the valve range to move the valve range in the second position.

Preferably, the system further comprises a solenoid "Parking" at the bottom for liquid flow communication with a source of hydraulic fluid under pressure, and the solenoid "Parking", when it is open, passes hydraulic fluid under pressure to the valve range to move the valve range in the first position.

Preferably, the first motion path additionally transmits hydraulic fluid under pressure to the control subsystem torque Converter, when the first valve is in the first position and the second valve is in the second position.

Preferably, the second actuator clutch is engaged with the transmission device of torque, which is used to enable only the gear ratios front of turn.

Other characteristics, aspects and advantages of the present invention will become apparent in the references to the following description and accompanying drawings,in which like items are referenced to the same component, the element or attribute.

Drawings, described in this document are intended only for illustration purposes and are in no way intended to limit the scope of the present disclosure. In the drawings:

Figa-1D are a schematic of the hydraulic control system according to the principles of the present invention.

With combined reference to Figa-1D hydraulic control system according to the principles of the present invention is indicated generally by the reference position 100. The hydraulic system 100 is a control with the ability to control the mechanisms of transmission of torque, such as synchronizers, clutches and brakes in the transmission, as well as provide lubrication and cooling of the components in the transmission and control of torque Converter connected to the transmission. The hydraulic system 100 control contains many interconnected or hydraulically interconnected subsystems, including subsystem 102 of the pressure regulator subsystem 104 control torque Converter, subsystem 106 flow radiator subsystem 108 control lubricant subsystem 110 controls selection of the transmission range (ETRS) and subsystem 112 clutch.

As shown in Figa, subsystem 102 of the pressure regulator is configured to provide and control hydrauli eskay fluid 113 under pressure, such as the oil in the hydraulic system 100 controls. Subsystem 102 pressure regulator draws hydraulic fluid 113 of the pallet 114. The pallet 114 represents a tank or reservoir, located preferably at the bottom of the housing of the transmission in which the hydraulic fluid 113 is returned to and collected from the various components and areas of transmission. Hydraulic fluid 113 is fed from the tray 114 and is passed through the filter 116 of the tray and through the hydraulic system 100 control using pump 118. The pump 118 is driven preferably by a motor (not shown) and may represent, for example, gear pump, vane pump, screw pump, or any other positive displacement pump. The pump 118 includes an inlet window 120 and the outlet port 122. The inlet box 120 communicates with the sump 114 through the liquid pipe 124. The outlet box 122 transmits hydraulic fluid 113 under pressure in liquid tubing 126. Liquid tubing 126 is in communication with a spring-loaded one-way valve 128, a spring-loaded drain safety valve 130 and valve 132 of the pressure regulator. One-way valve 128 is used to selectively prevent hydraulic flow to the main pump 118, when the main pump 118 is not working. The relief valve 130 ustanavli which is set at a relatively high pressure, and if the pressure of the hydraulic fluid in the liquid line 126 exceeds this pressure, the safety valve 128 immediately opens to relieve and reduce the pressure of the hydraulic fluid.

Valve node 132 of the pressure regulator includes a window 132A-G. Box 132A is in communication with liquid pipeline 126. Window W is an exhaust port that communicates with the sump 114. Window S is in communication with the liquid pipe 134, which communicates with the liquid pipeline 124 (i.e. feeds back into the intake box 120 pump 118). Window 132D is in communication with liquid pipeline 126. Liquid window A is in communication with the liquid pipe 136 and through the hole 138 limit the flow of liquid pipeline 140. Liquid window 132F is in communication with liquid pipeline 140. Liquid pipeline 140 is divided into at least three parallel branches 140A, 140V and 140 C, and each has spaced holes in it A, B and C limit the flow of different sizes respectively, as shown in Figv. Finally, the window 132G is in communication with the liquid pipe 142.

Valve node 132 of the pressure regulator additionally comprises a valve 144, located slidable in the channel 146. The valve 144 is automatically Estet position to reset the excess flow from the fluid line 126 as long until it reaches the equalization of pressure between the set pressure and actual pressure. The valve 144 is regulated by the solenoid 148 variable drain which communicates with the liquid pipe 142. For example, the solenoid 148 sets the pressure fluid through the supply of hydraulic fluid under pressure in the box 132G for influencing the valve 144. Simultaneously, the fluid pressure from the fluid line 126 enters the window 132A and the effect on the opposite side of the valve 144. The alignment between the pressure set by the pressure from the solenoid 148 and the pressure in the pipe 126 is achieved when the valve 144 is moved and makes possible selective communication between the window 132D and window S, whereby venting pressure from the fluid line 126.

Liquid tubing 126 is also reported upstream valve block 132 of the pressure regulator with the one-way valve 150. One-way valve 150 provides fluid communication from the fluid line 126 to the fluid line 152 and prevents fluid communication from the fluid line 152 to the fluid line 126. Liquid tubing 152 is communicated with the valve node 154 flow limitation.

Valve node 154 flow limitation limits the maximum pressure of the hydraulic liquid is for subsystem 104 control torque Converter, subsystem 106 management radiator, and various solenoids control, as described below. Valve node 154 limited supply contains window 154A-F. Open S and 154F are in communication with the liquid pipe 136 and therefore the window A valve 132 of the pressure regulator. Window 154D is in communication with the liquid pipe 152. Open A, B and E are outlet ports that communicate with the sump 114.

Valve node 154 limited supply additionally includes a valve 156, located slidable in the channel 158. The valve 156 automatically changes position to reduce flow from the fluid line 152 (i.e., the line pressure from the pump 118) in the liquid pipe 136. For example, the valve 156 is shifted to the first position by a spring 160. In the first position, at least a partial flow of fluid from the pipe 152 is transmitted from the window 154D through the valve node 154 flow limitation in the window S and then in liquid tubing 136. When the pressure increase in the liquid line 136, the back pressure acting on the valve 156 through the window 154F, moves the valve 156 against the action of spring 160, thereby further reducing the pressure of the hydraulic fluid in the liquid line 136, until it reaches the equalization of pressure across the valve 156. By control the pressure in the liquid line 136, which is communicated through the valve 132 of the pressure regulator liquid pipe 140, the valve 154 limited supply controls the maximum pressure is fed to the subsystem 104 controls the torque Converter lock-up (TCC) and subsystem 108 control grease.

Subsystem 102 pressure regulator additionally comprises an alternative source of hydraulic fluid, which includes an auxiliary pump 170. Auxiliary pump 170 is preferably driven by an electric motor, a battery or other primary motor (not shown) and may represent, for example, gear pump, vane pump, screw pump, or any other positive displacement pump. Auxiliary pump 170 includes an inlet window 172 and outlet port 174. The inlet box 172 communicates with the sump 114 through the liquid pipe 176. The outlet box 174 transmits hydraulic fluid under pressure in liquid tubing 178. Liquid pipe 178 is in communication with a spring-loaded drain safety valve 180 and the one-way valve 182. Relief valve 180 is used to reduce the excess pressure in the liquid line 178 from the auxiliary pump 170. One-way valve 182 is in communication with the liquid pipe 152 and configured to flow the hydraulic fluid from the fluid line 178 in liquid tubing 152 and prevent the flow of hydraulic fluid from the fluid line 152 in liquid tubing 178. Therefore, under normal operating conditions to prevent back filling auxiliary pump 170 fluid flow from the pump 118 through a one-way valve 182. During the operation modes with high efficiency when the engine and therefore the pump 118 are dormant and put engages the auxiliary pump 170, prevents reverse filling pump 118 fluid flow from the auxiliary pump 170 through a one-way valve 150.

With particular reference to Figv, subsystem 104 TCC receives hydraulic fluid under pressure from valve block 154 limiting supply and valve block 132 of the pressure regulator for liquid pipeline 140. Subsystem 104 TCC contains valve 184 control TCC and the solenoid 186 which regulates the pressure in the torque Converter 188 and clutch 189 torque Converter.

Valve node 184 control TCC provides Windows 184A-M Box 184A and 184c, German are outlet ports that communicate with the sump 114. Each of the Windows 184I, 184J and 184K is in communication with branches 140A, 140V and 140 C liquid line 140, respectively. Window S communicates with the liquid pipe 185. Liquid pipeline 185 communicates with the switch 190 pressure control valve TCC. Window 184D communicates with the branch 140D fluid line 140. Window I reported before the enforcement drain valve 192, which produces hydraulic fluid under pressure when the torque Converter A included or entered into gear. Window 184F communicates with the torque Converter 188 through the liquid pipe 191. Open 184G and 184L are connected with the liquid pipe 196. Window 184H communicates with the torque Converter 188 through the liquid pipe 193. Finally, the window M communicates with the liquid pipe 198. Liquid pipeline 198 communicates with the solenoid 186 and with the torque Converter 188. The solenoid 186 is preferably a solenoid direct action with a variable force and high consumption, although there may be other types of actuators without deviation from the scope of the present disclosure. The solenoid 186 is made with the possibility of introducing engages clutch 189 of the torque Converter by means of the actuator 187 clutch.

Valve node 184 control TCC additionally includes a valve 200, located slidable in the channel 202. The valve 200 is actuated by the solenoid 186 which actuates the valve 200 against the action of spring 204. In the first position, when the valve 200 is shifted against the action of spring 204 (i.e. the position of the reset), hydraulic fluid from the fluid line 140 is directed along the branches 140A-b and holes A-IN on the on 184I and 184J, via a valve node 184 in the window 184H and then the torque Converter 188. The release of the torque Converter 188 is communicated through the pipeline 191 with window 184F valve block 184 control TCC from the window 184F with window 184G and forth subsystem 106 management radiator. The valve 200 is shifted against the spring force in the actuation of the solenoid 186. When increasing the pressure of the hydraulic fluid acting on the valve 200 from the window M using solenoid 186, exceeded the threshold, when the valve 200 is shifted against the action of spring 204. When the valve 200 is moved, hydraulic fluid from the fluid line 140 is directed along the branches 140A-C and holes A, thereby controlling the hydraulic fluid flow through the window 184H and therefore the flow of hydraulic fluid to the torque Converter 188. For example, when shifting the valve 200, the window 184K communicates with the window 184L, thereby venting the flow of the fluid line 140 in the liquid pipe 196 and the window 184J closes, thereby further reducing the flow of liquid into the window 184H. When the valve 200 will move completely against the action of the spring 204, the valve 200 removes the issue from the torque Converter 188 through the window 184F the window E, so that the hydraulic fluid exiting the torque Converter 188 is returned to the pallet 114 through valve 192. Therefore, the valve 184 is driven by what I SHH controls the flow of hydraulic fluid to the torque Converter 188 and subsystem 106 of the oil cooler.

Subsystem 106 management radiator includes oil cooler 210 and the oil filter 212 fine cleaning. Oil cooler 210 is in communication with the liquid pipe 196. Oil filter 212 is in communication with an oil cooler 210 and liquid pipeline 214. Liquid pipeline 214 contains three branches A, which communicate with the subsystem 108 control lubricant, and fourth branch 214D, which is communicated with the spring loaded one-way valve 216. Branch S contains a hole 215 limit the flow, or the hole override used to control the flow of fluid through the subsystem 108 lubrication, as described in more detail below. One-way valve 216 is connected with the liquid pipe 185. If the pressure of the hydraulic fluid in the liquid line 214D exceeds the threshold pressure, one-way valve 216 opens immediately to drop and reduce the pressure of hydraulic fluid in the liquid line 214D. Subsystem 106 management radiator additionally includes a spring-loaded drain relief valve 218, or located parallel to the oil filter 210, or made in one piece with oil filter 210, which allows hydraulic fluid to bypass the oil filter 210 in the case of noncompliant in the eye of the radiator. A drain valve 218 is fixed to the preset pressure, and, if the pressure of the hydraulic fluid in the liquid line 196 will exceed this pressure, a drain valve 218 opens immediately for increasing the flow of hydraulic fluid from subsystem 106 flow radiator.

Subsystem 108 control grease regulates the pressure of the fluid for lubrication as a function of the pressure in the pipeline, supplied from the pump 118 or auxiliary pump 170. Hydraulic fluid, adjustable subsystem 108 control lubricant lubricates and cools the various moving parts of the transmission and provides a source of hydraulic fluid for filling the centrifugal expansion joint couplings. Subsystem 108 control of the lubrication takes hydraulic fluid from the subsystem 106 flow radiator for liquid pipeline 214.

Subsystem 108 control valve lubricant contains the node 220 regulator lubrication and ball check valve 221. Ball check valve 221 contains three Windows A-C. Ball check valve 221 closes the window from the Windows A and B, which gives a lower hydraulic pressure, and provides communication between the window from the Windows A and B that has or gives a higher hydraulic pressure, and an outlet window S.

Valve node 220 regulator lubrication includes window A-. Window A communicates with the liquid pipe 126 and therefore takes the pressure from the pump 118. The window 220 communicates with the liquid pipeline 222. Liquid pipeline 222 contains two branches A and B. Branch A communicates with the subsystem 110 ETRS, and branch V communicates with the window W ball check valve 221. Open 220C and 220L are outlet ports that communicate with the sump 114. Window 220D reported with liquid pipeline A. Open E and 220H are connected with the liquid pipe 224. Liquid pipeline 224 includes a branch A, which communicates with the window A ball check valve 221. Open 220I and 220J are connected with the liquid pipe 140 and the switch 226 pressure. Finally, the window 220K communicates with the window S ball check valve 221.

Valve node 220 regulator lubrication additionally includes a valve 228, located slidable in the channel 230. The valve has a first end and a second end. Valve 228 has three functional positions: main regulating the position shown in Figa, additional regulating the position shown in Figv, and position override, shown in Figs. The valve 228 is moved between positions based on equilibrium of forces acting on each of the first end and the second end of the valve 228. The basic regulation the existing situation provides an output pressure through the liquid pipe 224, which is proportional to the pressure (i.e. the pressure in the liquid line 126). Mainly regulating the position of the pressure liquid through the pipe 126 enters the window A and acts on the end face of the valve 228 against the bias of the spring 235. When the valve 228 performs a move against the action of the spring 235, the window 220F communicates with the window E. Consequently, the flow of hydraulic fluid from the subsystem 106 of the heat sink is transferred from the fluid line W the window 220F, through valve 228 and of the liquid window E in liquid tubing 224. Back pressure from the fluid line 224 is transmitted through the branches A, through the ball check valve 221 and the valve node 220. The hydraulic fluid acts on the valve 228 and creates a leveling force against the action of the pressure in the pipeline, which keeps the valve 228 in the position of regulating fluid flow in liquid tubing 224. In addition, Windows 220I, 220J, 220C and 220G dismantled valve 228, which in turn maintains the pressure of the liquid in the liquid line 140 is high, which in turn allows the switch 226 pressure to perceive high pressure, thereby indicating that the valve 228 regulates the liquid flow to the liquid tubing 224.

If the fluid flow from subsystem 106 of the heat sink is significantly reduced, the pressure of Truboprovod, acting on the valve 228 of the fluid line 126, moves the valve 228 in the advanced position or the position of the progress made. In the accessory position not only increases the fluid flow from subsystem 106 of the radiator by opening 220F for Windows E, but is also a window message 220I with liquid window 220H. Consequently, the flow of fluid from the valve 154 flow limitation is transmitted to the valve 220 controls the liquid lubricant to the pipe 140, thereby increasing the fluid flow in the liquid line 224. Hole 237 restricting the flow of the liquid line 140 restricts the flow of hydraulic fluid to the valve 220 controls grease.

Finally, the position of the override is achieved by actuation of solenoid 240 (see Figs), which is in communication with liquid pipeline A. Position override is actuated during the low pressure in the pipeline (i.e. when the pump 118 operates at a reduced speed due to the idling of the engine). The solenoid 240 is a solenoid on/off, which is multiplexed with the subsystem 110 ETRS, as described in more detail below. The flow of hydraulic fluid from the solenoid 240, when it is enabled, is transmitted to the ball check valve 221 for liquid tubing is A. Ball check valve 221 prevents the admission of fluid flow from the solenoid 240V liquid tubing 224. When the fluid flow from the solenoid 240 is supplied in the box 220K, hydraulic fluid comes into contact with the valve 228 and, together with the spring 235 moves the valve to return to its original state. In the position of the override box 220F disjoined from the window E. However, the window 220G remains in the message window 220H. The fluid flow from subsystem 106 of the heat sink through the liquid pipe IS reduced by the relative small holes 215 override. In addition, the window 220D previously disjunct becomes communicating with window 220C. Therefore, the fluid flow from subsystem 106 of the heat sink are further reduced because the fluid flow is diverted through the branch A in 220D window, from the window 220D window 220C and from the window A in the pallet 114. Finally, the window 220J becomes communicating with window 220L, thereby allowing fluid flow from the valve 154 limiting supply of liquid through a pipe 140 to go into the sump 114. However, due to the grooves 243 gasket located in front of the direction switch 226 pressure, pressure drop between the switch 226 pressure and outlet box, 220p. The pressure drop experienced by the switch 226 pressure, confirms that the valve 228 is set to override. The position p is rapredelenie significantly reduces the flow of hydraulic fluid in the liquid pipe 224 and, therefore, driveline components, thereby reducing parasitic losses during the rotation. Position override is used when the conditions get of low power, such as engine idle.

The switch 226 pressure control valve lubricant and the switch 190 pressure control valve TCC interact to diagnose a stuck valve block 132 of the pressure regulator or stuck valve block 154 limiting supply. State without applied pressure is set TCC position valve block 184 control TCC and position override to lubricate the valve block 220 grease. On both switches 226, 190 pressure is supplied hydraulic fluid pressure which is generated valve node 154 limiting supply. Depending on the specific condition of the valve nodes 184, 220, both switches 226, 190 pressure, indicating the absence of pressure can be used as a diagnostic signal.

The following describes the subsystem 110 control ETRS, returning to Figs and with continuing reference to Figa and 1B. Subsystem 110 control ETRS uses hydraulic fluid under pressure from pump 118 or auxiliary pump 170 to the liquid pipe 152 to actuate range by subsystem 112 of the actuator coupling. Subsystem 11 management ETRS controlled by hydraulic fluid from the valve block 154 control limit feed liquid pipe 136. Subsystem 110 control ETRS includes the previously described solenoid 240, as well as three additional solenoid 242, 244 and 246. Each of the solenoids 240, 242, 244, 246 is a solenoid on-off switch with normally low pressure, each of which is supplied with hydraulic fluid through a liquid pipe 136. Liquid pipeline 136 additionally supplies the hydraulic fluid to the solenoid 148 (see Figa). The solenoids 240, 242, 244 and 246 are used to actuate the valve block 250 ETRS, valve block 252 release and first and second valve nodes 254, 256 mode.

Valve node 250 ETRS includes box 250A-H. Box 250A is connected with the liquid pipe A. Window 250V reported with liquid pipeline 260. Window S communicates with the liquid pipe 262. The 250D box communicates with the liquid pipe 152. Window E communicates with the liquid pipe 264. Window 250F communicates with the liquid pipe 266. Liquid pipeline 266 communicates with the solenoid 242. The 250G box represents one side of the outlet box, which communicates with the sump 114, which is used to improve the response time of the valve block 250 ETRS to return to its original state at the time of return to the position of "Parking" when very cold working conditions. Finally, the window 250H is an issue is knymi window, which communicates with the sump 114.

Valve node 250 ETRS additionally includes a valve 268, located slidable in the channel 270. The valve 268 is actuated position made progress or position Outside Parking" through solenoid 240 and through the hydraulic fluid acting on the valve 268 is supplied through the liquid pipe 262, and in a position to return to its original state or position "Parking" by the spring 272 or by hydraulic fluid acting on the valve 268 is supplied through the liquid pipe 266. In position Outside Parking" solenoid 240 is open, and fluid from the pipeline A comes in contact with the valve 268 and moves the valve 268 against the action of the spring 272. In addition, the fluid from the pipe 262, which is fed by line pressure through valves 254 and 256 mode and the fluid line 152, comes in contact with the valve 268, through the valve stroke. In this state, the window 250D communicates with the window E. Therefore, the hydraulic fluid pressure from the fluid line 152 is passed to the window 250D, from the window 250D through the valve node 250 ETRS in the window E and from the window E - liquid pipe 264. Liquid pipeline 264 communicates with sarvotham 276 "Parking". Hydraulic fluid enters Servotel 27 "Parking". Servotel 276 "Parking lot" includes the piston 278, which moves in contact with the hydraulic fluid, thereby mechanically deriving from the gearing system "Parking lot" (not shown). The node 281 solenoids prohibition "Parking lot" connected to seriously 276 "Parking". The node 281 solenoids prohibition "Parking" is a solenoid mechanical fixation to keep the system out of the state "Parking", if the operator wants the vehicle was moving when the engine is switched off. The node 281 solenoids prohibition "Parking" also includes preferably two switch positions, one mechanical and one on the Hall effect, which confirms the position of the system "Parking" the engine controller and the transmission controller, for use in diagnostic purposes.

In the position of "Parking" the solenoid 240 is closed and the solenoid 242 is opened, and the valve 268 is returned to its original state under the action of the spring 272 and through the hydraulic fluid supplied from the solenoid 242 pipeline 266. In this position the window HE communicates with the window 250H, and Servotel 276 "Parking" executes the release, thereby introducing into engagement system "Parking". The valve 268 is executed so that the spring 272 and the hydraulic fluid from the solenoid 242 overcome the forces acting on the valve 268, any one of the guide is ravlicheskoy fluid, supplied by the solenoid 240, and hydraulic fluid supplied through the liquid pipe 262. If there are both a source of hydraulic fluid, the forces acting on the valve 268 hydraulic fluid from the solenoid 240 and the hydraulic liquid supplied through the liquid pipe 262, overcome the forces acting on the valve 268 spring 272 and hydraulic fluid from the solenoid 242, thus ensuring that it can be overcome faulty signal. Management "Parking" is made so that, if lost all hydraulic pressure in the hydraulic system 100 control is engaged, the system "Parking".

The first valve node 254 mode includes box 254A-K. Window A communicates with the liquid pipe 280. Window 254V communicates with the liquid pipe 282. Window S communicates with the liquid pipe 152. Window 254D communicates with the liquid pipe 284. Window E communicates with the liquid pipe 286. Open 254F and 254J are outlet ports that communicate with the sump 114. Window 254G communicates with the liquid pipe 288. Window 254H communicates with the liquid pipe 290. Window 254I communicates with the branch 137 fluid line 136. Branch 137 communicates with the solenoid 244 and liquid pipe 136 through holes 291 flow. Window 254K communicates with the liquids is essential pipe 136 through holes 296 flow.

The first valve node 254 mode further comprises a valve 292, located slidable in the channel 293. The valve 292 is actuated by the solenoid 244 and a spring 294. When the solenoid 244 is open, fluid from the pipe 136 is passed through the solenoid 244 and moves the valve 292 against the action of the spring 294. Therefore, the valve 292 is moved between the position made progress when the spring 294 is compressed, and status return to the original state shown in Figs. Also against the spring 294 operates oil reverse (i.e. hydraulic fluid is used to initiate the state of the reverse), supplied in a box 254H reported through the liquid pipe 290, the second valve node 256 mode, the liquid pipe 286 and liquid tubing 284 from the valve block 250 ETRS. The valve 292 with a spring 294 is valid or oil removal from Parking lots, or the oil return to the Parking position, is passed through the liquid pipe 280 from the valve block 250 ETRS. In position made progress solenoid 244 is opened, and the liquid from the pipe 137 is in contact with the valve 292 and moves the valve 292 against the action of the spring 294. In this state, the window 254V communicates with the window 254J and performs a release window S and 254D communicate with the window A, window 254G communicates with the window 254F and executes the release, the window 254K closed.

In the position of the reset solenoid 244 is closed, and the valve 292 is located under the action of the spring 294 and hydraulic fluid from the pipe 280. In this position the window 254V communicates with the window S, Windows E and 254D communicate with the window 254F and perform the release, and the window 254G communicates with the window 254K. Therefore, as a result of implementation progress and return to the initial state of the valve 292 hydraulic fluid in liquid pipelines 282, 288 and liquid pipeline 286.

Valve node 252 commit mainly includes window A-that is, Open A and B are outlet ports that communicate with the sump 114. Window S reported with liquid pipeline 300. Window 252D communicates with the liquid pipe 280. Window HE reported with liquid pipeline 301, which in turn communicates with the solenoid 246. Valve node 252 fixation includes the valve 303, located slidable in the channel 305. The valve 303 is driven by a solenoid 246 and the spring 307. When the solenoid 246 is open, fluid from the pipe 136 is passed through the solenoid 246 and the pipe 301 and moves the valve 303 against the action of the spring 307. The valve 303 is moved between the position made progress when the spring 307 is compressed, shown in Figs, and return to its original state, is when the spring 307 is not compressed. In position made progress window S communicates with the window W and executes the release, and 252D box is blocked. In the position of the reset window S communicates with the window 252D. Valve node 252 commit is made to lock or entering into engagement with the second valve node 256 mode. As described in more detail below, the valve node 252 is used to override the provisions of the second valve block 256 mode.

Ball check valve 309 is located between the valve 250 ETRS valve 252 fixation. Ball check valve 309 includes three Windows 309A-N-Box 309A reported with liquid pipeline 260. Window W communicates with the liquid pipe 266. Window S communicates with the liquid pipe 280. Ball check valve 309 closes the window from the Windows 309A and V, which gives a lower hydraulic pressure, and provides communication between the window from the Windows 309A and V that has or gives greater hydraulic pressure, and an outlet window S.

The second valve node 256 mode includes box 256A-N. Open A, 256D, 256J and 256M are outlet ports that communicate with the sump 114. Window W reported with liquid pipeline 300. Open S and 256G communicated with liquid pipeline 302. Window E communicates with the liquid pipe 290. The 256F box communicates with the liquid the pipe 286. Window 256H communicates with the liquid pipe 282. Window 256I communicates with the liquid 311 pipeline that feeds the solenoid 186. Window 256K communicates with the liquid pipe 288. Window 256L reported with liquid pipeline 306. Window 256N reported with liquid pipeline 308.

The second valve node 256 mode additionally includes a valve 310, located slidable in the channel 312. The valve 310 is driven by a solenoid 246 through the valve 252 fixation and a spring 314 or directly through the liquid pipe 301 and the ball check valve 320. The valve 310 is moved between the position made progress, when compressed, the spring 314, shown in Figv, and return to its original state. When the solenoid 246 is open, hydraulic fluid is conveyed through the pipeline 301 on the second valve node 256 mode, and the valve node 252 fixation. The liquid is transmitted to the valve node 252 commit moves the valve 303 in its position made progress, thereby allowing messages from the solenoids 240 and 242 to side with the valve spring 310 of the second valve block 256 mode. If any of the solenoids 240 or 242 is open (i.e. powering the status "Out of place" or return to "Park"), the hydraulic fluid is transmitted through the ball back to the of apan 309, pipeline 280, via a valve node 252 fixation and second valve node 256 mode on the pipeline 300. This hydraulic fluid is then maintains the valve 310 in the second position. If the liquid from the solenoids 240 and 242 is not in contact with the valve 310, hydraulic fluid, coolant solenoid 246 moves the valve 310 in its position made progress.

In position made progress window S communicates with the window 256D, and executes a release window HE reported with 256F box, the box 256G locks, window 256I communicates with the window 256H, window 256J locks, window 256L reported with 256K window, and the window 256M is blocked. In the position of the reset window S locks, window E communicates with the window 256D, and executes a release window 256G reported with 256F box, the box 256H locks, window 256I communicates with the window 256J and executes the release, 256K window is locked and the window 256L communicates with the window 256M and performs the release.

In the oil circuit fixation is supplied hydraulic fluid through the fluid line 136, and it is determined by the liquid pipe 288, liquid pipeline 306, a ball check valve 320 and a liquid pipeline 308. Ball check valve 320 includes three Windows 320S-s Window 320S reported with liquid pipeline 301. Window 320V reported with liquid pipeline 306. Window S informs the I liquid pipeline 308. Ball check valve 320 closes the window from the Windows 320S and 320V, which gives a lower hydraulic pressure, and provides communication between the window from the Windows 320S and 320V, which has or delivers more hydraulic pressure, and an outlet window S. Hydraulic fluid under pressure is transmitted by circuit oil fixation of the pipe 136, when the first valve node 254 mode is set to return to its original state, and the second valve node 256 mode is in position made progress. Hydraulic fluid under pressure is passed from the pipe 136 through the first valve node 254 mode, the pipeline 288, through the second valve node 256 mode, the pipeline 306, through the ball check valve 320 and the pipe 308 for influencing the valve 310.

With reference to Fig.1D and continuing reference to Figs, subsystem 112 clutch delivers hydraulic fluid to the actuators 330A-E couplings. Actuators 330A-E clutches are hydraulically actuated pistons, each of which is engaged with one of the many devices transmit torque to achieve different gear ratios. The actuator A clutch includes two areas EA and 330Eb application. Each of the Executive mechanismo the 330A-E coupling is controlled by a solenoid 332A-F with a variable force, moreover, the actuator A clutch is controlled by two solenoids A and 332F with a variable force. This separate control of the actuating mechanism A clutch provides maximum flexibility for configuring characteristics of the torque couplings for a wide range of conditions switch with high torque and low torque.

The solenoid 332A is in communication with the liquid pipe 334 and liquid pipe 336. Liquid pipeline 334 communicates with a ball check valve 338. Ball check valve 338 includes three Windows A-s Window A communicates with the liquid pipe 290. Window W reported with liquid pipeline 340. Window S communicates with the liquid pipe 334. Ball check valve 338 closes the window from the Windows A and B, which gives a lower hydraulic pressure, and provides communication between the window from the Windows A and B that has or gives greater hydraulic pressure, and an outlet window S. Therefore, the solenoid 332A is supplied hydraulic fluid through the valves 254, 256 mode from the fluid line 152 (i.e. through or oil position "Movement", or oil position "reverse", so it can be communicated to the pressure only when the valves 254, 256 mode are located in the "Movement" or "Back the way"). Therefore, prevents the inadvertent inclusion of the transmission in "Neutral"if the solenoid clutch does not create high pressure. Liquid pipeline 336 supplies the hydraulic fluid from the solenoid 332A to the actuator switch 330A.

The solenoid B is in communication with liquid pipeline 340 and a liquid pipe 342. Liquid pipeline 340 communicates with a ball check valve 344. Ball check valve 344 includes three Windows A-s Window A reported with liquid pipeline 302. Window W communicates with the liquid pipe 311. Window S reported with liquid pipeline 340. Ball check valve 344 closes the window from the Windows A and B, which gives a lower hydraulic pressure, and provides communication between the window from the Windows A and B that has or gives a higher hydraulic pressure, and an outlet window S. Therefore, the solenoid B is supplied hydraulic fluid through the valves 254, 256 mode from the fluid line 152 (i.e. by means oil the provisions of the "Movement", so it can be communicated to the pressure only when the valves 254, 256 mode are set to "Motion"). Liquid pipeline 342 supplies the hydraulic fluid from the solenoid V to the actuator V switch.

Solenoids is in communication with liquid pipeline 340 and a liquid pipe 346. To the solenoid S is supplied hydraulic fluid through the valves 254, 256 mode from the fluid line 152 (i.e. by means oil the provisions of the "Movement", so it can be communicated to the pressure only when the valves 254, 256 mode are set to "Motion"). Liquid pipeline 346 supplies the hydraulic fluid from the solenoid S to the actuator 330C switch.

The solenoid 332D is in communication with the liquid pipe 152, and therefore supplied hydraulic fluid pressure delivered by the pump 118. The solenoid 332D passes hydraulic fluid to the actuator 330D switching liquid pipeline 348.

The solenoid E is in communication with the liquid pipe 152, and therefore supplied hydraulic fluid pressure delivered by the pump 118. The solenoid E transmits hydraulic fluid in the region EA switching liquid pipeline 350.

The solenoid 332F is in communication with the liquid pipe 152, and therefore supplied hydraulic fluid pressure delivered by the pump 118. The solenoid 332F transmits hydraulic fluid in the region 330Eb switching liquid pipeline 352.

On each of the actuators 330A-switching is served lubrication oil in the liquid pipe 224. Each of the solenoids 332A-F and actuators 330D-E switch performs the release of liquid through the pipeline 140. Relief valve 360 is in communication with liquid pipeline 140 is fixed to the preset pressure for regulating the pressure of hydraulic fluid in the liquid line 140. This ensures that the contours of the clutch remain full when they are not used to minimize the reaction time. In liquid tubing 140 is supplied to the oil pressure limiting supply. Each of the solenoids 332A-F is selected or as a normally closed or normally open, so that can be achieved only transfer the default in case of loss of electrical power. For example, if you want the sixth gear ratio as the speed of the forward stroke by default during power loss, solenoids 332A-selectable normally open and the solenoids 332D-F selects normally closed.

In addition, each of the liquid line 336, 342, 346, 348, 350 and 352, which nourish actuators 330A-F switch, includes hole 354, located parallel one-way valve 356. Orientation is a one-way valve 356 such that the one-way valve 356 allows the message actuators 330A-E coupling with the sole what oigami 332A-F and prevents fluid communication of the solenoids 332A-F with actuators 330A-E switch. This device controls the oil flow to the actuators 330A-E switch through holes 354.

A specific example of powering solenoids and enable coupling of the torque Converter shown below in Table 1.

Table 1
Solenoids
The steady-state condition244246242240TCC is enabled?Override oil?
Parking0010nono
Back1100nono
Neutral0001noYes
Movement with TSS0100Yesno
Movement with TSS0101YesYes
Movement without TCC1000nono
"0" indicates that the solenoid is closed, a "1" indicates that the solenoid is open.

Mode control malfunction is achieved using the first and second valve nodes 254, 256 mode and valve block 252 fixation. For example, if the operator of the vehicle is instructed on the back stroke, both valves 254 and 256 provide the course. When both of the first and second valve nodes 254, 256 mode will turn the flow of hydraulic fluid under pressure with the line pressure from the fluid line 152 (who reported directly to the subsystem 102 pressure regulator) is sent through the valves 254, 256, creating the I pressure circuit "reverse". Contour "Back up" is determined by the liquid piping 284, 286, 290, 334 and 336, which are served on the Executive mechanism 330A switch. In the mode of "reverse" the flow of hydraulic fluid also affects the signal end of the first valve block 254 mode through the liquid pipe 290 and the window 254H. Therefore, if there is a malfunction of the power supply, first returns to the initial state of the second valve node 256 mode. This eliminates the possibility of discharge of the hydraulic fluid in the path of Movement described below, while the command "Back". The flow of hydraulic fluid through the circuit "reverse" is also used to supply to the solenoid 332A to exclude reverse, if the solenoid 332A not "turn on" or open position "Neutral".

During the team's "Movement" from the operator of the vehicle hydraulic fluid under pressure must be supplied to the solenoids B and C to enter into engagement actuators V and 330C switch. Consequently, the hydraulic system 100 control defines two motion path, which serves both hydraulic fluid under pressure to the solenoids B and C. When the first valve node 254 mode is set to return to its original state and the second valve node 256 mode is set to the OS is destinova stroke (see Figs), hydraulic fluid from the line pressure from the fluid line 152 is served in the path Dvizhenie". Path Dvizhenie" is determined by the liquid piping 282, 311 and 340, which nourish the solenoids B and C. When the first valve node 254 regime is in position made progress and the second valve node 256 mode is set to return to its original state, the hydraulic fluid pressure from the fluid line 152 is served in the path Dvizhenie". Path Dvizhenie" is determined by the liquid piping 286, 302 and 340, which nourish the solenoids B and C. Both oils "Dvizhenie" and "Dvizhenie" unite in the path of Movement through three-way valve 344. The outline of the Motion, therefore, is a liquid pipelines 340, 334, 336 and 342. Ball check valve 344 prevents reverse flow in any of the paths Dvizhenie" or "Dvizhenie", when one is pressurized by hydraulic fluid. Path "Movement" is used for feed clutch, which is enabled only when the driver asks for "Movement", and also for submission to the Executive mechanism 330A toggle through the ball check valve 338. This is to prevent unintentional flow of power if the solenoids B and C clutch Only motion is" not included in the position "Neutral".

Two separate circuit oil "Movement", "Dvizhenie and Dvizhenie", designed to prevent operation of the car in Motion, if there is a malfunction of any one of the solenoids 244, 246, the first and second valve block 254, 256 mode or valve block 252 release. Only oil Dvizhenie" is supplied to the solenoid 186 to exclude that the solenoid 186 does not create high pressure and causes the engine stalls at low speeds of the vehicle due to the inclusion of the coupling 189 torque Converter. This condition may be excluded by the fault detection and command to "Dvizhenie", so that the solenoid 186 is not supplied oil under pressure.

In case of failure of a power outage, it is desirable that the hydraulic system 100 is recorded in the state of "Movement", if the driver has requested a "Movement"when the malfunction occurred. The driver can leave the state the Motion or the engine is off, or the range that is different from the "Movement"during which the engine control module (ECM) turns off the engine. Both actions lead to "Parking". Fixing the "Movement" is the direction of hydraulic fluid under pressure contour "Fixation" to signal the end of the second valve block 256 mode, when the first valve node 254 mode is set to return to its original state, and second valve node 256 mode is in position made progress. In the circuit "Fixation" is supplied hydraulic fluid under pressure from the valve 154 limitations of the feed liquid pipe 136, and it is determined by the liquid piping 288, 306 and 308, which transmit the hydraulic fluid in the box, 256N. Ball check valve 320 prevents reverse filling liquid into a liquid pipeline 301. Path "Fixation" supports the second valve node 256 mode in the state made progress, even if there is a malfunction of the electricity supply to the solenoids 246 244 with the normally low pressure. If the pressure in the circuit "Fixation" is not installed, when there is a malfunction of the power supply, the first and second valves 254, 256 mode return to their state return to its original state, and the hydraulic system 100 provides the status of Parking".

Valve node 252 release provides a means for bringing the second valve block 256 mode in its state reset state when the circuit Commit creates pressure, and the hydraulic fluid acts on the signal end of the second valve block 256 mode through the window 256N. This is desirable when applying a command for switching from the provisions of the "Movement" to "Parking" is whether the provisions of the "Movement" to "Neutral". To override the path "Fixation"on the solenoid 246 is shut off or closed, and valve node 252 release moves in his state return to its original state. It connects the path Outside Parking" (OOP) and component "Return to the Parking lot" (RTP) to the spring end of the second valve block 256 mode liquid through the pipeline W. In the circuit OOP is supplied hydraulic fluid under pressure from the valve 154 limitations of the feed liquid pipe 136, when the solenoid 240 is open. Contour OOP is determined by the liquid piping A, 260, 280 and 300. Ball check valve 309 prevents reverse the filling liquid in the path of the RTP. In the RTP circuit is supplied hydraulic fluid under pressure from the valve 154 limitations of the feed liquid pipe 136, when the solenoid 242 is open. The RTP circuit is determined by the liquid piping 266, 280 and 300. Ball check valve 309 prevents reverse the filling fluid in the circuit OOP. In the Neutral solenoid 240 is pressurized oil OOP. In the position of "Parking" the oil pressure RTP is created by the solenoid 242. Any one of these oils under pressure moves the second valve node 256 mode in its state return to its original state by means of a spring, overcoming the pressure of the hydraulic fluid in the circuit Commit. It returns the t first and second valve 254 nodes, 256 mode in their normal state in the position of "Parking" or "Neutral".

Two circuits create pressure circuit Commit "ETRS"which communicates with the signal region through the window S on the valve site 250 ETRS. Path Fixing ETRS" includes liquid pipe 262. Hydraulic fluid under pressure from the path Dvizhenie" and circuit "reverse" is transferred from the fluid line 340 and 284 respectively, ball check valve, the node 400. Ball check valve 400 includes three Windows 400A-N-Box 400A is connected with the liquid pipe 340. Window 400 is connected with the liquid pipe 284. Box 400C is connected with the liquid pipe 262 and therefore signal the end of the valve 250 ETRS through the window S. Ball check valve 400 closes the window from the Windows of 400 a and 400, which gives a lower hydraulic pressure, and provides communication between the window from the Windows of 400 a and 400, which has or takes the higher hydraulic pressure, and an outlet box 400C. This hydraulic fluid under pressure from the fluid line 340 or pipeline 284 provides that the valve node 250 ETRS remains in the state "Movement" even during a malfunction of the solenoid 240. In this circuit Commit ETRS" creates pressure when the hydraulic control system is located or in position DWI is giving" or "reverse". When the hydraulic system 100, the control is xed to the Motion, when there is a malfunction of the electricity supply in the "Movement", hydraulic fluid under pressure acting on the valve site 250 ETRS through the circuit Commit ETRS, holds the hydraulic system 100 controls from going into a state of "Parking". If the engine is off, the loss of hydraulic pressure in the hydraulic system 100 management translates the hydraulic system 100 control back into the state of "Parking".

Description of the invention is merely exemplary in nature, and it is assumed that the variants that do not depart from the essence of the invention, are within the scope of this invention. Such options should not be regarded as a departure from the essence and scope of this invention.

1. Hydraulic control system for a transmission having a hydraulically actuated device to enable operation mode "Parking" mode "Movement", while the transmission has multiple devices transmission of torque, gear selectively to provide at least one gear ratio of a forward stroke and at least one gear ratio in reverse mode "Movement", and the hydraulic system the Board provides: source providing hydraulic fluid under pressure, valve range at the bottom for liquid flow communication with a source that is moved between at least the first position and the second position, and hydraulic fluid under pressure is transmitted hydraulically actuated device to activate the Motion, when the valve range is in the second position, hydraulic fluid under pressure is diverted from the hydraulically actuated device to activate "Parking", when the valve range is in the first position, the first valve at the bottom for liquid flow communication with a source that is moved between at least first position and the second position, the second valve at the bottom for liquid flow communication with the first valve, movable between at least a first position and a second position, at least one actuator of the clutch in the lower stream in fluid communication with the second valve is arranged to engage one of the devices transmit torque to ensure the gear ratio in reverse when receiving hydraulic fluid under pressure; at least one second actuator coupling at the bottom for liquid flow communication with the second valve is configured to Zats the building of one of the transfer devices torque to ensure a ratio of a forward stroke when receiving hydraulic fluid under pressure; the first motion path, transmitting hydraulic fluid under pressure from the first valve to the second actuator coupling and valve range to hold the valve range in the second position when the first valve is in the first position and the second valve is in the second position; a second motion path, transmitting hydraulic fluid under pressure from the first valve to the second actuator coupling and valve range to hold the valve range in the second position when the first valve is in the second position and the second valve is in the first position; and an outline reverse, passing hydraulic fluid under pressure from the first valve to the first actuator coupling, transmitting hydraulic fluid under pressure from the first valve to the valve range to hold the valve range in the second position, and transmitting hydraulic fluid under pressure to the first valve to hold the first valve in the second position when the first valve is in the second position and the second valve is in the second position.

2. The system according to claim 1, additionally containing a circuit commit transmitting hydraulic fluid under pressure from the first valve through the second valve at orec first valve to hold the second valve from moving before the first valve, when the first valve is in the first position and the second valve is in the second position.

3. The system according to claim 2, additionally containing a valve release at the bottom for liquid flow communication with a source that is moved between at least the first position and the second position, and hydraulic fluid under pressure is passed through the valve release on the second end of the second valve to move the second valve to the first position when the valve release is in the first position, prevents the transfer of hydraulic fluid under pressure through the valve release, when the valve release is in the second position.

4. The system according to claim 3, further containing a second solenoid valve in the bottom in liquid flow communication with a source of hydraulic fluid under pressure, and the second solenoid valve when it is open, passes hydraulic fluid under pressure to the valve release to move the valve to release the second position and transmits hydraulic fluid under pressure to the second valve to move the second valve to the second position.

5. The system according to claim 1, additionally containing a first solenoid valve in the bottom in liquid flow communication with the East is cinecom, and the first solenoid valve when it is open, passes hydraulic fluid under pressure to the first valve to move the first valve to the second position.

6. The system according to claim 1, additionally containing the first bias element in contact with the end face of the first valve to bias the first valve in the first position and optionally containing a second bias element in contact with the end face of the second valve to bias the second valve to the first position.

7. The system according to claim 1, additionally containing solenoid "Movement" at the bottom for liquid flow communication with a source of hydraulic fluid under pressure, and the solenoid "Movement"when it is open, passes hydraulic fluid under pressure to the valve range to move the valve range in the second position.

8. The system according to claim 1, additionally containing solenoid "Parking" at the bottom for liquid flow communication with a source of hydraulic fluid under pressure, and the solenoid "Parking", when it is open, passes hydraulic fluid under pressure to the valve range to move the valve range in the first position.

9. The system according to claim 1, in which the first motion path additionally transmits hydraulic fluid under pressure to the control subsystem torque Converter is m, when the first valve is in the first position and the second valve is in the second position.

10. The system according to claim 1, in which the second actuator clutch is engaged with the transmission device of torque, which is used to enable only the gear ratios forward course.



 

Same patents:

FIELD: transport.

SUBSTANCE: proposed system comprises first source of pressurised hydraulic fluid source to produce first fluid flow and second source of pressurised hydraulic fluid source to produce second fluid flow, and torque converter control subsystem to control said converter and its coupling. Said subsystem comprises torque converter control valve and solenoid. Said solenoid is multiplexed to aforesaid control vale and coupling. Said control valve controls hydraulic fluid flow to torque converter and other subsystems in hydraulic control system.

EFFECT: higher efficiency and response in control, smooth control.

10 cl, 6 dwg

The invention relates to a control system variable speed drive designed, for example, for use in the infinitely-variable transmission

FIELD: transport.

SUBSTANCE: proposed system comprises first source of pressurised hydraulic fluid source to produce first fluid flow and second source of pressurised hydraulic fluid source to produce second fluid flow, and torque converter control subsystem to control said converter and its coupling. Said subsystem comprises torque converter control valve and solenoid. Said solenoid is multiplexed to aforesaid control vale and coupling. Said control valve controls hydraulic fluid flow to torque converter and other subsystems in hydraulic control system.

EFFECT: higher efficiency and response in control, smooth control.

10 cl, 6 dwg

FIELD: transport.

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EFFECT: higher efficiency and response in control.

10 cl, 4 dwg

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