The protection device of diesel engine
(57) Abstract:Use: automatic control system of diesel engine. The inventive input actuators change the mode 3 is connected to the output of the control device of a change in the mode 2. One of the inputs of the OR element 5 is connected to the output of the second sensor 4 and to the input of the time relay 6. Another input of the OR element 5 is connected to the output of the sensor parameter 1. The output of the OR element 5 is connected to the input of the control change mode 2, and the output of the time switch 6 is connected to the input of actuators stop 8. 1 Il. The invention relates to a regulating and control systems General purpose and can be used in automatic control systems of diesel engines.Known rotation speed regulator for an internal combustion engine, containing a speed sensor, a nonlinear element with a given threshold, summing element, the actuator, load cell and amplifier.A disadvantage of this device is its low reliability, which leads to undesirable stops diesel from the protection device.The aim of the invention is to increase reliability is a, the control unit changes the mode and the control device changes the mode, the input connected to the output device control mode is changed, added the second sensor element OR, time relay, the control unit stops and the actuator stop, and one of the inputs of the element OR is connected to the output of the second sensor and to the input of the time relay, the other input is connected to the sensor output parameter, the output element OR is connected to the input of the control change mode, and the output of the time relay is connected to the input of the control stop, the output of which is connected to the input of actuators stop.The drawing shows a block diagram of the protection device of the diesel.The protection device of a diesel engine includes a sensor parameter is 1, the control unit changes the mode 2, the control device changes the mode 3, the second sensor 4, item, OR 5, time relay 6, the control device stops 7 and the actuator stop 8.The input actuator changes the mode 3 is connected to the output of the control device of a change in the mode 2, one input of the OR element 5 is connected with V item OR 5 is connected to the input of the control mode change 2, and the output of the time switch 6 is connected to the input of the control stop 7, the output of which is connected to the input of actuators stop 8.The protection device of a diesel engine works as follows.When running the engine when the deviation of a specific parameter of the diesel engine for the prescribed limits is triggered, the sensor parameter is 1, the signal from which is supplied through the OR element 5 to the control unit changes the mode 2, which includes the control device changes the mode 3. If this stops the further the deviation parameter, the stop of the diesel engine does not occur. If the value of the deviation parameter for the prescribed limits continues to grow, that's when the second sensor 4, the signal from which is fed to the element OR 5, without changing the status of the device management mode change 2 and, accordingly, the actuator changes the mode 3, and via the time switch 6 is supplied to the control device stop 7, which includes the Executive unit of the stop 8, and diesel stops.In case of sensor failure parameter 1 and rejecting a certain parameter is outside the specified limits on the amount of the Charter of the device management mode change 2, which includes execution unit changes the mode 3. If for a time determined by the setpoint time relay 6, the deviation parameter decreases to values that ensure the return of the second sensor 4 in the initial state, then stop the diesel is not going to happen. If the value of the deviation parameter is reduced, the output time relay 6, a signal will appear, which will appear on the device control stop 7, which will include the Executive unit of the stop 8, and diesel will stop.Using the proposed scheme expands the function of the protection device of diesel engine - in case of failure of the sensor protection device, providing the change of the operation mode when running only the sensor device that provides a stop diesel, you can not only stop the diesel, and shall initially be the change violated mode, then if the value of the deviation parameter is not diminished by the stop of the diesel.Thus, the invention allows to reduce the number of stops diesel from the protection device. The PROTECTION DEVICE of a DIESEL engine containing the sensor parameter, the device pravasta change mode, characterized in that, to increase reliability, inputs of the second sensor element OR, time relay, the control unit stops and the actuator stop, and one of the inputs of the element OR is connected to the output of the second sensor and the input of the time relay, the other input is connected to the output of the first sensor, the output element OR is connected to the input of the control change mode, and the output of the time relay is connected to the input of the control stop, the output of which is connected to the input of the actuator stop.
FIELD: mechanical engineering; engines.
SUBSTANCE: invention relates to devices for disconnection of engines in case of emergency situations and to compression brakes of engine trucks. Device for emergency shutting down of internal combustion engine and deceleration of vehicle by engine contains member for closing section of intake pipe line, closing member position setter and compressed air source. Closing member position setter is made in form of crankshaft speed limit pickup, oil pressure drop pickup, cooling liquid temperature rise pickup, and engine retarder control pushbutton. Intake pipeline section closing member is made in form of spool series-connected by pneumatic cylinder, in upper part of which calibrated hole communicating with atmosphere is made with fuel-feed valve connected with fuel-feed main line and with each of above-indicated pickups through check valve, and signal lamp and with engineering retarder control pushbutton and is connected in series with compressed air source. Pickups and engine retarder control pushbutton are connected in parallel.
EFFECT: improved reliability and efficiency of engine in operation, enlarged functional capabilities.
FIELD: engines and pumps.
SUBSTANCE: invention relates to ICE application in various machines incorporating an electromechanical transmission. The proposed method of stabilising the ICE minimum specific fuel rate by automatically adjusting the ICE operating conditions via a feedback circuit connected to the electromechanical transmission components consists in presetting the engine shaft rpm corresponding to the minimum specific fuel consumption, measuring the said shaft rpm variation at varying outer moment of resistance, comparing the resulted value with the preset one, amplifying the difference signal and feeding it to the AC generator excitation current control circuit input to make the aforesaid moment to comply with that developed by ICE. Note that at the same time, the electric power accumulator output voltage is measured and compared with two preset levels. Given any departure from the aforesaid preset levels, a signal is generated to cut off the ICE in case the voltage exceeds the preset level, or to cut in the ICE in case the measured voltage is lower than the preset one that allows operating the ICE in intermittent service.
EFFECT: stabilisation of minimum specific fuel rate and optimisation of ICE operating conditions at varying electromechanical transmission engine loads, simpler ICE design.
2 cl, 2 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to automotive industry. Proposed method of diesel (1) control consists in generating automatic oscillation of fuel feed device (7). On a sensor (6) signal at load decrease to magnitude smaller than 30% of rated value the fuel feed device position pickup (7) is used to feed signal from speed automatic controller (10) of control unit (13) and frequency generator via current sinusoidal oscillations of amplitude and frequency oscillator (12). Said oscillator (12) is timed by crankshaft turn angle transducer (5) with its angular position. Invention covers also the diesel control at low feed and minimum stable rpm.
EFFECT: lower minimum stable rpm at load and idling.
2 cl, 4 dwg
FIELD: engines and pumps.
SUBSTANCE: claimed system comprises the device (100) to decreased the carbon emissions and carbon credit control server. The device (100) consists of the fuel data control module (110), idling limitation module (120), carbon dioxide emission limitation calculation module (130) and carbon credits conversion module (140). Note here that module (110) can define the fed fuel grade and volume and generate the data on measured volume of fed fuel. Besides, said module (110) can define the volume of consumed fuel, generate, store and control the data on fuel volume measurement. Module (120) can minimize the fuel feed into the engine for fuel consumption limitation at idling without fuel control pedal depression for a preset time interval. Besides, it normalizes the fuel feed at depression of said pedal. Module (130) can generate the data on reduction of the carbon dioxide emission. Module (140) can read off the data on reduction of carbon emission, index the history of economy value conversion and convert the carbon emissions to obtain the carbon credit. Carbon credit control serves can get the ID data on the user, the vehicle ID data, the data on carbon credit authenticity confirmation and the data on carbon emission reduction from appropriate device connected via data communication network. Besides, said server can generate and transfer the data to the carbon elision reduction device. This invention discloses the emitted carbon dioxide volume reduction in the vehicle and conversion of emissions into carbon credit.
EFFECT: decreased ejection of greenhouse gases of vehicles.
11 cl, 8 dwg
FIELD: engines and pumps.
SUBSTANCE: invention can be used in fuel feed systems of internal combustion engines (ICE), preferably of railway vehicles. Proposed device (1) for protection of plants has consumer (3), fuel tank (2), which is connected to consumer (3) by fuel pipeline (6), and installed in fuel pipeline (6) pneumatically actuated emergency shut-off valve (7), which in the locked position locks, while in the opened position opens fuel pipeline (6), herewith emergency shut-off valve (7) without actuation remains in its locked position or is automatically switched over into it. Shut-off valve (7) also has the possibility of actuation by electric or electromagnetic method, for this purpose it is connected to accumulator (17) of energy via electric circuit (18).
EFFECT: higher safety of the fuel feed system.
9 cl, 1 dwg
SUBSTANCE: invention relates to vehicles with start-stop system. Vehicle comprises engine and controller, which detects engine automatic shutdown locking condition, when estimate value of current, which will be required by vehicle electric loads, including climate control system, during engine automatic shutdown, exceeds threshold value of current. In response to detection of engine automatic shutdown condition controller prevents engine automatic shutdown.
EFFECT: increased driving comfort.
4 cl, 4 dwg
FIELD: engines and pumps.
SUBSTANCE: start locking circuit is designed for an operating tool with an internal combustion engine (20). The internal combustion engine (20) contains a cylinder (21) with a combustion chamber (25) and a control unit (60) to provide the engine operation. When the engine is running the combustion chamber (25) is supplied with combustion air and fuel, wherein the air-fuel mixture in the combustion chamber (25) is ignited with an ignition plug (26). A mode selection switch is designed for actuating the internal combustion engine (20) and has an operating position and a starting position for air-fuel enrichment. The braking unit (19) for locking is coupled with the tool operating body. When in the operating mode, the braking unit (19) for locking locks the operating body with a brake, and when in a standby condition, it unlocks the operating body without actuating the braking system. An operation transmitter is connected with the braking unit (19) for locking to detect the operating mode of the locking braking unit. There is a position sensor in the mode selection switch. The status signal for the operation transmitter (19) of the locking braking unit and the status signal for the position sensor of the mode selection switch are interconnected in such a way that the control unit (60) stops the engine operation in all cases when the mode selection switch is in the starting position, and the locking braking unit (19) is in its standby condition with the braking system off.
EFFECT: avoidance of the engine start with rich mixture without switching the locking braking unit on, as the locking braking unit locks and brakes the tool operating body.
12 cl, 5 dwg
FIELD: engines and pumps.
SUBSTANCE: methods for automatic stop and start of the engine are presented. In one embodiment, the method provides supply of water-containing fluid to closed intake valve of the cylinder when the engine is automatically switched off and idling, and at the subsequent start the supply of fuel into the cylinder after the execution of at least one suction stroke and the next exhaust stroke in the cylinder is performed.
EFFECT: emissions control at automatic engine re-start.
18 cl, 5 dwg