Control over drive engine rpm

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises control means and detection means. Control means serve to control engine output power for driving the machine. Detection means allow identification of reverse conditions, motion speed and preset gear ratio. In reverse, control means vary output power by control over engine shaft rpm.

EFFECT: fuel savings.

3 cl, 7 dwg

 

The technical field

The present invention mainly relates to the management of the power output of the engine, driving a car, for example, to control the output power of the engine of the machine with the hydraulic drive.

The level of technology

In the technique known device power control machines with hydraulic drive, for example, crawler tractors, crawler loaders, excavators and the like. Also known device power control for control of caterpillar tracks pneumatic wheels. Creating a driving force as well as maneuvering machines known in the prior art. For example, from US 5967756 a device for electrohydraulic control system of the machine having a motor, which drives the pump of variable volume. Hydraulic system powered by electric motor driving the hydraulic pump and the hydraulic motor. Mainly used pumps of variable volume. Hydraulic motors can cause many work items, which can include a drive system, circular saw blades, rippers and other types of work items. For example, work items such mechanical shovels, which can be useful when performing a large number of diverse tasks, such as pipeline construction, mass excavation,digging pits, logging and other activities, can be controlled hydraulic engine driven hydraulic energy from the hydraulic system.

During operation of the working bodies, such as circular saws, leavening agents, and the like, needs hydraulic energy can be high. However, when working bodies are not in use, needs hydraulic energy is reduced, requiring low input power from the engine.

In the US 5967756, the pump of variable volume is used to control hydraulic flow in the hydraulic system, thus ensuring the ability to respond to changing needs in power. In addition, setting the number of revolutions of the engine is carried out to ensure operation of the engine at a given speed of rotation, to supply a predetermined power to the hydraulic system. The signal characterizing the number of revolutions of the engine and a signal characterizing the volumetric flow of the pump, compares and computes the optimal parameters for the speed of the motor and displacement pump.

The engine, known as the primary motor transmits the power hydraulic system with a hydraulic pump. The flow of energy in the hydraulic system should be adjustable depending on the speed of the motor, the enemy is surrounding the moment power and direction of rotation. Hydraulic pump associated with the engine, creates a hydraulic flow in order to drive the hydraulic motor associated with the working body, which is a load, ie, the power transmission drive systems. If the working volume of the pump or motor is constant, the input power from the engine is just passed to the load. If the pump variable volume possible constant torque. Torque of the motor is constant in any interval, because the torque depends on the pressure of the fluid and displacement of the motor. Increase or decrease the effective volume of the pump increases or decreases, respectively, the speed of the motor, while torque remains almost constant. Therefore, the power of the motor increases with increasing displacement of the pump.

In addition, you can use a hydraulic motor of variable displacement pump of constant displacement. This design is a transfer with constant power. If the input flow of the hydraulic motor is constant, and the working volume of the hydraulic motor is varied to maintain the product of speed and torque constant, the output power constant. The decrease in working on the EMA motor increases the speed of the motor, but reduces torque. This combination can maintain a constant torque on the motor.

Combining pumps variable displacement and hydraulic motors of variable volume in the hydraulic system is also possible and allows for the variation of torque as well as power in the motor.

Ensuring sufficient power from the engine to the hydraulic system, it is necessary in all applications. It is desirable to transmit the required power. In addition, it is desirable to maintain the input power as low as possible. The present invention aims to overcome some or all of the disadvantages associated with the prior art.

Summary of the invention

In accordance with one feature of the invention, an apparatus for controlling the motor. Controls can control the power output of the engine to drive the machine. Means of detection can identify the reverse movement of the mentioned machine. Management tools can be used to control the power output of the engine depending on the availability of reverse movement.

In accordance with another object of the invention proposed machine, equipped with controlled engine. The working machine can switch the diamonds in itself controls the power output of the engine. Working machine, in addition, may include means for detecting for the identification of reverse movement. Also, the working machine may include controls designed to control the power output of the engine in response to the identification of reverse movement.

In accordance with the following object of the invention is disclosed work machine, comprising the output power of the primary engine. The working machine may include means to control the output power of the primary engine. The machine also may include means for detecting the identification of the mode of its reverse movement. Controls can also be set for output power referred to a primary engine in response to the identification of the above-mentioned reverse movement.

In accordance with another object of the invention is disclosed a method of motor control. The method may include the output power of the motor which drives the machine. The method may include identification of the reverse movement of the mentioned machine. The method may include reducing the output power of the above-mentioned engine in response to the identification of the above-mentioned mode, the reverse motion is.

Other features and objects of this disclosure will become apparent from the following description and accompanying drawings.

Brief description of drawings

For a better understanding of this device, you can refer to accompanying drawings, in which:

figure 1 shows a block diagram of the hydraulic control system of the working machine;

figure 2 shows a block diagram of a system determine the preset number of revolutions of the engine;

figure 3 shows a graph of the settings specified number of engine revolutions in the function of a given configuration of ground speed;

figure 4 shows the graph settings speed in function of a given configuration of ground speed;

figure 5 shows a block diagram of another hydraulic control system for a working machine;

figure 6 shows the block diagram of another hydraulic control system for a working machine;

7 shows a functional diagram of the operation of the working machine according to the options implementation.

Detailed description

The present invention proposes a control algorithm of the primary engine of the working machine in which the engine speed is reduced when the working machine is reversed. This provides increased fuel economy and reduced noise in reverse mode. It was found that during the return area of the desktop is the Tcl machine required reduced hydraulic capacity. The working elements of the machine, which are driven by hydraulic system, mainly used in the direct course of the working machine. In reverse the course of the working bodies often do not work or have low activity. In other words, in the reverse mode of the machine working bodies do not need the full power implemented by the hydraulic system

The input power of the hydraulic system, transmitted from the engine can be reduced in reverse mode. Reducing the input power can be obtained by reducing the number of revolutions of the engine driving the hydraulic pumps. Engine management, as described below, the dependence of the tuning ground speed from setting the number of revolutions of the engine, and the dependence configure the maximum number of turns from setup ground speed can be carried out in accordance with the specific tasks. You can activate the control algorithm is defined by the user.

The described control algorithm enables the reduction of fuel consumption, as it was found that the working machine can work in reverse mode from 20 to 40% of full-time work. Provided 37% of the time using reverse mode, the fuel consumption can be reduced to 4%. The control algorithm, as will be described later, allows to reduce the consumption of t is Pliva.

Refer to figure 1, which shows a block diagram of the hydraulic system of the machine 100 in accordance with the invention. The hydraulic system 100 may be used in any type of hydraulically or electro-hydraulically controlled machine, for example, crawler tractors, crawler loaders, excavators or the like. The hydraulic system 100 includes an engine 102. The engine 102 may be, for example, an internal combustion engine, hybrid diesel-electric engine, or engine with electric, solar thermal engine, engine, fuel cell or the like. The engine 102 is the primary engine.

The motor 102 drives the one or more pumps 104, 106. The pumps 104, 106 can be pumps variable displacement or pumps a constant volume. The pumps 104, 106 serves the fluid through pipelines 108 high pressure to the motors 110, 112. The motors 110, 112 may be hydraulic motors, variable volume or motors constant working volume.

The pumps 104, 106 provide a high pressure fluid medium, for example, from 40 to 500 bar. The hydraulic motor 110 drives the working bodies 114. Working bodies 114 can be, for example, circular saw, or rippers, or working bodies of any other type.

The hydraulic motor 112 UE is to place the system 116 of the actuator stroke, for example, caterpillars or pneumatic wheels or any other means for providing forward and reverse movement of the working machine.

The hydraulic system contains, in addition, the sensor 118 the number of revolutions of the engine. The sensor 118 the number of revolutions of the engine is designed to measure the angular velocity of the engine, for example, the angular velocity of the shaft 120, to which the motor 102 drives the pumps 104, 106 with speed of up to 0-4000 rpm In practice, the shaft 120 of the motor 102 rotates at a speed 0-2500 rpm

The following shows the device 122 management. Device 122 controls can contain block 124 control the number of revolutions of the engine and the block 126 setting the number of revolutions of the engine.

The following shows the device 128 detection. Device 128 detection make it possible to identify the direct and reverse motion of the Executive bodies of the working machine. Device 128 detection associated with the instrument panel, which includes control knobs, levers of control, command control levers, control switches, control levers gearbox, stick shift, switching device of levers, buttons or the like. Device 128 detection allows the user to get information about the direction and ground speed or gear Rel is the solution. Among these parameters may be the current speed of the engine.

Additionally it also shows consumers 130, which represents the parasitic losses of the working machine. Consumers 130 can be, for example, the cooling fans engine 102, electric generators, and the like.

The sensor 118 the number of revolutions of the engine passes through the channel feedback signal to the unit 124 controls the engine speed by the signal line 132.

Block 124 receives the signal setting the number of revolutions of the engine from the block 126 via signal line 134. Block 126 setting the number of revolutions of the engine is taken from the device 128 detection on signal line 136, a signal of specified ground speed. The signal given ground speed can be set by the operator or algorithm device 128 detection. In addition, the signal line 138 block 126 setting engine speed may obtain additional information about setting the number of revolutions of the engine, for example, based on the overheating of the machine, on battery, on the position of the brake pedal, variables, depending on the number of revolutions, for example, for steering, and the like.

Upon receipt of the device 128 detection on signal line 136 signal indicating reverse mode, the block 126 setting the number of revolutions of the engine provides with irenie the number of revolutions of the engine block 124. Unit 124 compares the signal settings of the engine speed and actual engine speed is obtained from the sensor 118, and slows down or speeds up the engine 102. If the actual engine speed is higher than the alarm setting the number of revolutions of the engine, the rotational speed of the engine 102 is reduced. If the actual speed is lower than the signal setting the number of revolutions of the engine, the rotational speed of the engine 102 increases.

To set an alarm, configure the number of revolutions of the engine block 126 receives a signal line 136 signals preset ground speed, and the signal line 138 additional signals configure the number of revolutions of the engine.

Block 126 setting the number of revolutions of the engine shown in more detail in figure 2. Figure 2 presents the block 126 to the input signal lines 136, 138 and the output signal line 134. Through the input signal line 136 block 126 configuration receives signals preset ground speed. These signals can be set by the operator or device 128 detection. In addition, the signal line 136 unit 126 receives the signal indicating the reversal of the working machine.

Block 126 configuration engine sends the settings of the engine speed signal on line 136. To calculate the output signal Nast is configuring the number of revolutions of the engine block 126 includes a first block 202, the switching speed of the engine and the second block 204, the switching speed. After receiving a signal which indicates opposite the first block 202, the switching speed of the engine may decrease its output signal setting the number of revolutions of the engine, for example, from 2000 rpm to 1700 rpm

To configure a given ground speed obtained on the signal line 136, calculated output signal setting the number of revolutions of the engine, as shown in figure 3. As can be seen in figure 3, the signal setting the number of revolutions of the engine is shown depending on the setup of a given ground speed. The signal preset ground speed is formed in the first block 202 to determine the number of revolutions of the engine. For example, for direct movement speed putevyi+1, +2, +3, +4 require output signal settings of the engine speed 2000 rpm When receiving negative preset ground speed, which witnesses the return movement, the signal setting the number of revolutions of the engine can be reduced first to 1700 rpm At increase given ground speed in the reverse movement, the signal setting the number of revolutions of the engine increases due to the limited consumption of the pump. This provides a natural speed of movement of the machine inertia. The graph of figure 3, showing the configuration of a given ground speed as a function of setting the number of revolutions of the engine can be ccorrection the n for current needs. Also it may happen that the signal settings of the engine speed decreases to zero.

When you reduce the settings of the engine speed from 2000 rpm to 1700 rpm when receiving the signal reverse, the motor 102 rotates at a lower angular velocity, so there is less loss of energy. It was found that under conditions of reverse movement of the hydraulic motor 110 requires only a reduced energy, as working bodies 114 are not loaded. The power transmitted by the engine 102 may be used by the pump 106 and the motor 112 to system 116. This provides a speed equal to a given ground speed even at reduced engine speeds.

For enhanced customization capabilities of the hydraulic system 100, the second block 204, the switching speed of the engine may receive the signal line 138 additional signals configure the number of revolutions of the engine. The output of blocks 202, 204, the switching speed of the engine associated with the device 206 comparison. The device 206 comparison of two signals configure the number of revolutions of the engine, coming from blocks 202, 204, compares, and passed the minimum size. For example, block 206 of the comparisons is to use the minimum of the signal.

The output signal of block 206 comparison is used as a signal setting the number of revolutions of the motor on signal line 134.

Figure 1 in trojstvo 128 detection can use user-defined preset speed setting, known as the setting of the maximum speed. In order to transfer the setting of the maximum speed in the appropriate waypoint speed when setting maximum reverse speed equal to the maximum setting is direct ground speed in absolute value, it is desirable to display the setting of the maximum speed as the appropriate setting ground speed.

As shown in figure 4, the graph illustrates the image signal configure the maximum rate, signal settings, ground speed, which may be used in the device 128 detection. As shown, the signal setting the maximum speed can be displayed in the function of the corresponding signal setup ground speed. Line 404 represents the movement in the forward direction. Line 406 represents the movement in the reverse movement. Setting the maximum speed in the reverse movement according to the line 406 is different from the setting of the maximum speed in the forward movement, which is shown by line 404. Lines 404, 406 custom. For example, you can configure the maximum speed in the reverse movement in accordance with a given ground speed, by setting the number of revolutions of the engine in accordance with figure 3. It is also possible to use the estimates to calculate the signal setup ground speed signal us is the detuning of the maximum speed.

Figure 5 shows the hydraulic system 500 is similar to the hydraulic system 100. The hydraulic motor 112 to the control system 116 drives replaced here by motors 112a and 112b. The first motor 112a actuates the first system actuators 116a, and the second motor 112b actuates the second system 116b drives. The provision of two motors 112a, b for the two systems 116a, b of the actuators can be powered working machine with two independent axes.

Figure 6 shows the hydraulic system 600 is similar to the hydraulic system 100. In addition to the hydraulic system 100 of the hydraulic system 600 contains a limiter 602 speed. The limiter 602 speed included in the unit 102 configures the number of revolutions of the engine. As described above, the power settings of the engine speed adjusts the signal setting the number of revolutions of the engine in response to a signal given setup ground speed obtained by the signal lines 136, 138. Block 126 setting the number of revolutions of the engine can thus change the signal settings of the engine speed in response to changes in input signals. Change the signal settings of the engine speed may be limited. For example, you can restrict changes of the signal configuration engine rpm +500 rpm/sec when moving in the forward direction and -500 rpm/sec for reverse movement. Other nor the s constraints are also possible. It is possible to provide a limit on the rate is higher than 2000 rpm/sec.

Industrial applicability

7 shows a functional diagram of the hydraulic system 100.

When the engine 102 is started (700), the hydraulic system 100 is actuated. After the start (700) the detecting device 128 may act (702), to enter on the dashboard in the production machine, the signal of a given ground speed. The signal given ground speed is served in the block 126 setting the number of revolutions of the engine. In block 126 setting the number of revolutions of the engine, the received signal is estimated (704), as has been described in accordance with figure 2 and figure 3. The resulting signal setting the number of revolutions of the engine is supplied to the block 124. In block 124, the signal setting the number of revolutions of the engine is compared (706) with the actual speed of the engine obtained from the sensor 118, and the signal of the engine speed is set (712) to adjust the actual rotational speed of the engine at a given speed of rotation of the engine.

When the operator selects the inclusion in a production car in reverse, the signal indicative of the return movement, is determined (708) device 128 detection. The device 128 detection outputs a signal indicating a predetermined movement in the opposite direction. This signal (70) in block 126 setting the number of revolutions of the engine. After reception of this signal reverse block 126 setting the number of revolutions of the engine sets (712) the number of revolutions of the engine in accordance with the schedule shown in figure 3. For example, the signal setting the number of revolutions of the engine can be reduced from 2000 rpm to 1700 rpm Signal setting the number of revolutions of the engine is then converted by the block 124, and in response to this signal, the engine 102 reduces the speed to 1700 rpm instead of 2000 rpm/min

Mode flyback working bodies 114 may require only low hydraulic energy, because they are not loaded. Thus, even with the reduced rotation speed of the motor 112 can be provided with sufficient capacity for the system 116 drives to be powered working machine with a suitable ground speed. The operator does not notice that the engine 102 is running on low speed, because speed is equal to ground speed in direct motion. The engine 102 operates at reduced fuel consumption and reduced noise level. As the engine 102 operates at a reduced capacity, the parasitic loss of customers 130 may be reduced. For example, the fan motor can operate at a reduced speed, because the car needs less cooling. This may further reduce the power loss, since the parasitic loss of customers reduced one is belt driven with reduced power loss of the engine 102.

Although there is described the preferred embodiments of the present invention, improvements and modifications can be made without going beyond the limits of the following claims.

1. The device, containing
- controls the output power of the engine, intended for the propulsion of the machine; and
means of detection, intended to identify the mode reversal of the machine, and providing the output power of the above-mentioned motor when the identification of the above-mentioned reverse movement, characterized in that
the mentioned tools are designed for control of output power by using at least one of the parameters:
- given ground speed;
- the specified gear ratio of the transmission,
as a parameter for setting the number of revolutions of the engine.

2. The device according to claim 1, characterized in that the said machine is a hydraulic pump of the working machine.

3. The device according to claim 2, characterized in that the said hydraulic pump is designed to drive the hydraulic system of the working machine, having in its composition a hydraulic motor.

4. The device according to claim 1, characterized in that the said control means are designed to control the power output of the shackles of the m control by setting the number of revolutions of the engine.

5. The device according to claim 1, characterized in that the said control means are designed to control output power by reducing the above-mentioned configuration, the number of revolutions of the engine.

6. The device according to claim 1, characterized in that the said control means are designed to control the output power by adjusting the settings of the engine speed with the speed limit.

7. The device according to claim 4, characterized in that the mentioned setting the number of revolutions of the engine is setting the number of revolutions of the engine, further containing a means for comparing the settings of a given number of revolutions of the engine by setting the number of revolutions of the engine is obtained, at least one additional source setting the number of revolutions of the engine.

8. The device according to claim 7, characterized in that the said at least one additional source to adjust the number of revolutions of the engine is one of the options:
- set by the operator setting the number of revolutions of the engine;
- automatically setting the number of revolutions of the engine is idling;
variable, depending on the number of revolutions.

9. Working machine that contains the device according to claim 1.

10. The method includes:
- the output power of the engine driving the machine;
- identifiziert is of the reverse movement of the mentioned machines; and
- decrease the output power of the above-mentioned motor when the identification of the above-mentioned reverse movement, characterized in that
output power control by using at least one of the parameters:
- given ground speed;
- the specified gear ratio of the transmission,
as a parameter for setting the number of revolutions of the engine.

11. The method according to claim 10, wherein the output power control includes control of setting the number of revolutions of the engine.

12. The method according to claim 11, characterized in that the output power includes reducing the above-mentioned configuration, the number of revolutions of the engine.

13. The method according to claim 11, characterized in that the restriction amendments to configure the number of revolutions of the engine output power.

14. The method according to claim 10, characterized in that the comparison settings given number of revolutions of the engine by setting the number of revolutions of the engine, at least one additional source setting the number of revolutions of the engine.

15. The method according to claim 11, characterized in that it includes the management of the mentioned setting the number of revolutions of the engine by displaying the user-selected maximum ground speed as specified setup ground speed.



 

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2 dwg

FIELD: construction.

SUBSTANCE: device to control lifting-digging mechanisms comprises a compressor, an oil separator and a receiver, which are pneumatically connected to each other in series. The outlet of the receiver is pneumatically connected to inputs of adsorbers with evenly distributed heaters, and outlets of adsorbers are pneumatically connected to a consumer. The compressor is equipped with a suction filter. The filter is made in the form of a double-layer jacket with an air cavity, connected by a nozzle of input of heating regenerated air. Adsorbers are equipped with a thermoelectric generator comprising a through channel for regenerated air and a through channel for dried compressed air, inside of which there are accordingly hot and cold ends of a set of differential thermocouples.

EFFECT: reduced power inputs when producing compressed air of specified quality for a device of lifting-digging mechanisms control.

3 dwg

FIELD: construction.

SUBSTANCE: pump-accumulator hydraulic drive to rotate an earth-mover platform comprises a controlled pump, hydraulic distributors, safety and check valves, a hydraulic accumulator, a relay controller, connected to each other by hydraulic manifolds, and a controlled hydromotor. At the same time one of hydraulic distributors is installed between the controlled pump and the controlled hydromotor of platform rotation. Safety valves are valves with two adjustment pressures. The second hydraulic distributor is arranged between the controlled pump and the first hydraulic distributor, serving to change power streams from the controlled hydraulic pump to the hydraulic accumulator.

EFFECT: maximum use of kinetic energy of a rotary platform, reduced wear and lower loads in a mechanism of earth-mover platform rotation, reduced quantity of hydraulic scheme elements.

1 dwg

FIELD: machine building.

SUBSTANCE: proposed device comprises first and second engine openings communication L' and N' for communication with two-way hydraulic motor D, and openings M' and O' for communication with manual-control valve H. Besides, valve device comprises normally-closed proportioning load-adjustment valve E and check valve 12 with outlet communicated with aforesaid second opening N' and inlet communicated with opening O'. Note here that check valve 12 is pre-stressed for opening solely in case its inlet exceeds preset pressure range.

EFFECT: higher reliability.

1 cl, 7 dwg

FIELD: machine building.

SUBSTANCE: proposed device comprises first and second openings L and N in two-way hydraulic motor D, tank T, pump I, manual valve H and first retaining valve 1A, 8. Note here that manual valve is arranged to communicated openings L, N with tank T and pump I. Note here said valve H has two positions. In first position, pump I is communicated via pipeline F with first opening L while tank T communicates via pipeline G with second opening N. In second position, pump I communicates via pipeline G with second opening N while tank T is communicated via pipeline F with first opening L. Note here that first retaining valve 1A, 8 is arranged between pump I and second opening N to open toward second opening N. Besides, device comprises piston 2 to control first retaining vale 3 arranged to communicate first opening L with second opening N and to open toward second opening N.

EFFECT: higher efficiency.

9 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: method of controlling working mechanism includes the following stages: determination of maximum pressure of hydraulic fluid for independent fulfilment of certain task for, at least, one of operating functions; hydraulic fluid supply which pressure does not exceed certain maximum pressure for fulfilment of this operating function; and fluid pressure control with the aid of, at least, one control valve as pressure reducer connected with this operating function.

EFFECT: increase of operation efficiency in condition of large loads at mechanism operating component.

26 cl, 3 dwg

FIELD: transport.

SUBSTANCE: invention relates to definition of vehicle preset speeds. Proposed method includes the steps whereat horizon is defined with the help of positioning data and route map data, threshold magnitudes for road section description are calculated in compliance with one or more magnitudes, comparison of the gradient of every section and computation of preset speeds for automotive control systems using the data on horizon are executed. Additionally, deviations are added to designed preset speeds to adjust the vehicle speed in compliance with preset speed values. Proposed module comprises horizon unit and processor unit. Processor unit computes threshold values for gradient of sections in compliance with one or more magnitudes to compute preset speed magnitudes. Additionally, this unit can add deviations to designed preset speeds when vehicle is located at steep ascent or descent.

EFFECT: fuel savings.

16 cl, 6 dwg

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