SU1416725A1 - Method and apparatus for controlling vehicle power plant - Google Patents

Abstract

The invention relates to engine building and permits an increase in the accuracy of control of the system by preventing the cyclic connection of the second engine (D). The vehicle control unit (CU) of the vehicle is connected with the throttle valves 7, 8 D 9, 10 of the power plant. An element 11 for changing the length of the cable, made in the form of a preloaded mobile street 12, is installed between the rods and is hydraulically connected to an electro-hydraulic valve 16 installed between the second connection unit 13 and the element 11. The inputs of the unit are connected to microswitches 14 and 15 connecting and disconnecting the second D. If it is necessary to increase the power more than that which can be developed by the D 9 with the damper 8 open, the stop will start up, increasing the resistance to the OU displacement. Upon further movement of the op-amp, the stop interacts with the microswitch 14, which generates a signal for switching on D 10. After connecting D 10, the resistance to displacement of the op-amp is reduced to its original value. In this case, the load is automatically redistributed between D 9 and 10. At low loads, the microswitch 15 provides a D 10 shutdown. and 1 z.p. f-ly, 1 ill. at

Description

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The invention relates to engine construction, in particular, to the management of power plants consisting of several engines.

The aim of the invention is to improve the control accuracy by preventing the second motor from cycling.

The drawing shows a diagram of an apparatus for carrying out the proposed control method.

The control unit of the power plant of the vehicle contains a control unit 1 connected via pulls 2-6 to throttle valves 7, 8 of engines 9, 10, the propulsion unit 11 changing the pulling length with a movable preloaded stop 12, second engine connection unit 13 , microswitches 14, 15, electro-hydraulic valve 16.

An element 11 for changing the length of the cable is installed between the terminals 3, 4 and is hydraulically connected to the electrohydraulic valve 16. The inputs of the second engine connecting unit 13 are connected to microswitches 14 and 15, and the output to electrohydraulic valve 16.

The power plant consists of two internal combustion engines 9 and 10, crankshafts 17 and 18 of which, via gears 19 and 20 and friction clutches 21 and 22, are connected to an auxiliary shaft 23. Shaft 23 is connected via friction clutch 24 to box primary shaft 25 gears. Engines 9 and 10 have individual ignition systems 26 and 27 associated with the output of block 13

cheni second engine. Friction, g conditions, at the request of the driver 45

The clutches 21 and 22 are also electrically connected to the output of the second engine connecting unit 13.

The operation of the power plant is controlled as follows .40

By moving the steering unit 1 through the pull-rods 2-4, set the throttle valve 8 of the engine 9 to the position required to obtain the required power. The shaft 17 of the engine 9 is connected via friction clutches 21 to 24 to the main shaft 25 of the gearbox. Engine 10 is at this time stopped.

If the required power is greater than that which the engine 9 can develop, i.e. the throttle valve 8 is fully open, 50 connect the engine 10.

The motor 10 is connected by turning on its ignition system 27 and closing the friction clutch 22. Moreover, with the throttle valve 8 fully open, a previously loaded stop 12 comes into operation, increasing the resistance to movement of the control element 1. With further movement of the vehicle, when it feels the need to turn on another engine. The shutdown of one of the engines occurs automatically when the driver in the vehicle's driving conditions releases the power unit control pedal at least briefly. This eliminates the cyclical operation of the engines and thereby reduces the loss of energy expended in starting the stopped engine.

Claims (3)

1. A method of controlling a power plant of a vehicle by connecting a second internal combustion engine to a load consumer in the event that the first engine's required power increases above a predetermined level, adjusting power by moving the control member and affecting the throttle valves of the engines, increasing the resistance to movement of the organ control at the time of connecting the second engine, redistribution of load 0 five 0 five 0 At 1 control, the stop 12 communicates with the microswitch 14, which generates a signal for switching on the engine 10. During the movement of the control element 1 with the indicated resistance, the power of the operating engine 9 is maintained at the same level until the engine 10 is turned on. After receiving a signal from microswitch 14, block 13 generates signals to turn on engine ignition system 27, close clutch 22 and turn on electrohydraulic valve 16, which supplies fluid to thrust element 11, the total length of which r 3 and 4 The resistance to movement of the control unit 1 is removed and the load is redistributed, i.e. the load on the engine 9 decreases and the load on the engine 10 increases. Microswitch 15 provides a shutdown of the engine 10 at low loads. At the same time, receiving the signal of the microswitch 15 by the block 13 causes the ignition system 27, the friction clutch 22 to be switched off and the electrohydraulic valve 16 to be turned off. The valve 16 turns off the element 11 for changing the length of the torque from the fluid source, which ensures a decrease in the total length of tons 3 and 4 and respectively, the complete closure of the throttle valve 7 and the opening of the large value of the throttle valve 8. Management of the power plant of the vehicle in this way ensures the efficient operation of its engines. Their inclusion does not occur under accidental circumstances, but under certain conditions. five 0 0 five tailor when he feels the need to turn on another engine. The shutdown of one of the engines occurs automatically when the driver in the vehicle's driving conditions releases the power unit control pedal at least briefly. This eliminates the cyclical operation of the engines and thereby reduces the loss of energy expended in starting the stopped engine. Invention Formula 1. A method of controlling a power plant of a vehicle by connecting a second internal combustion engine to a load consumer in the event that the first engine's required power increases above a predetermined level, adjusting power by moving the control member and affecting the throttle valves of the engines, increasing the resistance to movement of the organ control at the time of connecting the second engine, redistribution of load between engines, a reduction in the power of the first engine, characterized in that, in order to increase the control accuracy by preventing the second engine from cycling, the increase in resistance to movement of the control element is made in steps. 2. A method according to claim 1, characterized in that after connecting the second engine, the resistance to movement of the control member is reduced to its original value. 3. A vehicle power plant control device containing a control element connected through thrusts and a throttle valve change element with two engines, a second engine connection unit whose inputs are connected to a first and second micro five switches connecting and disconnecting the second engine, and the output is connected to the element changing the length of the rod, and the second microswitch is installed with the ability to interact with the throttle dampers, characterized in that, in order to increase the control accuracy by preventing the second engine from cycling, the device equipped with an electro-hydraulic valve connected between the second engine connecting unit and the thrust length change element, the thrust length change element is designed as a preliminary movably loaded movable stop installed with the possibility of interaction with the first microswitch, and the electro-hydraulic valve is hydraulically connected to the element of changing the length of the string.