SU1513165A1 - Apparatus for cancelling operation of ic-engine cylinders - Google Patents

Abstract

The invention relates to engine construction and allows optimization of engine operating conditions (E) by switching on all cylinders D during load build-up. The device contains an all-mode regulator 1, connected by a pull 2 through the limit switch 3 and the cylinder (C) 4 of the delay unit with the rail of the disconnected fuel pump 8 and through the shutdown mechanism 9 with the rail of the fuel pump being disconnected 10. When the load is increased, the piston (R) 5 moves abruptly relative to C 4 of the delay unit and the air from the internal cavity C 4 does not have time to escape through the throttle 7 and due to the compression of air in the cavity P 5 moves together with C 4. Movement P 5 through the lever 11 is transmitted to the locking member 13. Through the organ 13 is carried out according to Acha oil to the mechanisms 9 and 16 shut off the fuel and air in cylinders 1 D. ZP f-ly, 2 ill.

Description

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FIELD OF THE INVENTION The invention relates to engine building, in particular to engine control systems for internal combustion engines.

The purpose of the invention is to optimize operating modes by turning on all engine cylinders during load build-up, as well as when starting the engine.

FIG. 1 shows a diagram of the device; in fig. 2 shows an embodiment of a delay unit.

at start-up. The cams of the shaft 20, acting through the shut-off mechanism 16 and the rocker 19 on the valve 17, provide the gas supply to the cylinders. Thus, when starting the engine all cylinders work, ensuring its reliable start.

After the engine has reached steady idle speed, the oil pumping pump 25 is turned off, and the oil from mechanisms 9 and 16 is drained off (the device contains an all-adjustable control, for example, with technological valves).

L torus 1, connected by a pull 2 through the limit switch 3 and the cylinder 4 of the delay unit, with a double-sided piston 5 placed inside to form a buttered sump. In so doing, the rail of the fuel pump 10 to be turned off 10 returns to the zero fuel supply position, and the shutdown mechanism 16 is not a variable-volume meter. The chambers of the reciprocating displaced volume are equipped with throttles 6 and 7, and the throttle 7 is made with a smaller working section. T ha 2 is connected to the rail of the non-shut off fuel pump 8, and through the fuel shut-off mechanism 9 to the rail of the fuel pump 10 to be switched off. 20 non-switchable cylinder cylinders operate

neither from cam to valve 17, leaving the latter in the closed position. Similarly, the gas distribution valves of other disconnected cylinders operate, and the fuel pump and gas distribution valve 11 arm are connected to one side of the piston 5 and the other through the rod 12 to the locking member 13. The stop valve 13 blocks the flow of oil from the pipeline 14 to the pipeline 15, which Connect the mechanisms for shutting off the fuel supply and valves 17 to the pump 18 with mechanisms 18. A shut-off mechanism for the valves 17 is installed between the rocker arm 19 and the camshaft 20.

in the mode determined by the specified speed and load mode, i.e., after starting, the engine automatically goes to work with a disconnected group of cylinders.

As the speed and load conditions of the engine increase, the regulator 1 pulls out from 2 and selects the gap a in the delay unit, after which the inner end of the cylinder 4 reaches

The pipeline 15 is connected to the pipeline 2Ij of the piston 5 and through the lever 11 acts

on, the valve body 13, opening the passage of the working fluid (oil). Oil 24

which, via check valves 22 and 23, is connected to the pump 18 for supplying oil to the oil line 24 of the engine. The device additionally contains an oil drainage nasi: 25, driven by an electric highway 24 through pipelines 14 and 15, is supplied to the mechanisms 9 and 16 of switching them off to the working position.

engine 26 and supplying 35 rbs; this turns on the fuel pump 10 of oil in the modes of start-up to the line 24 and gas distribution valves 17. Thus

sixteen

40

engine to the mechanisms. 9 and 16 of the fuel supply and valves shut off and gas distribution and in the main line 27 of the oil supply to the other cylinders of the engine through check valves 22 and 23.

The device works as follows.

Before starting the engine, the oil pumping pump 25 is turned on, which through line 21, the check valve 22 by the mine, stops the mechanisms, 9 and 16, are turned off. At the same time, the rails of the fuel pumps 8 and 10 are in the initial position corresponding to zero fuel supply to the cylinders, and the gas distribution valves 17 are in the position determined by the kinematics of the gas distribution mechanism and the phases of their operation. The engine is ready to run on all cylinders.

When starting the engine (from a starter or other mechanism), the regulator 1 of th 2 is through the limit switch 3 and the delay unit pulls out the rail of the disconnected fuel pump 8, and through the shutdown mechanism 9 - the rail of the fuel pump 10 to the value corresponding to the fuel supply

Thus, starting with a definite (predetermined and determined by the gap a) engine operation mode, all cylinders are turned on both for fuel supply and gas supply.

When the speed or load mode of the engine decreases, the regulator 1 returns to the initial position and, g5, from the moment of formation between the piston 5 and the cylinder 4 of the gap-delay unit, the locking member 13 closes the oil supply to the mechanism and the cylinders are turned off.

With a sharp change in the engine's operating mode in the direction of increasing the rotational speed and power (load) and moving the piston 5 relative to the cylinder 4 of the delay unit, the air from the 55 inner cavity of the cylinder does not have time

exit through the throttle 7 and due to the compression of air in the cavity, the piston 5 moves in conjunction with the cylinder 4 and through the lever 1 1 opens the start. The cams of the shaft 20, acting through the shut-off mechanism 16 and the rocker 19 on the valve 17, provide the gas supply to the cylinders. Thus, when starting the engine all cylinders work, ensuring its reliable start.

After the engine has reached steady idle speed, the oil pumping pump 25 is turned off, and the oil from mechanisms 9 and 16 is drained (for example, by technological closures), in

oil sump. In this case, the rail of the fuel pump 10 to be switched off returns to the zero fuel supply position, and the shutdown mechanism 16 does not transmit the reciprocating displaceable cylinders to the reciprocating movement.

gives reciprocating displaceable cylinders work

neither from cam to valve 17, leaving the latter in the closed position. Similarly, the gas distribution valves of other disconnected cylinders work, and the fuel pump and gas distribution valves are determined by the specified speed and load mode, i.e., after starting, the engine automatically switches to operation with a disconnected group of cylinders.

As the speed and load conditions of the engine increase, the regulator 1 pulls out from 2 and selects the gap a in the delay unit, after which the inner end of the cylinder 4 reaches

piston 5 and through the lever 11 acts

on, the valve body 13, opening the passage of the working fluid (oil). Oil

line 24 through pipelines 14 and 15 goes to the mechanisms 9 and 16, turning them off to the working position.

 This includes fuel pump 10 and gas distribution valves 17. Thus

Thus, starting with a definite (predetermined and determined by the gap a) engine operation mode, all cylinders are turned on both for fuel supply and gas supply.

When reducing the speed or load mode of the engine, the regulator 1 returns to the initial position 2 and, from the moment of forming between the piston 5 and the cylinder 4 of the block of the gap delays, the locking member 13 closes the oil supply to the shutdown mechanism and the cylinders are turned off.

With a sharp change in the engine operating mode in the direction of increasing the rotational speed and power (load) and moving the piston 5 relative to the cylinder 4 of the delay unit, the air from the internal cavity of the cylinder does not have time

exit through the throttle 7 and due to the compression of air in the cavity, the piston 5 moves along with the cylinder 4 and through the lever 1 1 of the opening and predetermined cylinders to supply the engine and stop the engine; to transfer the engine to work with the cylinders turned on or off in automatic mode.

Automatic transfer of the engine to a predetermined mode of operation simplifies engine management and reduces operational fuel consumption due to engine operation with the optimal amount of sub-engine.

Claims (2)

Invention Formula I. An engine cylinder shut-off device containing mechanisms for shutting off valve timing and fuel supply to a part of cylinders and a shut-off body kinematically connected with a thrust instills shut-off body 13, thereby bringing oil to mechanisms 9 and 16 off and turning on all engine cylinders to work. Thus, during a sudden load surge, all engine cylinders are automatically activated, which reduces the time of the transient process. When the load is relieved, the air from the internal cavity of the cylinder 4 of the delay unit leaves through the throttle 6 of the larger O-cylinder, depending on the cross-section, without exerting resistance overload and speed mode Paging 5 and, disabling the specified engine cylinders since the formation of the gap a. The limit switch 3, being, as a rule, an integral accessory of any diesel engine, in the known systems ensures the shutdown of engine cylinders for fuel injection. In case of emergency operation of the limit switch 3 and disengagement of the drive of the top-20 water, the rails of the fuel pump and the installation pump with the regulator of the first rail are melted in the hydraulic communication line of the grinding pumps 8 and 10 in the shut-off valve of the gas distribution corresponding to the zero supply of top-division and fuel supply with a pump, Lev, and at the same time through the lever 11, is characterized by the fact that, in order to optimize, the locking member 13, which enables the operation modes by switching off the cylinders both at the top of all engine cylinders during loading and at the gas supply, kinematic linkage of the locking eleleysleys guarantee of emergency stop of the hanger with a hard drive of the fuel rail the engine. the pump is made in the form of a two-armed lever with a delay unit in the form of a hollow one. Thus, the proposed AOR device of a cylinder closed from the ends, which is fixed, will allow to optimize the operating modes on the motor between the drive and the top engine, namely, to start the pouring pump and the double-sided piston, the engine with all cylinders turned on; placed inside the cylinder with the formation of the engine to operate on variable volume chamber chambers, with max idling and low loads connected to the piston with one of the shoulders of a twofold predetermined number of disabled cylinder levers, the other arm of which on fuel supply, and on gas with a locking body, to supply; to ensure the operation of the engine at full power and close to it with all operating cylinders; to ensure the inclusion of all cylinder40 ditch with a sharp load surge, regardless of the initial mode of operation; ensure shutdown of specified cylinders during load shedding; to ensure shutdown of all cylinders for fuel2. A device according to claim 1, characterized in that each variable volume chamber of a hollow cylinder communicates with the atmosphere through an additionally installed throttle, the variable volume throttle chamber located on the rail pump side being made with a working cross section smaller than the other cross section. cottage and given cylinders for gas supply and emergency engine stop; to transfer the engine to work with the cylinders turned on or off in automatic mode. Automatic transfer of the engine to a given mode of operation simplifies engine management and reduces operating fuel consumption due to engine operation with the optimal number of connected cylinders depending on the load and speed mode of operation. engine Invention Formula I. An engine cylinder shut-off device containing mechanisms for shutting off valve timing and fuel supply to a part of cylinders and a shut-off organ, kinematically connected with the throttle rod of the fuel pump and installed in the hydraulic communication line of the cylinder closed to the ends of the cylinder. between the drive and the rail of the fuel pump and the double-sided piston placed inside the cylinder with the formation of chambers of variable volume, the piston being connected to one of the double-arm arms, the other arm St - associated with a shut-off body, 2. A device according to claim 1, characterized in that each variable volume chamber of a hollow cylinder communicates with the atmosphere through an additionally installed throttle, the variable volume throttle chamber located on the rail pump side being made with a working cross section smaller than the other throttle section.