RU2780913C1 - Method and device for short-term forcing of tank power plant - Google Patents

Abstract

FIELD: engine building.

SUBSTANCE: invention relates to engine building, namely to devices for boosting internal combustion engines in order to improve throttle response. A device for short-term boosting of the tank power plant is proposed, containing a diesel engine 1, an engine start system with compressed air, an electronic control unit 14, an electromechanical fuel injection start angle corrector 13, a push button switch 15. gas, which is supplied from a high-pressure cylinder 5 with a manual shut-off valve to the air distributor 2 through line 6, which includes a pressure sensor 7, an electrically controlled valve 8, coarse 9 and fine 11 gas filters, a reducer 10 and a check valve 12, which prevents compressed air from entering the line 6 of natural gas, while the line of the system for starting the engine with compressed air contains a check valve 16, which prevents the flow of natural gas from entering the compressed air line.

EFFECT: invention makes it possible to increase the completeness of fuel combustion, increase the power of a diesel engine, reduce the dynamic loading of the engine, the rate of corrosion of parts of the power plant and the abrasive wear of parts of the cylinder-piston group, and also exclude engine oil flooding.

1 cl, 1 dwg

Description

The invention relates to engine building, namely to devices for boosting internal combustion engines in order to improve throttle response.

A known system for short-term boosting of the power plant of a tank with the supply of fuel and water to the intake manifold of the engine (Patent RU 182967 F02B 47/02, F02M 25/025, F02D 29/02. Published on 09/06/2018.), containing a turbo piston diesel engine with intake manifolds , an air system for starting the engine, equipped with air cylinders pneumatically connected to the air filter and a reduction gear, an electro-pneumatic valve, an electrically connected microswitch installed under the fuel supply pedal and the fuel supply pedal, an electronic control unit, vortex electromagnetic nozzles electrically connected to it and an electric fuel pump, water tank connected by pipelines to an electric liquid pump.

The disadvantage of this system is the impossibility of high-quality and uniform distribution of the fuel-water-air mixture over the engine cylinders on the intake stroke.

A known system for short-term forcing of the power plant of the tank with the supply of fuel and water to the intake manifold of the engine (Patent RU 191481 F02B 37/00, F02M 25/025, F02D 29/02. Published on 08/07/2019.), containing a turbo-piston diesel engine with intake manifolds , an air system for starting the engine, equipped with air cylinders pneumatically connected to the air filter and a reduction gear, an electro-pneumatic valve, an electrically connected microswitch installed under the fuel supply pedal, a fuel supply pedal, an electronic control unit, vortex electromagnetic nozzles electrically connected to it, placed in the intake manifold opposite the intake valves of the gas distribution and corresponding to the number of engine cylinders, an electric fuel pump, a water tank connected by pipelines to an electric liquid pump, a valve timing sensor electrically connected to an electronic control unit.

The disadvantage of this system is that the additionally injected fuel and water into the intake manifold of the engine when it enters the engine cylinders on the intake stroke causes a sharp increase in the maximum combustion pressure, which causes rigidity and instability of the engine.

The closest in technical essence and the achieved result is the system of short-term boosting of the tank power plant with a device for adjusting the fuel injection start angle (Patent RU 194935 F02B 47/00, F02M 25/025, F02D 29/02. Published on 30.12.2019.), containing turbo piston diesel engine with intake manifolds, engine air starting system equipped with air cylinders pneumatically connected to the air filter and reduction gear, electro-pneumatic valve, electrically connected microswitch installed under the fuel pedal, fuel pedal, electronic control unit, electrically connected to vortex electromagnetic injectors, an electric fuel pump, a water tank connected by pipelines to an electric liquid pump, a gas distribution phase matching sensor electrically connected to an electronic control unit, an electromechanical fuel injection start angle corrector, mechanically connected with engine crankshaft and high pressure fuel pump, as well as electrically connected to the electronic control unit.

The disadvantage of this system is its low efficiency due to the use of water, which contributes to:

acceleration of corrosion processes and increased abrasive wear of parts of the cylinder-piston group, consequently, an increase in the rate of consumption of the engine resource;

flooding of engine oil, therefore, to its premature "aging";

increase in the dynamic load of the engine.

In addition, water is prone to freezing at low ambient temperatures.

The technical result of the claimed invention is to increase the efficiency of using the device for short-term boosting of the tank power plant due to:

reducing the rate of corrosion of parts of the power plant and abrasive wear of parts of the cylinder-piston group;

exclusion of flooding of engine oil;

reducing the dynamic load of the engine.

The technical result is achieved by the fact that the device for short-term boosting of the tank power plant contains: a diesel engine, an engine start system with compressed air, an electronic control unit, an electromechanical fuel injection start angle corrector, a push-button switch, while into the engine cylinders through the elements of the engine start system with compressed air natural gas is supplied from a high-pressure cylinder with a manual shut-off valve to the air distributor through a line that includes a pressure sensor, an electrically controlled valve, coarse and fine gas filters, a reducer and a check valve that prevents compressed air from entering the natural gas line, while the line of the system for starting the engine with compressed air contains a check valve, which excludes the ingress of natural gas flow into the compressed air line.

The invention is illustrated in the drawing, which shows a schematic diagram of the method and device for short-term forcing the power plant of the tank.

The proposed device for short-term forcing of the power plant of the tank contains: a diesel engine 1 with an air distributor 2 located on it, pipelines 3 connecting the air distributor 2 with valves 4 screwed into the heads of the engine blocks according to the number of cylinders, a high-pressure cylinder 5 for natural gas with a manual shut-off valve, a line gas supply to the air distributor, including a pressure sensor 7, an electrically controlled valve 8, a coarse gas filter 9, a reducer 10, a fine gas filter 11 connected in series by pipelines 6, a check valve 12, an electromechanical corrector for the fuel injection start angle 13, an electronic unit control 14, push-button switch 15, located in the right control lever for turning the tank (not shown in the figure), check valve 16, mounted in the line of the engine start system with compressed air (not shown in the figure).

The proposed device short-term forcing the power plant of the tank works as follows. When the engine is running at low loads and idling, as well as when the tank is moving at a limited speed, the proposed system is in the off state. In the event of a collision with the enemy, in order to change the firing position or worsen road and ground conditions during the march, requiring an increase in engine power above the established characteristic, the tank driver acts on the button switch 15, located in the right control lever for turning the tank, from which follows a command to the electronic control unit 14. If there is natural gas in the cylinder 5, which is controlled by a pressure sensor 7, the indicators of which are displayed on the gas pressure indicator located on the driver’s dashboard (not shown in the figure), the electronic control unit 14 generates signals: to open electrically controlled valve 8; to the electromechanical corrector of the fuel injection start angle 13. Natural gas from the cylinder 5 through pipelines 6 through the coarse gas filter 9 is supplied to the reducer 10, in which its pressure is reduced to the required value, and through the fine gas filter 11 enters the air distributor 2. The air distributor 2 natural gas is supplied through pipelines 3 through valves 4 to the engine cylinders in accordance with the order of their operation. The check valve 16 excludes the possibility of natural gas flow entering the engine start system with compressed air (not shown in the figure) when using a device for short-term forcing of the tank power plant, and the check valve 12 prevents air from entering the natural gas supply line when using the engine start system with compressed air.

If there is no need for further movement of the tank in forced mode, the driver releases the button switch 15, located in the right control lever for turning the tank, thereby signaling the electronic control unit 14 to stop the supply of natural gas to the engine cylinders.

Compared with the prototype, the proposed device for short-term boosting of the tank power plant provides an increase in the completeness of fuel combustion, an increase in the power of the diesel engine, a decrease in the dynamic load of the engine, the corrosion rate of the parts of the power plant and abrasive wear of the parts of the cylinder-piston group, and also eliminates engine oil flooding.

Claims (1)

A device for short-term forcing of a tank power plant, comprising: a diesel engine, an engine start system with compressed air, an electronic control unit, an electromechanical fuel injection start angle corrector, a push-button switch, characterized in that natural gas is supplied to the engine cylinders through elements of the engine start system with compressed air , which is supplied from a high-pressure cylinder with a manual shut-off valve to the air distributor through a line that includes a pressure sensor, an electrically controlled valve, coarse and fine gas filters, a reducer and a check valve that prevents compressed air from entering the natural gas line, while the engine start system line compressed air contains a check valve that prevents the natural gas flow from entering the compressed air line.

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