RU2576689C1 - Method of controlling exhaust gas recycling in internal combustion engine using pneumatic drive system of two-valve gas distributor with charging of pneumatic accumulator of system with atmospheric air - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention relates to control recirculation of internal combustion engines (ICE). Invention consists in that the device comprises a control system, a gas distributor composed two valve timing and valve stem connection inlet and outlet valves. Control system in accordance with the defined current capacity of the engine determines the mass of the exhaust gas for combustion. When the piston engine from the bottom dead center on the exhaust stroke in the vicinity of the upper dead point in time when the in-cylinder engine will have some system of control mass of the exhaust gas for combustion establishes the connection inlet valve and outlet valve to a position in which the inlet valve is open and the outlet valve is closed. As a result, part of the exhaust gas remains in the cylinder, and at a subsequent suction stroke, or the air fuel mixture remaining in the cylinder exhaust gases are mixed with the internal combustion engine enters the cylinder through the open inlet and the gas control valve or fuel air mixture.

EFFECT: technical result is to increase the efficiency of the ICE.

1 cl, 1 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to the field of power engineering.

BACKGROUND

The closest prototype of the claimed invention is RF patent 2537323 "Method for controlling exhaust gas recirculation in an internal combustion engine by a hydraulic valve of a gas distribution valve."

Summary: “The invention relates to the field of engine manufacturing. The technical result is to increase the efficiency of the engine. The essence of the invention lies in the fact that it includes a control system for a hydraulic drive of a gas distribution valve, a spool for controlling a fluid flow, a hydraulic accumulator, a piston of a drive of a gas distribution valve and a gas distribution valve. The control system of the hydraulic drive of the gas distribution valve determines the mass of fuel, the mass of exhaust gases and the timing of the closing of the gas distribution valve of the internal combustion engine in accordance with the set current power of the internal combustion engine. At the time of exhaust exhaust from the cylinder of the internal combustion engine to a point in time determined by the control system of the hydraulic drive of the gas distribution valve, the fluid flow control valve supplies the working fluid from the hydraulic accumulator to the volume under the piston of the gas distribution valve drive. Therefore, the pressure of the working fluid by the piston of the gas distribution valve drive puts the gas distribution valve connected to it into the closed position. As a result, part of the exhaust gas remains in the cylinder of the internal combustion engine, and in the subsequent cycle of suction of air or fuel mixture into the cylinder of the internal combustion engine, the exhaust gas is mixed there with the intake air or fuel mixture. "

OBJECT OF THE INVENTION

The purpose of the claimed invention is to provide control of exhaust gas recirculation in all modes of operation of an internal combustion engine (ICE) by a pneumatic drive system of a two-valve gas distributor with charging the pneumatic accumulator of the system with gas from a compensating pneumatic accumulator.

In accordance with clause 2 of Article 1350 of the Code and clause 24.5.3. (4) of the Regulation, the quotation: “The conditions of an inventive step correspond, in particular: inventions based on the addition of a known means by any known part, upon reaching an unexpected for such addition technical result due to the relationship of the supplemented part and the known means. "

SUMMARY OF THE INVENTION

The essence of the claimed invention is illustrated by the description of the principle of operation of the two-valve gas distributor of the internal combustion engine by a pneumatic drive system with charging the pneumatic accumulator of the system with air from the atmosphere.

Charging the pneumatic accumulator of the system with gas is as follows (see figure). When starting the internal combustion engine, the piston of the internal combustion engine 1 compresses air or fuel mixture in the combustion chamber of the internal combustion engine 2 at the compression stroke, which presses on the left end surface of the piston of the compressor drive 3, as a result of which it moves to the right (according to the figure). The air from the atmosphere located in the right cavity of the compressor piston 4 (hereinafter referred to as air) through the check valve 5 enters the pneumatic accumulator of the drive system 6 (hereinafter referred to as the pneumatic accumulator 6) and charges it. Charging the pneumatic accumulator 6 occurs at the first start of the internal combustion engine, and further recharging at working cycles. After the air pressure in the pneumatic accumulator 6 reaches a value that ensures optimal functioning of the two-valve gas distributor as part of the air intake valve or fuel mixture 7 (hereinafter referred to as valve 7) and the exhaust valve 8 (hereinafter referred to as valve 8), as well as the gas distribution valve 9 (hereinafter, the gas distribution valve 9), air from the pneumatic accumulator 6 through the channel 10 enters the lower cavity of the piston of the stopper 11. As a result, the piston of the stopper 11 moves to the upper position, and is connected minutes with it the stopper 12 enters into the recess 4 of the piston compressor, blocking its movement and flow of air from the atmosphere into the accumulator 6 is stopped.

In the initial position, the intake valve 7 is open, and the exhaust valve 8 and the gas distribution valve 9 are closed. Gas exchange in the internal combustion engine is as follows. To ensure a suction stroke, the control system sets the gas distribution valve 9 in the open position. For this, the control system sets the spool 13 to the position as shown in the figure. Air from the pneumatic accumulator 6 through the channels 10, 14, 15 enters the upper cavity of the piston of the gas distribution valve 16, connected by the rod 17 to the gas distribution valve 9, as a result of which it occupies the lower position, - opens. Air or fuel mixture through the air inlet channel 18 and the open gas distribution valve 9 enters the combustion chamber of the engine 2. From the lower cavity of the piston of the gas distribution valve 16, the exhaust air is discharged through the channels 19, 20 into the atmosphere. When the air pressure in the pneumatic accumulator 6 is lower than the value that ensures the optimal functioning of the valves of the two-valve gas distributor, the spring of the stopper 21 moves the piston of the stopper 11 and the stopper 12 to the lower position. At one of the subsequent strokes of the intake of air or fuel mixture into the combustion chamber of the engine 2, the spring of the piston of the compressor 22 transfers the piston of the drive of the compressor 3 and the piston of the compressor 4 to the initial, left, position for charging the pneumatic accumulator 6. Air from the atmosphere through the check valve 23 is supplied to the right cavity of the piston of the compressor 4. The compressor is ready for the next cycle of recharging the pneumatic accumulator 6. Upon the arrival of the piston of the internal combustion engine 1 to the bottom dead center, the control system puts the spool 13 into the right position. The air from the pneumatic accumulator 6 through the channels 10, 14, 19 enters the lower cavity of the piston of the drive of the gas distribution valve 16, and the gas distribution valve 9 closes. The exhaust air from the upper cavity of the piston of the valve 16 through the channels 15, 24 is discharged into the atmosphere. The compression cycle begins, and then the expansion cycle of the combustion products. To ensure the cycle of exhaust exhaust products, the control system puts the intake valve 7 and exhaust valve 8 in the right position, for which sets the spool 25 in the left position. Air from the pneumatic accumulator 6 through channels 10, 26, 27 enters the left cavity of the piston of the drive of the intake and exhaust valves 28 and moves the intake valve 7 and exhaust valve 8 connected to the rods 29, 30 to the right. The inlet valve 7 closes and the exhaust valve 8 opens. Air from the right cavity of the piston of the intake and exhaust valve 28 through the channels 31, 32 is discharged into the atmosphere. The opening of the gas control valve 9 is shown above. As a result, the exhaust combustion products from the combustion chamber of the internal combustion engine 2 through the exhaust exhaust channel 33 are thrown into the exhaust manifold.

SUMMARY OF THE INVENTION

A method of controlling exhaust gas recirculation in an internal combustion engine by a pneumatic drive system of a two-valve gas distributor with charging the pneumatic accumulator of the system with air from the atmosphere, including a control system, a two-valve gas distributor as a part of the gas distribution valve and connected by the inlet and exhaust valve rods, characterized in that the control system of the pneumatic gas valve has a two-valve with charging the pneumatic accumulator of the system with air from the atmosphere to in accordance with the set current power of the internal combustion engine determines the mass of exhaust gases to ensure fuel combustion, and when the piston of the internal combustion engine moves from bottom dead center to top dead center on the cycle of exhaust exhaust from the cylinder of the internal combustion engine in the vicinity of top dead center time when the mass of exhaust gases determined by the control system will be in the cylinder of the internal combustion engine to ensure fuel combustion , sets the inlet valve and the exhaust valve connected by rods to the position where the inlet valve is open and the exhaust valve is closed, as a result of which some of the exhaust gases remain in the cylinder and at the subsequent suction stroke of the air or fuel mixture, the exhaust gases remaining in the cylinder of the internal combustion engine mixed with air or fuel mixture entering the cylinder of the internal combustion engine through the open intake valve and gas distribution valve.

DETAILED DESCRIPTION OF THE INVENTION

Materials and technology for the implementation of the claimed invention do not go beyond the scope of modern capabilities. At the current level of development of automatic control systems, the creation of a control system for the claimed invention is quite an ordinary task.

GRAPHIC MATERIAL

Figure. Schematic diagram of the three-valve gas distributor of the internal combustion engine with a pneumatic drive system with charging the pneumatic accumulator of the system with air from the atmosphere.

1 - internal combustion engine piston; 2 - combustion chamber of the internal combustion engine; 3 - the piston of the compressor drive; 4 - compressor piston; 5, 23 - check valve; 6-pneumatic accumulator; 7 - inlet valve; 8 - gas distribution valve; 9 - exhaust valve; 10, 14, 15; 19, 20, 24, 26, 27, 31, 32 - channel; 11 - stopper piston; 12 - stopper; 13, 25 - spool; 16 - the piston of the valve timing; 17, 29, 30 - stock; 18 - channel air intake; 21 - a spring of a stopper; 22 - compressor piston spring; 28 - the piston of the intake and exhaust valve; 33 - channel exhaust exhaust products.

Claims (1)

A method of controlling exhaust gas recirculation in an internal combustion engine by a pneumatic drive system of a two-valve gas distributor with charging the pneumatic accumulator of the system with air from the atmosphere, including a control system, a two-valve gas distributor as a part of the gas distribution valve and connected by the inlet and exhaust valve rods, characterized in that the control system of the pneumatic gas valve has a two-valve with charging the pneumatic accumulator of the system with air from the atmosphere to in accordance with the set current power of the internal combustion engine determines the mass of exhaust gases to ensure fuel combustion, and when the piston of the internal combustion engine moves from bottom dead center to top dead center on the cycle of exhaust exhaust from the cylinder of the internal combustion engine in the vicinity of top dead center time when the mass of exhaust gases determined by the control system will be in the cylinder of the internal combustion engine to ensure fuel combustion , sets the inlet valve and the exhaust valve connected by rods to a position in which the inlet valve is open and the exhaust valve is closed, as a result of which some of the exhaust gases remain in the cylinder and at the subsequent suction stroke of the air or fuel mixture, the exhaust gases remaining in the cylinder of the internal combustion engine are mixed with air or fuel mixture entering the cylinder of the internal combustion engine through the open intake valve and gas distribution valve.