RU2181440C2 - Internal combustion engine gasoline-air delivery method - Google Patents

Abstract

FIELD: mechanical engineering; fuel system devices of internal combustion engines. SUBSTANCE: proposed gasoline-air delivery method includes delivery of required amount of gasoline-air mixture, compression of mixture and its combustion. Main part of gasoline-air mixture is delivered into engine cylinder at suction stroke of piston from top dead center to bottom dead center with beginning of maximum delivery in any point of piston position. Amount of gasoline-air mixture getting into cylinder is defined by time during which mixture gets into cylinder at maximum velocity. EFFECT: improved economy, reduced toxicity of exhaust gases. 2 dwg

Description

 The invention relates to engine building, in particular to fuel equipment of internal combustion engines.

 A known method of supplying a gasoline-air mixture of an internal combustion engine, including supplying the required amount of a gasoline-air mixture, compressing it and further burning it (see A.S. KHACH-LYAN and other Internal Combustion Engines, Moscow. Higher School, 1978, p. 11).

 This method is carried out by an internal combustion engine containing cylinders, pistons, connecting rods, a crankshaft mounted on main bearings, as well as a carburetor, by which the amount of mixture entering the engine cylinder and the lubrication, cooling, gas distribution, exhaust gas and ignition system is regulated.

 The disadvantage of this method is that the greatest efficiency of an internal combustion engine will be only at a power close to the nominal value, in the rest of the power range it will be much lower, which is explained by a deterioration in combustion and an increase in mechanical losses.

 Closest to the claimed method is a method comprising supplying the required amount of a gasoline-air mixture, compressing it and further burning, and a portion of the gasoline-air mixture enters the cylinder of the internal combustion engine when the piston passes below the middle of the cylinder. As a result of this, a pressure of 0.03-0.04 MPA is formed in the cylinder, near the middle of the piston stroke, the valve quickly opens and the gas-air mixture at high speed up to (200 m / s) enters the cylinder. Under the action of a dynamic pressure column of a gas-air mixture, the density, mass, and turbulence of a charge increase (Internal Combustion Engines, Moscow. Mechanical Engineering. 1983, edited by A.S. ORLIN, M.G. Kruglov, p.194).

 This method is carried out by an internal combustion engine containing cylinders, pistons, connecting rods, a crankshaft, main bearings, power, cooling, lubrication, ignition, exhaust gas systems, as well as a gas distribution system, which features an unusual profile of the camshaft intake cams.

 The disadvantages of the above method are low fuel efficiency and increased toxicity of exhaust gases.

 The objective of the proposed technical solution is to increase fuel efficiency and reduce the toxicity of exhaust gases of an internal combustion engine.

 The problem is achieved in that in the method of supplying a gasoline-air mixture of an internal combustion engine, including supplying the necessary amount of a gasoline-air mixture, compressing it and further burning, the main part of the gasoline-air mixture is fed into the engine cylinder when the piston moves to the “suction” from the top dead center to bottom dead center with the start of maximum flow at any point of the piston position, the amount of gas-air mixture entering the cylinder is determined by the time during which it enters the cylinder at maximum speed.

 The invention is confirmed by the drawings.

 Figure 1 shows the principle of the claimed method.

 Figure 2 schematically shows a device that implements the method.

 The method is as follows.

 The required amount of gasoline-air mixture is supplied, its compression and further combustion is carried out, and the main part of the gasoline-air mixture is fed into the engine cylinder when the piston moves to the intake from the top dead center to the bottom dead center with the start of the maximum feed at any point of the piston position , the amount of gasoline-air mixture entering the cylinder is determined by the time during which it enters the cylinder at maximum speed.

 A device for implementing the method comprises a cylinder 1, a piston 2, a connecting rod 3, a crankshaft 4, main bearings 5, an intake valve 6, a shutter 7 having only two “closed” or “open” positions, a control system 8 for this shutter 7, a shutter actuator 9 7, a gas-air mixture supply system 10, an air filter 11, an exhaust valve 12 for removing exhaust gases.

 The device operates as follows.

 When the piston 2 moves from the top dead center to the bottom dead center, there is an increase in rarefaction in cylinder 1, the intake valve 6 is open, and the butterfly valve 7 is closed until the piston 2 drops to the desired value, this can be any position from top dead center to bottom dead center. Having reached the required position of the piston 2, the shutter 7 is opened by means of the actuator 9 of the shutter 7 and the control system 8. The gasoline-air mixture formed in system 10 starts to flow into cylinder 1 at maximum speed until the intake valve 6 closes. The amount of gasoline-air mixture entering cylinder 1 is determined by the time the gas-air mixture flows in between opening the shutter 7 and closing valve 6.

 Such a feed with a high speed gasoline-air mixture favorably affects the efficiency and toxicity of the internal combustion engine.

Claims (1)

 A method of supplying a gasoline-air mixture of an internal combustion engine, including supplying the required amount of a gasoline-air mixture, compressing it and further burning it, characterized in that the main part of the gasoline-air mixture is fed into the engine cylinder when the piston moves to the “suction” from the top dead point to the bottom dead point, with the beginning of the maximum flow at any point of the piston position, the amount of gasoline-air mixture entering the cylinder is determined by the time during which it enters the cylinder with maximum speed with an awkwardness.

Images