Continuous and variable gas distribution control system of spark ignition engine

Abstract

The invention discloses a continuous and variable gas distribution control system of a spark ignition engine. In the control system, a crank-link mechanism is connected with a piston; a gas inlet branch pipe and an exhaust pipe are both communicated with an engine cylinder; a connection part of the gas inlet branch pipe and the engine cylinder is provided with a gas inlet door which is connected with a hydraulic piston push rod of a gas inlet hydraulic control component through a gas inlet door spring; and a connection part of the exhaust pipe and the engine cylinder is provided with an exhaust door which is connected with the hydraulic piston push rod of an exhaust hydraulic control component through an exhaust door spring. The system can continuously and optimally control the on-off time (correct time), the on-off speed and a stroke of the gas inlet door and the exhaust door and a coincident angle of the on-off time (crank angle), the gas inlet door and the gas outlet door according to the requirements of the rotating speed and the load of the engine so as to realize continuous and variable control, thereby ensuring that the dynamic performance, the economy and the emission performance of the engine are sufficiently performed and improved.

Description

technical field [0001] The invention relates to a continuously variable gas distribution control system for an ignition type engine. Background technique [0002] The current gas distribution control system of the ignition type internal combustion engine mainly adopts the cam on the power drive control camshaft to drive the opening and closing of the intake and exhaust valves. The so-called variable intake control is also controlled by using different cams to control the engine under different speed conditions, thereby affecting the opening and time of the intake valve; or making the intake camshaft relative to the tooth profile The belt is rotated by an angle to achieve the purpose of delayed opening and closing of the intake valve, which is used to increase the delayed intake angle at high speeds, thereby improving the charging efficiency of the cylinder. Present ignition type internal combustion engines all adopt throttle to control engine, without throttle, the speed an...

AI Technical Summary

Problems solved by technology

The current ignited internal combustion engines all use the throttle to control the engine. Without the throttle, the speed and load of the engine cannot be controlled. The control of this engine is to control the speed and load of the engine through the opening of the throttle.

This control is carried out in stages, and the timing of the intake and exhaust valves and the control of the opening and closing angles cannot be controlled arbitrarily.

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