Electrohydraulic controlled continuously variable gas distribution timing system in internal-combustion engine

Abstract

A continuous variable valve actuating-timing system controlled by electrohydraulic control and set on internal combustion engine is prepared as using entrance one-way valve to control oil intake of hydraulic cylinder and using one-way solenoid valve to control oil exhaust of hydraulic cylinder, using rise-up section of valve actuating cam to control open and rise-up of air door and controlling close and drop-down of air door by depending upon exhausting time of liquid in hydraulic cylinder.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a gas distribution system of an ignition type internal combustion engine. Background technique [0002] Ignition internal combustion engine load adjustment is achieved by changing the amount of combustible mixture entering the cylinder, that is, changing the amount of combustible mixture entering the cylinder by adjusting the throttle opening. When the speed of the internal combustion engine remains constant, the opening of the throttle valve increases, the amount of combustible mixture entering the cylinder increases, and the output power of the internal combustion engine increases accordingly; otherwise, it decreases. When the internal combustion engine works under small and medium load conditions, due to the small opening of the throttle valve, the pumping loss of the internal combustion engine will increase significantly, which will eventually lead to an i...

AI Technical Summary

Problems solved by technology

However, these mechanisms cannot achieve continuous variable valve timing, so they cannot meet the requirements of low fuel consumption for internal combustion engines at medium and small loads and high power at high speeds.

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