Modularized multi-function variable valve drive system used for 4-cylinder internal combustion engine

摘要

PROBLEM TO BE SOLVED To provide a multi-function variable valve driving system which is used for a four-cylinder internal combustion engine and is modularized.SOLUTION: This multi-function variable valve driving system which is used for a four-cylinder internal combustion engine and is modularized includes a fueling module, a stage limited module, a mode selection module, a control module, an oil transfer module, a valve driving module, etc. including. The stage limited module has an extremely simple structure, the valve opening / closing process is not limited by the oiling module operation stage, and at the same time, a continuously variable valve event can be realized with only two oil supply modules and two two-position two-And two refueling modules, can significantly reduce the cost; the mode selection module realizes flexible switching of the driving mode and the braking mode of the internal combustion engine; each component function of the system is independent, gas distribution type, valve actuation Flexibility of the braking mode, presence or absence of the braking mode, etc., and there is no need to change the other modules, the system adaptability is good and the application range is wide.BACKGROUND OF THE INVENTION