Patent ID: 6412459
Filing Date: 2002-07-02
Classification: F01L,F02B

Abstract:
A valve timing controller for use with an internal combustion engine having a crankshaft, said valve timing controller comprising:an intake cam driven by the crankshaft of said internal combustion engine and acting to open and close intake valves; an exhaust cam driven by the crankshaft of said internal combustion engine and acting to open and close exhaust valves; a valve timing-varying means mounted in a rotation transfer path between said crankshaft and at least one cam selected from the intake cam and the exhaust cam to vary phase of rotation of said one cam relative to the crankshaft; a driving means for driving said valve timing-varying means; and a control means for controlling an amount of control over said driving means, said control means detecting a difference of the amount of control over the driving means to cause said valve timing-varying means to operate in a desired manner under different operating conditions of said internal combustion engine, said amount of control over the driving means being determined according to the difference of the amount of control.