Patent ID: 6405706
Filing Date: 2002-06-18
Classification: F01L,F02D,Y02T

Abstract:
A valve timing system for use with an internal combustion engine of the type including at least one cylinder having a piston pivotally coupled to a crankshaft and at least one valve, said system comprising:at least one actuator effective to selectively actuate said at least one valve, a first engine sensor effective to measure a temperature of said engine and to generate a first signal representing said temperature; a second engine sensor effective to monitor an angular position of said crankshaft and to generate a second signal representing said angular position; and a controller communicatively coupled to said at least one actuator and said first and second engine sensors, said controller being effective to receive said first and second signals and to cause said at least one actuator to selectively and briefly pulse open and close said at least one valve during a stroke cycle of said internal combustion engine based upon said received first and second signals.