Patent ID: 7305957
Filing Date: 2007-12-11
Classification: F01L,F02D,F02N,Y02T

Abstract:
1. A valve timing control apparatus for an intake valve of an internal combustion engine, comprising: a driving device that is capable of operating regardless whether the engine is running or not; a variable valve actuation mechanism that changes the valve timing of the intake valve, wherein the variable valve actuation mechanism is driven by the driving device; a control section, wherein: during an idling operation of the engine, the control section controls the driving device such that the variable valve actuation mechanism maintains the valve timing at a valve timing advanced relative to a most retarded valve timing; and after a stopping operation of an autonomous operation of the engine is initiated, the control section controls the driving device, even after the engine has stopped running, such that the variable valve actuation mechanism changes the valve timing to the most retarded valve timing.