Patent ID: 8374769
Filing Date: 2013-02-12
Classification: F02D,Y02T

Abstract:
1. A control apparatus for a variable valve operating mechanism, which is employed for a multi-cylinder internal combustion engine including the variable valve operating mechanism and a valve stop mechanism, wherein the variable valve operating mechanism includes a variable mechanism portion that changes a valve characteristic of an engine valve, and an actuator that drives the variable mechanism portion; and the valve stop mechanism stops opening and closing of the engine valve in at least one of cylinders, the control apparatus comprising: a controller configured to set a controlled variable for the actuator so that an actual value of the valve characteristic matches a target value of the valve characteristic, and to set, based on whether a reduced-cylinder operation is performed or an all-cylinder operation is performed, a control characteristic value used to set the controlled variable for the actuator, and to make the actual value match the target value, in a manner such that, when the reduced-cylinder operation is performed by operating the valve stop mechanism, the control characteristic value is different from the control characteristic value when the all-cylinder operation is performed by deactivating the valve stop mechanism.