Patent ID: 7137367
Filing Date: 2006-11-21
Classification: F02D,F02M,F02P,Y02T

Abstract:
1. A control apparatus for valve actuation of intake and exhaust valves of an internal combustion engine, the apparatus controls actual actuation of each of the intake valve and the exhaust valve to the corresponding target actuation, wherein one of the intake valve and the exhaust valve is a first valve and the other is a second valve, wherein the actuation of the second valve is set within a predetermined permitted range, the apparatus comprising: a first computing portion that computes the target actuation of the first valve and a target valve overlapping amount according to the engine operational state, the target valve overlapping amount being a target amount of a valve overlapping amount of a valve opening period of the first valve and a valve opening period of the second valve, wherein the first computing portion computes the target actuation of the second valve based on the target valve overlapping amount and the actual actuation of the first valve; and a second computing portion that computes a requested actuation of the second valve based on the target valve overlapping amount and the target actuation of the first valve, wherein, when the requested actuation is out of the permitted range of the second valve actuation, the second computing portion corrects the target actuation of the first valve based on the margin between the requested actuation and a limit of the permitted range.