Patent ID: 7188594
Filing Date: 2007-03-13
Classification: F01L,F02D

Abstract:
1. An apparatus for controlling a variable valve actuation mechanism capable of continuously varying operating characteristics of an engine valve, the apparatus comprising: a detector that is configured to output a detection signal according to the operating characteristics of the engine valve continuously varied by the variable valve actuation mechanism; a learning unit that is configured to learn the detection signal of said detector at a time when the variable valve actuation mechanism is controlled to come to a reference position at which the actuation of the variable valve actuation mechanism is restricted by a stopper; a valve control unit that is configured to detect the operating characteristics of the engine valve from the detection signal of the detector based on a learning result of the learning unit, to thereby feedback-control the variable valve actuation mechanism; and a torque control unit that controls engine control amounts other than the operating characteristics of said engine valve according to a demanded engine torque, when the learning by said learning unit is performed.