Patent ID: 7458348
Filing Date: 2008-12-02
Classification: F01L,F02D,Y02T

Abstract:
1. A variable valve actuation control apparatus for an internal combustion engine, comprising: a variable valve actuation device which varies a phase of the center of an operating angle of an intake valve and lift characteristics thereof; a first learning section that learns an error in intake air quantity which depends on said phase; a second learning section that learns an error in intake air quantity which depends on said lift characteristics; a selecting section that operates said first learning section in a region in which an opening area of said intake valve is determined to be larger than a first threshold, and operates said second learning section in a region in which the opening area of said intake valve is smaller than a second threshold which is less than or equal to said first threshold; and a control section that controls said variable valve actuation device, based on said learned errors in intake air quantity.