Patent ID: 7131408
Filing Date: 2006-11-07
Classification: F01L,F02B,F02D,Y02T

Abstract:
1. A method for controlling an internal combustion engine wherein the open time of an inlet valve of a cylinder of said internal combustion engine is variably adjusted, the method comprising the steps of: distinguishing between two operating states of said engine in dependence upon an operating variable of said engine; delaying an opening of said inlet valve in a first one of said operating states during an intake operation; delaying a closing of said inlet valve in a second one of said operating states and executing said closing of said inlet valve at a closing time point during a compression operation; compressing an air/fuel mixture supplied to said engine utilizing an exhaust-gas turbocharger; and, determining the required charging pressure of said exhaust-gas turbocharger in said second operating state in dependence upon said closing time point of said inlet valve to at least compensate return losses which result during the compression operation.