Patent ID: 7634940
Filing Date: 2009-12-22
Classification: F02D,Y02T

Abstract:
1. A method for monitoring an intake manifold pressure of an internal combustion engine, comprising: comparing a measured signal for the intake manifold pressure with a reference signal for the intake manifold pressure; checking whether the measured signal for the intake manifold pressure deviates from the reference signal for the intake manifold pressure by more than a predefined tolerance range, the predefined tolerance range being for error-free operation of at least one of intake and exhaust valves of at least one cylinder of the internal combustion engine; and detecting an erroneous operation of the at least one of the intake and exhaust valves if the measured signal for the intake monitor deviates from the reference signal for the intake manifold pressure by more than the predefined tolerance range, and if not, detecting an error-free operation of the at least one of the intake and exhaust valves.