Patent ID: 9347413
Filing Date: 2016-05-24
CPC Classification: F01L,F02D,F02M,Y02T

Claim Text:
1. A method for controlling a single-cylinder or multi-cylinder internal combustion engine having at least one fuel injector per cylinder for injecting fuel, at least one camshaft for actuating at least one inlet valve and/or at least one outlet valve, wherein a valve drive adjustment device is provided for controllable change of the actuation characteristic of at least one valve that is actuated by means of the camshaft, a crankshaft sensor which outputs a crankshaft signal which represents the crankshaft angle, and a control unit for controlling the fuel injection and the valve drive adjustment device, the method comprising: the control unit receiving at least one cylinder pressure signal from a cylinder pressure sensor for measuring the pressure in an associated cylinder, the control unit evaluating the at least one cylinder pressure signal with regard to interference signals, and the control unit controlling the valve drive adjustment device based at least on the evaluation result of the at least one cylinder pressure signal, wherein the control unit further receives a camshaft signal output by a camshaft sensor, wherein the control unit further evaluates the at least one cylinder pressure signal and the camshaft signal to determine a present setting of the valve drive adjustment device by setting a certain event of a valve actuation process relative to a time or crank angle.