Patent ID: 7182062
Filing Date: 2007-02-27
Classification: F02D,F02N

Abstract:
1. A method of controlling direct injection of fuel into a combustion chamber of an internal combustion engine, the internal combustion engine having a plurality of combustion chambers, each combustion chamber limited by a movable piston, the pistons connected to a crankshaft, wherein intake and outlet valves are arranged on the combustion chambers, the intake and outlet valves activated by a camshaft, the method comprising: acquiring a phase angle of the pistons at the time of starting up the internal combustion engine, by a absolute position sensor arrangement configured to acquire an absolute position of the pistons, the absolute position sensor arrangement assigned to the camshaft or the crankshaft; verifying if a fuel pressure is greater than a compression pressure; if the verification is positive, selecting such combustion chamber the piston of which first enters compression stroke after starting up the combustion engine based on a position signal generated by the absolute position sensor arrangement; injecting fuel into the selected combustion chamber during the compression stroke; controlling direct injection based on the position signal generated by the position sensor arrangement; acquiring a single position of the crankshaft during a full rotation of the crankshaft, by a sensor; determining the phase angle of the pistons using a position signal originating from the sensor after the single position of the crankshaft has been acquired by the sensor; and controlling the direct injection or ignition based on the acquired single position of the crankshaft.