Patent ID: 6718928
Filing Date: 2004-04-13
Classification: F02N,F02P

Abstract:
A method for starting a multi-cylinder direct-injecting internal combustion engine including an engine for a motor vehicle without the aid of a starter motor, each cylinder of the engine running sequentially through an induction phase, a compression phase, a work phase and a discharge phase during operation of the engine, the method comprising the steps of:in advance of the starting operation, bringing at least one of the inlet and outlet valves of each of at least two cylinders, whose pistons are disposed in respective locations after top dead center, into a position corresponding to the work phase; injecting fuel into the combustion chambers of said two cylinders and igniting said fuel thereby triggering said starting operation; and, after an unsuccessful first ignition of fuel injected into at least two cylinders in the work phase, the method is carried out once more with inverted phases of the individual cylinders wherein the inlet and outlet valves of said individual cylinders are driven so that cylinders which were previously in said intake phase are now in said work phase and vice versa and individual cylinders which were previously in said compression phase are now in said discharge phase and vice versa.