Patent ID: 8483936

Claim:
A method to calibrate the fuel injection in at least one combustion chamber of a Diesel engine, the combustion chamber having a piston that moves along a piston stroke between a top dead center and a bottom dead center, the method comprising for at least one combustion chamber: a) recording the combustion noise power or amplitude in the combustion chamber over a piston position range [γ 1i ; γ 2i ], where γ 1i is a piston position where the fuel is injected into the combustion chamber and γ 2i is a piston position where the explosion of the injected fuel has already begun, b) at the same time, recording the piston position during the same piston position range [γ 1i ; γ 2i ], c) determining from the preceding recordings for which piston position K min-i relative to the top dead center of the combustion chamber, the measured combustion noise power passes through a minimum P min-i when the piston moves from position γ 1i to position γ 2i , d) adjusting the fuel injection according to the determined piston position K min-i .