Patent ID: 7182070

Claim:
A method for shaping the injection curve of a fuel injector ( 3 ), which can be triggered via an on/off valve ( 29 ) that can be actuated by means of a control valve ( 37 ) and which has a pressure booster ( 5 ) for increasing the pressure level of fuel to be injected into a combustion chamber; the fuel injector ( 3 ) has a one-part or multipart injection valve member ( 21 , 22 ) and the pressure booster ( 5 ) can be actuated through depressurization or pressurization of a differential pressure chamber ( 9 ); a working chamber ( 8 ) of the pressure booster ( 5 ) communicates continuously with a high-pressure source ( 1 ), the method comprising triggering the control valve ( 37 ) that triggers the on/off valve ( 29 ) once or multiple times during a main phase in which fuel is injected into a combustion chamber of an internal combustion engine in order to influence the injection pressure curve.