FUEL INJECTION DEVICE WITH A PRESSURE BOOSTER

摘要

A fuel injection device comprising a pressure booster. The pressure booster comprises a displaceable piston (24) which can be impinged upon with pressure via a pressure booster chamber on the low pressure side in order to compress the fuel which is to be fed to an injector. The stroke (24) of the piston can be essentially controlled by the pressure in a differential chamber of the pressure booster and is used to influence the pressure of the fuel fed to the injector. Means (24, 25) are provided for enlarging the cross-section of the discharge from the differential chamber of the pressure booster. The fuel pressure can be influenced during injection. An increase in pressure can be obtained using simple means.