Fuel injector with variable actuator boosting

Details Fuel injector with variable actuator boosting Fuel injector with variable actuator boosting

2005-04-15

2008-08-05

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

With fuel pump

C239S102200

Reexamination Certificate

active

07406951

ABSTRACT:
The invention relates to a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine. The fuel injector has an injection valve member that can be actuated directly by a piezoelectric actuator. This injection valve member is contained in a nozzle body of the fuel injector and can be moved into its closed position by a spring element. A hydraulic boosting device is provided between the piezoelectric actuator and the injection valve member in order to adapt the force to be exerted by the piezoelectric actuator to the opening force curve of the injection valve member.

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