Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-11-12
2011-12-27
Kwon, John T. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C239S585500
Reexamination Certificate
active
08082903
ABSTRACT:
A method is for operating an injector, in particular a fuel injector of an internal combustion engine in a motor vehicle, the injector having a piezoelectric actuator for driving a valve needle coupled, preferably hydraulically, to the actuator. Starting from a starting voltage corresponding to a first operating state of the injector, the actuator is recharged, i.e., charged or discharged, by a predefinable voltage swing to a target voltage corresponding to a second operating state of the injector.
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International Search Report, PCT/EP2007/062208 dated May 7, 2008.
Lehr Hans-Peter
Tonner Erik
Hoang Johnny
Kenyon & Kenyon LLP
Kwon John T.
Robert & Bosch GmbH
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