Internal-combustion engines – Charge forming device – With fuel pump
Reexamination Certificate
2007-02-27
2007-02-27
Moulis, Thomas (Department: 3747)
Internal-combustion engines
Charge forming device
With fuel pump
C123S446000, C123S467000
Reexamination Certificate
active
11123067
ABSTRACT:
A method for triggering a fuel injector via an on/off valve and a control valve that actuates it. The fuel injector has a pressure booster whose piston parts separate a working chamber from a differential pressure chamber. Via a compression chamber of the pressure booster, a nozzle chamber of the fuel injector can be acted on with highly pressurized fuel. The working chamber of the pressure booster communicates continuously with a common rail. During the main phase in which fuel is injected into the combustion chamber of an internal combustion engine, the control valve that actuates the on/off valve is triggered once or multiple times so that the maximum pressure level occurring at the combustion chamber end of a one-part or multipart injection valve member falls below the maximum achievable pressure level.
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Greigg Ronald E.
Moulis Thomas
Robert & Bosch GmbH
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