Fuel injection system for an internal combustion engine

Details Fuel injection system for an internal combustion engine Fuel injection system for an internal combustion engine

2005-07-05

2005-07-05

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

C123S467000

Reexamination Certificate

active

06912990

ABSTRACT:
The fuel injection system has a fuel injection valve acted upon by the pressure prevailing in a pressure chamber of the fuel injection valve and is movable by this pressure, counter to the force of a closing spring, in an opening direction to open the at least one injection opening, and fuel is delivered under high pressure to the pressure chamber by a high-pressure fuel pump for a fuel injection. The injection valve member is urged in the closing direction at least indirectly by a variable pressure prevailing in a spring chamber of the fuel injection valve. The spring chamber has a communication with a pressure source, which is controlled by a valve whereby different opening pressures of the fuel injection valve for a preinjection and a main injection of fuel can be attained.

REFERENCES:
patent: 5984201 (1999-11-01), Hofmann et al.
patent: 6491017 (2002-12-01), Mahr et al.
patent: 6725840 (2004-04-01), Mahr et al.
patent: 6796290 (2004-09-01), Boehland et al.
patent: 2 086 473 (1982-05-01), None
patent: WO 01/69076 (2001-09-01), None

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