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

2005-01-25

2005-01-25

Lo, Weilun (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S506000, C123S496000, C239S088000, C239S096000

Reexamination Certificate

active

06845757

ABSTRACT:
The fuel injection system has one high-pressure fuel pump and one fuel injection valve for one cylinder of the engine. The fuel pump has a work chamber, and the injection valve has a valve member, and which is movable in an opening direction, counter to the force of a closing spring, by the pressure in a pressure chamber communicating with the pump work chamber; the closing spring is braced between the injection valve member and a displaceable deflection piston which, defines a prechamber that communicates with the pump work chamber. The deflection piston is movable into a storage chamber counter to the force of the closing spring. The prechamber communicates with the pump work chamber via a first throttle restriction, and the pressure chamber of the fuel injection valve communicates with the pump work chamber via a second throttle restriction, circumventing the prechamber.

REFERENCES:
patent: 4566416 (1986-01-01), Berchtold
patent: 4572433 (1986-02-01), Deckard
patent: 5012786 (1991-05-01), Voss
patent: 5125581 (1992-06-01), Kronberger
patent: 5328094 (1994-07-01), Goetzke et al.
patent: 5832899 (1998-11-01), Soteriou
patent: 6283390 (2001-09-01), Brendle et al.
patent: 6305359 (2001-10-01), Kronberger et al.
patent: 39 00 763 (1990-07-01), None
patent: 0 767 304 (1997-04-01), None

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