Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-11-06
2007-11-06
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S501000
Reexamination Certificate
active
10565561
ABSTRACT:
A fuel injection system having an injection valve, a line supplying fuel at high pressure to the injection valve a control valve controlling the pressure in a control chamber communicating with the line. The control valve has a movable valve part is actuatable by an actuator via a hydraulic coupler having two pistons cooperating with a booster chamber of the coupler. A seat of the movable valve part has an inside cross-sectional area f3, with means for filling the booster chamber via guide gaps of the pistons with fuel under pressure. The pistons are located parallel to and inside one another and a booster chamber is located on the ends of the pistons toward the actuator. In the interior of the outer piston defines a filling chamber which communicates with the line and one of the pistons has a cross-sectional area f4is mechanically coupled to the actuator via a rod having a cross-sectional area f5. The other piston which has a piston area f2, actuates the control valve via a rod having a cross-sectional area that is smaller than f2and the direction of the closing motion of the movable valve part matches the direction of fuel flowing out of the control chamber so that the control valve is at least partially force-balanced because of the pressure acting on the further piston in the booster chamber.
REFERENCES:
patent: 6067955 (2000-05-01), Boecking
patent: 6260541 (2001-07-01), Ricci-Ottati et al.
patent: 6422211 (2002-07-01), Boecking
patent: 6484697 (2002-11-01), Boecking
patent: 6719264 (2004-04-01), Mattes
patent: 6725841 (2004-04-01), Boecking
patent: 6817542 (2004-11-01), Boecking
patent: 6820820 (2004-11-01), Boecking
patent: 6877483 (2005-04-01), Askew
patent: 6915785 (2005-07-01), Eisenmenger et al.
patent: 6994272 (2006-02-01), Kurrle et al.
patent: 198 56 617 (2000-06-01), None
patent: 199 51 004 (2001-04-01), None
patent: 100 19 765 (2001-10-01), None
patent: 101 01 802 (2002-07-01), None
patent: 101 45 622 (2003-04-01), None
Greigg Ronald E.
Miller Carl S.
Robert & Bosch GmbH
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