Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2005-07-05
2009-08-11
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C251S206000
Reexamination Certificate
active
07571713
ABSTRACT:
The high-pressure pump has at least one pump element with a pump piston driven in a reciprocating motion and guided displaceably in a cylinder bore of a pump housing part which piston defines a pump work chamber that can be filled with fuel from a fuel inlet via a suction valve in the intake stroke. The suction valve has a pistonlike valve member which has a cylindrical shaft and a head of larger cross section at least the shaft is guided displaceably in a guide bore of a valve housing. The head of the valve member is also guided displaceably in a bore of the valve housing, via guide portions embodied on the valve member and spaced apart from one another in the circumferential direction; between the guide portions, flowthrough portions of reduced cross section compared to the guide portions provide for fuel flow out of the fuel inlet into the pump work chamber.
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Caroli Vittorio
Cavallo Angela
De Luca Alessandro
Cronin Stephen K
Greigg Ronald E.
Hufty J. Page
Robert & Bosch GmbH
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