Loading patent…
AssigneeRobert Bosch GmbH
InventorsMarkus Nieslony, Alfons Schoetz, Matthias Distel, Achim Koehler, Falko Bredow, Waldemar Kiel, Jochen Aleker
Estimating the term…
A check valve having a valve housing inserted into a receptacle in which housing a pistonlike valve member is guided longitudinally displaceably and cooperating with a valve seat on the valve housing. The valve member is urged in the closing direction by a prestressed closing spring and in the opening direction by the pressure prevailing in an inlet, and the valve member is inserted into the valve housing from the side of the valve seat. The valve housing is embodied in one piece and is embodied as cup-shaped and has both a bottom and a jacket region that defines a recess. With the open end of its recess, the valve housing points out of the receptacle, and the valve seat is located on the bottom of the valve housing, facing away from the recess. With a shaft, the valve member protrudes through a bore in the bottom into the recess in which the closing spring is located.
1-8. (canceled)
A check valve, in particular for a high-pressure pump of a fuel injection system for an internal combustion engine, comprising one piece valve housing (40) adapted to be inserted into a receptacle (34) in a pump housing part, a pistonlike valve member (60) guided longitudinally displaceably in the valve housing (40), which valve member cooperates with a valve seat (48) embodied on the valve housing (40), the valve member (60) being urged in the closing direction by a prestressed closing spring (70) and in the opening direction by the pressure prevailing in an inlet (44a), the valve member (60) being inserted into the valve housing (40) from the side of the valve seat (48), the valve housing (40) being cup-shaped and having both a bottom (42) and a jacket region that has a recess (41);
The check valve, in particular for a high-pressure pump of a fuel injection system for an internal combustion engine, comprising one piece a valve housing (40) adapted to be inserted into a receptacle (34) in a pump housing part, a pistonlike valve member (60) is guided longitudinally displaceably in the valve housing (40), which valve member cooperates with a valve seat (48) embodied on the valve housing (40), and the valve member (60) being urged in the closing direction by a prestressed closing spring (70) and in the opening direction by the pressure prevailing in an inlet (44a), the check valve including an inlet (30) having at least one inlet conduit (50) and preferably a plurality of inlet conduits, extending through the valve housing (40), which at least one inlet conduit discharge in such a way into a bore (44a) surrounding the valve member (60) that the longitudinal axis (51) of the at least one inlet conduit (50) does not intersect the longitudinal axis (45) of the bore (44a) surrounding the valve member (60).
Dependencies are inferred from the claim text.