Fuel injection pump with a conical transition outlet area

Details Fuel injection pump with a conical transition outlet area Fuel injection pump with a conical transition outlet area

1992-11-09

1993-11-02

Bertsch, Richard A.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

417570, 251337, 13754323, F04B 2102

Patent

active

052579182

ABSTRACT:
The invention provides a fuel injection pump for internal combustion engines having a high-pressure chamber, which is intermittently brought to high fuel pressure, and which communicates via a pressure line with an injection point of an engine, and having a pressure valve, inserted into the pressure line. This pressure valve comprises a valve body and a valve seat onto which a valve member is pressed by the force of a valve spring. The valve spring is located in a recess of a pressure valve holder, which communicates with the injection line via an axial conduit. A transitional region leading from the diameter of the axial recess to the diameter of the conduit is embodied with a cone shape or a truncated cone shape.

REFERENCES:
patent: 1590766 (1926-06-01), Lipman
patent: 4127366 (1978-11-01), Sumi
patent: 4403628 (1983-09-01), Nijjar
patent: 4665943 (1987-05-01), Medvick et al.
patent: 5033506 (1991-07-01), Bofinger

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