Fuel injection pump

Details Fuel injection pump Fuel injection pump

1992-02-10

1993-05-18

Bertsch, Richard A.

Pumps

Expansible chamber type

Pumping member position controlled port

417494, 123500, F04B 704

Patent

active

052115496

ABSTRACT:
A fuel injection pump for internal combustion engines, having a reciprocating pump piston and an annular slide displaceable on the pump piston and having a control bore which cooperates with a control recess on a pump piston that communicates with the pump work chamber via a conduit. Because of a crooked position of the control bore with respect to the piston axis, an ellipse-like opening cross section is created, which in cooperation with the oblique control edge opens a fast, large opening cross section, by way of which in cooperation with an equal pressure valve disposed in the injection line, the fuel can flow out quickly, and a reliable, fast closure of the injection valve is assured. A pressure holding valve is also provided which opens toward the work chamber.

REFERENCES:
patent: 4737085 (1988-04-01), Guntert et al.
patent: 4817716 (1989-03-01), Guntert et al.
patent: 4830587 (1989-05-01), Guntert et al.
patent: 4850822 (1989-07-01), Guntert et al.
patent: 5097812 (1992-03-01), Augustin

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