Fuel injection pump plunger

Details Fuel injection pump plunger Fuel injection pump plunger

1997-10-29

1999-03-30

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

With fuel pump

F02M 3704

Patent

active

058875719

ABSTRACT:
The present invention provides a fuel injection pump plunger whereby it is possible to avoid deformation of the timing sleeve 11 in the fact of increased fuel pressure, to ensure no-injection state even with elimination of the furrow, and to prevent secondary injection. It results from the realization that it is possible to replace the furrow with an aperture with which the spill port can connect in line with the movement of the plunger 20, and is wherein an aperture (horizontal aperture 21) is provided below and separate from said inclined lead 10, this aperture 21 being such that it is not only connected with said central fuel passage 8, but in the no-injection position of said control rack 13 allows said spill port 12 to engage either with this aperture 21, with said inclined lead 10, or with both of them, the area of the aperture when they engage being the same as the area of said central fuel passage 8.

REFERENCES:
patent: 4830587 (1989-05-01), Guntert et al.
patent: 5217356 (1993-06-01), Ryuhzaki
patent: 5219280 (1993-06-01), Yashiro
patent: 5233955 (1993-08-01), Kraemer et al.
patent: 5591021 (1997-01-01), Guentert et al.

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