Fuel-injection pump for internal combustion engines

Details Fuel-injection pump for internal combustion engines Fuel-injection pump for internal combustion engines

1995-11-22

1997-01-07

Gluck, Richard E.

Pumps

Expansible chamber type

Pumping member position controlled port

417499, 123500, 123503, F02M 4300, F02M 4506

Patent

active

055910211

ABSTRACT:
A fuel-injection pump for internal combustion engines, particularly an in-line injection pump for diesel engine, with a control bore in the pump cylinder and with an upper control edge for determining the start of feed and an oblique spill edge for determining the end of feed. The pump piston is rotated about its longitudinal axis in order to set the desired feed quantity, for the purpose of achieving a better regulating behavior of the system as a whole, comprising the fuel-injection pump, feed-quantity regulator and internal-combustion engine. The spill edge is subdivided, along its run over a part of the circumference of the pump piston, into portions with different angles of inclination (.alpha..sub.1, .alpha..sub.2) to the axis of the pump piston. The control-edge portion having the large angle of inclination (.alpha..sub.2) is located in the region of the pump piston which passes over the control bore during the pump-piston stroke in a rotary position of the pump piston for small feed quantities (lowered load range of the internal-combustion).

REFERENCES:
patent: 2696786 (1954-12-01), Fleck et al.
patent: 2810375 (1957-10-01), Froehlich et al.
patent: 3438327 (1969-04-01), Thompson
patent: 4013055 (1977-03-01), Sommer
patent: 4881506 (1989-11-01), Hoecker
patent: 4964789 (1990-10-01), Schueler et al.
patent: 5396871 (1995-03-01), Faupel et al.

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