Fuel injection pump for internal combustion engines

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

1989-01-27

1990-10-23

Smith, Leonard E.

Pumps

Expansible chamber type

Pumping member position controlled port

417499, 417500, 123300, 123503, F04B 704, F02M 5926

Patent

active

049647890

ABSTRACT:
A fuel injection pump for internal combustion engines has a pump piston that is axially and rotationally movable in a cylinder and has a control edge and a diversion edge that defines a recess in the jacket face of the pump piston. To limit and adjust the effective supply stroke, the control edge and the diversion edge cooperate with a control opening in the cylinder, which opening communicates with a fuel-filled low-pressure chamber. To prevent cavitation damage during the diversion process, a pre-diversion groove, which extends approximately parallel to the diversion edge, is provided in the portion of the jacket face of the pump piston defined by the control edge and the diversion edge. It is disposed at a distance from the diversion edge such that immediately before the entry of the diversion edge into the control opening, representing the onset of diversion, it connects the pump work chamber, which is at high pressure, to the control opening.

REFERENCES:
patent: 2356511 (1944-08-01), Descourtis
patent: 2420164 (1947-05-01), Bremser
patent: 3963384 (1976-06-01), Bastennof
patent: 4163634 (1979-08-01), Powers
patent: 4187060 (1980-02-01), Ellis et al.
patent: 4294210 (1981-10-01), Bassoli et al.
patent: 4531488 (1985-07-01), Kawamura et al.
patent: 4611566 (1986-09-01), Kampichler et al.
patent: 4830587 (1989-05-01), Guntert et al.
patent: 4881506 (1989-11-01), Hoecker
patent: 4897024 (1990-01-01), Hatz et al.

Affiliated with

Also associated with

Rating

Fuel injection pump for internal combustion engines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fuel injection pump for internal combustion engines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel injection pump for internal combustion engines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-763408