Integral engine oil pump and pressure regulator

Details Integral engine oil pump and pressure regulator Integral engine oil pump and pressure regulator

1991-03-11

1992-02-04

Cross, E. Rollins

Internal-combustion engines

Lubricators

Crankcase, pressure control

123198C, 417283, 418171, F01M 102

Patent

active

050851870

ABSTRACT:
A combination gear type oil pump and pressure regulator is disclosed, particularly for a lubricating system of an internal combustion engine. Elements of a gear type pump are housed within an internal recess in the engine crankcase. An end cover is positioned between an enlarged portion of the crankshaft and gear elements and is biased thereagainst by a carefully selected spring which is positioned between the cover member and the enlarged crankshaft portion so that when a predetermined high pressure is formed at the pump outlet, the spring allows the end cover to move away from the pump elements to relieve the pressure by spillage in to the engine crankcase.

REFERENCES:
patent: 3208392 (1965-09-01), Garrison et al.
patent: 3443522 (1969-05-01), Schindler
patent: 3822965 (1974-07-01), Drutchas et al.
patent: 4253803 (1981-03-01), Wormmeester et al.
patent: 4974562 (1990-12-01), Ishii et al.
patent: 4976595 (1990-12-01), Taniguchi

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