Patent ID: 8230975

Claim:
An apparatus for supplying oil to an internal combustion engine, comprising: a variable displacement type vane pump including biasing means for eccentrically displacing a vane carrying ring thereof relative to a rotor thereof to provide first and second flow rates; and a regulator including, a first passageway intercommunicable with a source fluid under pressure and means for displacing said vane carrying ring; a second passageway intercommunicable with said displacing means and a drain; a spool having a portion displaceable in a chamber along a line of travel between a first position obstructing said first passageway and nonobstructing said second passageway, and a second position obstructing said second passageway and nonobstructing said first passageway; means for biasing said spool in a first direction along said line of travel to position said spool portion in said first position; a third passageway intercommunicable with said fluid pressure source and a surface of said spool disposed at an angle to said line of travel, functional upon communication with said fluid pressure source to displace said spool portion in said second position; and a valve in said third passageway operable in a first position obstructing said third passageway and a second position nonobstructing said third passageway.