Patent ID: 6679692
Filing Date: 2004-01-20
Classification: F04C

Abstract:
A modular oil pump for use in combination with an internal combustion engine having a driving shaft providing rotational power, one or a plurality of engine sumps for collecting lubricating fluid, a fluid reservoir for storing oil for lubrication, and an oil supply conduit for communicating oil from said reservoir to engine parts, comprising:a first gerotor pump, said first gerotor pump having an intake port engageable in communication with at least one engine sump and having a discharge port engageable in sealed communication with a fluid reservoir; a second gerotor pump, said second gerotor pump having an intake port engageable in sealed communication with said fluid reservoir and a discharge port engageable in sealed communication with said oil supply conduit; said first pump having a first housing and an inner gear engaged with an outer gear inside a first cavity, said inner gear having a mounting aperture therein with a center axis communicating axially therethrough; said second pump having a second housing with an interior gear engaged with an exterior gear inside a second cavity, said interior gear having a mounting passage therein with a center axis communicating axially therethrough; and said first pump attachable to said second pump to form a pump unit which can be readily disassembled by detaching said first and second housings with said center axis of said inner gear in line with said center axis of said interior gear, wherein said pump unit is engageable with said engine with said driving shaft cooperatively engaged with said inner gear and said interior gear to provide rotational power thereto.