Gm Global Technolgoy Operations, Inc.

Other

Andy Bennett, Sr

Sean M McGowan

Joel H Pike

An automobile vehicle variable displacement pump includes a pump body having a pump shaft extending through the pump body. A rotor is connected to the pump shaft and co-rotates with the pump shaft. The rotor has multiple radially outwardly directed slots. A vane support ring supports multiple vanes, the vanes individually slidably received in one of the slots of the rotor. A slide is rotatably connected to the pump body having the rotor and the vane support ring positioned within an inner wall of the slide. A bow spring plate defining a biasing member directly contacts the slide to bias the slide to rotate about an arc of curvature.

Variable displacement oil pump slide with bow spring

The oil pan assembly includes an oil pan and a slideable cover. The oil pan includes a base and a sidewall which surrounds the base wherein the base and the sidewall are configured to retain a pool of oil. The oil pan further includes a peripheral flange operatively configured to be coupled to an engine block. The slideable cover is affixed to the oil pan and is configured to maintain the pool of oil proximate to the base of the oil pan.

Oil pan assembly

An exemplary assembly includes a housing including a flange extending from a perimeter of the housing, a cover including an edge tab extending from a perimeter of the cover, a gear set positioned between the housing and the cover, an alignment member positioned between the flange and the edge tab, the alignment member adjacent to an exterior surface of the gear set, and a ring at least partially encircling the housing, the ring including an anti-rotation member and a securing tab. The edge tab and the alignment member are enclosed by the anti-rotation member to maintain a radial position of the gear set.

Transfer case oil pump assembly

A pressure relief valve includes a valve housing having an inlet end with an inlet opening having a valve seat surface surrounding the inlet opening. The valve housing defines an outlet end with a plurality of outlet holes and a valve chamber disposed between the valve seat and the outlet end. One of the plurality of outlet holes has a smaller cross section than the other outlet holes. The valve chamber includes a plurality of radially protruding grooves extending radially beyond a base diameter. One of the plurality of radially protruding grooves has a groove cross section that is smaller than a groove cross section of the remaining grooves, which along with the smaller outlet hole cause a lateral pressure imbalance on the valve member so that the valve member tends to remain in contact with a side of the valve seat while permitting relief flow.

Oil pump pressure relief valve layout

In one or more embodiments, a pressure relief valve for a fluid pump has a valve head that has a recessed outlet-side surface that confronts a support end of a spring such that the valve head extends past the support end of the spring toward a pump outlet. The spring is biased to urge the valve head against a valve seat to a seated position. The spring is also configured to be compressed when fluid pressure at an inlet to the relief valve exceeds fluid pressure at the outlet by at least a predetermined amount such that the valve head is pushed away from the valve seat to an unseated position. A pressure relief valve may have multiple outlets at least some of which have unequal flow areas such that fluid pressure distribution across the flow area of the pressure relief valve cavity is nonsymmetrical.

Growing community of inventors

Rochester Hills, MI, United States of America

Andy Bennett, Sr