公开(公告)号：US20190338771A1

公开(公告)日：2019-11-07

申请号：US15968855

申请日：2018-05-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andy Bennett, SR. ,  Sean M. McGowan ,  Bryan K. Pryor ,  David R. Staley

IPC: F04C2/344 ,  F01M1/02 ,  F01M1/16 ,  F04C14/22

Abstract: A variable displacement vane pump includes a housing, an expandable vane control ring, a rotor, a plurality of vanes, slider ring, and biasing means. The expandable vane control ring defines a gap. The plurality of vanes may be slidably disposed in the rotor. The slider ring is pivotally affixed to the housing via a pivot. The slider ring may form a plurality of pumping chambers with the expandable vane control ring, the rotor and the vanes. The distal end of each vane in the plurality of vanes is configured to abut and slide along an inner surface of the slider ring while the rotor rotates and the expandable vane control ring is configured to temporarily contract when intermittent friction is experienced between the inner surface and any vane in the plurality of vanes—so that the plurality of vanes continuously slide along an inner surface of the slider ring.

公开(公告)号：US20200309120A1

公开(公告)日：2020-10-01

申请号：US16371874

申请日：2019-04-01

Applicant: GM Global Technology Operations LLC

Inventor： Andy Bennett, SR. ,  Sean McGowan

IPC: F04C14/22

Abstract: 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.

公开(公告)号：US20200025198A1

公开(公告)日：2020-01-23

申请号：US16039899

申请日：2018-07-19

Applicant: GM Global Technology Operations LLC

Inventor： Andy Bennett, SR. ,  Sean M. McGowan

IPC: F04C15/00 ,  F04C2/10 ,  F04C2/08

Abstract: A sprocket gerotor pump includes an outer gerotor gear configured to rotate about a first axis. The outer gerotor gear includes an outer gear body including a plurality of internal gear teeth extending from the outer gear body toward the first axis. The sprocket gerotor pump includes an inner gerotor gear configured to rotate about a second axis. The inner gerotor gear includes an inner gear body and a plurality of external gear teeth extending from the inner gerotor gear away from the second axis. The external gear teeth mesh with the internal gear teeth. Rotating the outer gerotor gear causes rotation of the inner gerotor gear. The sprocket gerotor pump further includes a sprocket integrally coupled with the outer gerotor gear such that the sprocket and the outer gerotor gear collectively form a one-piece structure. The sprocket is driven by a chain.

公开(公告)号：US20200080555A1

公开(公告)日：2020-03-12

申请号：US16128999

申请日：2018-09-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andy Bennett, SR. ,  Sean M. McGowan ,  Mark R. Claywell

IPC: F04C14/22 ,  F04C2/344

Abstract: A variable displacement pump is provided which better distributes stress across the rotor structure thereby reducing the risk of the rotor cracking and/or failing. The variable displacement pump includes a housing, a vane control ring, a rotor, a plurality of vanes, a slider ring, a biasing means, and a regulator valve. The housing defines an inlet port and a discharge port. The rotor may be rotationally driven by a drive shaft and coaxially aligned with the drive shaft. The rotor may define a plurality of primary ribs and a plurality of corresponding secondary ribs with an aperture defined between each primary rib and secondary rib. Each primary rib defines a primary rib thickness and each secondary rib defines a secondary rib thickness which is less than the primary rib thickness.

公开(公告)号：US20200032791A1

公开(公告)日：2020-01-30

申请号：US16043814

申请日：2018-07-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andy Bennett, SR. ,  Anthony Anzalone ,  Bryan K. Pryor

IPC: F04C14/22 ,  F04C2/344 ,  F16F1/12

Abstract: Variable displacement pumps and biasing assemblies for the same are disclosed. Example pumps may include a housing having an inlet and an outlet, and a rotor fixed for rotation with a shaft, with the shaft rotatably mounted within the housing. The pump may further include a plurality of radially extending vanes slidably disposed in the rotor, and a pivotable ring member defining a control chamber about the rotor, with the ring member being pivotable within the housing to vary an eccentricity of the ring member with respect to the rotor. The pump may further include a biasing assembly applying a biasing force to the ring member in a first direction about the shaft, with the biasing assembly including at least one resilient element extending longitudinally along a stand, and a sliding support slidably disposed on the stand and laterally supporting the resilient element with respect to the stand.