Invention Grant
- Patent Title: Vane pump with multiple control chambers
- Patent Title (中): 具有多个控制室的叶片泵
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Application No.: US14840484Application Date: 2015-08-31
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Publication No.: US09534597B2Publication Date: 2017-01-03
- Inventor: Matthew Williamson , David R. Shulver , Cezar Tanasuca
- Applicant: Magna Powertrain Inc.
- Applicant Address: CA Concord
- Assignee: Magna Powertrain Inc.
- Current Assignee: Magna Powertrain Inc.
- Current Assignee Address: CA Concord
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: F04C14/18
- IPC: F04C14/18 ; F04C2/00 ; F01C20/18 ; F04C14/22 ; F04C2/344

Abstract:
A variable capacity vane pump for an automobile includes a pump control ring positioned within the housing to move about a pivot. A rotor is positioned within a cavity of the control ring such that a position of the control ring determines an offset between a center of the cavity and an axis of rotation of the rotor. A first control chamber is provided between the pump housing and a first outer surface of the control ring. The first outer surface is positioned on an opposite side of the control ring as the working fluid chambers within the cavity. A second control chamber is provided between the pump housing and a second outer surface of the control ring. A return spring biases the control ring toward a position of maximum volumetric capacity against the forces created by the pressurized fluid within the first and second control chambers.
Public/Granted literature
- US20150369240A1 Vane Pump With Multiple Control Chambers Public/Granted day:2015-12-24
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