Invention Grant
- Patent Title: Multiple stage passive variable displacement vane pump
- Patent Title (中): 多级无源可变排量叶片泵
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Application No.: US13896573Application Date: 2013-05-17
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Publication No.: US09206800B2Publication Date: 2015-12-08
- Inventor: Guiseppe Rago
- 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: F03C2/00
- IPC: F03C2/00 ; F04C2/00 ; F04C14/18 ; F04C2/04 ; F04C14/22 ; F04C2/344

Abstract:
The present invention is a multiple stage variable displacement vane pump comprising a pressure regulating spring guide. A first spring and a second spring may be controlled by said pressure regulating spring guide. The present invention does not require a solenoid or electronic control. Control of flow and speed is achieved through operable of the pressure regulating spring guide that causes the first spring and second spring to be operable in relation to one another, but for the first spring and the second spring to be operable independently of each other. The springs may be positioned to be inline in relation to each other. Rotation of a slide and pressure exerted thereby upon the pressure regulating spring guide may create a first spring regulation stage and a second spring regulation stage.
Public/Granted literature
- US20130309113A1 Multiple Stage Passive Variable Displacement Vane Pump Public/Granted day:2013-11-21
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