Invention Grant
- Patent Title: Transmission hydraulic control system having independently controlled stator cooling flow
- Patent Title (中): 传动液压控制系统具有独立控制的定子冷却流量
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Application No.: US12633513Application Date: 2009-12-08
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Publication No.: US08413437B2Publication Date: 2013-04-09
- Inventor: Chinar S. Ghike , James D. Hendrickson , Zhe Xie , Terry Johnecheck
- Applicant: Chinar S. Ghike , James D. Hendrickson , Zhe Xie , Terry Johnecheck
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F16D31/02
- IPC: F16D31/02 ; F15B13/04

Abstract:
A hydraulic control system includes a source of pressurized hydraulic fluid for providing a pressurized hydraulic fluid, a main line circuit in fluid communication with the source of pressurized hydraulic fluid, a regulation valve in communication with the source of pressurized hydraulic fluid, the regulation valve moveable between a plurality of positions, and a lubrication valve in communication with the regulation valve, the lubrication valve moveable between a plurality of positions. A lubrication circuit and a cooling circuit are in communication with the lubrication valve. The regulation valve allows pressurized hydraulic fluid to communicate with the lubrication valve after the main line circuit is saturated, the lubrication valve allows fluid communication between the regulation valve and the lubrication circuit until the lubrication circuit is saturated, and the lubrication valve allows fluid communication between the regulation valve and the cooling circuit and the lubrication circuit after the lubrication circuit is saturated.
Public/Granted literature
- US20110131969A1 TRANSMISSION HYDRAULIC CONTROL SYSTEM HAVING INDEPENDENTLY CONTROLLED STATOR COOLING FLOW Public/Granted day:2011-06-09
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