Invention Grant
- Patent Title: Hydraulic control system for an automatic transmission
- Patent Title (中): 自动变速器液压控制系统
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Application No.: US13288656Application Date: 2011-11-03
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Publication No.: US08702548B2Publication Date: 2014-04-22
- Inventor: Steven P. Moorman
- Applicant: Steven P. Moorman
- Assignee: GM Global Technology Operations
- Current Assignee: GM Global Technology Operations
- Main IPC: F16H31/00
- IPC: F16H31/00

Abstract:
A hydraulic control system for a transmission includes a pressure regular subsystem, a transmission range selection control subsystem, and a clutch control subsystem. The pressure regulator subsystem includes a source of pressurized hydraulic fluid for providing a flow of hydraulic fluid. The transmission range selection control subsystem includes a set of four valve assemblies actuated by a pair of solenoids. And the clutch control subsystem provides pressurized hydraulic fluid to a plurality of clutch actuators activated by a plurality of variable force solenoids through a plurality of valve assemblies. The plurality of valve assemblies of the clutch control subsystem are in fluid communication with the transmission range selection control subsystem, and the transmission range selection control subsystem employs the pressurized hydraulic fluid to engage a range selection through the clutch control subsystem.
Public/Granted literature
- US20130112524A1 HYDRAULIC CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION Public/Granted day:2013-05-09
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