Invention Grant
- Patent Title: Latching clutch control system
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Application No.: US15012433Application Date: 2016-02-01
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Publication No.: US09856959B2Publication Date: 2018-01-02
- Inventor: Craig S. Ross , Paul G. Otanez
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F16H31/00
- IPC: F16H31/00 ; F16H47/04 ; F16D48/02 ; F16H3/62 ; F16H61/00 ; F16D48/06 ; F16H3/66

Abstract:
A clutch latching system is provided for latching and draining a torque transmitting mechanism. The latching clutch control system may include a latching valve, a release valve, and an accumulator. The clutch latching system may include a clutch feed channel configured to provide hydraulic fluid from a pressurized source to a torque transmitting device when the torque transmitting device is engaged and the engine is running. A latching valve connects the clutch feed channel to the torque transmitting device. The latching valve is configured to selectively trap pressurized hydraulic fluid within the torque transmitting device. A hydraulic pressure storage circuit configured to selectively provide pressurized hydraulic fluid to the latching valve to unlatch the latching valve. A multiple speed transmission is also provided.
Public/Granted literature
- US20160146325A1 LATCHING CLUTCH CONTROL SYSTEM Public/Granted day:2016-05-26
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