Oil pressure control system of automatic transmission for vehicle

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United States of America Patent

PATENT NO 8935439
SERIAL NO

13754907

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An oil pressure control system of an automatic transmission for a vehicle includes a lock-up clutch, a TC regulator valve, an LC control valve, an LC shift valve, an oil cooler, a control area determination device, a torque transmission capacity calculator, a high load state determination device, and an oil pressure controller. The oil pressure controller is configured to control a TC regulator pressure outputted by a TC regulator valve, so that a torque transmission capacity of a lock-up clutch is greater than a reference torque transmission capacity calculated by the torque transmission capacity calculator, if a control area determined by the control area determination device is a complete engagement area and the high load state determination device determines that an operational state is in a high load state.

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Patent Owner(s)

  • HONDA MOTOR CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyata, Satoru Wako, JP 10 174
Murasawa, Hiroki Wako, JP 3 6
Shibahara, Akihiro Wako, JP 10 53

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