Control device and control method using torque feedback of a lock-up clutch in an automatic transmission
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United States of America Patent
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-
Jun 7, 1994
Grant Date -
N/A
app pub date -
Nov 12, 1992
filing date -
Nov 11, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an automatic transmission provided with a hydraulic lockup clutch which can directly and mechanically engage an input shaft with an output shaft of a torque converter, input torque of the above torque converter is detected and an working oil pressure supplied to said lockup clutch is detected. And a target oil pressure for said lockup clutch is set based on said input torque, supply of the oil pressure is feedback controlled so that an actual working oil pressure gets close to said target oil pressure, and said lockup clutch is controlled to the semi-clutch state.
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