Lock-up control system for automobile automatic power transmissions
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United States of America Patent
Stats
-
Apr 8, 1986
Grant Date -
N/A
app pub date -
Jan 26, 1984
filing date -
Jan 27, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control system for an automobile automatic power transmission provided with a hydraulic torque converter having a lock-up mechanism for directly connecting the input and output shafts of the torque converter. The control system uses a lock-up release data line and a lock-up engage data line which is positioned at the higher-engine speed side with respect to the lock-up release data line for controlling engagement of the lock-up mechanism. The system further provides a modified lock-up engage data line, which is between the lock-up engage and release lines, for use when the engine throttle valve is opened again after it has been completely closed, so that the lock-up mechanism is engaged as soon as the throttle valve is opened beyond the modified lock-up engage data line.
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