Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1996-05-10
1998-01-06
TA, Khoi Q.
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477116, 477117, F16H 6120
Patent
active
057048738
ABSTRACT:
A control system for an automatic transmission, has a fluid transmission unit for transmitting the rotation of an engine to a speed change unit; a clutch adapted to be applied when a forward running range is selected to transmit the rotation of the fluid transmission unit to the transmission mechanism of the speed change unit; a stopped state detector for detecting a stopped state of a vehicle wherein the stopped state is defined as a forward running range being selected, the throttle opening being fully closed, the brake pedal being depressed, and the vehicle speed being substantially zero; engine speed detector for detecting the engine speed; clutch operation force generating means for generating the application force of the clutch; and a control unit. The control unit releases the clutch by reducing the engaging force of the clutch when the stopped state of the vehicle is detected by the stopped state detecting means. The engine RPM when the clutch is released is stored as an initial engine RPM in storage means so that a neutral ending engine RPM is set on the basis of the initial engine RPM. The clutch is applied by strengthening its application force if the stopped state of the vehicle is not detected when the clutch is released and if the engine RPM exceeds the neutral ending engine RPM.
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Hayabuchi Masahiro
Iwata Akihito
Mikami Kazuhiro
Yamamoto Yoshihisa
Aisin Aw Co. Ltd.
Ta Khoi Q.
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