Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1993-08-17
1995-11-28
Lorence, Richard M.
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477120, 477121, 477904, F02D 4300, B60K 4106
Patent
active
054702909
ABSTRACT:
A change gear control device is provided for an automatic transmission in a motor vehicle propelled by an internal combustion engine which is operated with an air/fuel mixture having air/fuel ratios ranging from a fuel rich air/fuel ratio to a fuel lean air/fuel ratio depending on driving conditions of the motor vehicle. In this device a first detector detects an engine torque of the internal combustion engine and a second detector detects a vehicle speed of the motor vehicle. A processor processes transmission gear ratios for the automatic transmission. In particular, the processor reads the detected engine torque from the first detector and the detected vehicle speed from the second detector, determines a new transmission gear ratio based upon the engine torque and the vehicle speed, and outputs a signal representing the new transmission gear ratio to the automatic transmission, whereby a gear shifting operation is effected at a timing based on an engine torque variation due to an operating air/fuel ratio change.
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Nikkan Jidoosha Shymbun, Oct. 15, 1992 (English).
Kimura Hiroshi
Minowa Toshimichi
Nishimura Yutaka
Ohyama Yoshishige
Yoshida Yoshiyuki
Hitachi , Ltd.
Lorence Richard M.
Ta Khoi Q.
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