Continuously variable transmission control apparatus

Details Continuously variable transmission control apparatus Continuously variable transmission control apparatus

1996-10-18

1998-05-12

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

F16H 5948

Patent

active

057498040

ABSTRACT:
An apparatus for controlling a continuously variable transmission for use with an automotive vehicle. The transmission is operable at a variable speed ratio for transmitting a drive from its input shaft to its output shaft. A target value for the speed of rotation of the input shaft of the transmission is calculated based on the sensed vehicle operating conditions including vehicle acceleration and vehicle speed. The target input shaft speed value is corrected to bring the vehicle acceleration into a predetermined range in the presence of the released accelerator pedal indicative signal. The speed ratio is controlled to bring the input shaft speed into coincidence with the corrected target input shaft speed value. The corrected target input shaft speed value is restricted below an upper limit set based on the vehicle speed.

REFERENCES:
patent: 4784021 (1988-11-01), Morimoto
patent: 4976170 (1990-12-01), Hayashi et al.
patent: 5586953 (1996-12-01), Abo

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