Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1996-02-29
1997-10-28
Wright, Dirk
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477906, F16H 5904, F16H 5924
Patent
active
056812400
ABSTRACT:
A gearshift controlling system for controlling a vehicle automatic transmission. In the system, a first alternative throttle opening degree is predetermined in case of failure of a throttle position sensor, and a second alternative throttle opening is similarly determined such that a gear ratio can be determined based on the detected vehicle speed and the second alternative engine load in a gear ratio decreasing or increasing direction. Either of the first alternative throttle opening degree or the second alternative throttle opening is selected and the gear ratio to be shifted to is determined in accordance with the predetermined gearshift schedule based on the detected vehicle speed and the selected alternative engine load, to output the gearshift command, thereby preventing unexpected gearshift to occur.
REFERENCES:
patent: 4823644 (1989-04-01), Ohkumo
patent: 4922425 (1990-05-01), Mack et al.
patent: 4975844 (1990-12-01), Holbrook et al.
patent: 5056022 (1991-10-01), Witkowski et al.
patent: 5117711 (1992-06-01), Iizuka
patent: 5366424 (1994-11-01), Wataya
Sunada Satoru
Tanizawa Shoichi
Honda Giken Kogyo Kabushiki Kaisha
Wright Dirk
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