Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1996-10-02
1997-11-18
Wright, Dirk
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
F02D 3500, F16H 6100
Patent
active
056882076
ABSTRACT:
Detecting means for detecting driving conditions of a vehicle such as engine load such as throttle opening, vehicle speed, gear position or gear ratio and so on and memory means for storing characteristics of the vehicle such as engine power characteristic, torque converter characteristic, fuel consumption rate characteristic and so on are provided. Driving shaft torques before and after gear shift, an estimating value of fuel consumption rate and a gear shift point of a transmission are calculated in real time to perform transmission control using the signals from said detecting means and the signals from said memory means. With the construction according to the present invention described above, an automatic transmission can be controlled in real time by calculating a gear shift point of the transmission in a short time through estimating the driving shaft torques before and after gear shift.
REFERENCES:
patent: 5089963 (1992-02-01), Takahashi
patent: 5172609 (1992-12-01), Nitz et al.
patent: 5272939 (1993-12-01), Markyvech et al.
patent: 5588936 (1996-12-01), Uchida et al.
Ibamoto Masahiko
Kuroiwa Hiroshi
Minowa Toshimichi
Ohnishi Hiroshi
Sato Kazuhiko
Hitachi , Ltd.
Hitachi Automotive Engineering Co. Ltd.
Wright Dirk
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