Control system for motor vehicles equipped with a torque convert

Details Control system for motor vehicles equipped with a torque convert Control system for motor vehicles equipped with a torque convert

1995-12-22

1997-06-10

Pitts, Andrea L.

Interrelated power delivery controls, including engine control

Transmission control

Including fluid drive

477 77, 477111, 477181, F16H 5914

Patent

active

056370520

ABSTRACT:
In a control system for controlling motor vehicles in such a manner that the drive force of the vehicle is determined by the accelerator pedal stroke and the vehicle speed, the fuel consumption is minimized by appropriately selecting the gear ratio of the power transmission system under each current operating condition. In particular, the present invention accounts for the slip ratio of the lock-up clutch as well as the transmission efficiency of the torque converter by noting the fact that the lock-up clutch operates under semi-tight conditions as well as under tight and loose conditions.

REFERENCES:
patent: 4905544 (1990-03-01), Ganoung
patent: 5274553 (1993-12-01), Boardman

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