Vehicle drive force controller

Details Vehicle drive force controller Vehicle drive force controller

1998-09-08

2000-11-14

Louis-Jacques, Jacques H.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

701 51, 701 58, 701 53, 477 37, 477 43, G06F 770

Patent

active

061482579

ABSTRACT:
In a vehicle equipped with a continuously variable transmission, sensors detect a vehicle speed, an accelerator depression degree and an output rotation speed of the transmission. The minimum required drive shaft drive torque is calculated from the vehicle speed and the accelerator depression degree. A target input rotation speed of the transmission for achieving the minimum required drive shaft drive torque with the least engine fuel consumption is calculated according to the vehicle speed. The input rotation speed is controlled to this target input rotation speed. The target engine output torque to generate the minimum required drive shaft drive torque is calculated, and an engine throttle opening is controlled to obtain this torque. As a result, the required vehicle drive force is obtained with the minimum engine fuel consumption.

REFERENCES:
patent: 4658360 (1987-04-01), Osamai et al.
patent: 4893526 (1990-01-01), Tokoro
patent: 5597371 (1997-01-01), Toukura
patent: 5605131 (1997-02-01), Ohno et al.
patent: 5722500 (1998-03-01), Toukura et al.
patent: 5730680 (1998-03-01), Toukura
patent: 5749804 (1998-05-01), Toukura
patent: 5938712 (1999-08-01), Ibamoto et al.

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