Automatic transmission control system responsive to road surface

Details Automatic transmission control system responsive to road surface Automatic transmission control system responsive to road surface

1990-12-27

1993-06-08

Lall, Parshotam S.

Boots, shoes, and leggings

74866, 36442603, B60K 3100

Patent

active

052185419

ABSTRACT:
A control unit of automatic transmission for vehicle with continuous transmission mechanism which controls torque ratio of a transmission portion of the transmission mechanism by a target torque ratio comprises a road surface condition detecting portion which detects road surface condition according to input from low-.mu. road detecting means and a shift judging processing portion which corrects the target torque ratio with a road surface condition coefficient according to input from the road surface condition detecting portion and which outputs shift command according to the corrected target torque ratio and the actual torque ratio.

REFERENCES:
patent: 4779696 (1988-10-01), Harada et al.
patent: 5062049 (1991-10-01), Taylor

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