Control apparatus for an automatic transmission of a vehicle and

Details Control apparatus for an automatic transmission of a vehicle and Control apparatus for an automatic transmission of a vehicle and

1997-12-29

2000-02-29

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

701 53, 701 54, 701 87, 477 73, 477 65, 477138, G06G 770, F16H 5914

Patent

active

060320958

ABSTRACT:
An apparatus and method control an automatic transmission of an automobile. When a feedback control is executed by the automatic transmission while the speed is being changed, the control operation may often lose stability due to a large deviation between a target value and a practical value at the start of the feedback control operation being caused by a change in the opening degree of the throttle and a change in the oil temperature in the automatic transmission. To solve such a technical problem, the control apparatus which detects that the automatic transmission is changing the speed, operates the output shaft torque of the automatic transmission, recognizes a point of inflection of the output shaft torque while the speed is being changed, sets a target output shaft torque of the automatic transmission, and sets an initial target value at a moment of the point.

REFERENCES:
patent: 5612873 (1997-03-01), Ogawa
patent: 5826208 (1998-10-01), Kuroiwa et al.
patent: 5931884 (1999-08-01), Ochiai
patent: 5938712 (1999-08-01), Ibamoto et al.

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