Apparatus and method for controlling creep torque in a power tra

Details Apparatus and method for controlling creep torque in a power tra Apparatus and method for controlling creep torque in a power tra

1998-04-30

2000-09-05

Marmor, Charles A

Interrelated power delivery controls, including engine control

Transmission control

With clutch control

477 74, 477 76, 477175, 192 82T, B60K 4128

Patent

active

061135151

ABSTRACT:
The power train of a motor vehicle has an automated clutch and a control unit which causes one or more actuators to change the rate of torque transmission by the clutch from the engine to the transmission of the power train in response to appropriate signals from various sensors. When the transmission is shifted into gear while the engine is idling, while the brake or brakes are not applied and while the gas pedal is not depressed, the setting of the clutch is such that the transmission causes the motor vehicle to carry out a crawling movement as a result of a change of the rate of torque transmission by the clutch from the idling engine to the transmission from a first value (e.g., zero) to a second value as a function of the monitored temperature of the clutch.

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