Adaptive K-factor to improve stall-torque management

Details Adaptive K-factor to improve stall-torque management Adaptive K-factor to improve stall-torque management

1998-05-18

1999-08-10

Ta, Khoi Q.

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

477169, 701 58, G06G 770

Patent

active

059350423

ABSTRACT:
A method is provided for adaptively determining a torque-related (K-factor) value for a torque converter in a vehicle and providing adaptive torque management to an automatic transmission. The torque-related K-factor value is computed for a given torque converter as a function of engine speed and difference in torque measured with the vehicle operating in idle neutral and drive. The vehicle dynamically learns the K-factor value and manages torque applied to the transmission by limiting the engine output speed as a function of the learned torque-related K-factor and vehicle speed.

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