Creep Torque Control for Auto Hold Brake Energy Reduction

The patent applies dynamics by making the creep torque adjustable rather than fixed. The control unit dynamically adjusts the creep torque based on vehicle operating conditions (brake pedal position, vehicle speed, gear position). When the brake pedal is fully pressed, creep torque is reduced to minimize energy consumption and prevent brake judder. When the brake pedal is partially pressed or during normal driving, creep torque is maintained to ensure driving stability. This dynamic adjustment resolves the contradiction between maintaining stability and reducing energy consumption.

The patent implements feedback control by continuously monitoring brake pedal position, vehicle speed, and gear position, then adjusting the creep torque accordingly. The control unit receives feedback from sensors and modifies the creep torque output to match actual driving conditions. During Auto Hold operation, when the brake pedal is fully pressed, the system detects this condition and reduces creep torque to eliminate energy waste. This feedback mechanism ensures driving quality is maintained while preventing unnecessary energy consumption.

The patent applies parameter changes by modifying the creep torque parameter based on brake pedal position. When the brake pedal is fully pressed during Auto Hold, the control unit reduces the creep torque parameter to minimize the difference between engine torque and brake torque. This reduces brake judder and gear-shift shock while maintaining vehicle stationary stability. The parameter adjustment is smooth and controlled, preventing harmful vibrations and shocks during the Auto Hold operation.