System and method for controlling engine torque according to transmission hydraulic pressure

An engine torque control system of an engine of a vehicle, the engine torque control system comprising:

• an engine torque converter connected to the engine and an automatic transmission of the vehicle, the engine torque converter configured to distribute engine torque to wheels of the vehicle;
• an engine torque controller that calculates required turbine torque after confirming an engine torque control condition during shifting of the autonomous transmission, derives a stored value of turbine torque factor learning through turbine torque factor learning according to shift type and shift time that began from an actual shifting start point, converts the stored value of turbine torque factor learning into an engine torque control value, and applies the engine torque control value to output of the engine;
• and
• a vehicle data provider that detects sensor signals of the engine and the automatic transmission of the vehicle and transmits the signals to the engine torque controller.

A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:

• program instructions that confirm whether a turbine speed difference satisfies a condition for entering engine torque control during shifting of an automatic transmission;
• program instructions that calculate a required turbine torque for preventing a shift shock using at least one of a turbine angular acceleration, a driving resistance torque, or a coupling solenoid torque;
• program instructions that perform turbine torque factor learning using, as a stored value of turbine torque factor learning, a result obtained by applying one at least one of an accelerator pedal scope (APS), an engine torque, and a transmission fluid temperature at the beginning of actual shifting to a condition for entering the turbine torque factor learning under the condition that no flare occurs during the shifting, applying average turbine acceleration or average engine torque difference reduction to a condition for prohibiting the turbine torque factor learning, and generating and storing the result of the turbine torque factor learning in accordance with the shift time that began from the actual shifting start point;
• program instructions that convert the stored value of turbine torque factor learning into an engine torque control value by the required turbine torque;
• and
• program instructions that apply the engine torque control value to output of an engine of a vehicle.