Patent ID: 7214163
Filing Date: 2007-05-08
Classification: B60W,F02D,F16H,Y10T

Abstract:
1. A method for controlling an engine of a vehicle during an upshift thereof, the vehicle being equipped with an automatic transmission, the method comprising: determining whether the automatic transmission is under the upshift; starting a torque reduction control of the engine when the automatic transmission is under the upshift; detecting a current vehicle speed of the vehicle when the automatic transmission is under the upshift; determining a reference deviation as a value variable according to a non-linear function of a predetermined vehicle parameter; calculating a target turbine speed on the basis of the current vehicle speed and a speed ratio of a target shift-speed for the upshift; detecting a current turbine speed; determining whether the current turbine speed is within the reference deviation from the target turbine speed; and finishing the torque reduction control of the engine when the current turbine speed is within the reference deviation from the target turbine speed.