Patent ID: 7121978

Claim:
A shift shock reduction system for use in a motor vehicle powered by an internal combustion engine through an automatic transmission, comprising: a first section that causes the engine to produce a normal engine torque in accordance with an existing operation condition of the vehicle; a second section that changes an output rotation of the engine to an output rotation of the transmission in accordance with an existing gear ratio that is derived from a rate between a rotation speed of an input member of the transmission and a rotation speed of an output member of the same; a third section that corrects the engine torque upon sensing start of a shift shock reduction operation; a fourth section that detects completion of the correction of the engine torque; and a fifth section that returns the corrected engine torque to the normal engine torque when the fourth section detects the completion of the correction of the engine torque, wherein the fourth section detects the completion of the engine torque correction by making reference to a change rate per time of the existing gear ratio.