Tip-in shock reducing method for automatic transmission, involves limiting engine torque by limiting throttle opening through control of electronic throttle control unit when reduction control condition is satisfied

摘要

The method involves determining whether an engine torque reduction control condition is satisfied when tip-in occurs during downshift control in a coasting state. An engine torque is limited by limiting a throttle opening through control of an electronic throttle control unit (50) when the control condition is satisfied. The engine torque limitation is released by gradually increasing the limited torque for a preset period. An independent claim is also included for a system for reducing tip-in shock in an automatic transmission.