| 摘要 |
#CMT# #/CMT# 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. #CMT# : #/CMT# An independent claim is also included for a system for reducing tip-in shock in an automatic transmission. #CMT#USE : #/CMT# Used for reducing tip-in shock in an automatic transmission (claimed). #CMT#ADVANTAGE : #/CMT# The method utilizes electronic throttle control unit for limiting the engine torque by limiting the throttle opening when the reduction control condition is satisfied, thus effectively preventing a tip-in shock, and hence enhancing a shift feel and drivability of a vehicle. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic block representation of an apparatus for reducing tip-in shock in an automatic transmission. 10 : Engine speed detector 20 : Coolant temperature detector 30 : Throttle opening detector 40 : Engine control unit 50 : Electronic throttle control unit. |
