| 摘要 |
PROBLEM TO BE SOLVED: To prevent the deterioration in an increase in acceleration when driving force reduces by a shift start from the lowest when starting with accelerator opening held constant. SOLUTION: When a vehicle speed VSP is less than a shift starting vehicle speed VSP1 to start a shift from the lowest different every accelerator opening APO, target throttle opening tTVO is determined as reference opening corresponding to a map for a low vehicle speed, and afterwards, the target throttle opening tTVO is gradually increased to opening with every accelerator opening APO corresponding to a map for a high vehicle speed for increasing the vehicle speed VSP. Thus, the deterioration in acceleration performance can be prevented after starting the shift by increasing engine output torque by an increase in the target throttle opening tTVO in response to time when becoming the vehicle speed VSP1 for starting the shift from the lowest gear ratio, and this action effect can be realized without changing the driving force at the shift starting vehicle speed VSP1. COPYRIGHT: (C)2007,JPO&INPIT |
