| 摘要 |
PROBLEM TO BE SOLVED: To prevent the event that braking force is suddenly increased to worsen drivability when power transmission is cut off during down-shift executed with a reduction of a vehicle speed, by increasing engine output with the control of an idle rotating speed when braking force is generated in the case that a target idle rotating speed is higher than a down-shift rotating speed. SOLUTION: When the target idle rotating speed neidl is higher than the down-shift rotating speed nedn and a brake is ON or predetermined braking force of vehicle deceleration≥G1 is being generated, a down-shift line is changed to the side of a high vehicle speed so that down-shift is executed on the side of high rotation beyond the target idle rotating speed neidl. Thus, down-shift is executed before the idle rotating speed is controlled, and engine output is increased with the control of the idle rotating speed. Along therewith, the brake is further footed to prevent a great change of braking force when power transmission is cut off during down-shift. COPYRIGHT: (C)2011,JPO&INPIT |
