| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent occurrence of shift hunting by improving fuel economy and a drive feeling. <P>SOLUTION: When upshifting is performed after a kick-down shift, (1) upshift is permitted at least on condition of passage of a predetermined time in a state where a current vehicle speed V and an engine load AP are in a first region being a region in an upshift line on a low vehicle speed side relative to a first boundary line A set on a high-speed side by a predetermined vehicle speed relative to the lowest vehicle speed of the upshift line UP; (2) an upshift inhibition hysteresis line C is set based on a downshift line DN to subject the upshift to permission/inhibition control according to the hysteresis line C when V and AP are in a second region surrounded by a second boundary line B slightly higher than a cruise line CR, the upshift line UP and the first boundary line A; and (3) the upshift is permitted when V and P enter in a third region being a region on a high vehicle speed side relative to the first boundary line A and on an low engine load side relative to the second boundary line B. <P>COPYRIGHT: (C)2012,JPO&INPIT |
