| 摘要 |
PURPOSE:To prevent the occurrence of gear shift hunting by suppressing upshift when an accelerator is returned during ascending on a curved slope. CONSTITUTION:From the absolute value ¦Rtheta¦ of grade resistance and a car speed VSP, the upper limit value imax on the high speed side of a change gear ratio is set at S241 by means of respective reduction functions. A target change gear ratio itgt set from a target horse power based on, for example, grade resistance is compared with the upper limit value imax at S242, in case of itgt> imax, regulation to itgt=imax is effected at S243. |
