| 摘要 |
PURPOSE:To prolong the service life of a belt by limiting the range of the aimed engine revolution speed so that CVT is operated with the speed ratio of CVT which is a little smaller than the max. value of the controllable range for speed ratio. CONSTITUTION:The range of the aimed engine revolution speed No is limited so that CVT is operated with the speed ratio (e) of CVT which is a little smaller than the max. value (emax) within a controllable range for speed ratio. Therefore, continuous supply of hydraulic medium into the hydraulic cylinder of CVT over the max. value (emax) is suppressed, and the belt of CVT is prevented from being applied with an excessive tension, and the service life of the belt is prolonged. |
