| 摘要 |
<p>A hydraulic nonstep transmission apparatus with low costs and high reliability is provided which is capable of automatically determining a speed-change ratio corresponding to engine speed and motor load and capable of smoothly performing clutch operation to a clutch-on state through a clutch meeting state. The apparatus comprises: a clutch means provided in a hydraulic closed circuit; a governor hydraulic actuator for moving the motor swash plate toward its vertical position in accordance with an increase in the rotational speed of an engine; and a governor hydraulic pressure switch means provided in a governor hydraulic fluid passage of the governor hydraulic actuator and drivingly connected to the clutch means to disconnect the governor hydraulic pressure during the period from a clutch-off state to the elapse of the clutch meeting state and to supply the governor hydraulic pressure before and after the transition to clutch-on after substantially completing the clutch meeting state.</p> |
