摘要 |
<p>A shuttle shifting method for a continuously variable transmission automatically selects a manner of shuttle shifting as a function of certain monitored conditions. As one alternative, the direction of operation of the transmission is changed prior to reducing the vehicle speed to zero, and tilt of a swash plate of the hydrostatic power unit of the transmission is held substantially constant, for achieving fast, smooth shifts at faster starting and ending vehicle speeds, without coming to a complete stop. In another alternative, for slower starting and ending speeds, or other conditions such as a temperature condition is present, the vehicle is stopped by changing swash plate angle before effecting a directional change of the transmission and the swash plate.</p> |
申请人 |
CNH AMERICA LLC;DIX, PETER, J.;BULGRIEN, GARTH, H.;HARTMAN, BRIAN, A.;PRASSE, ROBERT, C. |
发明人 |
DIX, PETER, J.;BULGRIEN, GARTH, H.;HARTMAN, BRIAN, A.;PRASSE, ROBERT, C. |