| 摘要 |
<p>A hydro-mechanical transmission comprising a planetary gear set (10); a speed control device (31,32,33,35) to increase the operating range of the vehicle or stationary equipment, consisting of a two-speed power shift transmission coupled to a shaft (26), with a low gear to increase torque at low output speeds and a high gear to allow for a higher maximum output speed; a launch assist device (70) to limit torque applied to hydraulic branch (22,24) at low output speed, comprising an energy absorption device connected to said hydraulic branch input and a control device to control the amount of energy absorption; a lockup brake (80) coupled to said hydraulic branch input, operative to lock out said hydraulic branch and force all power through said mechanical branch when said main output shaft is operating at a pre-selected percentage of its maximum speed; a planetary steering system comprising.</p> |
