| 发明名称 |
Shuttle shifting for a continuously variable transmission |
| 摘要 |
A method for performing a shuttle shift with a continuously variable transmission of a work machine is disclosed. The method may generally include adjusting a swash plate angle of a hydrostatic power unit of the transmission in a first direction to reduce a travel speed of the work machine in an off-going direction, initiating a directional swap between an off-going directional clutch of the continuously variable transmission and an on-coming directional clutch of the continuously variable transmission while the work machine is traveling in the off-going direction and adjusting the swash plate angle of the hydrostatic unit in a second direction after the initiation of the directional swap to reduce slippage across the on-coming directional clutch, wherein the second direction is opposite the first direction. |
| 申请公布号 |
US9086127(B2) |
申请公布日期 |
2015.07.21 |
| 申请号 |
US201214240444 |
申请日期 |
2012.07.12 |
| 申请人 |
CNH Industrial America LLC |
发明人 |
Petrigliano Rocco;Bulgrien Garth Harvey;Dix Peter J.;Kuros Pawel |
| 分类号 |
B60W30/18;F16H41/24;B60W10/103;B60W30/186;F16H61/66;F16H47/04;B60W10/04;B60W10/101;F16H37/08;F16H59/08 |
主分类号 |
B60W30/18 |
| 代理机构 |
|
代理人 |
Watson Sue C. |
| 主权项 |
1. A method for performing a shuttle shift with a continuously variable transmission of a work machine, the continuously variable transmission including a hydrostatic power unit, the method comprising:
adjusting a swash plate angle of the hydrostatic power unit in a first direction to reduce a travel speed of the work machine in an off-going direction; initiating a directional swap between an off-going directional clutch of the continuously variable transmission and an on-coming directional clutch of the continuously variable transmission while the work machine is traveling in the off-going direction, including
disengaging the off-going directional clutch while the work machine is traveling in the off-going direction; andgradually engaging the on-coming directional clutch; and adjusting the swash plate angle of the hydrostatic unit by at least one of: (a) temporarily in the first direction after the initiation of the directional swap before adjusting in a second direction; or (b) in a second direction after the initiation of the directional swap to reduce slippage across the on-coming directional clutch, wherein the second direction is opposite the first direction. |
| 地址 |
New Holland PA US |
