发明授权
US08840522B2 Variator switching valve scheme for a torroidal traction drive transmision
有权
变速器切换阀方案用于环形牵引驱动传动
- 专利标题: Variator switching valve scheme for a torroidal traction drive transmision
- 专利标题(中): 变速器切换阀方案用于环形牵引驱动传动
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申请号: US13325372申请日: 2011-12-14
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公开(公告)号: US08840522B2公开(公告)日: 2014-09-23
- 发明人: Charles F. Long , Darren J. Weber , John W. E. Fuller
- 申请人: Charles F. Long , Darren J. Weber , John W. E. Fuller
- 申请人地址: US IN Indianapolis
- 专利权人: Allison Transmission, Inc.
- 当前专利权人: Allison Transmission, Inc.
- 当前专利权人地址: US IN Indianapolis
- 代理机构: Barnes & Thornburg LLP
- 主分类号: F16H15/38
- IPC分类号: F16H15/38 ; F16H61/664
摘要:
An apparatus for controlling a variator having at least one roller between two toroidal disks may include at least one actuator responsive to fluid pressure at separate high side and low side fluid inlets thereof to control torque applied by the at least one roller to the disks. First and second variator switching valves may each receive a first fluid at a first pressure and a second fluid at a second lesser pressure. The first and second variator switching valves supply the first fluid to the high side fluid inlet and the second fluid to the low side fluid inlet during two of four different operational states together defined by the variator switching valves, and supply the second fluid to the high side fluid inlet and the first fluid to the low side fluid inlet during each of the remaining two of the four different operational states.
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