Invention Grant
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
- Patent Title: Variator switching valve scheme for a torroidal traction drive transmision
- Patent Title (中): 变速器切换阀方案用于环形牵引驱动传动
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Application No.: US13325372Application Date: 2011-12-14
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Publication No.: US08840522B2Publication Date: 2014-09-23
- Inventor: Charles F. Long , Darren J. Weber , John W. E. Fuller
- Applicant: Charles F. Long , Darren J. Weber , John W. E. Fuller
- Applicant Address: US IN Indianapolis
- Assignee: Allison Transmission, Inc.
- Current Assignee: Allison Transmission, Inc.
- Current Assignee Address: US IN Indianapolis
- Agency: Barnes & Thornburg LLP
- Main IPC: F16H15/38
- IPC: F16H15/38 ; F16H61/664

Abstract:
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.
Public/Granted literature
- US20120202642A1 Variator Switching Valve Scheme For A Torroidal Traction Drive Transmision Public/Granted day:2012-08-09
Information query
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