- 专利标题: CONTROL SYSTEM AND METHOD THEREOF FOR MULTISPEED TRANSMISSION
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申请号: US17343933申请日: 2021-06-10
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公开(公告)号: US20210293330A1公开(公告)日: 2021-09-23
- 发明人: Eric Tryon , Charles F. Long , Bryan Hagelskamp
- 申请人: ALLISON TRANSMISSION, INC.
- 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
- 主分类号: F16H61/00
- IPC分类号: F16H61/00 ; F15B11/20 ; F16H61/02 ; F15B13/06 ; F16H61/12
摘要:
An electro-hydraulic control system for a multispeed transmission having a plurality of torque-transmitting mechanisms includes a controller for operably controlling the transmission, a fluid source for supplying hydraulic fluid, and a plurality of torque-transmitting mechanisms being operably selected between an applied and an unapplied state to achieve a plurality of ranges including at least one reverse, a neutral, and a plurality of forward ranges. The system includes a plurality of trim systems having pressure control solenoids and trim valves. The system may also include one or more shift valves disposed in fluid communication with the fluid source and being capable of moving between stroked and de-stroked positions. In any given range, only two of the plurality of torque-transmitting mechanisms may be applied. Moreover, three of the plurality of pressure control solenoids are normally high solenoids, and the remaining solenoids are normally low solenoids.
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