发明授权
- 专利标题: High efficiency hydraulic transmission control system
- 专利标题(中): 高效液压传动控制系统
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申请号: US12707414申请日: 2010-02-17
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公开(公告)号: US08413777B2公开(公告)日: 2013-04-09
- 发明人: Philip C. Lundberg , Kevin Michael Dougan , Bret M. Olson
- 申请人: Philip C. Lundberg , Kevin Michael Dougan , Bret M. Olson
- 申请人地址: US MI Detroit
- 专利权人: GM Global Technology Operations LLC
- 当前专利权人: GM Global Technology Operations LLC
- 当前专利权人地址: US MI Detroit
- 主分类号: B60W10/02
- IPC分类号: B60W10/02 ; B60W10/10 ; F16D25/10
摘要:
Pairs of variable feed solenoid valves provide fluid to a pair of input clutch actuators and a pair of inlet ports of a first logic valve. The position of the first logic valve spool is controlled by a solenoid valve. A first pair of outlet ports of the first logic valve provide hydraulic to a first piston which selects two speed ratio. A second pair of outlet ports of the first logic valve provide fluid to a pair of inlet ports of a second logic valve. The position of the second logic valve spool is controlled by fluid from the input clutch circuits. A first pair of outlet ports of the second logic valve provide fluid to a second piston which selects two other speed ratios and a second pair of outlet ports of the second logic valve provide fluid to a third piston which selects two additional speed ratios.
公开/授权文献
- US20110198178A1 HIGH EFFICIENCY HYDRAULIC TRANSMISSION CONTROL SYSTEM 公开/授权日:2011-08-18
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