发明授权
US5775361A Method and apparatus for enhancing stability in hydraulic flow control
失效
提高液压流量控制稳定性的方法和装置
- 专利标题： Method and apparatus for enhancing stability in hydraulic flow control
- 专利标题（中）： 提高液压流量控制稳定性的方法和装置
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申请号： US365059申请日： 1994-12-28
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公开(公告)号： US5775361A公开(公告)日： 1998-07-07
- 发明人: Edward H. Phillips
- 申请人： Edward H. Phillips
- 申请人地址： MI Southfield
- 专利权人： Techco Corporation
- 当前专利权人： Techco Corporation
- 当前专利权人地址： MI Southfield
- 主分类号： B62D5/06
- IPC分类号： B62D5/06 ; G05D7/01 ; G05D16/02 ; F16K17/00
摘要：
Methods and devices for reducing instability in hydraulic systems are disclosed. A flow control device having an output fitting and a spring-biased piston reciprocally movable in a cylinder past a bypass hole is disclosed. The improvement consisting of metering passages formed in a flow control device to provide hydraulic resistance to dampen the piston. Alternatively, disclosed is a flow control piston having a valving sub-assembly which is resiliently biased. The valving sub-assembly is movable to substantially suppress the flow rate ripple by bypassing a dominant portion of the flow rate ripple. Finally, methods for dampening the resonance, creating resistance, as well as bypassing the flow rate ripple are disclosed.
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