发明授权
- 专利标题: Electromagnetically actuated valve device
- 专利标题(中): 电磁致动阀装置
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申请号: US239166申请日: 1988-08-31
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公开(公告)号: US5039069A公开(公告)日: 1991-08-13
- 发明人: Otto Friederichs , Wolfgang Lichtenberg
- 申请人: Otto Friederichs , Wolfgang Lichtenberg
- 申请人地址: DEX Hanover
- 专利权人: WABCO Westinghouse Fahrzeugbremsen
- 当前专利权人: WABCO Westinghouse Fahrzeugbremsen
- 当前专利权人地址: DEX Hanover
- 优先权: DEX3729222 19870902
- 主分类号: F16K31/06
- IPC分类号: F16K31/06 ; B60T8/36 ; F16K31/42
摘要:
A dual electromagnetically actuated valve device for controlling the connection between a fluid pressure source and a consumer facility, and for controlling the pressure relief function for the consumer facility, and for providing a highly sensitive adjustment of the consumer pressure. The device operates with a high flow rate when the pressure difference between inlet pressure and consumer pressure is great, but prevents an overshoot or undershoot of the consumer pressure. The subject invention makes it possible to provide a sensitive adjustment of the consumer pressure in any normal consumer pressure range.The invention controls the cross-sectional opening of a pilot control valve to be continuously adjustable by employing a first electromagnetic control valve which is responsive to a declining current dependent stroke characteristic, and a second electromagnetic control valve which is responsive to a rising current dependent stroke characteristic.