发明名称 |
ELECTROHYDRAULIC TRANSDUCER, ESPECIALLY FOR CONTROLLING A PRESSURE IN AN AUTOMATIC TRANSMISSION |
摘要 |
<p>PCT No. PCT/FR80/00006 Sec. 371 Date Sep. 18, 1980 Sec. 102(e) Date Sep. 15, 1980 PCT Filed Jan. 17, 1980 PCT Pub. No. W080/01502 PCT Pub. Date Jul. 24, 1980.An electromagnetic coil 29 exerts an attractive force on a movable plate 30 of magnetic material, within which is mounted a ball 32 of non-magnetic material blocking the end of a passage 33 for the hydraulic fluid. The apparatus also comprises electronic means for supplying the coil 29 by means of a pulsed unidirectional current, the mark/space ratio and mean value of which are subject to control by an operating magnitude represented by an electric control signal. The apparatus can be utilized as a hydraulic potentiometer for the determination of a control pressure proportional to an electric control signal in a hydraulic control circuit of an automatic transmission of industrial vehicles.</p> |
申请公布号 |
EP0022833(B1) |
申请公布日期 |
1984.02.15 |
申请号 |
EP19800900239 |
申请日期 |
1980.07.29 |
申请人 |
REGIE NATIONALE DES USINES RENAULT;RENAULT VEHICULES INDUSTRIELS SOCIETE DITE: |
发明人 |
BOUVET, JEAN-MARIE;QUEMERAIS, PHILIPPE |
分类号 |
F16H61/02;F16K31/06;G05D16/20;(IPC1-7):15B5/00 |
主分类号 |
F16H61/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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