【発明の名称】電磁操作可能な弁装置

Japanese Patent JP2691741

B2

2.1. Known electromagnetically actuated valve devices for controlling the connection between a hydraulic fluid source and a consumer system (inlet valve) or for controlling the pressure relief of a consumer system, have the disadvantage that they have only limited suitability for finely adjusting the consumer pressure, since they operate with a relatively large pressure drop between the inlet pressure and the consumer pressure with a large flow rate, which leads to the consumer pressure overshooting and undershooting. Other known valve devices of this type have a consumer-pressure-dependent response and therefore likewise have only limited suitability for the described purpose. The invention proposes solutions which permit fine adjustment of the consumer pressure in each consumer pressure range. 2.2. The invention proposes that the opening cross-section of an initial control valve, known per se, be made continuously adjustable by means of an actuating magnet, likewise known per se, having a flow- dependent movement characteristic; it is additionally proposed that the opening cross-section of a main valve, known per se, also be made continuously adjustable as a function of the flow, by coupling an initial control valve member in a fixed manner to a main valve member. 2.3. An advantageous area of application of the invention is for electrically controlled and/or electrically regulated motor vehicle brake systems (for example anti-lock braking systems).

Otto Friedrichs
Wolfgang Lichtenberg

JP21089588A

December 17, 1997

August 26, 1988

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Vabco Vesting House Farts Oychbremsen Geselsyaft Mitt Besilyen Haftung

B60T8/36; F16K31/06; F15B13/043; F16K31/42; (IPC1-7): F16K31/06

JP60132187A

【文献】米国特許2989666(US,A)
【文献】米国特許3030981(US,A)
【文献】米国特許4623118(US,A)

Osamu Nakahira

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