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    • 10. 发明申请
    • ELECTROHYDRAULIC CHECK DEVICE
    • 电液关闭
    • WO1995028592A1
    • 1995-10-26
    • PCT/DE1995000518
    • 1995-04-13
    • SIEMENS AKTIENGESELLSCHAFTKAPPEL, AndreasMOCK, RandolfMEIXNER, Hans
    • SIEMENS AKTIENGESELLSCHAFT
    • F16K31/00
    • F02M59/468F02M59/466F02M2200/04F16K31/004F16K31/008Y10T137/86622
    • In all areas of the hydraulic control and regulation technology, check and shut-off valves that react quickly and without delay are required. With such valves, the dynamic properties of fuel injection systems could also be considerably improved, and their design could be simplified. An electrohydraulic check device with a simple and compact structure is disclosed that works in a reliable manner even at high actuation frequencies (f > 1 kHz) and ensures shut-off times in a range tau lower than 0,1 ms. The check device has a piezoelectric actuator (P) that acts on two mutually coupled hydraulic alternating transformers with identical reduction ratios. The essential components of the check device are a pressure piston (DK) driven by the actuator (P), an alternating piston (HK) axially movable in a cylindrical bore (ZY) of the pressure piston (DK) and a chamber (KB) into which open supply and outflow channels (B2, G2, B3, G3) for the medium to be shut-off. By controlling the actuator (P), the dumbbell-shaped alternating piston (HK) may be moved practically without delay in the pressure piston bore (ZY), closing the supply or outflow channels (B2, B2). The invention has application in check and shut-off valves, as well as in fuel injection systems.
    • 在液压和控制技术各个领域的拖延和需要关闭和Absteuerventile快速切换。 与这样的阀也燃料喷射系统的动态特性能显著改进和简化其结构。 该申请描述了一个简单而紧凑的内置电动液压切断装置,即使在高工作频率(F> 1千赫)功能可靠且切断倍tau的范围内允许<0.1毫秒。 该关闭装置包括作用在两个耦合的液压Hubtransformatoren具有相同传动比压电致动器(P)。 闭合装置的主要部件,是从致动器(P)驱动的压力活塞(DK)中,在圆筒形孔中的压力活塞的(ZY)(DK)轴向移动地安装起重活塞(HK)和腔室(KB),(在入口和出口通道 B2,G2,B3,G3)开放的abzusperrende中。 通过控制致动器(P)可以在柱塞孔(ZY)移动并关闭哑铃形提升活塞(HK)几乎瞬间的入口或出口通道(B2,B3)。 Absteuer-和截止阀,燃油喷射系统。