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    • 4. 发明专利
    • Braking pressure control valve device
    • 制动压力控制阀装置
    • JP2005289350A
    • 2005-10-20
    • JP2004303538
    • 2004-09-17
    • Wabco Gmbh & Co Ohgヴアブコ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング・ウント・コンパニー・オツフエネハンデルスゲゼルシヤフトWABCO GmbH & Co.OHG
    • BREHMER DIETERFUHRMANN INGOHAEMPKE UWEKLAGGE HANS-CHRISTIAN
    • B60T15/02B60T15/20
    • B60T15/203B60T15/027
    • PROBLEM TO BE SOLVED: To reduce a size of a retaining control piston of a trailer control valve controlled by two circuits for a tractor (EBS tractor) having an electronically controlled braking system and braked by air pressure.
      SOLUTION: In the EBS tractor, electrically generated EBS control pressure and redundant control pressure generated at failure of an electronic device are fed to two circuits of the trailer control valve at braking. The retaining control piston is provided on the trailer control valve and force is acted on the retaining control piston through two control chambers applied with the control pressure. In EBS operation, the EBS control pressure is effective by retaining of the redundant control pressure and the redundant control pressure becomes effective at failure of the electronic device. Thereby, the control chamber applied with the redundant control pressure is constituted as combination of two partial chambers and these partial chambers are acted on the retaining control piston through two respective partial action surface. In the EBS operation, only force generated on the first partial action surface is acted.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:减小由具有电控制动系统并由空气压力制动的拖拉机(EBS牵引车)的两个回路控制的拖车控制阀的保持控制活塞的尺寸。 解决方案:在EBS拖拉机中,电子设备故障时产生的电气EBS控制压力和冗余控制压力在制动时被馈送到拖车控制阀的两个回路。 保持控制活塞设置在拖车控制阀上,力通过施加控制压力的两个控制室作用在保持控制活塞上。 在EBS操作中,通过保持冗余控制压力,EBS控制压力有效,并且冗余控制压力在电子设备故障时变得有效。 因此,施加有冗余控制压力的控制室被构成为两个部分室的组合,并且这些部分室通过两个相应的部分作用表面作用在保持控制活塞上。 在EBS操作中,仅在第一部分动作表面上产生的力被起作用。 版权所有(C)2006,JPO&NCIPI