Invention Grant
US08365763B2 Pilot-controlled pressure limiting valve 失效
先导控制限压阀

  • Patent Title: Pilot-controlled pressure limiting valve
  • Patent Title (中): 先导控制限压阀
  • Application No.: US12278661
    Application Date: 2007-01-27
  • Publication No.: US08365763B2
    Publication Date: 2013-02-05
  • Inventor: Hans Woelfges
  • Applicant: Hans Woelfges
  • Applicant Address: DE Stuttgart
  • Assignee: Robert Bosch GmbH
  • Current Assignee: Robert Bosch GmbH
  • Current Assignee Address: DE Stuttgart
  • Agent Michael J. Striker
  • Priority: DE102006007363 20060217
  • International Application: PCT/EP2007/000714 WO 20070127
  • International Announcement: WO2007/093273 WO 20070823
  • Main IPC: F16K31/383
  • IPC: F16K31/383
Pilot-controlled pressure limiting valve
Abstract:
A pressure limiting valve has a control element (10) which can be acted on in an opening direction, against a first control face, by a pressure which is to be limited, and which can be acted on in a closing direction by a spring (16) and, against a second control face, by a control pressure prevailing in a control pressure space (14). The pressure prevailing in the control pressure space can be limited by means of a pilot control valve (21). A control fluid can be supplied to the control pressure space through the control element via a control fluid nozzle (48). Upstream of the first control face, a plate (38) is held on the control element. Formed between the plate and the first control face is a gap with a predefined gap dimension. Said gap is situated upstream of the control fluid nozzle.
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