Title:
マルチプロテクションバルブ
Document Type and Number:
Japanese Patent JP5302504
Kind Code:
B2
Abstract:
An object of the present invention is to allow a vehicle to run in the case where an air compressor connected to an input port fails so as to cause air leakage from the location of the failure, by preventing air in a parking brake circuit from leaking from the failure location through a bleed air flow path. In order to achieve the object, a multi-protection valve includes: a communication passage for communicating between an input chamber and a service output port so as to bypass a pressure control valve provided in correspondence with the service output port, the communication passage having a check valve for preventing air from flowing from the service output port into the input chamber and a throttle for restricting the air flow rate; and a bleed air flow path for communicating between the input chamber and the parking output port so as to bypass pressure control valves, the bleed air flow path having a second check valve for preventing air from flowing from the input chamber to the parking output port. The multi-protection valve further includes a third check valve provided between the input chamber and an input port to prevent air from flowing from the input chamber to the input port.
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Inventors:
Ichiro Minato
Kenji Hattori
Fumiaki Uno
Hiroshi Ozawa
Kenji Hattori
Fumiaki Uno
Hiroshi Ozawa
Application Number:
JP2006325414A
Publication Date:
October 02, 2013
Filing Date:
December 01, 2006
Export Citation:
Assignee:
Nabtesco Co., Ltd.
Isuzu Motors Limited
Isuzu Motors Limited
International Classes:
B60T15/36
Domestic Patent References:
| JP2006168393A | ||||
| JP2001219844A |
Foreign References:
| EP0976636A1 |
Attorney, Agent or Firm:
Hiroki Ishii