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Invention Grant
CN101213364B 燃料供给装置中的电磁溢流阀的诊断装置 失效 - 权利终止

  • Patent Title: 燃料供给装置中的电磁溢流阀的诊断装置
  • Patent Title (English): Diagnosis device for electromagnetic relief valve in fuel delivery device
  • Application No.: CN200680024332.7
    Application Date: 2006-06-29
  • Publication No.: CN101213364B
    Publication Date: 2010-12-08
  • Inventor: 伏木俊介 , 铃木直人
  • Applicant: 丰田自动车株式会社
  • Applicant Address: 日本爱知县
  • Assignee: 丰田自动车株式会社
  • Current Assignee: 丰田自动车株式会社
  • Current Assignee Address: 日本爱知县
  • Agency: 北京市中咨律师事务所
  • Agent 段承恩; 陈海红
  • Priority: 204646/2005 2005.07.13 JP
  • International Application: PCT/JP2006/312991 2006.06.29
  • International Announcement: WO2007/007558 JA 2007.01.18
  • Date entered country: 2008-01-03
  • Main IPC: F02M55/02
  • IPC: F02M55/02
燃料供给装置中的电磁溢流阀的诊断装置
Abstract:
燃料供给装置(11)具有向内燃机(10)的燃料喷射阀(21)供给燃料的输送管(18)，电磁溢流阀(22)根据开阀指令从上述输送管(18)释放燃料从而降低该输送管(18)的燃料压力。上述溢流阀(22)的诊断装置，具有根据用于停止上述内燃机(10)的停止指令向上述溢流阀(22)输出上述开阀指令的电子控制装置(27)，该装置(27)根据上述停止指令输出后上述输送管(18)内的燃料压力的变化状态判定上述溢流阀(22)有无异常。结果，能够准确诊断电磁溢流阀(22)有无异常。
Abstract(English):

A fuel delivery device (11) has a delivery pipe (18) for delivering fuel to a fuel injection valve (21) of an internal combustion engine (10). An electromagnetic relief valve (22) relieves, according to a valve opening command, the fuel from the delivery pipe (18) to reduce fuel pressure in the delivery pipe (18). A diagnosis device of the relief valve (22) has an electronic control device (27) for outputting the valve opening command to the relief valve (22) according to a stop command for stopping the engine (10). Based on variation conditions of the fuel pressure in the delivery pipe (18) after the stop command is outputted, the electronic control device (27) determines whether or not the relief valve (22) has an abnormality. As a result, whether or not the electromagnetic relief valve(22) has an abnormality can be appropriately diagnosed.

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