发明授权
US06755077B2 Diagnostic system for identifying fuel injector failure in a fuel cell system
有权
用于识别燃料电池系统中的燃料喷射器故障的诊断系统
- 专利标题： Diagnostic system for identifying fuel injector failure in a fuel cell system
- 专利标题（中）： 用于识别燃料电池系统中的燃料喷射器故障的诊断系统
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申请号： US10164293申请日： 2002-06-06
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公开(公告)号： US06755077B2公开(公告)日： 2004-06-29
- 发明人: Bruce J. Clingerman , Donald H. Keskula , Julie A. Stuart
- 申请人： Bruce J. Clingerman , Donald H. Keskula , Julie A. Stuart
- 主分类号： G01M1500
- IPC分类号： G01M1500
摘要：
A diagnostic system and method identifies fuel injector failure in a fuel cell system including a fuel processor and a fuel source. A fuel injector supplies fuel from the fuel source to the fuel processor. A pressure sensor generates a pressure signal based on pressure between the fuel source and the fuel injector. A fuel injector diagnostic identifies fuel injector failure based on the pressure signal. The fuel injector diagnostic includes a moving window tracker that tracks the pressure signal over a moving window. The fuel injector diagnostic further includes a standard deviation or variance calculator that generates a standard deviation or variance based on the pressure signal in the moving window.