发明名称 |
Leakage diagnosis apparatus for fuel vapor purge system and method thereof |
摘要 |
In a fuel vapor purge system, an occurrence of leakage in a diagnosis zone is diagnosed, based on data indicating a pressure rise characteristic in the diagnosis zone for when the diagnosis zone is pressurized, and data indicating a pressure drop characteristic in the diagnosis zone after the pressurization of the diagnosis zone is stopped.
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申请公布号 |
US2004250604(A1) |
申请公布日期 |
2004.12.16 |
申请号 |
US20040865849 |
申请日期 |
2004.06.14 |
申请人 |
HITACHI UNISIA AUTOMOTIVE, LTD. |
发明人 |
WATANABE SATORU;HOSOYA HAJIME |
分类号 |
G01M3/26;F02M25/08;(IPC1-7):G01M3/04 |
主分类号 |
G01M3/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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