| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel gas purge system having a diagnostic function for increase the frequency of abnormality detection and preventing degradation in driveability or emission. SOLUTION: In this fuel gas purge system, an integrated purge amount is cleared when an abnormality detection is interrupted, a next-time abnormality determination condition is satisfied when the integrated purge amount is not less than a predetermined value less than that of the last time, and purge of a canister is performed for a time shorter than required when the abnormality detection is interrupted, before the abnormality detection is performed again. COPYRIGHT: (C)2005,JPO&NCIPI
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