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Leakage diagnosis supplement method for failure of vacuum pump using active purge pump and leakage diagnosis supplement system for failure of vacuum pump using active purge pump
Leakage diagnosis supplement method for failure of vacuum pump using active purge pump and leakage diagnosis supplement system for failure of vacuum pump using active purge pump
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机译：使用主动吹扫泵和泄漏诊断补充系统对真空泵失效的泄漏诊断补充方法，采用主动净化泵失效
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摘要
A leakage diagnosis supplement method for a failure of a vacuum pump using an active purge pump may include: determining whether or not the vacuum pump mounted on a vent line between a canister and an atmosphere fails; reverse-rotating the active purge pump mounted on a purge line connecting the canister and an intake pipe to each other; determining whether or not an absolute value of internal pressure in a fuel tank is less than a specific value; and checking a leakage in the fuel system including the canister and the fuel tank.
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