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Leakage Diagnosis Complementary System 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 Complementary System 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：主动清洗泵对真空泵故障的泄漏诊断补充系统和主动清洗泵对真空泵故障的泄漏诊断补充系统
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摘要
The present invention relates to a method for supplementing leak diagnosis in the event of a vacuum pump failure using an active purge pump and a system for supplementing leak diagnosis in the event of a vacuum pump failure using an active purge pump, the failure of a vacuum pump mounted on the bantraline between the canister and the atmosphere Checking the step, operating the active purge pump mounted on the purge line connecting the canister and the intake pipe in reverse rotation, and determining whether the absolute value of the internal pressure of the fuel tank is less than a specific value, and the canister and the fuel. Checking the leak of the fuel system including the tank, and determining whether there is a leak, and even if the vacuum pump installed in the ELCM module fails, the active purge pump can rotate inside the ELCM module or canister, fuel tank Since it is possible to generate vacuum pressure, it is possible to perform a fuel system leak determination of a hybrid vehicle, supplementing the leak diagnosis method in the event of a vacuum pump failure using an active purge pump, and supplementing the leak diagnosis in case of a vacuum pump failure using an active purge pump Provide a system.
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