Method for driving in hydrogen purge valve failure

摘要

PURPOSE: An emergency driving method at malfunction of hydrogen purge valve is provided to secure the safety of vehicle in case hydrogen purge valve is broken down, because of securing hydrogen purging function even in emergency, and to facilitate the exhaustion of impurities and hydrogen. CONSTITUTION: An emergency driving method at malfunction of hydrogen purge valve comprises: a step of detecting the malfunction of a hydrogen purge valve; a step of converting to emergency operation mode In case the malfunction of the hydrogen purge valve is detected; and a step of switch-cotnrol water trap water discharge valve according to operation condition of hydrogen purge valve. At the emergency operation mode, hydrogen is discharged according to the opening of the water trap water discharge valve.