Dual fuel auto cut system in vehicle

摘要

PURPOSE: A double-automatic fuel shutoff apparatus of a vehicle is provided to completely prevent a fire of the vehicle and explosion of a fuel tank by intercepting fuel leakage of a fuel system and cooling the fuel tank, in a vehicle collision. CONSTITUTION: A double-automatic fuel shutoff apparatus of a vehicle comprises a fuel shutoff unit(10) and a fuel cooling unit(20). The fuel shutoff unit comprises an air bag ECU(Electronic Control Unit,11) receiving a signal of a sensor for sensing the collision degree of the vehicle and deciding expansion of an air bag; an ETACS(Electronic Time & Alarm Control System,12) receiving the air bag expansion signal from the air bag ECU and deciding fuel shutoff; and an operating member(13) receiving a full auto cut signal produced from the ETACS and shutting off the fuel of the fuel supply system. The fuel cooling unit comprises a controller(21) receiving signals of temperature rise sensors(25) installed to the ETACS and the vehicle and controlling a control valve(23) to supply a cooling material to the fuel tank.