Method f0r Improving Engine Start Performance using Hardware Wake-Up Period and Vehicle thereof

摘要

The vehicle of the present invention is characterized in that the engine startability improvement is achieved by the controller 1 in the key-off state of the engine in a vehicle state detection mode in which the battery voltage, engine oil temperature, engine coolant temperature is applied, soaking time A wake-up fuel pressure control mode in which a wake-up set time is determined to be reached at an 80-minute count of a key-off timer for a key-off timer pressure fuel pump 220 for a period of about 1 second, a wake-up mode for repeating the driving frequency of the low-pressure fuel pump 220 for a maximum of six times, ) Hardware Wake-Up Cycle Control System Implemented in Repeated Control Mode By implementing improved engine startability, it is possible to improve the fuel efficiency of the liquid fuel caused by sudden pressure drop of the remaining fuel in the fuel system 200 during key-off after high load operation If meteoric fuel conversion is prevented Is eliminated even more constrained due to extra hardware, in particular by applying a battery SOC (State Of Charge) in the drive condition of the low-pressure fuel pump 220 has a feature that prevents a functional stop due to battery discharge.