전자제어를 적용한 냉각시스템이 연비에 미치는 영향에 관한 연구

Abstract

Recently, the internal combustion engines have focused on reducing the CO2 emissions in order to cope with severe regulations for greenhouse effect. Therefore, various new technologies have been developed in many countries. Among them, the cooling system is spotlighted because it has great effect on fuel efficiency. However, the present engine cooling system is almost same as one of the 50 years ago. The needs for high performance and compact size make it important to improve engine cooling system, down-sizing and control method of coolant flow. Thus, low fuel consumption technology such as control and synthetic management of cooling system was necessary to satisfy with these needs. In this study, we applied electric thermostat to improve the fuel economy. The fuel consumption of the electric thermostat was compared with conventional wax thermostat after driving FTP-75 mode. The experimental result revealed that the coolant temperature of opening the electric thermostat is higher.