PHEV 엔진 급속 웜업을 위한 배기열 회수 장치 성능평가에 대한 연구

Recently, the regulations on fuel economy, increasing gas mileage and decreasing CO₂ emission, have been tightened extremely. Many studies are performed to realize high-efficiency and high-fuel economy for engine by recovering waste energy. Due to improvement in fuel economy at low temperature, The exhaust heat recovery system(EHRS) has received attention. The exhaust heat recovery system(EHRS) is one of the waste heat recovery system. It reduces engine warming up time by elevating coolant temperature quickly by heat transfer between the coolant and exhaust gas. Therefore, it is possible that fuel economy is enhanced by the reduced the engine friction loss. This paper presents the performance evaluation of EHRS applied on a PHEV engine with respect to various operating conditions.