직렬형 플러그인 하이브리드 전기 버스의 엔진 구동 전략에 따른시뮬레이션 기반 연비 분석

Because of high oil prices and emission gas problems, many governments tighten regulation of fueleconomy and emission gas. For Passenger car, there are many researches for plug-in hybrid electric vehicles and theyare being manufactured. On the other hand, there are few researches for plug-in hybrid electric bus that is heavycommercial vehicle. In this study, analysis of fuel economy for series plug-in hybrid electric bus according to engineoperation strategy based on simulation is conducted. Forward simulator is developed using Autonomie. Engineoperation strategies consist on constant engine operation strategy and engine on/off operation strategy. Considering theengine operation strategy, results of vehicle speed, engine operating points and fuel economy are obtained andanalyzed. As a result, engine on/off operation strategy has more advantage than constant engine operation strategy interms of fuel economy.