초대형 트럭 배기열 회수 시스템 개발에 관한 연구

Waste heat recovery (WHR) has been recognized as a promising technology to achieve the fuel economy and greenhouse gas reduction goals for future heavy-duty (HD) truck diesel engines. A Rankine cycle system with ethanol as the working fluid was developed with HMC & VOITH, to investigate the fuel economy benefit from recovering waste heat from a 12.7L HD truck diesel engine. Thermodynamic analysis on this WHR system demonstrated that 6.5% fuel saving could be achievable. Finally, test bench measurements of the applied engine coupled with a heat recovery device are carried out. It can be demonstrated that waste heat recovery can produce an additional power output of about 3.2~4.5% at partial load and 1.2 ~ 2.8% at full load condition. Also as a result of vehicle testing, fuel economy can be achieved to increase 3.3% at chassisdynamometer mode test.