This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Study on Maximizing Exergy in Automotive Engines
Technical Paper
2007-01-0257
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The use of waste heat for automobile engine that applied Rankine cycle from the viewpoint of exergy (available energy) was researched. In order to recover heat to high quality energy, a heat-management engine whose exhaust port was replaced with an innovative evaporation device was developed. With this engine, high temperature and high pressure steam (400 degree C, 8MPa) could be generated from a large amount of the exhaust loss. In addition, high temperature water (189 degree C) was obtained from cooling loss. Consequently, the system that recovered more exergy from waste heat was established.
To verify the system, the Rankine cycle system was installed in a hybrid vehicle and the automatic control system to change steam temperature and pressure according to the load variation was constructed. As the result of vehicle testing, thermal efficiency was increased from 28.9% to 32.7% (by 13.2% increase) at 100km/h constant vehicle speed. In this paper, it is concluded that Rankine cycle using waste heat was very effective to maximize exergy in automotive engine.
Recommended Content
Technical Paper | Heat Recovery and Bottoming Cycles for SI and CI Engines - A Perspective |
Technical Paper | Compounding the Truck Diesel Engine with an Organic Rankine-Cycle System |
Technical Paper | Combined Cycle for Hybrid Vehicles |
Authors
Citation
Endo, T., Kawajiri, S., Kojima, Y., Takahashi, K. et al., "Study on Maximizing Exergy in Automotive Engines," SAE Technical Paper 2007-01-0257, 2007, https://doi.org/10.4271/2007-01-0257.Also In
New SI Engine and Component Design and Engine Lubrication and Bearing Systems
Number: SP-2093; Published: 2007-04-16
Number: SP-2093; Published: 2007-04-16
References
- Tanishita, I. Kougaku Zyouki Shokabo Publishing Co., Ltd. 17 20 1984
- Direct Energy Conversion, Japan Science Foundation Tokyo Denki University Press 256 257 1987
- Oshida, I. Kodansha Ltd. 225 1988
- Yoshida, K. 16 26 1999
- Imabeppu, S. Simonosono, H. Yamamoto, S. Analysis of Convective Heat Transfer in the Exhaust System of Gasoline Engines 1996JSAE Annual Congress Proceedings 966 89 92 1996
- Katagiri, H. Yokoi, Y. Kurazono, K. Abe, S. Heat flow simulation for cylinder head of 4-valve gasoline engine Journal of Society of Automotive Engineers of Japan 48 4 17 19 1994