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Research and Development of a Hydrogen-Fueled Engine for Hybrid Electric Vehicles
Technical Paper
2000-01-0993
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2000 World Congress
Language:
English
Abstract
Hybrid electric vehicle with internal combustion engine fueled with hydrogen can be a competitor to the fuel cell electric vehicle that is thought to be the ultimately clean and efficient vehicle. The objective in this research is to pursue higher thermal efficiency and lower exhaust emissions in a hydrogen-fueled engine for the series type hybrid vehicle system. Influences of compression ratio, surface / volume ratio of combustion chamber, and boost pressure on thermal efficiency and exhaust emissions were analyzed.
Results showed that reduction of the surface / volume ratio by increased cylinder bore was effective to improve indicated thermal efficiency, and it was possible to achieve 44% of indicated thermal efficiency. However, brake thermal efficiency resulted in 35.5%. It is considered that an improved mechanical efficiency by an optimized engine design could increase the brake thermal efficiency largely. In hydrogen-fueled engine, the highest thermal efficiency was obtained in lean mixture condition with excess air ratio around 2.5. NOx emission in the condition was less than 10ppm.
It was cleared that high thermal efficiency and low NOx exhaust emission can be achieved simultaneously in a hydrogen-fueled engine operated in conditions for series type hybrid electric vehicles.
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Citation
Nakajima, Y., Yamane, K., Shudo, T., Hiruma, M. et al., "Research and Development of a Hydrogen-Fueled Engine for Hybrid Electric Vehicles," SAE Technical Paper 2000-01-0993, 2000, https://doi.org/10.4271/2000-01-0993.Also In
References
- Nakajima, Y. et al. “Evaluation of a Lean Burn Hydrogen Fueled Engine for Hybrid Electric Vehicles” Proceedings of the 12th World Hydrogen Energy Conference 1998
- Iguchi, T. et al. “Study of Hydrogen Engine for a Hybrid Vehicle” Proceedings of the SAE of Japan 1998 Fall Congress 1998
- Nakajima, Y. et al. “Research and Development of a Hydrogen Fueled Engine for Hybrid Electric Vehicles” Proceedings of the SAE of Japan 1999 Spring Congress 1999