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Effects of Fuel and Oxidation Catalyst on Exhaust Emissions for Heavy Duty Diesel Engines and Diesel Passenger Cars
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English
Abstract
Effects of fuel properties, in terms of the 90% boiling point (T90) and the polycyclic aromatic hydrocarbon (PAH) content, as well as oxidation catalysts on diesel exhaust emissions have been examined using three direct injection (DI) diesel engines and two diesel passenger cars equipped with oxidation catalysts.
The diesel emission tests using two series of test fuels, one for examining the effects of the T90 and another for polycyclic aromatic hydrocarbons, have indicated that total hydrocarbons (THC) and particulate matter (PM) decrease as the T90 is reduced. PM and THC were also found to be on a declining trend with a decreasing content of polycyclic aromatic hydrocarbons. The extent of these effects of fuel properties on exhaust emissions varied with engine and car models, and appeared to be smaller in engines or cars having lower exhaust emissions.
Tests using three catalyst-mounted diesel engines conducted to determine the effect of oxidation catalysts on the exhaust emissions have shown significant reductions both in THC and PM. The declining trends for THC and PM have also been observed in tests using the two passenger cars with oxidation catalysts.
The above mentioned findings have suggested that the contribution of oxidation catalysts in reducing THC and PM is evidently much larger than that of fuel properties such as reduction of the T90 or polycyclic aromatic hydrocarbons.
Authors
- Mitsuo Tamanouchi - Advanced Technology and Research Institute, Petroleum Energy Center
- Hiroki Morihisa - Advanced Technology and Research Institute, Petroleum Energy Center
- Hiroshi Araki - Advanced Technology and Research Institute, Petroleum Energy Center
- Shigehisa Yamada - Advanced Technology and Research Institute, Petroleum Energy Center
Topic
Citation
Tamanouchi, M., Morihisa, H., Araki, H., and Yamada, S., "Effects of Fuel and Oxidation Catalyst on Exhaust Emissions for Heavy Duty Diesel Engines and Diesel Passenger Cars," SAE Technical Paper 980530, 1998, https://doi.org/10.4271/980530.Also In
References
- Shimokawa, K. et al. “The Influence of Diesel Fuel Composition on Engine Performance and Exhaust Emission” JSAE Symposium No.9401 1995
- Kobayashi, S. “Effect of Fuel Properties on Diesel Exhaust Emissions” Journal of the Society of Automotive Engineers of Japan 49 5 1995
- Takei, Y. et al. “Effects of Diesel Fuel Properties on Exhaust Emissions from ID Diesel Engine” 1995 JSAE Autumn Convention Proceedings No.956 1995
- Shintani, M. et al. “Effect of Fuel Properties on Diesel Exhaust Emissions” JSME Symposium No.95-73 1995
- Fujimoto, Y. et al “Effects of Diesel Fuel Properties on Particulate Emissions from DI Diesel Engine” 1994 JSAE Autumn Convention Proceedings No.946 1994
- Tamanouchi, M. et al. “Effects of Fuel Properties on Exhaust Emissions for Diesel Engines With and Without Oxidation Catalyst and High Pressure Injection” SAE Paper 970758 1997