Proceedings ArticleDOI
Effects of Cetane Number and Distillation Characteristics of Paraffinic Diesel Fuels on PM Emission from a DI Diesel Engine
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In this article, the effects of cetane number and distillation characteristics on engine-out PM emissions from a conventional direct injection diesel engine were investigated by using paraffinic fuels which were made to simulate FTD fuel.Abstract:
Fischer-Tropsch Diesel (FTD) fuel is expected to be a promising clean diesel fuel in the future because of its characteristics of zero sulfur, zero aromatics and a high cetane number. However, the optimum fuel properties for diesel engines have not been realized. In this study, the effects of cetane number and distillation characteristics on engine-out PM emissions from a conventional direct injection diesel engine were investigated by using paraffinic fuels which were made to simulate FTD fuel. From the results of the vehicle exhaust emissions test and engine dynamometer test, it was found that the narrow distillation characteristics (which eliminates heavy hydrocarbon fraction) could reduce the soluble organic fraction (SOF) in PM emissions, and the excess high cetane number characteristic promoted the formation of insoluble organic fraction (ISOF). It is considered that shorter ignition delay due to the excessively high cetane number results in poor mixing of injected fuel and air in the combustion chamber. Future diesel engines are expected to lower the compression ratio and to require the fuels with high cetane number. However, in the case of conventional diesel, the results showed that moderate high cetane number and narrow distillation properties eliminating the heavy hydrocarbon fraction were desirable as the optimum FTD fuel.read more
Citations
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Journal ArticleDOI
Combustion characteristics and emissions of Fischer–Tropsch diesel fuels in IC engines
TL;DR: In this article, a condensed overview of Gas-to-Liquids (GTL), Bi-LTL, and BTL theory and technology by the use of Fischer-Tropsch (F-T) processes is presented.
Journal ArticleDOI
Effect of two-stage injection on combustion and emissions under high EGR rate on a diesel engine by fueling blends of diesel/gasoline, diesel/n-butanol, diesel/gasoline/n-butanol and pure diesel
TL;DR: In this paper, the effect of two-stage injection on combustion and emission characteristics under high EGR (46%) condition were experimentally investigated, and the results showed that blending gasoline or/and n-butanol in diesel improves smoke emissions while induces increase in maximum pressure rise rate (MPRR).
Journal ArticleDOI
Liquid length and vapor penetration of conventional, Fischer–Tropsch, coal-derived, and surrogate fuel sprays at high-temperature and high-pressure ambient conditions
Sanghoon Kook,Lyle M. Pickett +1 more
TL;DR: In this paper, the authors investigated the effect of fuel density and boiling point on liquid length and vapor penetration in a constant-volume chamber of a diesel engine with Mie-scattering and schlieren.
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Tailor-Made Fuels from Biomass for Homogeneous Low-Temperature Diesel Combustion
Andreas Janssen,Florian Kremer,Jan H. Baron,Martin Muether,Stefan Pischinger,Juergen Klankermayer +5 more
TL;DR: In this article, a literature survey is carried out, focusing on the impact of the cetane number, boiling characteristics, and aromatic and oxygen contents on the diesel combustion process, and a model-based analysis of desired fuel properties was conducted, using a large database with 32 different f...
References
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Proceedings ArticleDOI
Simultaneous PM and NOx Reduction System for Diesel Engines
Koichiro Nakatani,Shinya Hirota,Shinichi Takeshima,Kazuhiro Itoh,Toshiaki Tanaka,Kazuhiko Dohmae +5 more
Proceedings ArticleDOI
Effect of Hydrocarbon Molecular Structure on Diesel Exhaust Emissions Part 1: Comparison of Combustion and Exhaust Emission Characteristics among Representative Diesel Fuels
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