NDLI: Numerical and Experimental Investigation on Combustion and Emission Characteristics of DME Fuel in a Compression Ignition Engine

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ryu, Bong Woo Youn, In Mo Roh, Hyun Gu Park, Sung Wook Lee, Chang Sik
Copyright Year	2009
Abstract	The characteristics of spray behavior and combustion of DME (dimethyl ether) were investigated using experimental and numerical approaches. For experiments, injection rates and macroscopic spray characteristics were investigated at various injection parameters by using an injection rate system and a spray visualization system. The combustion and emission characteristics were also obtained from the modified engine for DME fuel and emission measurement equipment. For numerical approaches, the combustion characteristics of DME fueled engine were predicted by a 3D-CFD code, the KIVA code coupled with the CHEMKIN (KIVA-CHEMKN) and spray behavior and evaporation were calculated by considering the thermo-chemical properties of DME. In order to calculate the fuel oxidation and emission formation such as NOx, a detailed chemical kinetic mechanism which was composed of 83 species and 360 reaction paths was considered. To simulate soot emission, two-step phenomenological model was applied. Both experimental and numerical results indicate that injection delay, ignition delay, and combustion duration of DME are shorter than that of diesel because of good evaporation and mixing characteristics. The pressure history predicted by the KIVA code agrees well with the measurements from the test engine. The amount of NOx emission was predicted by the reduced NOx mechanism shows good agreements to the experiments.
Sponsorship	Internal Combustion Engine Division
Starting Page	421
Ending Page	431
Page Count	11
File Format	PDF
ISBN	9780791843635
DOI	10.1115/ICEF2009-14078
e-ISBN	9780791838587
Conference Proceedings	ASME 2009 Internal Combustion Engine Division Fall Technical Conference
Language	English
Publisher Date	2009-09-27
Publisher Place	Lucerne, Switzerland
Access Restriction	Subscribed
Subject Keyword	Visualization Computational fluid dynamics Soot Sprays Combustion Ethers (class of compounds) Evaporation Fuels Pressure Engines Emissions Diesel engines Nitrogen oxides Diesel Oxidation Delays Ignition delay
Content Type	Text
Resource Type	Article

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