Effects of ethanol added fuel on exhaust emissions and combustion in a premixed charge compression ignition diesel engine

Yungjin Kim, Eiji Tomita, Kihyung Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The use of Diesel engines for vehicle has been increasing recently due to its higher thermal efficiency and lower CO2 emission level. However, in the case of Diesel engine, NOx increases in a high temperature combustion region and particulate matter is generated in a fuel rich region. Therefore, the technique of premixed charge compression ignition is often studied to get the peak combustion temperature down and to make a better air-fuel mixing. However it also has got a limited operating range and lower engine power produced by the wall wetting and the difficulty of the ignition timing control. In this research, the effect of injection strategies on the injected fuel behavior, combustion, and emission characteristics in a premixed charge compression ignition engine were investigated to find out the optimal conditions for fuel injection, and then ethanol blended diesel fuel was used to control the ignition timing. As a result, the combustion pressures and rate of heat release of the blended fuel became lower, however, indicated mean effective pressure showed fewer differences. Especially in the case of triple injection, smoke could be reduced a little and NOx emission decreased a lot by using the ethanol blended fuel simultaneously without much decreasing of indicated mean effective pressure compared to the result of 100% diesel fuel.

Original languageEnglish
Pages (from-to)1887-1896
Number of pages10
JournalThermal Science
Volume19
Issue number6
DOIs
Publication statusPublished - 2015

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Keywords

  • Diesel emission
  • Early injection
  • Ethanol
  • Indicated mean effective pressure
  • Premixed charge compression ignition

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

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