Evaluation of ethanol and isopropanol as additives with diesel fuel in a CRDI diesel engine


ALPTEKİN E.

FUEL, cilt.205, ss.161-172, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 205
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1016/j.fuel.2017.05.076
  • Dergi Adı: FUEL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.161-172
  • Anahtar Kelimeler: Diesel engine, Ethanol, Isopropanol, Injection timing, Combustion, Emission, EMISSION CHARACTERISTICS, EXHAUST EMISSIONS, N-BUTANOL, PERFORMANCE, BIODIESEL, COMBUSTION, BLENDS, SOLUBILITY, PRESSURE, ALCOHOL
  • Kocaeli Üniversitesi Adresli: Evet

Özet

In this study, alcohol fuels such as ethanol and isopropanol were used as additives with diesel fuel and two blends (15% ethanol-85% diesel fuel, and 15% isopropanol-85% diesel fuel) were prepared. Detailed and comparative performance, combustion, injection, and emission analysis of these blends and pure diesel fuel were performed in a common rail direct injection (CRDI) diesel engine. The test engine was operated under three engine speeds (1500, 2000 and 2500 rpm) and four engine loads (BMEP: 3.3, 5.0, 6.6 and 8.3 Bar) test conditions. According to the experimental results, alcohol fuel blends with diesel fuel caused higher brake specific fuel consumption (BSFC) values. Maximum cylinder pressure (MCP) values of the fuel blends were slightly higher than those of pure diesel fuel on average. The pilot and main injection characteristics of the CRDI fuel system showed different trends with respect to the engine load and speed. Outcomes of emission tests revealed that the CRDI diesel engine fueled with alcohol-diesel fuel blends emitted higher THC, CO and NO. emissions compared to neat diesel fuel. Alcohol fuel blends did not significantly affect CO2 emissions. Ethanol-diesel and isopropanol-diesel fuel blends had similar combustion and emission results to each other. (C) 2017 Elsevier Ltd. All rights reserved.