Effects of Pilot Injection Timing and EGR on Combustion, Performance and Exhaust Emissions in a Common Rail Diesel Engine Fueled with a Canola Oil Biodiesel-Diesel Blend

Jun Cong Ge, Min Soo Kim, Sam Ki Yoon and Nag Jung Choi
Additional contact information
Jun Cong Ge: Division of Mechanical Design Engineering, Chonbuk National University, 567 Baekje-daero, Jeonjusi, Jeollabuk-do 561-756, Korea
Min Soo Kim: Division of Mechanical Design Engineering, Chonbuk National University, 567 Baekje-daero, Jeonjusi, Jeollabuk-do 561-756, Korea
Sam Ki Yoon: Technical Education Center, GM Korea Company, 72 Saengmuol-ro, Gunsansi, Jeollabuk-do 573-882, Korea
Nag Jung Choi: Division of Mechanical Design Engineering, Chonbuk National University, 567 Baekje-daero, Jeonjusi, Jeollabuk-do 561-756, Korea

Energies, 2015, vol. 8, issue 7, 1-14

Abstract: Biodiesel as a clean energy source could reduce environmental pollution compared to fossil fuel, so it is becoming increasingly important. In this study, we investigated the effects of different pilot injection timings from before top dead center (BTDC) and exhaust gas recirculation (EGR) on combustion, engine performance, and exhaust emission characteristics in a common rail diesel engine fueled with canola oil biodiesel-diesel (BD) blend. The pilot injection timing and EGR rate were changed at an engine speed of 2000 rpm fueled with BD20 (20 vol % canola oil and 80 vol % diesel fuel blend). As the injection timing advanced, the combustion pressure, brake specific fuel consumption (BSFC), and peak combustion pressure (P max ) changed slightly. Carbon monoxide (CO) and particulate matter (PM) emissions clearly decreased at BTDC 20° compared with BTDC 5°, but nitrogen oxide (NO x ) emissions increased slightly. With an increasing EGR rate, the combustion pressure and indicated mean effective pressure (IMEP) decreased slightly at BTDC 20° compared to other injection timings. However, the P max showed a remarkable decrease. The BSFC and PM emissions increased slightly, but the NO x emission decreased considerably.

Keywords: canola oil biodiesel blends; pilot injection timing; exhaust gas recirculation; combustion characteristics; exhaust emissions (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (15)

Downloads: (external link)
https://www.mdpi.com/1996-1073/8/7/7312/pdf (application/pdf)
https://www.mdpi.com/1996-1073/8/7/7312/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:8:y:2015:i:7:p:7312-7325:d:52856

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().