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Comparative performance and emission studies when using olive oil as a fuel supplement in DI and IDI diesel engines

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  • Rakopoulos, C.D.

Abstract

An experimental study is conducted to evaluate and compare the use of a diesel fuel supplement, specifically a 25/75% and a 50/50% blend of waste olive oil and commercial diesel fuel, in a four-stroke, DI (Direct Injection) diesel engine and in a four-stroke, IDI (Indirect Injection) diesel engine having a swirl-combustion chamber. The influence of the blends (diesel fuel+olive oil), for a large range of loads, has been examined on fuel consumption, maximum pressure, exhaust temperature, exhaust smokiness and exhaust-gas emissions such as nitrogen oxides (NOx), hydrocarbons (HC) and carbon monoxide (CO). The differences in the measured performance and exhaust-emission parameters, from the baseline operation of either engine, are determined and compared. The study shows, for both the DI and IDI engines, a small penalty in specific fuel consumption, a moderate increase in exhaust smokiness and essentially unaltered maximum pressures and exhaust temperatures when using the blends. Also, for both the IDI and DI engines when using the blends, the study shows moderate decreases in emitted nitrogen oxides and increases in hydrocarbons as well as negligible increases in emitted carbon monoxide. Theoretical aspects of diesel engine combustion are used to aid the interpretation of the observed engines' behaviour.

Suggested Citation

  • Rakopoulos, C.D., 1992. "Comparative performance and emission studies when using olive oil as a fuel supplement in DI and IDI diesel engines," Renewable Energy, Elsevier, vol. 2(3), pages 327-331.
    • Handle: RePEc:eee:renene:v:2:y:1992:i:3:p:327-331
    DOI: 10.1016/0960-1481(92)90045-5
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    References listed on IDEAS

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    1. Kouremenos, D.A. & Rakopoulos, C.D. & Kotsiopoulos, P., 1990. "Comparative performance and emission studies for vaporized diesel fuel and gasoline as supplements in swirl-chamber diesel engines," Energy, Elsevier, vol. 15(12), pages 1153-1160.
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    Cited by:

    1. Rakopoulos, C.D. & Kosmadakis, G.M. & Pariotis, E.G., 2009. "Evaluation of a new computational fluid dynamics model for internal combustion engines using hydrogen under motoring conditions," Energy, Elsevier, vol. 34(12), pages 2158-2166.
    2. Gürü, Metin & Koca, Atilla & Can, Özer & Çınar, Can & Şahin, Fatih, 2010. "Biodiesel production from waste chicken fat based sources and evaluation with Mg based additive in a diesel engine," Renewable Energy, Elsevier, vol. 35(3), pages 637-643.
    3. Shahid, Ejaz M. & Jamal, Younis, 2011. "Production of biodiesel: A technical review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(9), pages 4732-4745.
    4. Rakopoulos, C.D. & Antonopoulos, K.A. & Rakopoulos, D.C., 2007. "Experimental heat release analysis and emissions of a HSDI diesel engine fueled with ethanol–diesel fuel blends," Energy, Elsevier, vol. 32(10), pages 1791-1808.
    5. Giakoumis, Evangelos G., 2018. "Analysis of 22 vegetable oils’ physico-chemical properties and fatty acid composition on a statistical basis, and correlation with the degree of unsaturation," Renewable Energy, Elsevier, vol. 126(C), pages 403-419.

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