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Performance evaluation of medium grade low heat rejection diesel engine with carbureted methanol and crude jatropha oil

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  • Murali Krishna M, V.S.
  • Seshagiri Rao V, V.R.
  • T, Kishen Kumar Reddy
  • Murthy P, V.K.

Abstract

Vegetable oils and alcohols (ethanol and methanol) are important substitutes for diesel fuel as they are renewable in nature. However drawbacks associated with vegetable oils (high viscosity and low volatility) and alcohols (low cetane number) call for engine with hot combustion chamber with its significant characteristics of higher operating temperature, maximum heat release, higher brake thermal efficiency (BTE) and ability to handle the lower calorific value fuel. Methanol was inducted into the engine through a variable jet carburetor, installed at the inlet manifold of the engine at different percentages of crude vegetable oil at full load operation on mass basis. Crude vegetable oil was injected at near end of compression stroke. Performance was evaluated with engine with LHR combustion chamber consisting of air gap (3mm) insulated piston with superni (an alloy of nickel) crown and air gap insulated liner with superni insert with mixture of carbureted methanol and crude vegetable oil with varied injector opening pressure and injection timing. Comparative studies were made with crude vegetable oil operation on engine with LHR combustion chamber at similar operating conditions. Performance parameters and exhaust emissions were determined at various values of brake mean effective pressure. Aldehydes were measured by the 2,4, dinitrophenyl hydrazine (DNPH) method. Combustion characteristics were measured with top dead center (TDC) encoder, pressure transducer, console and special pressure–crank angle software package at full load operation of the engine.

Suggested Citation

  • Murali Krishna M, V.S. & Seshagiri Rao V, V.R. & T, Kishen Kumar Reddy & Murthy P, V.K., 2014. "Performance evaluation of medium grade low heat rejection diesel engine with carbureted methanol and crude jatropha oil," Renewable and Sustainable Energy Reviews, Elsevier, vol. 34(C), pages 122-135.
    • Handle: RePEc:eee:rensus:v:34:y:2014:i:c:p:122-135
    DOI: 10.1016/j.rser.2014.02.013
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    References listed on IDEAS

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    1. Giakoumis, Evangelos G. & Rakopoulos, Constantine D. & Dimaratos, Athanasios M. & Rakopoulos, Dimitrios C., 2013. "Exhaust emissions with ethanol or n-butanol diesel fuel blends during transient operation: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 17(C), pages 170-190.
    2. Misra, R.D. & Murthy, M.S., 2010. "Straight vegetable oils usage in a compression ignition engine--A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(9), pages 3005-3013, December.
    3. Kumar, Satish & Cho, Jae Hyun & Park, Jaedeuk & Moon, Il, 2013. "Advances in diesel–alcohol blends and their effects on the performance and emissions of diesel engines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 22(C), pages 46-72.
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    Cited by:

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    2. Tainaka, Kazuki & Fan, Yong & Hashimoto, Nozomu & Nishida, Hiroyuki, 2019. "Effects of blending crude Jatropha oil and heavy fuel oil on the soot behavior of a steam atomizing burner," Renewable Energy, Elsevier, vol. 136(C), pages 358-364.
    3. Krishna, M.V.S. Murali & Prakash, T. Ohm & Ushasri, P. & Janardhan, N. & Murthy, P.V.K., 2016. "Experimental investigations on direct injection diesel engine with ceramic coated combustion chamber with carbureted alcohols and crude jatropha oil," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 606-628.
    4. Moniruzzaman, M. & Yaakob, Zahira & Khatun, Rahima, 2016. "Biotechnology for Jatropha improvement: A worthy exploration," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1262-1277.

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