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Performance, Combustion, and Emission Characteristics of a Low Heat Loss Diesel Engine Operated on Eucalyptus Oil and Diesel Fuel Blends

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The aim of this study is to apply low heat rejection to an engine to improve engine performance using Eucalyptus oil and diesel fuel blend as a fuel. For this purpose a direct injection diesel engine was converted into a low heat rejection engine, and its performance, emission, and combustion characteristics were investigated experimentally. The experiment has been carried out on two phases. In the first phase, the blends of Eucalyptus oil and diesel fuel were injected at various loads in a direct injection four stroke TV1 Kirloskar make diesel engine. In the second phase, instead of using a single-property yttria stabilized zirconia coating to achieve the thermal barrier for the piston crown, cylinder head, and valves, a functionally graded material having a variety of properties and a layer of aluminum oxide coating was used. Thus, a thermal barrier was produced for the elements of the combustion chamber. From the results, it is observed that there will be a significant decrease in specific fuel consumption and an increase in brake thermal efficiency. Also, there is a significant reduction in carbon monoxide, oxides of nitrogen except unburned hydrocarbon emission, and smoke density for all test fuels used in the coated engine as compared to the uncoated engine.
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Keywords: Eucalyptus; bio fuel; diesel engine; thermal barrier; zirconia

Document Type: Research Article

Affiliations: 1: Department of Mechanical Engineering, MRK Institute of Technology, Chidambaram, India 2: Department of Mechanical Engineering, Pondicherry Engineering College, Pondicherry, India 3: Department of Mechanical Engineering, Annamalai University, Chidambaram, India

Publication date: August 3, 2014

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