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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Document Type: Research Article
Department of Mechanical Engineering, MRK Institute of Technology, Chidambaram, India
Department of Mechanical Engineering, Pondicherry Engineering College, Pondicherry, India
Department of Mechanical Engineering, Annamalai University, Chidambaram, India
August 3, 2014