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标题：Experimental Investigations on Exhaust Emissions of Low Grade Heat Rejection Diesel Engine with Crude Rice Bran Oil with Varied Engine Parameters
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作者：N. Durga Prasada Rao ; M.V.S. Murali Krishna ; B. Anjaneya Prasad 等
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：5
页码：6832
DOI：10.15680/IJIRSET.2016.0505031
出版社：S&S Publications
摘要：In the scenario of depletion of fossil fuels, the search for alternative fuels has become inevitable.Vegetable oils and alcoholsare important substitutes for diesel fuels. The drawbacks associated with crude vegetableoils (high viscosity and low volatility) and alcohol (low energy content and cetane number) gave rise to combustionproblems in diesel engines. However, high viscous vegetable oil call for low heat rejection (LHR) or semi adiabaticdiesel engine. Investigations were carried out to study exhaust emissions of a low grade LHR diesel engine consisted ofceramic coated cylinder head with different operating conditions [normal temperature and pre-heated temperature]ofcrude rice bran vegetable oil with varied injection timing and injector opening pressure. Comparative studies onexhaust emissions were made with diesel working on similar conditions.Particulate emissions decreased, while NOxlevels increased with LHR engine with crude vegetable oil in comparison with CE with vegetable oil. Exhaustemissions improved with increase of injector opening pressure,advanced injection timing and preheating of crudevegetable oil.
关键词：Alternative fuels; exhaust emissions; vegetable oils