Abstract
AbstractEnvironmental pollution and depleting fossil fuel reserve is a matter of apprehension throughout the world. biodiesel is a potential renewable fuel which can be used as a replacement to diesel. Many researchers have found that the emission of nitrogen oxide (NOx) from biodiesel fuelled vehicle is more than that of conventional diesel fuelled vehicle. This NOx emission from the motor vehicles can be suitably reduced within the permissible limits using exhaust gas recirculation (EGR) technique. The current article is a review of biodiesel fuelled compression ignition (CI) engine with and without the use of EGR. It particularly emphasizes upon the performance, emission, and combustion characteristics. It reveals that use of biodiesel with exhaust gas recirculation reduced carbon monoxide (CO), hydrocarbon (HC), soot emission, and also NOx emission from CI engine. The brake thermal efficiency (BTE) is increased, and brake specific fuel consumption (BSFC) decreased slightly with exhaust gas recirculation implementation. In addition, the exhaust gas temperature is found to reduce significantly with EGR use.KeywordsVegetable oilBrake specific fuel consumptionBrake thermal efficiencyExhaust gas recirculationEmissions
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