Abstract
Performance and emission characteristics of diesel engine were reviewed in this work. This study was conducted by revising works that were conceded out using biodiesel prepared from the raw oils of: palm, moringa, Jatropha and diesel fuel. In this review study we consider only 20% of each biodiesel (described as MB 20 , PB 20 , and JB 20 ) was tested in diesel engine, given that open literature indicates the possible use of biodiesel of up to 20% in a diesel engine without any engine modification. All biodiesel fuel samples reduce brake power (BP) and increase brake specific fuel consumption (BSFC) than diesel. Diesel engine emission results indicated that blended fuel reduces the average carbon monoxide (CO) and hydrocarbons (HC) emissions except nitric oxides (NO x ) emissions than diesel fuel. B 20 blend of biodiesel is a suitable source for alternative fuel, with ecological welfares. Among the biodiesel blended fuel, Palm biodiesel showed better performance and minimum emission than jatropha and moringa biodiesel fuel. Although PB 20 showed better performance, but performance of MB 20 biodiesel blend is comparable with other fuels. Correspondingly, MB 20 can be used in a diesel engine without any engine modification.
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