Performance and emission of generator Diesel engine using methyl esters of palm oil and diesel blends at different compression ratio

7th International Conference on Advanced Concepts in Mechanical Engineering

Aldhaidhawi, M.^1,2 ; Chiriac, R.^1 ; Bdescu, V.^1 ; Pop, H.^1 ; Apostol, V.^1 ; Dobrovicescu, A.^1 ; Prisecaru, M.^1 ; Alfaryjat, A.A.^1 ; Ghilvacs, M.^1 ; Alexandru, A.^1

Applied Thermodynamics, Engines, Thermal and Refrigerant Equipment Department, University POLITEHNICA of Bucharest, Faculty of Mechanical Engineering and Mechatronics, 313 Splaiul Independentei, Bucharest

060042, Romania^1

Ministry of Higher Education and Scientific Research, Al-Furat Al-Awsat Technical University, Najaf, Iraq^2

关键词: Bio-diesel blends;    Brake specific fuel consumption;    Brake thermal efficiency;    Direct injection engines;    Palm oil methyl esters;    Performance and emissions;    Specific fuel consumption;    Variable compression ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/147/1/012135/pdf
DOI  :  10.1088/1757-899X/147/1/012135

来源: IOP

【 摘 要 】

This study proposes engine model to predicate the performance and exhaust gas emissions of a single cylinder four stroke direct injection engine which was fuelled with diesel and palm oil methyl ester of B7 (blends 7% palm oil methyl ester with 93% diesel by volume) and B10. The experiment was conducted at constant engine speed of 3000 rpm and different engine loads operations with compression ratios of 18:1, 20:1 and 22:1. The influence of the compression ratio and fuel typeson specific fuel consumption and brake thermal efficiency has been investigated and presented. The optimum compression ratio which yields better performance has been identified. The result from the present work confirms that biodiesel resulting from palm oil methyl ester could represent a superior alternative to diesel fuel when the engine operates with variable compression ratios. The blends, when used as fuel, result in a reduction of the brake specific fuel consumption and brake thermal efficiency, while NOx emissions was increased when the engine is operated with biodiesel blends.