Influence of Biodiesel Inlet Temperature on the Performance of a Small DI Diesel Engine

American Journal of Science and Technology

Mohamed Mourad¹  Abdullah Bin-Mahfouz²  Khaled Mahmoud³ 

[1] Mechanical Engineering Department, University of Jeddah, Jeddah, Saudi Arabia.;Chemical Engineering Department, University of Jeddah, Jeddah, Saudi Arabia.;Mechanical Engineering Department, Minia University, Minia, Egypt;Mechanical Engineering Department, Minia University, Minia, Egypt.

关键词: Biodiesel;    Inlet Diesel Temperature;    Engine Performance;    Diesel Emissions;    Fuel Viscosity;   

DOI  :  

学科分类：工程和技术（综合）

来源: AASCIT

【 摘 要 】

Because of the expanding interest to the depletion of petroleum fuel assets and ecological issues, biodiesel turned out to be increasingly alluring in the last decades. Biodiesel is an alternative fuel comparable to ordinary or petrodiesel. Biodiesel can be created from vegetable oil, creature oil/fats, fat and used cooking oil. Biodiesel has numerous naturally useful properties. The most advantage of biodiesel is that it can be depicted as ‘low carbon emission fuel’. Beside that biodiesel encompasses a higher flash point than petrodiesel and so is more secure within the occasion of a crash. In this paper, an experimental study has been conducted on a small DI diesel to compare between the performance of the engine performance using petrodiesel and biodiesel fuels. An AC electric generator is used as an engine load. The effect of engine load and fuel inlet temperature on the brake thermal efficiency as well as brake specific fuel consumption on the brake thermal efficiency as well as brake specific consumption are experimentally investigated. The results indicate that no obvious changes in brake thermal efficiency of both biodiesel and petrodiesel fuels at low engine load while, the brake thermal efficiency of biodiesel is slightly higher than petrodiesel at high engine load. However, the higher the engine load, the higher the brake thermal efficiency and the lower brake specific consumption. This effect was slightly evident in petrodiesel than biodiesel. The increase in the inlet fuel temperature leads to reduction in fuel viscosity especially in biodiesel fuel. As a result of an increase in the biodiesel temperature from 25°C to 70°C, the kinematic viscosity decreases by about 0.57%. Also, there is a reduction in the petrodiesel kinematic viscosity with the increase in temperature. As the fuel temperature increases from 25°C to 70°C, the petrodiesel kinematic viscosity decreases by about 54%. And as a result, there is an improvement in brake thermal efficiency especially with the biodiesel fuel.

【 授权许可】

Unknown