The Experimental Investigation of the Performance and Emissions Characteristics of Direct Injection Diesel Engine by Bio-Hydro Fined Diesel Oil and Diesel Oil in Different EGR 2019-32-0595

Bio-hydro fined diesel (BHD) oil is known as a second generation oil made from bio hydro finning process. Biodiesel in the first generation is made from transesterification process and it has several disadvantages such as high density and increased the viscosity that can cause operational problems because can make some deposits in the engine. To overcome this, the second generation process of biodiesel has been modified from the first generation oil. BHD is made from the waste cooking oil by using the hydro finning process without the trans-esterification process. The results of BHD oil has nearly the same with diesel oil. BHD oil has low viscosity and high oxidation stability. Therefore, BHD oil can be used in the diesel engine without making any modifications in the engine.

In this study, the comparison of performance and emissions characteristics from BHD oil, waste cooking oil, and diesel oil are investigated. The experimental conditions are varied for loads (low load and partial load) and exhaust gas circulations (EGR) are zero, 10, and 20%. The engine speed was constant at 2000 rpm. The results show that the BHD oil can be an alternative fuel to replace the diesel oil because the emissions can be reduced from diesel oil, therefore it is friendly to the environment.