Effect of High Injection Pressure of Algae and Jatropha Derived Biodiesel on Ignition Delay and Combustion Process

International Engineering Research and Innovation Symposium

Rahman, Nurdin^1 ; Khalid, Amir^1 ; Manshoor, Bukhari^1 ; Jaat, Norrizam^1 ; Zaman, Izzuddin^1 ; Sunar, Norshuhaila^2

Combustion Research Group (CRG), Centre for Energy and Industrial Environment Studies (CEIES), Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), Malaysia^1

Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia (UTHM, Malaysia^2

关键词: Combustion pro-cess;    Constant volume chamber;    Emission characteristics;    High injection pressures;    Ignition delays;    Injection pressures;    Rapid compression machine;    Shorter ignition delay;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/160/1/012040/pdf
DOI  :  10.1088/1757-899X/160/1/012040

来源: IOP

【 摘 要 】

This paper presents the investigation of the effect of high injection pressure on the ignition delay period and emission characteristics. Few experiments were conducted in a rapid compression machine (RCM). Four types of fuels were tested inside a RCM which are standard diesel (SD), Algae biodiesel (A2), Palm Oil biodiesel (B5, B10, and B15) and Jatropha biodiesel (J5, J10, J15). The experiments were conducted at high injection pressure of 130 MPa. The ambient temperature of constant volume chamber at the time of fuel injection was set at 850 K. The results indicate that the combined factors of specific of ambient temperature and higher injection pressure produces shorter ignition delay time. B5 has the shortest ignition delay with 1.5 ms. Biodiesel has the shorter ignition delay which is prolonged with increasing biodiesel content in the blends. In terms of emissions, Carbon dioxide (CO2), Carbon monoxide (CO), hydrocarbon (HC) and smoke emissions decreased with all biodiesel-diesel blends. However, oxides of nitrogen (NOx) emission of the biodiesel was relatively higher than those of the diesel under all test conditions. In addition, the increase of blends in terms of biodiesel ratio was found to be significant in enhancing the combustion process.