Analysis of Spark Plug Gap on Flame Development using Schlieren Technique and Image Processing

International Engineering Research and Innovation Symposium

Shu-Yi, Paul Hii^1 ; Khalid, Amir^1 ; Mohamad, Anuar^1 ; Manshoor, Bukhari^1 ; Sapit, Azwan^1 ; Zaman, Izzuddin^1 ; Hashim, Akasha^1

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

关键词: Air-gaps;    Flame characteristics;    Flame development;    Gasoline engines;    Injection pressures;    Optical visualization;    Schlieren photography;    Schlieren techniques;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/160/1/012044/pdf
DOI  :  10.1088/1757-899X/160/1/012044

来源: IOP

【 摘 要 】

Gasoline spark ignition system in cars remains one of the main consumption of fuel in the world nowadays. During combustion process, spark plug is one important key features in a gasoline engine. The incompatibility of spark plug gap width and the fuel used causing backfire and knocking in the combustion engine. Thus, the spark plug gap was studied with focussing in controlling the combustion process to improve the performance of the engine. The main purpose of this research is to investigate the effect of spark plug air gap on flame development. The parameters studied in this research include spark plug air gap width (1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm and 1.8 mm), injection pressure (0.3 MPa, 0.4 MPa, 0.5 MPa and 0.6 MPa) and flame characteristics such as flame front area and the flame intensity. The flame front area of different spark plug gap and injection pressure were investigated through Schlieren photography method. The Schlieren images taken were analysed with the time changes. The experiment results proved that the increase of spark plug gap width will led to better flame development in shorter time while increased the chance of misfire.