Effect of Static Spark Timing on the Performance and Emissions of a Spark Ignition Engine Using CNG

2nd International Conference on Sustainable Engineering Techniques

工业技术（总论）

El-Sharkawy, Mohamed R.^1^2 ; Abaskharon, Mina B. R.^1 ; Abd-El-Tawwab, Ali M.^1 ; Ezzat, Fawzy M. H.^1

Minia University, Faculty of Engineering, Automotive and Tractors Eng. Dept, Minia, Egypt^1

Al-Amara College University, Engineering of Technical Mechanical Power Department, Maysan, Iraq^2

关键词: Brake power;    Brake thermal efficiency;    Coolant temperature;    Engine performance;    Load condition;    Performance and emissions;    Spark timing;    Volumetric efficiency;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/518/3/032062/pdf
DOI  :  10.1088/1757-899X/518/3/032062

学科分类：工业工程学

来源: IOP

【 摘 要 】

In this paper, studying the effects of static spark time on the performance and emissions of a spark ignition engine using compressed natural gas. Engine performance and emissions were measured repeatedly at different static ignition time (15° BTDC, 18° BTDC, 21° BTDC and 24° BTDC) with fixed coolant temperature (90°C± 2°C). the results showed that advancing the static ignition time with CNG from 15° BTDC to 24° BTDC at the full load increased the brake power, brake torque, brake thermal efficiency and hydrocarbon by 4.07%, 4.67%, 3.58% and 4.89% respectively, while carbon monoxide and volumetric efficiency doesn't change effectively at the full and half load conditions.