A Comparative Study of Cycle Variability of Laser Plug Ignition vs Classical Spark Plug Ignition in Combustion Engines

CAR2017 International Congress of Automotive and Transport Engineering - Mobility Engineering and Environment

工业技术;运输工程

Done, Bogdan^1

Renault Technologie Roumanie, University Politehnica of Bucharest, Department of Thermotechnics, Engines, Thermal Equipment and Refrigeration Installations, Bucharest, Romania^1

关键词: Automotive applications;    Coefficient of variability;    Comparative studies;    Cycle variability;    Cyclic variabilities;    Gas and fuel-air mixtures;    Indicated mean effective pressure;    Laboratory experiments;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/252/1/012078/pdf
DOI  :  10.1088/1757-899X/252/1/012078

学科分类：工业工程学

来源: IOP

【 摘 要 】

Over the past 30 years numerous studies and laboratory experiments have researched the use of laser energy to ignite gas and fuel-air mixtures. The actual implementation of this laser application has still to be fully achieved in a commercial automotive application. Laser Plug Ignition as a replacement for Spark Plug Ignition in the internal combustion engines of automotive vehicles, offers several potential benefits such as extending lean burn capability, reducing the cyclic variability between combustion cycles and decreasing the total amount of ignition costs, and implicitly weight and energy requirements. The paper presents preliminary results of cycle variability study carried on a SI Engine equipped with laser Plug Ignition system. Versus classic ignition system, the use of the laser Plug Ignition system assures the reduction of the combustion process variability, reflected in the lower values of the coefficient of variability evaluated for indicated mean effective pressure, maximum pressure, maximum pressure angle and maximum pressure rise rate. The laser plug ignition system was mounted on an experimental spark ignition engine and tested at the regime of 90% load and 2800 rev/min, at dosage of λ=1.1. Compared to conventional spark plug, laser ignition assures the efficiency at lean dosage.