Research of CFR SI Engine and Dacia single cylinder SI engine equipped with LASER and Classical Spark Plug

Abstract

Latest investigation has shown that laser ignition offers many potential benefits compared to the classical spark plug ignition due to the improvement of the performance of internal combustion engines. This paper aims to show the progress made in recent research on laser ignited internal combustion engines and also discusses the advantages and control opportunities, while considering the challenges faced and the prospects for its future implementation. It has been demonstrated that laser ignition can be used to improve the control of the engine in areas such as improved combustion stability, reductions in emissions, lower idle speed and leaner operation. Moreover, laser ignition not only that is non-invasive, but it also has a great flexibility in terms of the ignition position. Therefore, it allows the possibility of multi-point ignition. On the other hand, spark plugs offer limited possibilities for optimising engine efficiency, as their fixed position within a cylinder and the protrusion of electrodes disturbs the cylinder geometry and can also quench the flame kernel. As a result, this paper explores several results of the recent research focusing on: indicated, mediated pressures and their wave dispersion.