Innovative developments in the field of intensification of fuel-air mixtures ignition

The article discusses the intensification of fuel-air mixtures ignition in internal combustion engines with positive ignition. The conditions of operation of the spark plug in the combustion chamber and directions of improving fuel-air mixtures ignition process organization were considered. It was noted that nowadays spark ignition is used widely and it performs one of the basic functions in internal combustion engine, but reserves for its improving are almost exhausted. In this context, a promising direction in the field of intensification of lean mixtures combustion in the engine through the use of laser ignition system is considered. The article describes the design of the laser adapter plug installed in the spark plug hole of engine cylinder head. It is shown that the intensification of combustion of lean mixtures in the internal combustion engine through the use of laser ignition system significantly improves the process of primary focus ignition, which contributes to the rapid development of the ignition and subsequent combustion process. And engine with positive ignition performance characteristics significantly improves. The advantage of laser ignition is the ability to focus the beam on a small area in the center of combustion chamber to ensure optimal combustion conditions. It was noted that during ignition firstly the maximum temperature is reached and then it drops. It is shown that during the spark ignition it largely determines the speed of ignition and combustion, but when laser ignition is used it has practically no influence on the ignition and subsequent combustion of the mixture. There are also other advantages of the laser ignition in relation to the traditional ignition, the most important are: the possibility of reducing the requirements for octane level and ensuring stability and reliability of the engine when operating on poor mixtures.

internal combustion engine, ignition process, fuel-air mixture, laser adapter plugs, combustion source formation