Ignition devices are tools or systems used to initiate combustion in engines or other machinery. They play a crucial role in starting vehicles, such as cars and motorcycles, by igniting the fuel-air mixture in the engine's cylinders. Common types of ignition devices include spark plugs and glow plugs, which create the necessary spark or heat to start the combustion process. In addition to automotive applications, ignition devices are also found in various industrial settings, such as gas burners and boilers. These devices ensure efficient and safe ignition of fuels, contributing to the overall performance and reliability of the equipment they are used in.