Sparktænding

Sparktænding is a Swedish term that translates to "spark ignition" in English. It refers to the process by which a fuel-air mixture is ignited within an internal combustion engine by an electrical spark. This is a fundamental principle in gasoline engines, also known as spark-ignition engines.

The process begins with the intake stroke, where a mixture of fuel and air is drawn into the engine cylinder. During the compression stroke, this mixture is compressed. As the piston reaches the top of its stroke, the spark plug emits a high-voltage electrical discharge, creating a spark. This spark ignites the compressed fuel-air mixture, causing a rapid expansion of gases. This expansion drives the piston downwards, generating power.

The timing of the spark is crucial for optimal engine performance and efficiency. It is typically controlled by the engine's control unit, which takes into account various factors such as engine speed, load, and temperature. Variations in sparktænding can lead to issues like misfires, reduced power, and increased fuel consumption. Modern engines utilize sophisticated electronic systems to precisely manage sparktænding for improved performance and emissions control. The concept of sparktænding is distinct from compression ignition, which is used in diesel engines.