szikragyújtású

Szikragyújtású is a Hungarian term that translates to "spark-ignited" or "spark ignition" in English. It refers to a type of internal combustion engine that utilizes a spark plug to initiate the combustion process. This is in contrast to compression-ignition engines, such as diesel engines, which rely on the heat generated by compression to ignite the fuel.

In a spark-ignited engine, a mixture of fuel and air is drawn into the cylinder. This mixture is then compressed by the piston. As the piston reaches the top of its stroke, the spark plug emits a high-voltage electrical spark, which ignites the compressed fuel-air mixture. The resulting explosion drives the piston down, generating power. This cycle repeats continuously to produce mechanical energy.

Spark-ignited engines are commonly found in gasoline-powered automobiles, motorcycles, lawnmowers, and many other smaller engines. They are known for their ability to produce high power output relative to their size and weight, and for their relatively smooth operation. The precise timing of the spark is crucial for efficient combustion and optimal engine performance. Variations in spark timing can affect power, fuel economy, and emissions.