What is the meaning of knocking?

[DiReid]

Knocking is an abnormal combustion phenomenon. When the pressure and temperature in the engine increase, atomized gasoline explodes before being ignited, causing severe vibration in the engine. This phenomenon is called knocking. Detailed explanations are as follows: 1. Manifestations of knocking: There are various irregular metal knocking sounds inside the engine, such as clanging, banging, or rattling noises, which may cause engine shaking and body vibration. The sound becomes louder when the throttle is fully open in high gear or when climbing a slope. 2. Hazards of knocking: It can lead to worsened emissions, reduced engine power, increased noise, higher fuel consumption, and decreased vehicle comfort. In severe cases, it may cause cylinder knocking, engine stalling, and damage to mechanical components of the engine.