What Does Engine Knock Mean?

[HarleyAnn]

Engine knock refers to an abnormal working condition of the engine, generally describing sudden and non-sustained vibrations in the engine cylinders caused by irregular ignition. Below is relevant information about engine knock: Principle of engine knock: When the engine inhales a mixture of fuel vapor and air, if the mixture ignites spontaneously before the compression stroke reaches the designed ignition point due to uncontrolled factors, the resulting powerful shockwave will oppose the piston's movement direction, causing engine vibrations. This phenomenon is known as engine knock. Hazards of engine knock: The main dangers of engine knock include reduced engine power, increased fuel consumption, amplified noise, diminished driving comfort, worsened emissions, and in severe cases, cylinder knocking, engine stalling, and mechanical component damage, which can lead to significant financial losses for vehicle owners.