Which component helps to prevent the engine from knocking?

The knock sensor plays a crucial role in preventing engine knocking, which can cause damage and reduce performance. Knocking occurs when the air-fuel mixture in the engine's cylinders ignites at the wrong time, leading to vibrations and potential engine damage. The knock sensor detects these vibrations or knocking sounds and sends a signal to the engine control unit (ECU). In response, the ECU can adjust the ignition timing or fuel mixture to avoid knocking, thereby protecting the engine and maintaining optimal performance.

In contrast, the ignition coil is primarily responsible for providing the spark necessary to ignite the air-fuel mixture, while the fuel injector delivers the correct amount of fuel into the engine. The oil pump, on the other hand, circulates engine oil to lubricate moving parts but does not influence the timing of combustion. Thus, it is the knock sensor that specifically targets the detection of knocks and enables corrective action to mitigate this issue.