Knock Sensor: for the Right Air and Fuel Mixture

by : Anthony Fontanelle

What happens under the hood when a knocking sound is heard? Such noise is heard when the engine does not burn fuel properly during the internal combustion process. An unwanted occurrence like this can be prevented if the engine system is supplemented by a knock sensor. This component, which aids the engine to carry out its power production task properly, is among the several special auto parts classified as sensors.

As part of the engine control unit, a knock sensor is installed right on the engine assembly. In this strategic position, this tiny auto part gets to monitor closely the sound as well as the vibration coming from inside the engine block. A knocking sound in the engine is usually a result of an untimely burning of fuel. In some cases, such noise is also a result of an engine's very high temperature. If this inefficiency continues without any mechanism detecting, the engine would be damaged. Because of the presence of a knock sensor, these unwanted instances are prevented. Once this sensor detects any sound or vibration, it immediately relays the assessment to the fuel injector. Through this, the mixture, which is a combination of fuel and air, can be adjusted to fit the needs of the engine. The right mixture improves the generation of more horsepower, enhances fuel economy, and lessens the noxious emissions of the vehicle. Thus, money is spent well and trips to the gas stations are lessened.

Small as it may be, an efficient works full time. As long as the engine is running, this sensor does its job of monitoring for any sign of inefficient fuel combustion. Although it works most of the time, it does not wear out that easily. Keeping a reliable knock sensor in the engine compartment is really essential for a hassle-free engine operation.