The purpose of the BMW X5 Knock Sensor is to protect the engine by detecting the occurrence of damaging spark knock and allowing the control computer to shift ignition timing before damage occurs. Mounted on the block, the Knock Sensor contains a piezoelectric element that converts the vibration from detonation into voltage, which is sampled in a constant feedback loop by the powertrain module. When knock does occur, timing is reduced in small increments. Combustion becomes stable, then timing slowly creeps forward again in a way that keeps the engine just about to the point of maximum power, economy, and low emissions, all advantages that every X5 driver can feel. Earlier BMW X5 models applied a single Knock Sensor monitoring the entire bank as opposed to multiple units that give the computer the opportunity to more finely tune different cylinders to provide quicker correction and smoother operation. Regardless of which generation, each BMW Knock Sensor works with information from crank and cam sensors to provide precise sparks without the delays of mechanical distributors. By preventing prolonged detonation, the level of protection the Knock Sensor affords helps the BMW X5 continue to perform strongly, even with lower octane fuel, as well as protecting the internals inside the engine.
If you are looking for OEM BMW X5 Knock Sensor, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW X5 Knock Sensor that come backed by the manufacturer's warranty.