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Jeep Patriot Knock Sensor is one such unit that helps in listening to the engine knock and relaying the signals to the PCM which in turn trims the necessary timing. In most cases, piezoelectric, the sensor transforms mechanical energy in the form of vibration to electrical energy in order to track pressure spiking that characterizes knock. Through this feature of pulling and bumping achieving precise measurements, the sensor plays a central role in maintaining smooth engine performance and minimizing damages in the event that high octane fuel is used while the car's engine was designed for use with low octane fuels. Some of the sophisticated systems can control boost pressure, and even change the timings of some cylinders according to their condition to give optimized performance and durability at varying situations. Jeep Patriot Knock Sensor is a very important component that contributes to the efficiency of the car's engine and offers protection for against knock or unhealthy detonation.