KNOCK SENSOR (KS) CONSTRUCTION/OPERATION [AJ (3.0L Duratec)]
BUE014018920N04
• Installed on the cylinder block right bank wall (exhaust manifold side).
• Converts vibration from engine knocking in the engine to voltage using the piezoelectric effect of the semiconductor and inputs it to the PCM.
• The piezoelectric effect is a phenomenon in which a difference in electric potential is produced on the surface of a piezoelectric element by the application of tensile load or pressure from a certain direction. Tensile load and pressure applied to the KS originates from engine vibration caused by abnormal combustion in the engine. The difference in electrical potential, which results from the strain on the sensor element caused by vibration, is sent to the PCM as a knocking signal.