CAMSHAFT POSITION SENSOR
The camshaft position sensor monitors camshaft rotation, specifically targeting when the valves open and close. Most camshaft sensors are mounted just above a slotted ring on the camshaft. Most of these camshaft sensors will use a magnet to produce or vary an AC electronic signal that is used in conjunction with a crankshaft position sensor to determine when a position approaches top dead center (TDC) on the compression stroke. This information will help adjust the ignition timing and injector pulse.
Camshaft position sensor is also called cylinder identification sensor or phase detector.
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Crankshaft position sensor Function, types, Operation
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In consecutive fuel injection systems, the ECU must determine which cylinder will fire next. This information is provided by the cylinder identification sensor. During engine rotation, the sensor sends a signal to the onboard controller whenever the first cylinder is at top dead center (TDC).
Thus, the duration of the pulse injection is estimated. In simultaneous fuel injection systems, the onboard controller does not identify the cylinders and the firing order, as this is not necessary for the system to function. When a crankshaft or distributor ignition advance signal appears, the exact cylinder is detected by recognizing the mechanical positions of the crankshaft, camshaft, valves or distributor shaft.
camshaft position sensorCamshaft position sensor (CAM) functions:
