| Remark： | A speed sensor is made up of a toothed metal disk that is basically mounted onto the crankshaft and a stationary detector that functions to cover a magnetic coil through which the current passes through. Now as these metal teeth begins moving past the coil, the magnetic field is likewise distracted. Hence, a wave of pulses in the current is created. The computer readily calculates the speed at which the engine is traveling through by means of the numbers of the crankshaft’s rotation. These rotations determine the frequency of the pulses as created from the engine speed sensor.
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