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The Camshaft position sensor also known as the crank position sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the ECU to control ignition and fuel injection. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor. Typically a Hall Effect sensor is used as the static part requiring a magnet to be mounted somewhere in the periphery of the rotating disc, but other detection principles can also be employed i.e. optical or inductive.
The functional objective for the camshaft position sensor is the task of sensing engine RPM in order to determine the position and rotational speed of the crank. Engine management systems use the information transmitted by the sensor to control things such as ignition timing and other important functions. The sensor can also relate other crucial data including the relation of the valves to the pistons. While there are several competing objectives in the fuel injection system it was primarily designed for controlling and improving:
The functional objective for the camshaft position sensor is the task of sensing engine RPM in order to determine the position and rotational speed of the crank. Engine management systems use the information transmitted by the sensor to control things such as ignition timing and other important functions. The sensor can also relate other crucial data including the relation of the valves to the pistons. While there are several competing objectives in the fuel injection system it was primarily designed for controlling and improving: