What is a cam positioning sensor?
Answers:
Background - please skip over the parts you know already
In your car, pistons go up and down driving the crankshaft, making it turn continuously. In order to control the distribution of fuel and air, valves are opened and closed above the pistons. The valves are operated using cams, which are egg-shaped things that rotate on a shaft (the surface of the "egg" pushes on the valve to open it - the valve closes because it's got a spring). That shaft (the one with the "eggs") is called the camshaft. It's very important to maintain the phase (the relative position) between the crankshaft and the camshaft, because if you don't you can get the valves opening too late, when the piston is at the top (i.e.the valves hit the top of the piston). This can destroy the engine.
The cam positioning sensor is a sensor that monitors the angular position of the camshaft (the amount the camshaft has turned) relative to the angular position of the crankshaft.
Sometimes cars are equipped with a mechanical device that allows the phase between the cams and the crank to be changed. The cam positioning sensor could also be monitoring this, but it is more likely used to make a decision on when to send the fuel into the cylinder, especially if you're talking about a diesel engine.
You have to be more specific.
If you are talking about a car with variable valve timing then I guess it would be the sensor that checks the position of the cam shaft.
If you are talking about a 3d plotter then it would be the sensor that detects the X,Y orZ position of the cutting head.
Hope this helps
Electronic gearing (or camming). The position of a slave axis is linearly linked to the position of a master axis. A good example of this would be in a system where 2 rotating drums turn at a given ration to each other. A more advanced case of electronic gearing is electronic camming. With E-camming, a slave axis follows a profile that is a function of the master position. This profile need not be linear, but it must be a function.
A cam position sensor is a sensor that tells the ecm (electronic control module) the exact position of the camshaft as it rotates. This information is critical in determining the timing of firing the fuel injectors as well as the ignition spark timing.
hear jarhed!
it is the sensor that tells the computer in your car were the position of the camshaft is
its a sensor fitted to the engine which monitors each revolution of the cam shaft and sends the information back to the electronic control unit
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