What's the camshaft phase shifter for?
Photoelectric type crankshaft and camshaft position sensor(1) structural featuresPhotoelectric type crankshaft and camshaft position sensor Nissan production is by the distributor and improvement, mainly by the signal disc (signal rotor), signal generator, distributor, sensor shell and harness plug etc..The signal panel is the signal rotor of the sensor and is mounted on the sensor shaft, as shown in figure 2-22. Two inner and outer light transmitting holes with evenly spaced radian are made near the edge of the signal disc. Wherein, the outer ring is made of 360 light transmitting holes (gaps), with an interval radian of 1. (pervious pores account for 0.5. Shading hole accounts for 0.5. ), is used to generate the crank angle and speed signal; the inner production has 6 light holes (rectangular alone L 60), interval radian. An upper TDC signal for each cylinder, in which a rectangular broadside is slightly longer and is used to produce the TDC signal of cylinder 1.The signal generator is fixed on the sensor housing, which is composed of a Ne signal (speed and corner signal) generator, G signal (TDC) generator and signal processing circuit. The Ne signal and the G signal generator are composed of a light emitting diode (LED) and a photosensitive transistor (or photodiode), with two LED facing two photosensitive transistors respectively.
The camshaft position sensor (Camshaft Position, Sensor, CPS) is also called cylinder identification sensor (Cylinder Identification, Sensor, CIS), in order to distinguish from the crankshaft position sensor (CPS), the camshaft position sensor is generally expressed in CIS. The function of the camshaft position sensor is to acquire the position signal of the camshaft, and input the ECU so that the ECU identifies the cylinder 1 to compress the TDC. Thus, sequential fuel injection control, ignition timing control and deflagration control are carried out. In addition, the camshaft position signal is also used to identify the first ignition time when the engine starts. Because the camshaft position sensor is able to identify which cylinder piston is about to reach the TDC, it is called the cylinder identification sensor.
Function and typeCrankshaft position sensor (Crankshaft Position, Sensor, CPS) also known as the engine speed and the crank angle sensor, its function is to collect the crankshaft rotation angle and the engine speed signal, and input the electronic control unit (ECu), in order to determine the ignition timing and injection timing.
