The crankshaft position sensor classification have? What are the crankshaft position sensor fault phenomenon

by:DEFUS     2020-06-23
The crankshaft position sensor is usually installed on the crankshaft front-end ( Pulley) Among back-end near the big flywheels or crankshaft crankshaft, early models also have installed inside a distributor, is one of the most important sensor in the control system. Its functions are: detection of engine speed, therefore is also called speed sensor; Detection of piston top dead center position, therefore, also known as check point on sensors, including detection is used to control the ignition of each cylinder top dead center signal, is used to control the order the first cylinder top dead center signal injection. The next and everybody about the crankshaft position sensor classification have? The crankshaft position sensor fault phenomenon have? The classification of the crankshaft position sensor what 1, magnetoelectric induction: magnetoelectric induction speed sensor and crankshaft position sensor is divided into upper and lower two layers of installation within the distributor. By permanent magnetic induction sensor detecting coil and rotor ( Timing of rotor and rotor speed) Of the rotor with distributor shaft rotation. Timing has one, two or four rotor teeth, and other forms, rotating speed of rotor of 24 teeth. Permanent magnetic induction test coil is fixed on the distributor body. If known to the crankshaft position sensor and speed sensor signals, and the work order of each cylinder, then know that each cylinder crankshaft position. Magnetoelectric induction speed sensor and crankshaft position sensor signals of rotor disk can also be installed on the crankshaft or the camshaft. 2, hall effect: hall effect speed sensors and crankshaft position sensor is a kind of signal generator using the hall effect. Hall signal generator installed inside a distributor, and distributor rotor coaxial, encapsulates the hall chip and permanent magnet is made on the distributor plate as a whole. Trigger on the impeller gap number is the same as the number of engine cylinders. When the trigger on the impeller blades into between permanent magnet and hall element, be blade bypass hall trigger field, then do not produce the hall voltage, sensor without output signal; When the trigger on the impeller gap between part into a permanent magnet and hall element, magnetic field lines into the hall element, hall voltage increases, the sensor output voltage signal. 3, photoelectric: photoelectric crankshaft position sensor generally installed within the distributor, the signal generator and the signal with light hole plate. Dish with distributor shaft rotation, the signal plate outer ring 360 lithography aperture, produce 1 ° crank Angle signal; While there were 60 ° between uniform of six light hole, produce crankshaft Angle 120 ° of signals, one hole wide light, used to produce cylinder top dead center signal relative to 1. Signal generator is installed on the distributor shell by two light-emitting diodes (leds), two of photodiode and circuit. Light emitting diode is opposite the photosensitive diode. Signal plate between the light emitting diode and photodiode, because the signal plate with light holes, pervious to light and shading are produced by alternating change phenomenon. When the beam of the light emitting diode according to the photodiode, photosensitive diode voltage; When the leds light beam is blocked, photosensitive diode voltage is 0. The voltage signal after circuit part plastic amplification, namely the crankshaft Angle to the electronic control unit for 1 ° and 120 ° of the signal, the electronic control unit based on the signal calculation engine speed and the crankshaft position. 1 what are the crankshaft position sensor fault phenomenon. Trouble light lit. 2. Engine can rely on the camshaft position sensor continue to work, but the starting time may be longer, and cruise and exhaust braking system cannot work normally. There will be the engine jitter, white smoke, but there is no obvious change, dynamic performance throttle response is normal. More about 'the crankshaft position sensor classification have? Crankshaft position sensor fault phenomenon, what are the 'complete content, hope useful for everyone.
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