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how speedometer sensor works
How the vehicle speed sensor works: Vehicle speed sensor:
The output signal of the vehicle speed sensor can be a magnetoelectric AC signal, a Hall digital signal or a photoelectric digital signal. The vehicle speed sensor is generally installed in the drive axle housing or the gearbox housing, and the signal line of the vehicle speed sensor is generally installed in the shielding sheath. This is to eliminate electromagnetic and radio frequency interference generated by high-voltage live wires, car phones or other electronic equipment, so that electronic communication will not be interrupted. To avoid drivability deterioration or other problems, magnetoelectric and photoelectric sensors are two of the most widely used vehicle speed sensors in automobiles. Magnetoelectric sensors are widely used in various automobiles in Europe, North America and Asia to adjust vehicle speed (VSS), crank angle (CKP) and camshaft angle (CMP), and can also be used to sense speed and Position signal, such as compressor clutch, etc.
How the vehicle speed sensor works: How it works
The output signal of the vehicle speed sensor can be a magnetoelectric AC signal, a Hall digital signal or a photoelectric digital signal. The vehicle speed sensor is generally installed in the drive axle housing or gearbox housing, and displays the driving speed of the vehicle by swinging the pointer or causing an AC signal. It generally consists of a magnetic core and a coil with two ends. These two coil terminals are the terminals for the sensor output, which is converted into a current amplitude representing the vehicle speed.
How the Vehicle Speed Sensor Works: Features
The speed sensor detects the speed of the electronically controlled vehicle, and the adjustment computer uses this input signal to adjust the idle speed of the engine, lock the torque converter of the automatic transmission, shift the gear of the automatic transmission, turn on and off the engine cooling fan, cruise and other functions.For the location of the speed sensor, it is generally installed inside the driver housing or gearbox housing, while the power cord of the sensor is installed inside the intercepting jacket. It is worth mentioning that there is a certain attention paid to the gap between the wheel speed sensor and the gear ring. All normal indicators of the front tire are 1.10-1.97mm, while those of the wheel are 0.42-0.80mm. If the gap is too large, it will also endanger the collection of wheel speed sensors and the accuracy of information.
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