This page explains how Wheel Speed Sensor is classified within Motor Vehicle Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A Wheel Speed Sensor measures the rotational speed of a vehicle's wheel and sends this data to the ABS/ESC control unit for traction and stability control.
Technical details and manufacturing context for Wheel Speed Sensor
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Output Signal Type | Hall effect or Variable reluctance | Hall effect provides digital output; VR provides analog AC signal. |
| Operating Voltage | 4.5–24 V | Typical supply voltage range for Hall sensors. |
| Output Current (max) | 20 mA | Maximum output current for Hall sensor. |
| Air Gap | 0.3–1.5 mm | Distance between sensor tip and tone ring; critical for signal strength. |
| Frequency Range | 0–2500 Hz | Corresponds to wheel speed up to ~250 km/h depending on tone ring teeth. |
| Operating Temperature Range | -40 to +150 °C | Standard automotive temperature range.ISO 16750-2 |
| Ingress Protection Rating | IP67–IP69K | Resistance to water and dust.IEC 60529 |
| Connector Type | 2-pin or 3-pin | Depends on sensor type; 2-pin for VR, 3-pin for Hall. |
| Cable Length | 0.5–2.0 m | Customizable per vehicle harness. |
| Mounting Type | Flange or bolt-on | Flange with M6 or M8 bolt. |
| Output Signal Duty Cycle | 50 ± 10 % | For Hall sensors, square wave duty cycle. |
| Rise/Fall Time | ≤ 1.5 µs | For Hall sensors, output switching speed. |
| Vibration Resistance | 20 g | Maximum acceleration for vibration testing.ISO 16750-3 |
| ESD Tolerance | ±2 kV | Electrostatic discharge withstand voltage.ISO 10605 |
| Coil Resistance (for VR) | 600–1200 Ω | Typical resistance range for variable reluctance sensors. |
| Inductance (for VR) | 100–500 mH | Typical inductance range for VR sensors. |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
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The two main types are Hall effect, which provides a digital square wave output, and variable reluctance, which provides an analog AC signal. The choice depends on the vehicle's ECU requirements.
For Hall effect sensors, the typical supply voltage range is 4.5 to 24 V. Variable reluctance sensors do not require a supply voltage as they generate their own signal.
The air gap is the distance between the sensor tip and the tone ring, typically 0.3 to 1.5 mm. It is critical for signal strength; if too large, the signal may be weak or lost.
Relevant standards include ISO 16750-2 for environmental conditions, ISO 11452 for electromagnetic compatibility, SAE J1455 for environmental practices, and GB/T 28046 for road vehicles. Always verify compliance with the manufacturer.
Commonly used trade names and technical identifiers for Wheel Speed Sensor.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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