QC/T 824-2019 in English
VALIDRotational speed sensor for automobile
- Issued on:2019-08-02
- Implemented on:2020-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
本标准规定了汽车用转速传感器的要求、试验方法、检验规则等。
本标准适用于M、N、O类汽车用曲轴转速传感器、轮速传感器和变速箱转速传感器。其它机动车可参照执行。
Introduction
Standard Evolution and Scope of Application
QC/T 824-2019 replaces the 2009 version of the standard. The main technical changes include:
| Revision Dimensions | 2009 Version | 2019 Version |
|---|---|---|
| Scope of Application | No distinction between sensor types | Clearly define the three categories of crankshaft speed sensor, wheel speed sensor and transmission speed sensor |
| Technical Parameters | Uniform indicators | Differentiated requirements for passenger cars and commercial vehicles |
| Electromagnetic compatibility | Conducted immunity is not specified | New requirements for conducted immunity according to GB/T 21437.2 |
Analysis of core performance indicators
4.2.1 Hall/magnetoresistive sensors
Typical application case: Under the condition of 1.2mm air gap, the measured signal rise time of a wheel speed sensor of an electric vehicle is ≤8μs (the standard requires ≤10μs), which meets the 16.8V high-level output requirement under a high temperature environment of 150℃.
Key Requirements for Environmental Adaptability
| Test Items | Crankshaft Sensor | Wheel Speed Sensor |
|---|---|---|
| Rapid Temperature Change | -40℃~125℃ | -40℃~150℃ |
| Protection Grade | IPX9K/IPX7 | IP6K9K |
Implementation Recommendations
- Model selection and matching: Commercial vehicles should give priority to the 550h@130℃ durability specification, and passenger cars can adopt the 400h standard
- EMC design: It is recommended to meet both the GB/T 33014.2 anechoic chamber method and the GB/T 19951 electrostatic discharge requirements
- Chemical protection: The crankshaft sensor installed in the engine compartment needs to pass the gearbox oil immersion test
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