logo

Standards Manage Your Business

We Manage Your Standards

SAE

SAE J2521_202210 : 2022

Inertia Dynamometer Brake Squeal Noise Test Procedure for Vehicles without Regenerative Systems

Standard Details

The SAE J2521 procedure applies to high-frequency squeal noise occurrences for on-road passenger cars and light trucks below 4540 kg of GVWR. The procedure incorporates high-temperature and low-temperature test matrixes but does not fully account for the effects of the environment on brake squeal.For this test procedure, squeal occurs when the peak noise level is at least 70 dB(A) between 1.25 kHz and 16 kHz for tests using full suspension corners or full axle assemblies or between 2 kHz and 16 kHz for brakes not using a full suspension corner.Before using this recommended practice for chassis dynamometer testing, review in detail the specifics related to at least (a) instrumentation, including in-cabin microphones, (b) threshold levels for noise detection, (c) temperature control priority between the front and rear axles, (d) vehicle loading and load distribution, (e) cooling air and environmental conditioning, and (f) detailed nomenclature and labeling of channels and sensors.

Cross Reference: IEC61672-1,IEC61672-2,IEC61672-3,J2598_202012,J2625_201707,J2786_201712,J2789_201809,J2933_202209,J3001_201604,VDA300,VDA303,VDA305,VDA306

General Information

Status : Revised
Standard Type: Main
Document No: SAE J2521_202210 : 2022
Document Year: 2022
Pages: 56

Life Cycle

Currently Viewing

Revised
SAE J2521_202210 : 2022
Knowledge Corner

Expand Your Knowledge and Unlock Your Learning Potential - Your One-Stop Source for Information!

© Copyright 2024 BSB Edge Private Limited.

Enquire now +