JJF 1221-2025 Active National Metrology Technical Specifications JJF

JJF 1221-2025 Calibration Specification for Chassis Dynamometers of Automobile Emissions Testing

Publish Date: 2025-09-08 Implement Date: 2026-03-08 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: JJF 1221-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: -

Publish Date: 2025-09-08

Implement Date: 2026-03-08

Publisher: 国家市场监督管理总局

Technical Committee: 全国法制计量管理计量技术委员会机动车检验检测分技术委员会

Pages: 28 pages

Scope

本规范适用于稳态工况法、简易瞬态工况法及加载减速工况法汽车排气污染物检测用底盘测功机的校准。

Development Information

Drafting Units:

河南省计量测试科学研究院、中国测试技术研究院

Drafting Persons:

张奇峰、叶献锋、赵军

Word Count: 33 Thousand words Pages: 28 pages

Replace the following standards

JJF 1221-2009 Calibration Specification for Chassis Dynamometers for Automobile Emissions Testing

Referenced Standards

GB 3847-2018 Limits and measurement methods for emissions form diesel vehicles under free acceleration and lugdown cycle GB 18285-2018 JT/T 445-2021 Automobile chassis dynamometer

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