JJF 1221-2009 Replaced National Metrology Technical Specifications JJF

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

Publish Date: 2009-07-10 Implement Date: 2009-10-10 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: JJF 1221-2009

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: -

ICS Name: -

Publish Date: 2009-07-10

Implement Date: 2009-10-10

Pages: 20 pages

Scope

This standard specifies the metrological characteristics, calibration conditions, calibration items, and calibration methods of chassis dynamometers used for detecting exhaust pollutants from automobiles (hereinafter referred to as chassis dynamometers).
This standard applies to the calibration of chassis dynamometers used for detecting exhaust pollutants from automobiles equipped with spark-ignition engines under steady-state operating conditions, simple transient operating conditions, and compression-ignition engines under load-and-deceleration operating conditions.