HJ/T 291-2006 (English Version) PDF

Scope: This standard specifies the technical requirements and test methods for the specifications, functions and performance of chassis dynamometers and five-gas analyzers, as well as basic requirements for computer control software functions, etc. This standard specifies the project requirements and test methods for daily inspection of testing stations, on-site installation inspection and type approval inspection of testing stations. In terms of items for type approval inspection, it stipulates the items that must be approved for inspection, and also stipulates the items for approval inspection that can be selected according to specific circumstances. This standard applies to the production, use and type approval inspection of exhaust pollutant measurement equipment for steady-state operating conditions of gasoline vehicles. This standard is promulgated for the first time.

HJ/T 291-2006 Referenced Document

GB 18285-2005 Limits and measurement methods for exhaust pollutants from vehicles equipped ignition engine under two-speed idle conditions and simple driving mode conditions

2006 HJ/T 291-2006 Equipment Specifications and Quality Control Requirements for Gasoline Vehicles Exhaust Emission Test in Steady-state Loaded Mode