The CDM-300DA type chassis dynamometer and emission detection system is developed and produced in accordance with the requirements of GB18285-2005 "Limits and Measurement Methods for Exhaust Pollutants from Gasoline Engine Vehicles", GB3847-2005 "Limits and Measurement Methods for Exhaust Smoke from Compression Ignition Engine Vehicles and Compression Ignition Engine Vehicles", and JT/T445-2008 "Automobile Chassis Dynamometer". It is applicable to the simple working condition emission detection of in-service gasoline vehicles equipped with gasoline engines with a maximum total mass not exceeding 3500kg and a maximum design speed not less than 50km/h, and the loaded deceleration working condition detection of in-service light diesel vehicles equipped with diesel engines with a rated power below 160kW. At the same time, it is applicable to the detection of power performance and economic performance of light vehicles with an axle load of 3000kg and an engine rated power below 160kW.

The heavy-duty diesel vehicle dual-axle (six-roller) chassis dynamometer and loaded deceleration smoke detection system is developed and produced in accordance with the requirements of GB3847-2018 "Limits and Measurement Methods for Visible Exhaust Pollutants from Compression Ignition Engine Vehicles and Compression Ignition Engine Vehicles - Free Acceleration Smoke Method and Working Condition Method" and JT/T 445－2008 "Automobile Chassis Dynamometer". It is applicable to the loaded deceleration smoke detection and chassis output power detection of in-service diesel vehicles equipped with diesel engines and with a maximum design speed not less than 50km/h. When the test speed is greater than or equal to 50km/h, the PAU can continuously and stably absorb 500kW (single axle) and 750kW (dual axle) of power. It is suitable for heavy-duty diesel vehicles with an axle load of less than 13000kg and an engine rated power of less than 500kW (single axle)/750kW (dual axle).