全流稀释风道机动车排放颗粒物采集系统的集成及其流量控制和调节

Full-flow dilution tunnel sampling system for articulate matters from vehicle emission—its integration,flowrate control and adjustment

以机动车排放颗粒物采集和分析为主要目的,开发了全流稀释风道机动车排放颗粒物采集系统。文章阐述了全流稀释风道的系统集成以及流量控制系统的设计和调节,其中包括设计应用范围、主要技术参数、系统检定等。流量控制系统采用的关键技术,即文丘里管组合装配方式具有控制流量范围广、变更灵活的特点,可以适应小到摩托车,大到重型柴油车等不同类型车辆检测的需要。

Aiming at particulate matters sampling and analysis, a full dilute tunnel sampling system for vehicle emission was developed. Its basic integration of full flow dilute and flow control system such as application fields, major technical parameters and Adjustment are introduced with emphasis. As the kernel of flow control system, wide flow range and easy alteration are characteristics of assembled critical flow venturitube.