高效型SCR尿素计量泵精度标定台设计与验证  

Design and verification of efficiency calibration platform for measurement accuracy of SCRureapump

作　　者：叶燕仙[1] Ye Yanxian(Zhejiang Agricultural Business College,Shaoxing 312088,China)

机构地区：[1]浙江农业商贸职业学院,浙江绍兴312088

出　　处：《汽车知识》2024年第8期154-156,共3页AUTOMOTIVE KNOWLEDGE

基　　金：2023年浙江省教育厅一般科研项目“高效型SCR尿素计量泵精度标定台开发”(项目编号:Y202351603)。

摘　　要：柴油机广泛应用于中重型汽车中,选择性催化还原技术(SelectiveCatalyticReductong,SCR)已成为柴油车降低NOx排放的首选。尿素泵作为SCR系统的核心部件之一,其计量精度对系统运行效率至关重要。针对传统的尿素泵标定方法的不足,设计一种基于微小椭圆齿轮流量计的尿素计量泵精度标定台,包括流体回路设计、机械集成、电控单元和人机界面设计。应用验证表明,设计的标定台运行稳定、精度高,提高了标定效率。Diesel engines are widely used in medium and heavy-duty vehicles.SCR technology has become the preferred choice for diesel vehicles to reduce NOX emissions.As one of the core components of the SCR system,the metering accuracy of the urea pump is crucial to the operational efficiency of the system.A precision calibration platform for urea metering pumps based on micro elliptical gear flow meters has been designed and applied for verification,including fluid circuit,mechanical integration,electronic control unit and human-machine interface.The calibration platform runs stably and has high accuracy,improving calibration efficiency.

关 键 词：SCR 尿素计量泵 精度 标定台 

分 类 号：U467[机械工程—车辆工程]