节点文献
汽车排放瞬态工况法测量用气体流量分析仪
The Gas Flow Analysis Equipment for Gasoline Vehicle Exhaust Emission Test in Short Transient Loaded Mode
【Author】 Sui Xiuwu Li Yang Du Yuhong Li Qinghe Xie Wang (School of Machinery and Electron, Tianjin Polytechnic University, Tianjin 300160, China)
【机构】 天津工业大学机械电子学院;
【摘要】 本文采用一体化的结构形式,设计了三角柱式涡街发生体和压电式涡街检测探头,配以装在管道上的氧电池、热电阻,以及集成式硅压力传感器,完成汽车排放稀释气体的体积流量、氧浓度、温度、气体绝对压力的测量,并通过C8051F021单片机进行数据处理。标定实验表明,流量传感器的仪表系数为1159.91,基本误差为0.93%。
【Abstract】 The paper designs a kind of gas flow analysis equipment with a triangular prism vortex shedder,a piezoelectric detector and oxygen cell,temperature resistance,piezoresistive transducer installed on the sample pipe of the vehicle exhaust emission.The equipment measures the vehicle exhaust emission gas flow rate, oxygen concentration,temperature and absolute pressure,and MCU C8051F021 is used to process the signals. The calibration experiment gives the sensor coefficients of flow meter is 1159.91,and the relative error is only 0.93%.
【Key words】 Vehicle exhausts emission; Gas flow analysis equipment; Vortex flow meter; Pressure sensor; Micro computer unit;
- 【会议录名称】 2008中国仪器仪表与测控技术进展大会论文集(Ⅰ)
- 【会议名称】2008中国仪器仪表与测控技术进展大会
- 【会议时间】2008-06
- 【会议地点】中国湖南湘潭
- 【分类号】TP216
- 【主办单位】中国仪器仪表学会、《仪器仪表学报》杂志社、《国外电子测量技术》杂志社、《电子测量技术》杂志社