论述了热膜式空气质量流量计的基本工作原理, 通过对传感器单元的传热分析设计了一种温差式热膜空气质量流量传感器, 试验结果表明, 计算值和实测值具有良好的一致性。关键词: 汽车; 传感器; 空气质量流量; 传热; 热膜Abstract: Th is paper discu sses the fundam en tal p rincip le of the ho t2f ilm air m ass m eter and analyzes the t ran sfer of the sen so r elem en t, and a temperatu re2difference type ho t2f ilm air m ass sen so r w as designed. The experim en tal resu lt show s that the calcu lated datum s are in good agreem en t w ith the test datum s.Key words: veh icle; sen so r; air m ass f low; heat t ran sfer; ho t2f ilm
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