Study on dynamic characteristics of hot-film air mass flow sensor

LIU Wei; DING Shui-ting; ZHAO Li-feng

doi:10.13873/j.1000-97872014.05.030

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Study on dynamic characteristics of hot-film air mass flow sensor

更新时间：2025-09-11

- Study on dynamic characteristics of hot-film air mass flow sensor
- Vol. 33, Issue 5, Pages: 15-17(2014)
- 作者机构：
  
  1. 北京航空航天大学交通科学与工程学院
  2. 北京航空航天大学能源与动力工程学院
  3. 吉林大学汽车工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872014.05.030
  CLC： TP212
- Published：2014
- 稿件说明：
移动端阅览
[1]刘伟,丁水汀,赵立峰.热膜式空气质量流量传感器动态特性研究[J].传感器与微系统,2014,33(05):15-17.

LIU Wei, DING Shui-ting, ZHAO Li-feng. Study on dynamic characteristics of hot-film air mass flow sensor[J]. 2014, 33(5): 15-17.
[1]刘伟,丁水汀,赵立峰.热膜式空气质量流量传感器动态特性研究[J].传感器与微系统,2014,33(05):15-17. DOI： 10.13873/j.1000-97872014.05.030.

LIU Wei, DING Shui-ting, ZHAO Li-feng. Study on dynamic characteristics of hot-film air mass flow sensor[J]. 2014, 33(5): 15-17. DOI： 10.13873/j.1000-97872014.05.030.

摘要

空气流量传感器可以精确测量发动机进气量

发动机在进气管内的流动是流速变化较大的非稳态流动

需要流量传感器具有较快的动态响应特性。通过建立取样流道中的热固耦合模型

利用流体力学的方法

模拟计算动态响应特性

获得了流量传感器探头的温度场

利用阶跃脉冲模拟计算了传感器的动态响应特性

利用气道试验台进行动态响应特性的测试。热膜的热平衡需要一个自我调整的过程

所以

实测的动态响应速度低于计算模拟值。

Abstract

Air flow sensor can accurately measure intake flow of engine

air flow in engine intake manifold is unsteady flow whose flow velocity changes remarkably

therefore

flow sensor should has faster dynamic response. A thermosetting coupling model of a hot-film sensor is established based on CFD which is used to simulate dynamic response characteristics

temperature field of the hot-film flow sensor probe is simulated

and in addition

dynamic response characteristics of sensor is simulated and calculated using step pulse

test dynamic response characteristics based on flow test equipment. Dynamic response speed is lower than the value of simulation

because heat balance of hot-film needs a self-regulation process.

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Keywords

references

金属薄膜加热器的研究 [J]. 闫卫平,朱剑波,马灵芝,杜立群. 传感技术学报 . 2004(04)

史绍熙院士对层流流量计和内燃机空气流量测量的贡献 [J]. 王伯年. 内燃机学报 . 2001(06)

一种用于测量SiO 2 薄膜热导率的测试方法 [J]. 张立伟,马灵芝,唐祯安,蒋国平. 测控技术 . 2001(08)

The surface hot wire as a means of measuring mean and fluctuating wall shear stress [J] . D. Sturzebecher,S. Anders,W. Nitsche. Experiments in Fluids . 2001 (3)

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