Application of TF100 Thermal Gas Mass Flow Meter in Automobile Exhaust

Abstract: The application information of TF100 thermal gas mass flow meter in automobile exhaust gas is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. 1. Introduction With the increasing number of automobiles, automobile exhaust pollution is also increasingly exposed. All countries in the world have issued relevant standards for this. my country has issued relevant laws and regulations to limit automobile exhaust emissions according to specific circumstances. either country. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the application article details of TF100 thermal gas mass flow meter in automobile exhaust. 1. Introduction With the increasing number of automobiles, automobile exhaust pollution is also increasingly exposed. All countries in the world have issued relevant standards for this. my country has issued relevant laws and regulations to limit automobile exhaust emissions according to specific circumstances. Whether domestic or foreign, automobile manufacturers have successively developed testing equipment for automobile exhaust. This kind of equipment not only has the function of analyzing whether the exhaust gas of the automobile conforms to the relevant national standards, but also has the function of analyzing the failure of the automobile engine, and can also be used as an important tool for testing the performance of the automobile. The following is an introduction to the TF100E thermal mass flowmeter applied in the 'Automotive Comprehensive Parameter Detection System' developed by Shanghai BYD Company with independent copyright. 2. Introduction of TF100 thermal mass flowmeter TF100E thermal gas flowmeter is a special measuring instrument of SAILSORS (China) company for the measurement of automobile exhaust gas. SAILSORS has nearly 20 years of successful experience in gas quality measurement. SAILSORS (China) has also successfully operated in China for nearly three years, and has rich experience in gas measurement. In the application of the 'Automotive Comprehensive Parameter Detection System' project, our company has successively adopted a certain foreign brand and a certain domestic brand of thermal gas mass flowmeters. Both the actual measurement results and theoretical data are too different, and the application effect is not good. ideal. The TF100E product produced by SAILSORS (China) is a special product for automobile exhaust. The effect of using this product is ideal, and it has reached our design accuracy. (Picture 1: Actual product) Features: 1. The probe rod has a scale, which is easy to install; 2. Split design (50 meters), suitable for high temperature applications; 3. Stable and reliable, high precision; high temperature, high humidity, dirty gas Suitable place for application 2.1 Principle of thermal gas mass flowmeter The probe has two probes, one is a heating probe, which contains high-precision PT20 resistance; the other is a reference probe, which contains high-precision PT1000 resistance. The heating probe measures the wind speed; the reference probe measures the temperature of the wind speed. We know that thermal mass flow meters are based on thermal diffusion technology. The probe inserted into the fluid will lose the heat of the heated flow probe due to the influence of the flow velocity of the medium. Then, the relationship between its heat loss and the mass flow of the fluid can be expressed by the following mathematical model: P/△T= AB(Q)m————————————(1) Among them: P represents the power consumption, △T represents the temperature difference between the two probes, Q represents the mass flow rate, m represents the exponential coefficient, and A and B are constants related to the physical properties of the gas. From formula (1), it can be seen that the ratio of the power of the heating probe to the temperature difference is the mass flow of the fluid. If we keep the ΔT constant and measure the flow of the fluid according to the relationship between the power consumption and the mass flow of the fluid, this method is called“constant temperature difference”Its advantages are: it is very sensitive at small flow points, the minimum can reach 0.08m/s, and it has good linearity; the velocity response is fast, and the minimum can reach 250ms. The range ratio is wide, generally greater than 100:1, but this principle also has shortcomings. The sensitivity of the range above 90m/s is poor, which also depends on the manufacturing process level of the sensor. 3. The main principle of the solution of the automobile comprehensive parameter detection system: the engine has different exhaust volume, different exhaust pressure and different gas temperature at different speeds of the automobile. According to this, the engine performance of the automobile can be calculated. According to the gas analysis probe inserted into the pipeline, the exhaust gas of the vehicle at different speeds can be analyzed, so as to determine whether the vehicle emission meets the relevant industry standards. Among them, the thermal mass flowmeter is responsible for the important work, responsible for the exhaust volume, temperature measurement, and pressure measurement. These data are also important parameters for measuring the working ability of the engine, and also an important basis for the maintenance of the majority of automobile maintenance personnel. As we all know, exhaust gas measurement is relatively complicated, and its composition measurement and exhaust volume measurement are very important to the performance of the engine and the whole machine. Therefore, to ensure the accuracy of the system is 3%, it is necessary to ensure the accuracy of each function of the system. Through our actual testing, our initial design accuracy has been achieved. The actual test curve of TF100E thermal gas mass flowmeter is shown in series 1. 4. Conclusion The high reliability and repeatability of SAILSORS' TF100E thermal gas mass flowmeter, as well as the on-site maintenance-free, many advantages make this product suitable for use in automobiles The role played in exhaust gas measurement systems is increasingly evident. It is not only applicable to automobile manufacturers, but also applicable to the vehicle inspection department and the automobile repair industry, providing an important guarantee for the quality of automobile exhaust gas. SAILSORS has been committed to the development and research of thermal mass flow meters, and has a deep understanding of its applications in various industries. At the same time, it is also more committed to serving Chinese enterprises with advanced technology, high-quality service and accurate system solutions. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Application of TF100 Thermal Gas Mass Flow Meter in Automobile Exhaust'

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