Portable Exhaust Gas Analyzer Product Case
1. A basic understanding of the limits and test methods for pollutants emitted by vehicles at different stages of China's relevant emission regulations and standards will be conducive to the correct selection of exhaust gas analyzers for the automotive repair/testing industry. The new national standard GB18285-2005 "Limits and Test Methods for Pollutants Emitted from Vehicles" emphasizes the testing of the double idle speed test, the simple working condition method, and the detection of NOX (Nitrogen Oxide).
2. Below, I will give a brief introduction to the main features of the Japanese HORIBA MEXA-584L portable exhaust gas analyzer that is our company's agent and is synchronized with the international most advanced technology:
1. Large-screen LCD display, full Chinese interactive menu prompts and guides operation.
2. The detection accuracy of the instrument is in accordance with the ISO3930/OIML class0 standard, with an accuracy of one level.
3. The new "GB" was applied for exhaust gas detection at idle, dual idle and ASM conditions.
4. With the engine speed measurement and lubricant temperature measurement function.
5. The system menu can also provide detection of different fuel types (eg liquefied gas, natural gas) of the tested vehicle.
6. Provides RS232 serial communication interface.
Optional micro-printer.
8. Additional power inverters can use the 12V car power supply for motion detection.
9. With upgraded space for expansion, three gas upgradeable four gas, four gases can be upgraded five gas.
Third, why is the 4/F gas exhaust analyzer the best choice for the maintenance/inspection industry?
a: The research of automobile emission control experts shows that the combustion status of automobile engines directly affects the emission of harmful pollutants. The concentration of CO2 and O2 in the exhaust gas is an important parameter to characterize the combustion state of the engine. The measurement of the two data (CO2-12%, O2-1%) is the most basic function of the five-four gas exhaust analyzer.
b: The EFI vehicles with closed-loop control are basically equipped with three-way catalytic converters. The quality of the three-way catalytic converters directly affects the amount of pollutants discharged. How the purification power of the catalytic converter is related to the air excess coefficient λ value (mixed gas air-fuel ratio state) during engine operation, and the theoretical requirement is that the value of λ is around 1.0 (the air-fuel ratio is 14.7:1, and the lambda value is 1.0). ). How do we know the value of λ? It is calculated by calculating the concentrations of CO (carbon monoxide), HC (hydrocarbons), CO2, and O2 in the exhaust gas. And these data are only available to the five/four gas exhaust analyzers.
c: As mentioned above, CO2 and O2 in the exhaust are important parameters to characterize the combustion condition of the engine. We can effectively perform the engine operation based on changes in various gas emissions when using the five-gas exhaust gas analyzer for detection and diagnosis. Adjustments to ensure good combustion and discharge. For the same reason, we can also use the five-gas exhaust gas analyzer to detect some cheating (such as punching at the end of the exhaust pipe, loosening the interface pad, "a correction cone adjustment" of sacrificial power, etc.). Of course, whether the engine is in a good combustion condition or not, and how much emission of emissions is directly related to other factors such as the engine speed, temperature, and other factors. Usually, the advanced five-gas exhaust analyzer has the functions of measuring the rotation speed and the temperature of the lubricant.
Note: The NOx (nitrogen oxides) detected by the five-gas exhaust gas analyzer is the product of high temperature and high load during the actual operation of the automobile. Usually, the automobile needs to be tested on the dynamometer to simulate its actual operating conditions.
Fourth, the conclusion
There is a close relationship between the detection and emission of automobiles and the technical conditions of automobiles. The normal technical conditions of automobiles need to provide strong technical support and technical support in the maintenance industry of each vehicle, and improve the automotive testing industry for rapidly developing automotive manufacturing technologies. The technical and professional quality of personnel has become particularly important, and as time goes by, automobile emission standards and requirements for testing equipment will become more and more stringent, and the manufacturing technology of automotive exhaust gas detection instruments is also constantly developing. Automobile exhaust pollution provides more and more advanced and practical testing instruments. Understanding and mastering the relevant knowledge will enable the relevant personnel to understand the relevant characteristics more clearly when purchasing and using these instruments, so as to lay a good foundation for better carrying out pollution detection treatment of automobile exhaust gas.
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