Method for computing motor-vehicle exhaust quality by No diluting
A technology for calculating motor vehicles and motor vehicles. It is used in volume measurement, vehicle testing, and measurement of flow/mass flow. It can solve problems such as low accuracy, short service life, and poor repeatability, and improve accuracy and stability. , the effect of simplifying the calculation
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[0063] As shown in Figure 1, the whole system consists of a chassis dynamometer 7 that can simulate acceleration inertia and road running resistance, a special gas analyzer 4, a gas flow analyzer 12, and a bell mouth with a fan 11 connected to the flow analyzer 12 , computer control system 2 and display 1.
[0064] The chassis dynamometer 7 runs on the road with a simulated vehicle load under transient conditions.
[0065] The gas analyzer 4 directly obtains the original tail gas 5 emitted by the motor vehicle 6 through the sampling probe, that is, CO, CO 2 , HC, NOx, O 2 concentration value.
[0066] The flow analyzer 12 measures the flow rate, pressure and temperature of the mixed gas 10 drawn into the flow measuring tube through the fan 11, and the mixed gas 10 is composed of the ambient air 9 and the original tail gas 5 emitted by the motor vehicle. A high-precision infrared sensor is fixed on the flow analyzer 12, and the NO concentration is measured by the infrared se...
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