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
CN101074903AInactive Publication Date: 2007-11-21ZHEJIANG UNIV MINGQUAN TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV MINGQUAN TECH
Publication Date
2007-11-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of using NO dilution ratio to calculate exhaust-gas quality of motor vehicle includes measuring original exhaust-gas of motor vehicle, measuring mixed gas, calculating NO dilution ratio, converting flow rate of diluted exhaust-gas to be flow rate of standard state, calculating flow rate of exhaust-gas from motor vehicle under standard state, calculating exhaust-gas quality of motor vehicle at unit time an calculating total amount of exhaust-gas from motor vehicle.
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Description

technical field

[0001] The invention relates to a method for detecting and calculating the exhaust gas quality of a motor vehicle, in particular to a method for calculating the exhaust gas quality of a motor vehicle by using the NO dilution ratio. Background technique

[0002] The calculation of the dilution ratio is one of the important links in the test system of the simple transient state method of motor vehicles (VMAS). The VMAS test system is a test system used to measure the quality of motor vehicle exhaust emissions. The quality of exhaust emissions is calculated by the concentration of motor vehicle exhaust and the flow rate of motor vehicle exhaust per unit time. It is difficult to directly measure the exhaust flow of motor vehicles. The general method is to use a flow analyzer to measure the flow rate of the mixed gas, and then multiply it by the "dilution ratio" to obtain the actual emission of the motor vehicle. The dilution ratio reflects the degree to which th...

Claims

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