Why is urea used in vehicles important? The main role of vehicle urea in the treatment of diesel exhaust is to control nitrogen oxides. The continuous increase of nitrogen oxides will accelerate the formation of ozone and secondary aerosols, which is an important predisposing factor for haze weather. Therefore, qualified vehicle urea is a key barrier to ensure that the national four diesel vehicle emissions can truly meet the national four emission standards. Once there is fraud in this part, even if the hardware standard of this car is higher, it will not help. Due to the wide market of urea for diesel vehicles, the demand is also large, and the profits are high, which makes some people start to fake. So, how can we know if the purchased urea is true or not? In this regard, the relevant experts have given the following methods to detect the true and false urea of ​​the car: First, the determination of chloride, carbonate and biuret in the urea for vehicles. Detection principle: The content of chloride, carbonate and biuret in vehicle urea was quantitatively analyzed by standard colorimetry. The standard color method is to select an appropriate chromogenic reagent to react with the component to be tested to form a colored compound, and then compare or measure the color depth of the colored compound. In this way, the content of chlorides, carbonates, etc. in the urea for vehicles can be detected. Second, the detection of urea content in the vehicle urea. Urea is an organic weak acid, which can be converted into a strong acid, and then reacted with a strong base, and then reacted with the corresponding chemical reagents, and judged according to the color of its appearance. Third, the detection of its formaldehyde content. Detection principle: The absorbance of vehicle urea and standard formaldehyde solution can be compared by UV-Vis spectrophotometer to determine whether it meets the standard. Fourth, check its alkalinity. Detection principle: The free ammonia in the sample is titrated with an acid standard titration solution in the presence of an indicator liquid. For the truck driver, when the long distance comes down, the oil money will be several thousand. The urea used in the car is relatively drizzy, but it is still worried that adding urea to the car will increase fuel consumption. In fact, this is a big misunderstanding. Reasonable use of vehicle urea will not only increase fuel consumption, but also save fuel. Therefore, buy a car with urea must buy genuine. Small Autoclave,Composite Material Autoclave,Composite Treatment Autoclave,Civil Use Autoclave JIANGSU OLYMSPAN THERMAL ENERGY EQUIPMENT CO.,LTD , https://www.compositesautoclave.com
Kelansu Jingxin 1
Integrity 315, do you know about Kelansujingxin No.1?
In 2019, "315" is coming, refused to counterfeit products from the beginning, as a truck driver, what kind of car do you choose? Buy genuine car urea, look for Kelansujingxin No.1 .