- 16. What is an SCR system and how does it work?
- SCR (Selective Catalytic Reduction) system includes AdBlue® and Selective Catalytic Reduction, which uses ammonia or urea solution (AdBlue®) to react with nitrogen oxides to generate toxic nitrogen oxides (NOx). Chemical reduction, converted to nitrogen and water that does not affect the natural environment. However, pure ammonia gas is a toxic gas and it is not easy to store. Therefore, AdBlue® is mainly used as a reactant of the SCR system. It has high stability and no toxicity, and is easy to store and transport.
- 15. How to reduce or reduce nitrogen oxide emissions? (EGR v.s SCR)
- The two most common systems at the moment are: EGR (Exhaust Gas Recirculation) and SCR (Selective Catalytic Reduction-Supply of Urea Solution), of which SCR technology is currently the only one meeting the EU Environmental Protection Regulations IV/V (Euro IV, V) and the sixth (Euro VI) and US Environmental Protection Agency EPA 2010 / 2014 emission standards, the most economical and reliable choice.
- 11. The amount of nitrogen oxides emitted by domestic transport?
- According to the national motor vehicle statistics of the Ministry of Communications, although the proportion of diesel vehicles is not high, according to the sales statistics of gas stations across the country, diesel sales account for about 30% of all sales. The particulate pollutants produced by diesel vans are about the same as the sum of all other modes of transport. Sulfur oxides and nitrogen oxides are higher than the total of all other modes of transport. Therefore, the pollution emissions are also considerable.
- 10. Nitrogen oxides (NOx) harmful to humans?
- Prolonged exposure to nitrogen oxides (NOx) can cause chronic pharyngitis, chronic bronchitis, and can also cause varying degrees of neurasthenia syndrome and dental erosion. In addition, it also induces cancer of the lung cells; impaired development of children's lungs; the formation of acid rain can cause baldness.
- 9. How does nitrogen oxides (NOx) occur?
- The main sources of nitrogen oxides (NOx) are pollution from general industrial activities, vehicles and engines that use engines (engines), and the burning of fossil fuels.
- How about the AdBlue/DEF QC?
- For assuring our clients of the best quality, each batch of AdBlue/DEF has to be inspected by a valuable instrument (Inductive coupled plasma) before shipping, thus the contents of the impurities are under well controlled and detected. Base on this inspection, your SCR system is protected, not only reducing the emissions but also extending the lifetime of your vehicle.
- AdBlue/DEF and diesel will be confused?
- Cylinder diesel nozzle diameter of the cylinder is larger than AdBlue / DEF injection pipeline, so diesel will not be injected into the cylinder AdBlue/ DEF. On the contrary the situation will never arise because there are a AdBlue/ DEF cylinder magnets, magnet can only open AdBlue / DEFnozzle valve. No-cylinder diesel magnet, AdBlue/ DEF nozzle valve would not be opened, it will not AdBlue/ DEF injection-cylinder diesel.
- How much DEF is required (dosing)?
- DEF for us Application is 2-3%, but 4-6% for Eropean Engines. engine manufacturers have stated that their SCR systems will require a 2%-6% AdBlue / DEF dosing rate compared to the amount of diesel consumed. This works out one gallon of AdBlue / DEF required for every 300 miles traveled (assuming fuel economy of 6 mpg). At this rate, a heavy duty truck traveling 120,000 miles annually would require approximately 400 -600 gallons of AdBlue / DEF per year. Note, trucks manufactured for sale in Europe do not use EGR with their SCR systems, so their AdBlue / DEF dose rates are higher.
Trucks are expected to have on-board urea tanks that range in size from 15-30 gallons. With this capacity, it will not be necessary to add AdBlue / DEF each time the truck refuels. - 4. Catalyst Consumption Ratio (AdBlue®) Consumption Ratio?
- The consumption of AdBlue® is different depending on the amount of vehicle exhaust emissions and EU regulations. For example, a heavy truck requires about 4 to 6 liters of AdBlue® for every 100 liters of diesel fuel consumed.
- 3. What is AdBlue® (catalytic reductant/vehicle urea solution)?
- AdBlue® is an odorless, colorless, transparent solution made from 32.5% industrial urea and 67.5% deionized water. It is stored in a vehicle's exclusive AdBlue storage tank. It mixes with the exhaust gas and enters the SCR system. Then NOx ( Nitrogen oxides) are converted to harmless nitrogen and water and are in compliance with EU IV/V/VI emission standards.
- 2. AdBlue® other names?
- In the United States and Canada, DEF (Diesel Exhaust Fluid) is known in Europe as AdBlue®, China was named as nitrogen oxide reductant in 2012, ISO is AUS32, and Taiwan is called automotive urea solution.
- 1. Why is it called AdBlue®?
- AdBlue® is a registered trademark of the German Automobile Industry Association (VDA, Verband der Automobile industries) and is subject to the approval of the ISO 22241 standard by the German Automotive Industry Association.
- What is AdBlue / DEF?
- AdBlue & Diesel exhaust fluid (DEF) is one of the key elements in the SCR process. It’s a nontoxic solution of 67.5%. water and 32.5% automotive grade urea. AdBlue / DEF helps to convert NOx into nitrogen gas and water vapor. It is stable, colorless, odorless, and meets accepted international standards of purity and comoposltion.