As the name AUS32 would suggest, it is a 32.5% solution of high-purity urea in demineralized water that is clear, non-toxic and is safe to handle. However, it can be corrosive for some metals, and must be stored and transported using the correct materials. The AdBlue trademark is currently held by the German Association of the Automobile Industry (VDA), who ensure quality standards are maintained in accordance with ISO 22241 specifications.[1]
AdBlue is carried onboard SCR-equipped vehicles in specially designed tanks, and is dosed into the SCR system at a rate equivalent to 3–5% of diesel consumption. This low dosing rate ensures long refill periods and minimises the tank's impact on chassis space. On-highway SCR systems are currently in use throughout Europe, in Japan, Australia, Hong Kong, Taiwan, Korea, New Zealand and Singapore. The United States Environmental Protection Agency's (US EPA) 2010 legislation will limit NOx to levels that will require North American trucks to be equipped with SCR post-2010. The current generic name in North America for AUS32 is diesel exhaust fluid (DEF). Some trucking industry OEMs have already developed branded SCR solutions, such as Daimler's BlueTec.
All European truck manufacturers currently offer SCR equipped models, and the future Euro6 emission standard is set to reinforce the demand for this technology. SCR systems are sensitive to potential chemical impurities in the urea solution, therefore, it is essential to maintain high standards of AdBlue quality according to the ISO 22241 standard.
The use of SCR technology in Europe made it necessary to develop an AdBlue supply infrastructure. AdBlue is available from thousands of service stations, this locator finder is updated monthly with new Retail sites selling AdBlue. It can also be purchased in canisters of 5 or 10 litres at service stations. Larger quantities of AdBlue can be delivered in, for example, 208 litres (46 imp gal; 55 US gal) drums, 1,000 litres (220 imp gal; 260 US gal) intermediate bulk container (IBCs), and bulk.
[edit] References
- ^ Initially the specification was described in DIN 70070. In 2006 the worldwide ISO 22241 standard was introduced. Additional to the specification this also mentions the analytical test methods to verify the specification and requirements for storage, transport and handling of AdBlue. Trautwein, Wolf-Peter (2003). AdBlue as a Reducing Agent for the Decrease of NOx Emissions from Diesel Engines of Commercial Vehicles. Technical Report DGMK Deutsche Wissenschaftliche Gesellschaft für Erdöl, Erdgas und Kohle e.V. 616-1.
[edit] External links
- AdBlue search engine for Europe
- AdBlue advice for contamination and decay
- Diesel Exhaust Fluid search engine for North America
- Guidelines and technical information on handling AdBlue correctly
- MSDS Sheet for AdBlue
- Component limits for AdBlue as outlined in DIN 70070
- FactsAboutSCR.com North American SCR Stakeholders Group
- United States EPA DEF Purchase Location Finder
- Independent AdBlue market analysis
Increasing government demands that the transport and logistics industry comply to lower emission targets has put pressure on transport companies to reduce their carbon footprint. How will this affect truckload shipment then?
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