Save The Environment
HIROSHIMA, Japan — Mazda has developed Japan's first urea selective catalytic reduction system for passenger cars. The urea SCR system will be teamed with the company's new turbocharged 2.2-liter clean diesel in the face-lifted 2010 Mazda CX-7. Similar to advanced exhaust treatment systems developed by several European automakers, Mazda's urea SCR system helps reduce oxides of nitrogen in the diesel exhaust. A urea mixture is sprayed directly into the exhaust gas flow to purify NOx. Mazda's face-lifted CX-7 with the new urea SCR system is slated to go on sale later this year in Japan, as well as some European markets.
Mazdas SCR system purifies vehicle exhaust gases by spraying AdBlue®*2 aqueous urea directly into the exhaust flow in front of the catalytic converter. Through a chemical reaction, the urea converts approximately 40 percent*3 of nitrous oxides into harmless nitrogen. Previously, the large size of SCR systems limited their use to trucks and buses. By reducing the size and weight of the system components, which include an AdBlue® storage tank fitted under the luggage area, Mazda is the first Japanese automaker to successfully equip a passenger vehicle with an SCR system. Even with the added components, the diesel powered CX-7 offers the same 455 liters of luggage space (VDA approved*4) as gasoline engine models. Additionally, Mazdas SCR system was designed to minimize consumption of AdBlue®, enabling the clean diesel CX-7 to run for 20,000 kilometers between refills under normal driving conditions.
AdBlue® is a form of aqueous urea and a registered trademark of the Verband der Automobilindustrie e.V. (VDA) Compared to a clean diesel CX-7 with no SCR system under the New European Driving Cycle test conditions.
A method of measuring luggage space approved by the Verband der Automobilindustrie e.V. (VDA)
