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TechnoNews - USA - GM leans toward urea injection to clean up diesel emissions
DETROIT,MI,.USA -Automotive News, by RICHARD TRUETT -8/31/05: -- General Motors is leaning toward a controversial emissions system, urea injection, that enables diesel engines to meet tough pollution standards in place for 2009... The technology, also known as selective catalytic reduction, is used on freight-hauling trucks in Europe... But the EPA questions the use of selective catalytic reduction because the driver must keep the vehicle from running out of urea... If the urea tank runs dry, the driver will notice no difference in performance. But the vehicle won't meet emissions standards for smog-producing oxides of nitrogen, or NOx...
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