Background on the 2.0L diesel engines at the core of the Volkswagen emissions testing debacle
Green Car Congress
SEPTEMBER 21, 2015
Volkswagen engineers redesigned a large number of the base engine components to improve acoustics, fuel consumption, and exhaust gas emissions. This is referred to as the Gen 1 aftertreatment design in the EPA/ARB documents.). It is then converted to ammonia which interacts with NO x on the SCR catalyst to form water and nitrogen.
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