York, Empa study finds retrofitting of VW diesel engines was successful
Green Car Congress
MAY 21, 2020
In Switzerland, retrofitting the EA 189 engine was mandatory. Cars from General Motors (Opel, Vauxhall, Chevrolet), Renault-Nissan and Fiat Chrysler Automobiles emitted almost twice as much NO x into the environment on cold days as on warm days. The NOx values for the 1.6-liter doi: 10.1021/acs.estlett.0c00188.
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