BMW International Pollution Switzerland 
Green Car Congress
MAY 26, 2022
Papers from BMW and Hydrogen Energy Research Lab show that sufficiently lean hydrogen combustion in properly designed combustion chamber results in close to zero NO x. ID-Technologies, Fribourg, Switzerland. Compared with conventional hydrogen ICE, the opposed-piston engine has a significant advantage for low NO x hydrogen combustion.
Green Car Congress
MAY 21, 2020
On the opening day of the Frankfurt International Motor Show (IAA), the US Environmental Protection Agency (EPA) published a Notice of Violation: VW diesel engines with 1.6 Stuart Grange works in Empa’s Air Pollution/Environmental Technology Laboratory and also at the Wolfson Atmospheric Chemistry Laboratories at the University of York.
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