EPA demands DEF failure data from diesel makers. Investigation could force recalls and software fixes for engines already on U.S. roads. 30-day deadline set.
Selective catalytic reduction uses ammonia to break down NOx emissions into harmless nitrogen and water. It does this by first routing exhaust gases through an oxidation catalyst, which removes ...
The U.S. Environmental Protection Agency (EPA) is escalating its response to consumer complaints regarding Diesel Exhaust Fluid (DEF) system failures, announcing a new investigation aimed at major ...
Long-haul truckers and diesel engine enthusiasts had to rethink their entire operations in 2010 when the Environmental Protection Agency mandated selective catalytic reduction technology. Selective ...
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