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A comment on Smokey’s New Hot Vapourizing Engine Creates Heat in Detroit (1983). Parent comment

Re:Smokey’s New Hot Vapourizing Engine Creates Heat in Detro... by qbrass on Sunday April 16, 2023 @07:01PM (#35594995)
NOx can be reduced using non-electronic equipment. Well, you could do it in 1983, anyway.
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Re:Smokey’s New Hot Vapourizing Engine Creates Heat in Detro... by actionfromafar on Sunday April 16, 2023 @08:10PM (#35595348)
Honda had a famously complicated mechanical contraption IIRC.
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Re:Smokey’s New Hot Vapourizing Engine Creates Heat in Detro... by dredmorbius on Thursday April 20, 2023 @05:26AM (#35637890)
I'd recently learned of emissions-reduction kits fitted to diesel systems which use ammonia to reduce NOx emissions.

I believe that's Selective catalytic reduction:

<https://en.wikipedia.org/wiki/Selective_catalytic_reduction>

The process uses "diesel exhaust fluid" (not to be confused with blinker fluid), sold as "AdBlue" in Europe, possibly elsewhere:

<https://en.wikipedia.org/wiki/Diesel_exhaust_fluid>

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