Re:Why Palladium Is Suddenly a More Precious Metal
by Cogito on Monday October 28, 2019 @08:26PM
(#21383220)
Sorry, why do you think that?
More complete combustion would result in more CO2, H2O, and energy. The by products from incomplete combustion are the ones we want to limit - CO, C, various N and S compounds etc.
Re:Why Palladium Is Suddenly a More Precious Metal
by refurb on Monday October 28, 2019 @08:35PM
(#21383266)
Not always. Nitrogen oxides are due to higher temps which is more efficient. In order to meet emissions standards, you often take a hit in efficiency (or at least drive-ability).
Re:Why Palladium Is Suddenly a More Precious Metal
by Cogito on Monday October 28, 2019 @08:43PM
(#21383310)
Makes a lot of sense, thanks.
Re:Why Palladium Is Suddenly a More Precious Metal
by selectodude on Monday October 28, 2019 @08:36PM
(#21383275)
The more efficient the combustion, the hotter it is, and the more NOx is formed. Nothing to do with incomplete combustion. Nitrogen doesn't combust.
Re:Why Palladium Is Suddenly a More Precious Metal
by Cogito on Monday October 28, 2019 @08:42PM
(#21383306)
Makes sense - it's not incomplete combustion but rather atmospheric contamination that allows for NOx products, and the amount of those is dependent on heat of combustion. Thanks!
Re:Why Palladium Is Suddenly a More Precious Metal
by selectodude on Monday October 28, 2019 @08:55PM
(#21383363)
There's a not insignificant amount of nitrogen in the fuel itself, as well.
For curious, I think this is because fuel economy and complete/proper combustion are directly at odds with each other. Better MPG means nastier exhaust, so a better catalytic converter will help clean that up. OP?