NOX emissions

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Sirocco - 26 Sep 2004 17:10 GMT

Re: Acura Integra 94 - I recently switched to a lower grade gas. Could this
increase my NOX (nitrous oxide) emissions levels?

Thanks in advance.

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Eric F - 27 Sep 2004 23:24 GMT

the higher the octane, the slower the burn, lower octane, faster burn,
possibly could be less complete.
if the car can't take advantage of a higher grade, you're tossing money
away.

> Re: Acura Integra 94 - I recently switched to a lower grade gas. Could this
> increase my NOX (nitrous oxide) emissions levels?
>
> Thanks in advance.

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Sandy - 28 Sep 2004 02:24 GMT

My CA emissions test was a borderline pass last time and coming up again in
a few months.
Am I understanding correctly that it might improve my emissions slightly if
I run a tank of higher octane just before and during the next test?

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Bill Freeman - 28 Sep 2004 17:03 GMT

Backwards. Higher the octane the lower the flashpoint and the more
explosive (quicker) the burn. Lower octane, higher flashpoint and less
explosive burn - possibly more emissions. Emissions have more to do with
the amount of time allowed for the burn to complete in a given compression
cycle and the type of fuel. Compared to compression-ignition engines (i.e.
diesel) gasoline engines are cleaner .. . and propane/butane/lpg still
cleaner. The "fuels" the thing! Make mine Hydrogen! If you're getting
more NOX have your catalytic converter checked, FI, timing etc. All
warranteed items I believe . ..

> the higher the octane, the slower the burn, lower octane, faster burn,
> possibly could be less complete.
[quoted text clipped - 6 lines]
> >
> > Thanks in advance.

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