Rick,
This does not mean anything. It is in gr/km that counts.
Kees Oudesluijs
Richard Ewald schreef:
> Saying that older cars have higher CO2 emissions than new cars is just
> flat wrong.
> A non emission controlled LBC will produce smog number similar to the
> following:
> HC 1000 PPM
> CO 7%
> CO2 3-4%
>
> An emission controlled OBDII car will produce numbers similar to the
> following:
> HC 10 PPM (or less, I have seen smog tests that register 0)
> CO 0-.1%
> CO2 13% or so.
>
> So even if you assume a 100% conversion in the atmosphere of CO to CO2
> you still come up short. This is due to the hydrocarbon emissions.
>
> I stand by my comments.
>
> Rick
>
> On Sat, Apr 18, 2009 at 8:41 AM, Oudesluys <coudesluijs@chello.nl
> <mailto:coudesluijs@chello.nl>> wrote:
>
> As older cars generaly use more fuel the CO2 emissions are higher
> than in modern cars. You are confusing CO2 with NOx. If CO is high
> NOx may be low and v.v., although it is an approximation.
> The catalist reduces the emissions of smelly hydrocarbons
> )unburned fuel), and no odour, poisonous CO, carbonmonoxide,
> turning it into H2O, water, and CO2, carbondioxide, which an
> asphixiate in much higher than natural concentrations.
> The CO in the atmosphere is turned into CO2 by green plants and
> algae, so although potentially unpleasant it has little effect in
> open space. Very unpleasant are the hydrocarbons and NOx, they can
> be the cause of smog and ozone with low winds, sunshine and high
> temperatures in enclosed cities.
> Kees Oudesluijs
>
>
>
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