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> 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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