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
Richard Ewald schreef:
> Before everybody hits the panic button, you might want to look at the six
> gasses they are talking about.
> Carbon Dioxide is actually lower on an old car than it is on a new car.
> Back in the day cars spewed out very high carbon monoxide emissions, and
> therefore have very low carbon dioxide emissions. The Cat converter on a
> modern car converts the carbon monoxide to carbon dioxide. As far as global
> warming goes my old LBC is greener than a 2009 model car. Of course you
> would not want to start an old LBC in an enclosed garage. :-)
> So you have a paradox. Bad for smog = good for global warming. Good for
> smog = bqd for global warming. So I guess the question becomes, do you want
> to breathe, or use SPF 30,000 sunblock?
> The other five gases listed are not used in automobiles (with the possible
> exception of nitrous)
>
> While I agree we need to ep our eyes open, I am not yet ready to freak out
> over this.
>
> Rick
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