The durability and longevity of smog pumps notwithstanding, doesn't
combining fresh air with hot exhaust exiting the engine cause some of
the unburned gases to ignite in the exhuast, creating cleaner exhaust?
At least, that's what my service manual says. I realize it may not be
a big difference and that your car may be able to beat the ppm
requirements without it (which are adjusted upwards for wear & tear
already), but I believe there's more involved than dilution.
--- Chianese <chianese@sprintmail.com> wrote:
> Those of us old enough to remember 1968 and the first air pollution
> rules
> will agree with Tom.
>
> In all its wisdom, the government mandated emission limits in parts
> per
> million. It didn't take the engineers at most car companies to
> figure out
> that you just add more millions by injecting air into the exhaust to
> dilute
> the CO and NOx coming out of the engine. Unless you have a catalytic
> converter or high temperature reactor after the exhaust manifold,
> injecting
> air does nothing to the QUANTITY of pollutants leaving the engine.
> It only
> changes the RATIO of pollutants to inert gas.
>
> Once the Feds realized their mistake, It only took a year or two
> before they
> switched to measuring pollutants in parts per MILE. Air pumps
> disappeared
> instantly and catalytic converters entered the picture.
>
> You can remove all that plumbing, valves and the pump without feeling
> like
> an ecological pariah; the car will put out the same quantity of CO
> and NOx
> regardless of the concentration in the exhaust pipe. In fact, since
> you
> don't have to expend power to run the air pump, you will actually
> pollute
> less by removing it.
>
> Rick Chianese
> Orlando, FL
> SRL311-14035
>
> _______________________________________________________
>
> Alas, I love clean air... but a well tuned up roadster, with the
> earlier SU needles, can run pretty clean without the air injection
> set up.
>
> Cheers,
>
> Tom
> ________________________________________________________
> Hi List,
>
> Does anyone have a spare anti back fire valve that they would be
> willing to
> part with?
>
> Thanks
> Deena & Joe
> 69 1600
> Westmont, IL
=====
Adam
'70 1600 SPL311-28181
http://www.picturetrail.com/abend
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