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post #11 of (permalink) Old 5th November 2008
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I can see where you are coming from, but the whole point of the lean burn was that complete combustion would remove carbon monoxide from the exhaust.

HC (unburnt fuel) would also disappear.

Regarding sulphur & nitrogen oxides - better refining processes (removing it before it even hits the tank) would again be a better solution rather than 'adding on' something else that goes wrong.

The main reason that the modern day car can deliver better performance whilst being handicapped with emission control devices and the weight of all the safety gear is more due to ECU software linked to very precise fuel injection, than for any other factor.

Another thing worth bearing in mind is the environmental cost of mining and transporting the platinum, rhodium and palladium which is needed to produce these catalysts - a bit like the materials involved for hybrid batteries - is it a case of 'saving' the planet at any cost to the earth?


This job should never be complete - the day I think I've done it all, is the day I resign.

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