[Vwdiesel] Diesel particulate filters make the grade in Alberta

Val Christian val at mongobird.com
Tue Aug 9 00:09:12 EDT 2005

I can't comment on all the chemistry of diesel cycles,
but particulates are incomplete combustion, including when
carbon remains unburned.   

CO is formed also by incomplete combustion, but is not a 
particulate.  In fact, CO is odorless and not readily visible.

While there may be CO when there are particulates, it does not
necessarily follow that when there is CO, there will be particulates.


> Gerry, 
> It is my understanding that this is true, to an
> extent.  Basically, there is no CO when there is no
> smoke present.  Anytime there is smoke (like when you
> stomp the accelerator pedal), there is CO as well.  
> Someone correct me if I'm wrong.
> David
> --- Gerry Wolfe <gjwolfe at telus.net> wrote:
> > My understanding was that CO is formed when there is
> > incomplete combustion 
> > i.e. inadequate oxygen to burn all the fuel and that
> > since a diesel always 
> > (?) has an excess of air available (turbo
> > especially) , CO2 was the main 
> > byproduct and that CO was almost non-existant?
> David Cook
> Red '86 Cabriolet Diesel Powered
> Red '90 g60 Corrado 
> Brown and White '78 Westy Campmobile "Bear"
> and others in various states of disrepair
> Pictures here: community.webshots.com/user/superdave5599
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