[Vwdiesel] injectors

[LBaird119@aol.com]

In a message dated 9/15/2005 1:14:25 AM Pacific Standard Time, 
jhsg at sasktel.net writes:

> Multistage injection sort of creates it's own turbulence from more
> convection within the air charge spreading the fuel cloud around, and it's
> hotter, hence a faster reaction when the subsequent pulses are injected.
> Instead of one big fire, that is a huge cloud of fuel burning steadily
> inward to the center (and very hotly), you get two or more injection events
> that get a compression rise initially, so the subsequent injection events
> use more of the available oxygen in the cylinder, with a lower egt, less
> nitrogen emissions.  Same amount of fuel injected in one pulse gets much
> higher emissions and egt.
> 


  But then isn't there the aspect of multi puls injection where the pressure 
rise is actually slower and more even thus much less rattle.  That's the 
big factor in the newer diesels being quieter as far as I knew.
     Loren