Bruce ( Shrinker )

Hysteric said

Thanks Greg these pics are more than I could ever hope for. Is it right to assume the different droplet sizes has to do with the vaporization rate and where and when it takes place during the process? Bruce said this some where in relation to droplet size:

"You have to learn how to balance the speed of vaporization and where it occurs in every engine. They are all different."

Is this what we are discussing here?

Click to expand...

with pump unleaded petrol,you have to be real careful with the amount of vaporization that you have on the up stroke (compression).The light vapors that boil at a lower temp have the expensive octanes in them,they can withstand quite a bit of heat energy for a short amount of time.
The higher temp ones are the cheap octanes,they cant withstand as much heat and are designed to go off on the down stroke and in the cats.
When you can control the droplet size you can to some degree adjust this relationship of what vaporizes when.
You still want vaporization and burning to be occurring while the piston is at TDC as it helps the chase down of the piston. Thats why the flame kernel strength is so important and why ignition timing is linked with CO production.
Thats why having mains fuel with different droplet size is key to producing power making CO2.