Quote:
Originally Posted by pgfpro
Yes. It's the first thing I noticed when I started my waste solvent tests after a tear down of the engine for inspection. Today's pump fuel in the USA is garbage IMHO. Plus, it doesn't work very well for today's DI engines. Just a quick visual of the exhaust tail pipe on a DI new engine drives me crazy!!! My 22' Toyota Tacoma that I bought brand new drove me crazy when I first got it with all the black soot inside the tail pipe. I'm not a chemist but I'm smart enough to know that this black soot is definitely a byproduct of incomplete combustion. The Tacoma now has 66k on it and still doesn't consume any oil between oil changes. So, it's not oil consumption that is making the soot.
On the Talon the tail pipe is clean as can be on waste solvent, petrol race fuel and E98. On E85 its cleaner then then pump petrol but not as clean as E98 or waste solvent and race fuel.
Now the bigger question is why is todays fuel this way??? Is it a cost issue? Is it a product of design issue? Is it a EVAP issue? Is it a VOC issue?
I'm going to do a test on my home-built combustion tester in a few weeks to show the difference between todays pump fuel and waste solvent.  |
I NB that people have been cleaning carbon out of engines for years with water mist or steam.
I also NB that:
Red hot carbon + steam (super heated)
= Water Gas: a mixture of
carbon monoxide and
hydrogen...
https://en.wikipedia.org/wiki/Water_gas
Water mist does nothing for combustion speed, but evaporating water in the intake tracts (Water Injection) does allow for dramatically higher compression without ping, thx to Evaporative Cooling.
That's been in use for ages too.
I haven't seen what the exhaust etc of a Turbo engine with Water Injection looks like pgfpro.
Have you?
I look forward to your tests.