GDICI is also in the works and beyond the proof of concept stages
Another potential is vaporizing the gasoline just before DI, but the pressures
involved 'almost' phase changes it back into a liquid...that is where tons of
patents *WILL* be
My bet is in pre-chambers. Either or for both liquid gasoline and vaporized gas
Current prototypes of GDICI has exhaust particulates and NOx in the same realm
of diesel
Currently, the Fed's have grants for sewage treatment plants in the Continental USA
for flare off gases to be converted into LNG for automotive use. I'm not a fan
of that, yet. My work in solid state compressors beats all of the piston compressors
both in efficiency and longevity. My city's PW's has an approx $2.5M grant just
for that, but am skeptical of how many gallons per day, vs the city fleet and
the ROI of such a venture
When was still considering moving to diesel...research found that the next gen
(now the current gen) would have very, very onerous smog controls. Within that,
the discussion of after burners, etc does do the trick on particulates, but the
gases formed were not easily controlled...back to particulate filters, etc
The CP4 has nothing nifty anymore and it's 'main' weakness if that the piston
rod is NOT captured on the cam (crank), nor piston bottom. Another, but not the
only other, weakness is that they used the diesel as the cam/follower/etc lube & coolant
So another piston like pump with a captured piston to rod to crank would be less
likely to have similar issues. A caged desmodromic setup would be way better
Going back to a supplemental port injector kinda sorta defeats one of the key
benefits of GDI and that is no fuel in the manifold...therefore higher
advance without detonation.
All of he papers read up till now, says GDICI works and am hopeful they will
do some work on larger displacement ICE's
Too many look to reduce displacement as the main means of increasing MPG with
a highly stressed, small displacement ICE. I like larger displacement
variable displacement and think the patents have been keeping others
away to stay with the small displacement, but highly stressed
There is yet, another particulate filter, but can't say anything more on that
till they announce. That will work for both gasser and diesel. Of course after
they file and have OEMs lined up for proto's
