Article: Ultra-Efficient Gas Engine Passes Test
Hello -
While reading DIM's thread I stumbled on this : Technology Review: Ultra-Efficient Gas Engine Passes Test Quote:
Here's the company : Transonic Combustion | Ultra-high Efficiency Fuel Injection Systems CarloSW2 |
I wonder how hot and how much pressure it takes to make a difference? and how much heat can conventional injectors handle without damage?
Seems like it would be easy to heat the fuel with the exhaust, electric fuel pumps are available for 100+ PSI but re-tuning the ECU would be the real work involved but even that can be done. |
color me sceptical -
since the mass of the fuel is about 1/15th the mass of the air
in the air fuel mixture prior to combustion it would seem that air temperature would be far more critical and have a much Larger impact than fuel temperature and there has been no small amount of testing and experimentation regarding WAI which does NOT yield similar test results claimed by this company .... |
Gotta say, I just checked out the Board of Directors.....Robert Lutz just got on and Ray Rothrock (who has a VERY impressive Venture Capital background) is also on.
This is no Telsar Motors. |
Oh please :rolleyes:
50+%?!? How complete is the combustion event now? 99%? |
Yeah, I suspect that increasing by 50% means that they decreased what is not completely burned by 50% -- so it went from 99% to 99.5%?
|
A big problem with leaning out the fuel air mix is getting a complete burn, that is why Honda's CVCC engine of the early '80's got better mileage is the rich mix that was needed for ignition was next to the spark plug, the rest of the combustion chamber was a very lean mix that would otherwise not ignite from a spark and the over all mix was leaner then normal.
I think it's the same idea as direct injection, have the fuel ignite without fully depending on a spark. |
They are talking about engine efficiency, not burn efficiency.
A few things to note: 1. its direct injection. 2. uses compression ignition 3. No throttle plate (lean burn) 4. They are still not sure of long term durability 5. Gassoline at temperatures and pressures to be in a super critical state is a little scary. |
Oh- HCCI or some variant thereof?
Homogeneous charge compression ignition - Wikipedia, the free encyclopedia |
Sooooo........
They took a diesel, Lowered the compression, And fed it gasoline........ Hasn't this been tried many times before??? Maybe with new 3D fuel map computers it will work this time. |
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