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You will never see supercritical 450 degree fuel at diesel injection pressures mixed in any amount outside the combustion chamber. That is what transonic does and the combustion byproducts require no post combustion treatment to pass emissions.
Homogenous charge compression ignition without the need for a spark. Molecule by molecule evenly distributed in milliseconds, multiple injection pulses at peak combustion chamber pressures spreading out the "push" of expanison, allowing diesel high compression ratios and practically no currently regulated emissions to leave the combustion chamber and therefore no post treatment of exhaust emissions.
Billions have been spent in the pursuit of this goal and current and future emission regulations are irrelevant when they are not even close to a hurdle. They have come close, but the issue that came into prominence over 40 years ago and the solution will render any mileage requirements laughable.
The 60% efficient engine will become fact, even in displacements under .5 liter.
Gasoline powered cars under 3k in weight will achieve EPA ratings, not the ancient cafe ratings used in the requirements (mostly a joke), will get mileage in the 60-80 MPG rangewhen driven normally at 70 MPH with many accessories and their consequential power drains running as the are normally in almost every vehicle on US roads.
All of this does not even consider the 2006 statement by the EPA that mileage improvements of 80% will be achieved through powertrain improvemnets. This fact will increase fuel mileage, if implemented, above and beyond my prediction earlier in this post, with city mileages actually exceeding the highway prediction I just made.
With further aero improvements, if the manufacturers ever come to believe aero is beautiful and the brain washed publics thinking process is properly modified, then we will see, in my lifetime, cars averaging over 100 MPG easily, with no effort in that pursuit necessary by the driver of that car.
Come back in a decade and read that prediction and see how close I am to predicting the future, but you will never see it done while relying on air flow to accomplish that objective and if you ever came close you would be carrying a significant container of an explosive mixture, just waiting for an ignition source.
regards
Mech
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