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sandia.gov: Ducted fuel injection promises cleaner combustion

https://www.sandia.gov/news/publicat...injection.html

Quote:

Nitrogen oxides are also atmospheric pollutants, and the soot/NOx trade-off meant that truck, car and equipment makers couldn’t meet current legislated limits without adding exhaust-gas aftertreatment systems. But remove one of those pollutants almost entirely — like DFI does with soot — and Chuck said you have changed the game.

“Now that we’ve got soot out of the way, there’s no more soot/NOx trade-off,” he said. “So we can add dilution — taking some of the engine exhaust and routing it back to the intake — to get rid of NOx without soot emissions becoming a problem. It’s like a two-for-one deal on reducing pollutants.”
....
Paul Miles, manager of Sandia’s engine research program, said the potential impact of DFI cannot be overstated.

“Breaking the soot/NOx trade-off is the holy grail of diesel engine development,” Paul said.

Need to explain that to the EPA, my VW has a massive coolant cooled EGR and still fails CA NOX.

So you live in exile in Reno?

EGR is a known thing, but I would like to see drawings of the injectors. My best guess is that it is a bypass that draws compressed cylinder air along with the fuel being injected. Pace Bernoulli.

It seemed quite confusing at first, but in the end it sounds promising

Sounds like the dollar store version of air blast fuel injection
If it works, great. I don't see any reason it wouldn't work.

Quote:

Originally Posted by oil pan 4 (Post 614639)

I don't see any reason it wouldn't work.

Neither do I, but since it was inspired in a propane-powered device it took me a while to understand how it could benefit the operation with heavy fuels.