11-03-2019, 01:07 PM
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#1 (permalink)
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Master EcoModder
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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.
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11-04-2019, 10:38 AM
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#2 (permalink)
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Somewhat crazed
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Need to explain that to the EPA, my VW has a massive coolant cooled EGR and still fails CA NOX.
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11-04-2019, 12:24 PM
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#3 (permalink)
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Master EcoModder
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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.
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01-08-2020, 12:06 AM
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#4 (permalink)
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It's all about Diesel
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It seemed quite confusing at first, but in the end it sounds promising
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01-08-2020, 12:18 AM
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#5 (permalink)
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Corporate imperialist
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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.
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01-08-2020, 12:36 AM
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#6 (permalink)
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It's all about Diesel
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Quote:
Originally Posted by oil pan 4
I don't see any reason it wouldn't work.
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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.
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