Quote:
Originally Posted by oil pan 4
In a direct injection diesel, like what's been sold for at least the last 20 years the fuel burns as soon as it leaves the tip of the injector. There is no point during operation that the fuel should come anywhere near the cylinder wall.
On a direct injection diesel the fuel injects effectively at tip dead center and it injects into a pocket in a piston.
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A good point.
Yet there the unburned HCs and CO are...
Perhaps the squish area causing turbulence at TDC gets the HC all over the place.
Quote:
Originally Posted by oil pan 4
Gasoline hydrogen mixtures in a gasoline engine has already been tested.
It was already testes in this peer reviewed paper.
It took a lot of hydrogen to give even a 3% fuel economy increase. A $100 bottle of hydrogen would last about 4 hours, assuming you owned that bottle and we're just having it filled for $100.
https://ntrs.nasa.gov/api/citations/...9770016170.pdf |
Another good point oil pan.
Yet there are a good many other papers that have a different opinion.
I cant see the O2 making that much of a difference.. Perhaps with lean burn engines.?
So here's a theory:
These HHO cells often tend to be hot, steamy things.
That steam condenses to mist (what see and call steam) pretty fast.
Then I was surprised to lean that no matter how hot the water; when it's evaporated into air (endothermic reaction) you always end up with cooler air.
Just with more vapour in it.
That means denser intake air and hence a tad more O2.
(EFI/ignition systems also pic up on temperatures and adjust fuel and timing..)
During Compression; The boiling point of water increases with pressure. So the remaining mist will largely remain water. Ever hotter water, but water.
During combustion that water will boil, resulting in a 1800x increase in volume. ie: A bit of steam power, with lower temps and NOx.
Then there's the Thermolysis of water at ~2200 C to consider.
Here water disassociates into hydrogen and oxygen due to heat alone.
That's a temperature reached during combustion. Especially if there's a bit of H2 and extra O2 around.
Add to that the fact that both red hot carbon and HCs combine with steam to form H2 and CO (burnable) at well below combustion temperatures and all of a sudden it seems possible that more H2 is made than even the HHO nuts realise..!?
So ye, the maths doesn't work... or, on second thoughts; does it..??
Its one of those things I cant just write off without trying. Especially when there's so much waste heat and momentum etc going to waste that can be used here, rather than just engine-alternator...