06-14-2022, 02:34 PM
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#41 (permalink)
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Quote:
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...drop to 60hp and folks would get the bottle filled.
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36hp should be enough for anybody.
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06-14-2022, 07:08 PM
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#42 (permalink)
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Quote:
Originally Posted by oil pan 4
Don't care about the 1960s. Nothing internal combustion made then would come any where near being able to be sold today.
BMW appears to be using it to increase super charged performance.
The botch one doesn't say if it's for gas or diesel. Those stats, 5% more power, 4% less co2, 13% more fuel economy sounds exactly like running water injection on a diesel.
The only way a gas engine can benefit from water for fuel economy is if it was designed around it. Then the problem is you have to use water all the time and better make sure you run out of gas before you run out of water.
Still have to get it passed the epa.
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IIRC the BMW has a limp mode if it runs out of water so you can't hurt the engine. But it will affect power. And yes, the (gasoline) engine has to be designed to take advantage of water injection. Otherwise it's very likely to not work, although I do wonder about replacing some gasoline enrichment with water at WOT. That would be a good way to blow up an engine if something fails of course.
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06-14-2022, 07:22 PM
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#43 (permalink)
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Quote:
Originally Posted by Isaac Zachary
IIRC the BMW has a limp mode if it runs out of water so you can't hurt the engine. But it will affect power. And yes, the (gasoline) engine has to be designed to take advantage of water injection. Otherwise it's very likely to not work, although I do wonder about replacing some gasoline enrichment with water at WOT. That would be a good way to blow up an engine if something fails of course.
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With aftermarket engine management, it would be relatively easy to have a level sensor connected to an ECU input, and have that input's state trigger a change in fueling or ignition timing characteristics. |
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06-15-2022, 12:19 PM
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#44 (permalink)
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06-17-2022, 08:26 PM
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#45 (permalink)
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It's all about Diesel
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IIRC that water injection setup fitted to the BMW M4 GTS was intended exactly to be a better option than enriching the AFR.
Quote:
Originally Posted by freebeard
36hp should be enough for anybody.
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Not sure to which extent 36hp "should" be enough, but sometimes an even more minimalistic approach seems doable too. Remember the Citroën 2CV and the Méhari?  |
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06-28-2022, 10:52 AM
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#46 (permalink)
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Newbie on this area but modern ICE has all sort of "circulating" loops (PCV, EVAP etc.) to burn fumes / vapors again so basic system is already available...
Reading topic...
https://www.allpar.com/threads/fixin...ost-1085223155 |
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06-28-2022, 09:00 PM
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#47 (permalink)
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High Altitude Hybrid
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Quote:
Originally Posted by tomi_k
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True, but some of the gasoline going in to be burned is still liquid. Does boiling all of it to a gas before putting it into the cylinder help is the question.
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06-30-2022, 01:33 AM
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#48 (permalink)
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It's all about Diesel
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Quote:
Originally Posted by tomi_k
Newbie on this area but modern ICE has all sort of "circulating" loops (PCV, EVAP etc.) to burn fumes / vapors again so basic system is already available...
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Not exactly the same principle, considering the PCV takes vapour of the lube oil which has a considerably higher density than gasoline. Plus it takes some waste vapours, while an attempt to switch gasoline from liquid phase to vapour phase would be way more complicated to control. A more accurate comparison would be the vaporizer of some propane conversion kits, even though nowadays liquid phase propane injection has been fitted to some port-injection engines too. |
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06-30-2022, 08:55 PM
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#49 (permalink)
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Yes, PCV is connected to the engine oil "fumes" but principle is same.... intent is to re-circulate "fumes / vapor", not liquids (i.e. not oils)... EVAP is designed to re-circulate evaporated fuel from the gas tank... again, principle is same... re-circulating "fumes / vapors" back to engine intake manifold.
Anybody knows and/or have tested what happens if "fuel fumes" is increased in EVAP lines, what happens? Or generally speaking, if "fuel fumes" is increased engine intake manifold? Engine must a loop-back system to adjust air:fuel -ratio....
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07-01-2022, 10:53 AM
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#50 (permalink)
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High Altitude Hybrid
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Quote:
Originally Posted by tomi_k
Yes, PCV is connected to the engine oil "fumes" but principle is same.... intent is to re-circulate "fumes / vapor", not liquids (i.e. not oils)... EVAP is designed to re-circulate evaporated fuel from the gas tank... again, principle is same... re-circulating "fumes / vapors" back to engine intake manifold.
Anybody knows and/or have tested what happens if "fuel fumes" is increased in EVAP lines, what happens? Or generally speaking, if "fuel fumes" is increased engine intake manifold? Engine must a loop-back system to adjust air:fuel -ratio....
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But what if you take out the fuel injecction system entirely and try to run on just fumes?
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