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> OT: Interesting new idea, the six-stroke engine
lapuwali
post Feb 28 2006, 06:40 PM
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Crower (of Crower Cams) has just patented a new "six stroke" engine design. The crank turns 3 times for each single cam revolution. The extra two piston strokes are after the normal exhaust stroke, and involve water direct injection into a closed cylinder. This flashes into steam, and produces a second power stroke. The exhaust then opens to vent the steam. Enough heat is drawn off by this steam production that no actual cooling system is required.

It's claimed this can improve fuel economy by as much as 40%.

He's got a single-cylinder spark-ignition prototype working, and is now working on a compression-ignition version.
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Andyrew
post Mar 1 2006, 02:41 AM
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windshield washer fluid... certain kind has a large percentage of alcohol... and is recommended by the company to use...
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Posts in this topic
lapuwali   OT: Interesting new idea   Feb 28 2006, 06:40 PM
Andyrew   Wow! But wouldnt that require a lot of water?   Feb 28 2006, 06:42 PM
Pugbug   Interesting idea. When water turns to steam it ex...   Feb 28 2006, 06:45 PM
wertygrog   You'd have to purge ALL of the water after ste...   Feb 28 2006, 08:10 PM
lapuwali     Feb 28 2006, 08:47 PM
Demick   It all depends on how much power you get out of th...   Feb 28 2006, 09:06 PM
messix   direct inject on fuel really lean should get comb...   Feb 28 2006, 09:13 PM
SGB   crower write-up James- this must be what you read...   Feb 28 2006, 09:27 PM
MattR     Feb 28 2006, 11:43 PM
Dr Evil     Feb 28 2006, 11:49 PM
Dr. Roger     Feb 28 2006, 11:49 PM
Aaron Cox     Feb 28 2006, 11:55 PM
MattR   <...   Mar 1 2006, 12:02 AM
Dr. Roger     Mar 1 2006, 12:03 AM
GeorgeRud   No matter if it works out or not, it sure is inter...   Mar 1 2006, 12:05 AM
LvSteveH   The trick to this whole thing is to change how you...   Mar 1 2006, 12:05 AM
Dr. Roger   and, matt, please don't tellme fuel vapor does...   Mar 1 2006, 12:32 AM
Porcharu   Here it is - It's F'ing brilliant! Usi...   Mar 1 2006, 12:34 AM
MattR     Mar 1 2006, 02:31 AM
johannes   Sounds like a brilliant idea to increase efficienc...   Mar 1 2006, 03:09 AM
Porcharu     Mar 1 2006, 03:53 AM
guiltless     Mar 1 2006, 04:05 AM
Porcharu   ...   Mar 1 2006, 04:11 AM
Porcharu     Mar 1 2006, 04:27 AM
redshift   The vast expanses of the universe are negatively c...   Mar 1 2006, 05:04 AM
bd1308   <...   Mar 1 2006, 06:21 AM
ClayPerrine   It sounds like a good idea, but I am not an engine...   Mar 1 2006, 06:52 AM
Dead Air   I'm NO engineer, but for atomized fuel to burn...   Mar 1 2006, 07:16 AM
lapuwali   <...   Mar 1 2006, 10:02 AM
MattR   ...   Mar 1 2006, 12:20 PM
MattR   <...   Mar 1 2006, 12:24 PM
lapuwali   Exhaust gas temps are typically in the range of 12...   Mar 1 2006, 02:03 PM
MattR   And I dont see why it would have to run a high pre...   Mar 3 2006, 09:58 PM
Rand   There is an interesting article in the latest Car ...   Mar 3 2006, 10:02 PM
pek771   Did Crower patent this? I'd like to see the ab...   Mar 3 2006, 10:15 PM
lapuwali   I don't know where to look up the expansion ti...   Mar 3 2006, 10:18 PM
alpha434   Ok. So from my understanding. And correct me if an...   Mar 3 2006, 10:57 PM
pek771   Yeah, but you have to examine a Mollier diagram of...   Mar 3 2006, 10:59 PM
alpha434     Mar 3 2006, 11:05 PM
Porcharu     Mar 4 2006, 01:18 AM
alpha434   <...   Mar 4 2006, 01:45 AM
TimT   Isnt there a 6 stroke engine out there already? in...   Mar 4 2006, 02:02 AM

 

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