 OT: Interesting new idea, the six-stroke engine |
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| lapuwali |
 Feb 28 2006, 06:40 PM
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Not another one!  Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743   |
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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| MattR |
Mar 1 2006, 12:20 PM
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Advanced Member Group: Members Posts: 3,279 Joined: 23-January 04 From: SF Bay Area Member No.: 1,589 Region Association: Northern California |
If its a closed system you have to deal with the heat somehow. This appears to be an open system though and consumes gas. I had it wrong the first time. This makes a little more sense now. Instead of the water circulating through the system and worrying about cooling and bringing the vapor back to liquid, you just expell the vapor. Makes sense. |
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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 
