 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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| Demick |
Feb 28 2006, 09:06 PM
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Ernie made me do it! Group: Benefactors Posts: 2,312 Joined: 6-February 03 From: Pleasanton, CA Member No.: 257 |
It all depends on how much power you get out of the steam stroke. If you can get 1/2 the power of a regular power stroke out of the steam stroke, then you will have equivalent power for an equally sized 4 stroke engine.
But the purpose is not for more power out of a certain sized engine. It's about making use of the waste heat of the engine thereby increasing the overall efficiency of the engine. I think it is brilliant. Bet it runs like crap at startup though. Demick |
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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 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 
