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#131
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In article ,
Corky Scott wrote: On Wed, 13 Jul 2005 06:09:56 -0700, Smitty wrote: Imagine it's 150 years ago. (For you youngsters, that would put us way back in pre-internet days, when people conversed instead of pecking.) We're sitting around enjoying some refreshing non-alcoholic beverages and talking about various things. You'd have to back up a few more than 150 years to find a gathering where people are drinking non alcoholic beverages... Corky Scott Yes, well, this *is* a forum for pilots, and since we're all flying tomorrow, none of us are imbibing today. I guess you won't grant me poetic license to superimpose the present on the past, though. Fair enough. "Imagine we're sitting around talking, and getting blithering drunk..." |
#132
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#133
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mastic wrote:
"Sport Pilot" wrote: Here is an animated link showing the differances of the Otto and Diesel cycles. http://www.ulb.ac.be/sma/testcenter/...osedcycle.html Notice the near instant burning in the example gives very nearly a constant volume, in actual practice some compression is going on at this time. Also during a Diesel cycle it is hard to maintain a constant pressure, it would actually drop off, especially near the end of the down stroke. But both are still otto cycles. If you think the fuel burns instantly in a spark engine remove the exhaust manifold and run the engine, observe the flame exiting the exhaust port. Indeed, if it does burn "instantly", that is detonation. However, it burns more rapidly in a SI engine than in a true Diesel cycle Diesel. In fact, it is astonishing to me how fast one can turn even relatively large SI engines, such as Formula 1 car engines. Is there no limit :-) |
#134
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mastic wrote:
Otto cycle = four stroke, nothing to do with fuel injection, burn rates, phases of the moon or the flavor of ice cream. See http://en.wikipedia.org/wiki/Otto_cycle I thought the Otto cycle was supposed to have the power stroke be ideally completely adiabatic. |
#135
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1 On Sun, 17 Jul 2005 11:48:43 -0500, Don Stauffer wrote: it is astonishing to me how fast one can turn even relatively large SI engines, such as Formula 1 car engines. Is there no limit :-) http://www.petting-zoo.net/~deadbeef/archive/5304.html -----BEGIN PGP SIGNATURE----- Version: PGP 7.1 iQA/AwUBQtrsHQIk7T39FC4ZEQLjAQCgq7qm12b4/HGXpCXzGnA9WHXMVvsAnjWY 436Ko/4gHzu1LoLpHaJFjz6R =cDhj -----END PGP SIGNATURE----- -- -john wide-open at throttle dot info |
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