2-stroke diesel is the (near) future?

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..."

Originally Posted by Smitty

In article ,
Fisherman wrote:


Here here! (Not "hear hear" idiots.) I can't believe I read that the
other day on studentpilot.com.


Uh, actually, "hear hear" is correct.

Hmmm... Okee dokee then. Never mind... At least get these right; "to, too and two", "there and their", etc. There are lawts mower.

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 :-)

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.

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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


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--
-john
wide-open at throttle dot info