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- Newsgroups: rec.autos
- Path: sparky!uunet!stanford.edu!ames!purdue!mentor.cc.purdue.edu!mshar
- From: mshar@mentor.cc.purdue.edu (Mike Mshar)
- Subject: Re: Rotary vs. Piston Engines
- Message-ID: <BxAyzB.842@mentor.cc.purdue.edu>
- Organization: Purdue University Computing Center
- References: <92309.094205KXN2@psuvm.psu.edu> <Bx7KG5.90t@mentor.cc.purdue.edu> <antkasx.720933737@gsusgi1.gsu.edu>
- Date: Fri, 6 Nov 1992 16:25:58 GMT
- Lines: 26
-
- > antkasx@gsusgi2.gsu.edu (Ken A. Sturrock) writes:
-
- >As I'm really ignorant about pistons:
- >How does the piston's movement in a piston engine prevent oil from
- >burning in the combustion chamber?
-
- Well, very simply, it goes like this.
-
- As the piston moves upward, the rings (specifically the oil control ring)
- push a film of oil along with the piston as it travels up the cylinder.
- After it reaches top dead center, the piston starts travelling back down.
- When this happens, the rings scrape the oil off of the cylinder walls as
- the piston decends, so that a minimal amount of oil is lost in the
- combustion chamber. I couldn't really say what the exact mechanics of the
- rings and oil interactions are, but basically this is how it is done.
-
- Anyway, that is why I could not figure out how rotaries kept oil out of the
- combustion chamber. There is no motion that opposes oil flow into the
- engine, so how is the oil kept from getting in there? That was my question.
-
-
- --
- | Michael G. Mshar | My Life-Long Goal: To keep common sense |
- | mmshar@mn.ecn.purdue.edu | alive and keep the idiots from taking over.|
- | mshar@mentor.cc.purdue.edu | \\President, Nice Guys Anonymous// |
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