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- Path: sparky!uunet!spool.mu.edu!news.nd.edu!bsu-cs!bsu-ucs.uucp!01crmeyer
- From: 01crmeyer@leo.bsuvc.bsu.edu (Craig Meyer)
- Newsgroups: sci.energy
- Subject: Specs on GM SE 101 and 124 steam engines
- Message-ID: <1992Nov19.175743.12122@bsu-ucs>
- Date: 19 Nov 92 22:57:43 GMT
- Organization: Ball State University, Muncie, In - Univ. Computing Svc's
- Lines: 50
-
- I figured some of you might want to know more about the engine used in the
- GM SE 101 steam car:
-
- Four cylanders displacing 101 cubic inches, and developed 160hp.
- 1.6 hp/lb!
-
- It had a camshaft/rocker arm system to open and close the intake valves
- One valve per cylander
-
- Halfway down the cylander wall it had exhaust ports.
-
- However, it was NOT double-acting.
-
- Yet, it used the standard steam-engine mechanical setup, consisting of a
- piston, packing, a crosshead, and connecting rod.
-
- If the system wasn't double-acting, is the piston/crosshead duo needed?
- Why not have the piston connected directly to the connecting rod?
- If the engine was double-acting, then the crankcase would be flooded with
- steam when the piston was pushed up. But the GM car wasn't double-acting, so
- what's the point, eh?
-
- Is the packing needed to prevent steam leakage anyway?
- Couldn't the piston's rings do just as well?
-
- But all piston rings have a gap, eh?
- Would leak through the gaps?
-
- ----------------------------------------------------------------
- Also in the book is a diagram of the GM SE 124 steam car. Its engine is very
- small--but the system is still huge because of the boiler.
-
- It had only two pistons--a high pressure piston and a larger low pressure
- piston.
-
- The whole engine was about as big as the transmission.
-
- Whatever kind of valvetrain it had, it isn't overhead. Sliding-valve?
-
- Fascinating, Captain...
-
- CM
-
- --
- Craig Meyer 01CRMEYER@LEO.BSUVC.BSU.EDU
- Indiana Academy for Science, Mathematics, and Humaities.
- Muncie, IN 47306 317-285-7433
-
- Opinions expressed are mine alone, and not necessarily
- shared by the Indiana Academy.
-