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- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!olivea!gossip.pyramid.com!pyramid!lstowell
- From: lstowell@pyrnova.mis.pyramid.com (Lon Stowell)
- Newsgroups: rec.autos
- Subject: Re: Rotary vs. Piston Engines
- Message-ID: <184140@pyramid.pyramid.com>
- Date: 5 Nov 92 19:54:22 GMT
- Sender: daemon@pyramid.pyramid.com
- Reply-To: lstowell@pyrnova.pyramid.com (Lon Stowell)
- Organization: Pyramid Technology Corp., Mountain View, CA
- Lines: 25
-
- In article <Nov05.024257.67708@yuma.ACNS.ColoState.EDU> cc433336@LANCE.ColoState.Edu (Constantinos A. Caroutas) writes:
- >>For one reason, the Wankel engines achieve very poor gas mileage.
- >
- >Not any more, it seems.
- >
- Since when? The rotaries still give "much less than optimal"
- mileage compare to similar cars with equivalent power.
-
- >>Something to do with compressed/noncompressed ratios. My Mazda RX2 got
- >>11mpg (automatic). Sure was smooth, though. And ***fast***>
- >
- >One of the main problems was fuel sticking to the inner walls because it
- >does not get burned (it gets exhausted causing an emission problem). The
- >inner wall area over displacement ratio of a rotary engine is higher than
- >that of a piston engine.
-
- Has a slight advantage in catalyst equipped cars, the exhaust is
- already a bit rich, and doesn't need any extra in order to light
- off the convertor.
-
- But I know of no one claiming decent gas mileage on a RX-7 in
- any model year...compared to similar other sports cars of about
- the same performance.
-
- I usually mumble a lot when asked... >:-)
-