Miata Mailing List: March 1995, Message #118
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   From: BILL.ALLEN@metrokc.gov
Subject: Re: Miller Cycle
   Date: Thu, 2 Mar 1995 12:53:02 -0500

Piet,
The Miller cycle engine is not a 5-stroke engine.  It's a Mazda offering on
their Millenia sedan.  That engine is a supercharged V-6.  The Miller cycle
consists of delaying the closure of the intake valves well into the compression
stroke.  The supercharger keeps the pressure up so the charge is not lost.  The
effect of all this is more power with good fuel efficiency.  The Mazda blower
is a Lysholm screw-type compressor.  There, I've told you more than I know.  It
all sounds like such a good deal, I don't know why there aren't more engines of
this type.  Probably cost.
Bill Allen