Subject: New 16b
From: Rotary Engine
Date: 10/11/2007, 9:24 AM
To: AARotary Engine



    > Yes the show runs for several weeks. I will definitely be there with
    > pen,
    > paper and camera in hand. I'll go twice if need be to speak with the
    > 'right'
    > guys.
    >
    > Everyone please get your list of questions ready.
    >
    > Hmmmmm ... just yesterday I decided that with a one half Lemans style
    > engine, injecting fuel after the P port closed would be counter
    > productive
    > as the compression ratio would decrease encountering the cavity the
    > injectors reside in.
    >
    > Perhaps I should have waited a day huh?:) It just goes to show
   that the
    > more I study about the rotary engine the less I seem to know:(
    >
    > I have heard from sources over here that the engine will run on
    > gasoline or
    > hydrogen. I suspect but haven't confirmed, the engine is set up to
    > run on
    > E-85 as well. I would make sense. The engine in the picture appears
    > peppered with injectors. My guess is as follows. It looks like a
    > (green)
    > fuel injector on the left shooting into the side port, an oil
   injector
    > above that, two hydrogen injectors at 11:00 o'clock and the high
    > pressure
    > direct injector at 12:00 o'clock.
    >
    > With a small turbo this baby could clear 300Hp easily. Manifold
   may not
    > clear the cowling though.
    >
    > Doug in Japan
    >
    > Doug you forgot one thing about direct injection. The hole can be
   very
    > small. The material truly injected after the port closing will
   make up
    > for any loss caused by the hole! A little interesting aside, when
   I was
    > checking on the Orbital air assisted (semi) direct injection. They
    > mentioned that several sanctioning bodies wouldn't allow the Orbital
    > injection because they considered it a minor form of supercharging!
    > Bill Jepson
    >
    >
   Bill,

   That is interesting. I wonder why with the Leman why they didn't
   angle the
   injectors straight into housings. They could have moved the slide
   throttle
   much closer to the housing then.

   I could agree with you if we use the standard Mazda type of injector
   because they can be mounted very close to the inner wall and for all
   intensive purposes be flush and shoot through a sealed 2mm dia hole..

   In the last few days I have come across the ethanol compatible
   Multec 3.5
   injectors from Delphi. If you download the PDF you can see what
   concerns me.

   http://tinyurl.com/yr7j2p

   There seems to be a depression about 4mm deep and 12mm in diameter. Even
   placing a donut spacer in the bottom of the hole would result in a
   5mm by
   4mm deep volume. Would two of them make a difference in lowering the
   compression?

   http://tinyurl.com/yr7j2p

   Doug in Japan


   That URL did not work Doug.

   Paul Lamar

   Here it is,
   https://delphi.com/shared/pdf/ppd/pwrtrn/gas_multec_mpfi.pdf

Erik Wahlstrom


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