Mitsu MDI

[Tony Cooper]

Frederic Breitwieser wrote:
> 
> >economy but not really power, I think. Does anyone know the mechanics of
> >the Mitsubishi GDI(gasoline direct injection)series engines combine
> >incredible
> >economy and power?
> 
> Hey Ross,
> 
> A recent article in Turbo and High-Tech Performance explained how the new
> GDI (not MDI like in my subject header <Grin>) works, and seemingly, it
> works very well both from a performance standpoint as well as emissions.  I
> can post some of the supporting text when I get home to the magazine if
> anyone wants...  Its a long-ass article, probably way to long for this list.
> 
> But in a nutshell - they run the engine extremely lean (40:1 - 50:1
> air-fuel) during idle and cruise, with all sorts of neat gizmos to manage
> that.  At WOT, obviously it comes down to the normal 12:1 range.
> 
> By injecting the fuel directly into the cylinder, the system shoves the
> little bit of fuel (in lean mode) right in front of the spark plug, so
> immediately in front of the spark, its not overly lean, but rather close to
> a stioch mixture (14-15:1 or so).  The rest of the air in the cylinder is
> not really part of the combustion process, but more of a "air cushion"
> surrounding the explosion.
> 
> My analogies are horrible, I know.
> 
> Frederic Breitwieser
> Bridgeport, CT 06606
> http://www.xephic.dynip.com/
> 
> 1993 Supercharged Lincoln Continental
> 1989 4-Door Softtop Humvee (Hummer)
> 2000 Buick GTP (Mid-engine track car)
> 
> ---

I would be interested if you would be so kind as to type it all in.....
Tony
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Sent By Tony Cooper.
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