[Diy_efi] Mitsubishi engine

[dh at busb.com]

Cool!

I'm somewhat more impressed by these types of engine development that have
data and potential of success, as opposed to greenfire.

However, there does seem to be some hyperbole. It would seem that the piston
shape is to promote a high temperature spot on the piston to promote fuel
evaporation.  The Schlieren photo method does not include color, except for
the color of the source light.  So it may be assumed in the animation that
the white spray is fuel entering and that, combustion is the yellow portion.

Also, if you remember the EGR discussions of a couple of years ago, the EGR
reduces the maximum temperature of combustion.  I don't remember during
those discussions that anyone mentioning that the precombustion temperatures
were higher.  In the Mitsubishi engine the addition of 20% EGR (my guess)
would increase the charge temperature considerably.

It has always been true that the Carnot cycle of an OTTO engine would exceed
that of a diesel, but until now the method was lacking.

However, I believe that the catalytic converter is the key to the
performance of this engine.  Does anyone have a clue how it works?

dh

----- Original Message ----- 
From: "Gianmarco Rizzo (BE/EAS)" <gianmarco.rizzo at ericsson.com>
To: <diy_efi at diy-efi.org>
Sent: Monday, June 27, 2005 7:19 AM
Subject: RE: [Diy_efi] Link for greenfire spark plugs..., hydraulics


http://www.mitsubishi-motors.co.jp/inter/technology/GDI/page6.html


i found this on the internet

i reckon the greenfire plugs would surely achieve a stratified charge, but
in the wrong way...


i also think that while it might be possible to run an engine with these
plugs, it will surely be very tricky to start it, expecially when very cold


gm