>>

http://www.autoweek.com/apps/pbcs.dll/article?AID=/20060316/FREE/

>> 60313013/1041/THISWEEKSISSUE
>>
>>
>>
>> I ran across this article dated 3/13/06 while
browsing the AutoWeek web
>> site today.  Could be that direct injection is
coming of age and we can
>> finally get the needed parts that would work on
the rotary.  They don’t
>> give any technical information, so I guess we
just stay tuned for
>> further details.
>>
>>
>> Mark Steitle
>>
>> Don't get your expectations set too high. Nobody
has got direct >> injection
>> to work very well on the rotary yet. If and when
Mazda does it >> successfully
>> I will become a bit more optimistic.
>>
>> Paul Lamar
>
> They direct inject the hydrogen (Mazda), and also
the four banger they
> use in the Mazda 3, 6, & 5.  Do you realize that
they have a detuned
> version of the 2.3 Mazdaspeed turbo engine in the
3 now?  250 HP in a
> little Mazda 3!
>
> I think that they will direct inject the 16B.
>
> Hans
>
> We will see. Hydrogen is one thing gasoline
another.
> They had to direct inject hydrogen as they is the
only way to
> get enough in there to generate any HP at all. As
it is.. it is half
> the HP of the gasoline version.
>
> Paul Lamar ...No rotor no motor.
>
>
> A turbo 3 . I, missed that one, its in the
showrooms now?--
>
> Clifton
>
> Not yet.
>
> Paul Lamar
>

What specifically is it that makes direct injection
so difficult to apply?
High inlet pressures for the injection?  Difficulty
in controlling the wave
front of the combustion across the rotor face?

George Wright

Curtis Wright, John Deere and RPI fooled around with
it for 30 or 40 years
and wound up with the same BSFC we are getting with
EFI. Tracy Crook
came up the the naturally stratified charge theory
wherein the rotating
combustion chamber throws the rich mixture out
towards the spark
plugs anyway so why have direct injection?  Piston
engine development
is of no use due to the rotating combustion chamber.
Perhaps it will
cool the charge a bit so a higher compression ratio
can be used with a turbo charger.

That would seam to be the real value of direct
injection. You could run what would have been
considered unworkable high compression ratios on
Mogas, 100LL, Diesel and Jet-A. The only thing you
would need to change is the injection and ignition
timing. That’s the one aspect Curtis Wright, John
Deere and RPI could not do.

Erik

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