I let Francois tell you the details (....as I don't know them :))),

but what

I understand is, that Mistral wants to certify a Jet A burning

version of

their Rotaries. It is NOT a Diesel engine per definition, as in

compression

ignition, but a spark ignited, diesel (or Jet A) direct injected

engine.

Just went of the Audi website, looking at their Le Mans Quattro

concept.

This engine also uses direct injection, though I guess it is

adjusted for

gasoline.

In the past Mistral had problems with fouling sparkplugs (after

some 200

hrs), but what the heck, make it a service/inspection point for 100

hrs to

check/clean/change sparkplugs! At least in Europe you will save a

set of

sparkplugs on the first tank full off Jet A compared to Avgas!

I believe you could adapt just about any gasoline engine to burn

Diesel this

way. All you need is a high pressure injector pump and a place to

install

the injector. The rest is dyno runs to adjust the system. With some
computers added it should eve nbe able to burn ANY liquid fuel!

Thomas J.  :)

Yes or gaseous fuel.  I think Mazda did some experiments with diesel

way

back when.  Now with new research Renesis engine they have direct

ports

(look at the 11:00 o'clock position near the front of casing) in the
combustion chamber into which they inject hydrogen gas.

The front view placards show the upper injector to be for hydrogen,

the

lower left one for gasoline.  The location for diesel injection ????

Maybe

diesel would benefit from being  prewarmed a little.

BTW. The engine pictured below is a hybrid.  The middle section just

in

front of the transmission contains the electric motor.

Check out the electric boost motor sandwiched between the turbine and

the

compressor.  This engine is designed for near zero pollution and good
mileage.  Perhaps when fuel cells, batteries and hydrogen storage get

and

more compact  we will be calculating range using miles per kW/hrs:)

Until

then our best bet is the rotary.

Doug F.

That looks exactly like the same display Mazda had at the Geneva auto
show. Where
you in Geneva Doug?

Paul Lamar


Just want to set 2 things straight:

1. MISTRAL did NOT have problems with fouling spark plugs when running
on Jet A or diesel fuel, Rotary Power International from New Jersey had.
They were using standard plugs and a standard inductive ignition system.
MISTRAL will be using a new, high-energy ignition system for its future
jet-fuelled engines.  This system entirely solves the problem of carbon
fouling of the spark plugs altogether.  As a matter of fact, we
anticipate min. 1,000 hours lifetime for the spark plugs, with NO
maintenance in between changes.

2. Volkswagen among others is experimenting with a low-compression (14
compression ratio) diesel engine.  This engine is spark ignited when
cold, then compression ignited when hot.  It is kind of bridging the gap
between regular piston engines and diesels.  However, gasoline powered
piston engines cannot be made to burn diesel fuel or Jet A simply by
changing the injectors and the fuel pump.  They can't... unless you
almost totally redesign them... probably into something that looks like
this prototype Volkswagen engine.

Francois badoux

Francois I was wondering if you will be using a turbo charging when the
rotary is set up for burning diesel fluid?

Doug (in Japan)

 
The Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2004 All world wide rights reserved.