George Lendich wrote:


Bill J,
I have an answer from Ken Johnsen of Orbital Engines.
There is no specific unit developed for Rotaries but they have had many

requests for one.

They only do development work for clients, they don't manufacture the

units themselves.

Yes Mercury is one of their clients so too is English and Israeli

military,

They have developed units for 200 hp using one injector (petrol) - no

problem with idle.

Ken feels an aftermarket ECU would/could run the DI - certainly Tracy

could easily develop one ( just another development project).

Ken mentioned placement and injector nozzle shrouding ( because of the

rotary apex seal) as being development issues.

Ken is sending some info I will pass on.

OH he also asked if I knew of anyone supplying good quality cheap
ECU for his own personal project - it would seem the $150,000

development

costs and expensive ECU $4,000 is a little steep for his pocket as well.

I told him Tracy might do it, but he needs a O2 sensor.

BTW they have developed kero burning( Jet A) DI and ECU for some of

their

clients - no problem. Has anyone got access to the British and Israeli
military?

George (own under)

François Badoux wrote:

Hi George,

Mistral will supply its Digital Engine Management (DEM) system) to
non-directly competing engine manufacturers (the definition of

non-competing

being determined on a case by case basis).  An OEM price has not been
determined yet but it will be below the USD 4,000 you mentioned below...
with no development costs (except for a special application).  The DEM
system was developed to run up to 3-rotor engines, as well as piston

engines

up to 6 cylinders.  It can relatively easily be modified to run bigger
engines. It can run either indirectly injected gasoline engines, as well

as

directly injected kerosene burners.  I attach a relatively detailed

document

presenting our DEM system as well as its specs (soon to be found on our
website which, BTW, will be updated before the end of the week).  I

welcome

(constructive) comments as a few of these specs can still be modified

before

we launch pre-production in 2-3 weeks.

Cheers,  Francois

Francois sent a .doc file too large to publish. Here is the introduction.

" The Digital Engine Management (DEM) system is a dual-channel, fully
redundant unit. This powerful unit is capable of  precise control of
multi-rotor engines and is readily adaptable to reciprocating engines as
well. Stylized aircraft installation is shown in Illustration II.
Two Electronic Control Units (ECU) interactively manage all engine
parameters (injection, ignition, wastegate management on turbocharged
engines, etc) in real-time for optimal engine management.  A single ECU can
assume full engine control, offering complete system redundancy. Pilot
interface is accomplished through a crisp, sunlight-readable display unit."

How about a link on you web site where this .doc file can be found Francois?

Paul Lamar

It's coming up on the website before the end of the week.  I wanted you guys
to have knowledge of it ahead of everybody...

Francois

OK here are a few other screen captures from the .doc file.

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