Don Dunbar wrote:

The concept for a diesel fueled rotary has been in my mind for some time but
not for the aircraft industry. I believe that the concept has a major
potential in the marine industry.
I own a large aluminum shipyard in Western Australia that uses many types of
high speed diesels. this is where my interest lay.
In Australia diesel now cost 95 cent's a litre and gas is around 3 cent's
cheaper, there is no need to use diesel in a vehicle or airplane. As
government pressure is on car fuel this will always be the case.
If the small 300cc engine produces 25 hp then a 13b could produce 108 hp
without turbo and inter cooling.
Paul is there any more information on fueling the rotary with diesel.
Regards Don Dunbar

That was 300 cc per rotor Don. I think you would do better with a direct
injection 13B running on diesel fuel. More like 150 HP.

BTW Wankel GmbH was claiming a BSFC of .47 for that engine.
Compared to a true diesel engine the compression ratio
is much lower so the BSFC is not nearly as good.

We have a company here in the states already building 13B based engines
for Marine use. Jon Lauter's Rotary Powered Marine.
http://www.rotarymarine.com/ Not running on diesel fuel however.

There are a bunch of SAE papers done by Curtiss Wright and others
on stratified charge over the years starting way back in the
60's. See the ACRE NL web site for a list of technical papers.
http://home.earthlink.net/~rotaryeng/

Paul Lamar

Kenneth Burgh wrote:

I am interested in powering generators and water pumps on my farm. The rotary
diesel might be very good. Exactly would I set up an old Mazda rotrary?
Thanks
Ken Burch

I don't exactly know Ken. Looks like a real expensive R&D project requiring
a pretty good machine shop and a dyno for testing. Get a copy of SAE paper
950452 High Speed Electronic Fuel Injection for Direct Injected Rotary
Engine and start from there. This was a stratified charge paper but there is a lot
of practical information about injection pumps both electronic and mechanical.

Wankel GmbH proved you don't need to go stratified charge to burn diesel fuel.
Direct injection, turbo charger and a spark plug work fine. I suspect the
turbo charger added a bit of necessary heat to the air charge as well as
effectively increasing the compression ratio.

Also contact Bosche for their camshaft  driven unit injectors catalog. 
These, I think, were used by Wankel. 

Another approach is do a patent search on the web for the work that Wankel
did on this subject.

If you get it working a bunch of people would like to know how you did it.

Paul Lamar
 
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