2017.03.26

Hello Paul,

here is some "stuff" related to another way of "compounding" - perhaps
better (?) than dealing with the high rpm of turbo chargers ...

US8689764 > a patent by P+W, showing the influence of the arrangement of the
channels between working unit + expander

US8662052 > patent by David Garside with an expander with a 2 lobe rotor.
Calculations shall show a gain of ~ +20% in power + ~ 20% less fuel
consumption ...

Other patents of interest by Pratt + Whitney may be Wo2010047960 +
US20140020381 ...

I've added some screenshots from Freedom Motors / Moller, too. Ok, it's
advertising - but nevertheless nice to read ... ;-)

freedom_1 > comparison of VW + Rotapower: size, weight ...

freedom_2 > comparison of engine efficiency (2005 ?)

freedom_3 > comparison of engine types I.

freedom_4 > generators: size, weight ...

freedom_5 > comparison of engine types II.

freedom_6 > balance of friction (Mazda vs Moller)


The patent US4067300 by Toyota shows the potential of your idea with air
only in the T section ("flab of air"). Please, have a look at figure 4.
Unfortunately w/o exact values, but the trend is clear, even without
pressurized air ...

Let's remember the "space changes" during the power stroke ...
 > T section is getting smaller + smaller > the S/V ratio is getting worse +
worse. No good conditions for combustion, no matter what you're trying to
"direct" - for example - with an ignition device ...
 > the L section is "growing" + the S/V ratio will be improved with each
single degree ...

Please, view the screenshot "T_quenching.jpg" > only the light area in the
chamber is "burned gas" ...

"combustion.jpg" is another screenshot related to the "Trailing section
challenge" ... I think, burning of fuel, you've paid for, after ~ 90 degrees
will not add any power ... (?)

A combination of the "air injection" + a compound system would be very
interesting - but perhaps not cheap enough ...


At last a tip for Jose with the F+S carburetor problem: the friends of the
Hercules W 2000 are still active - see www.hercules-wankel-ig.de/ <http://www.hercules-wankel-ig.de/>. English
should be no problem to them (ig > InteressenGemeinschaft > ~ community of
interest) ...


With kindest regards

Franky / Frank Herfert

Moller is too much of a scam artist. Year after year he never produces
anything that works.


I like the Garside patent.


Paul Lamar

To Franky Herfert: thanks, I'm already a member of Hercules-Wankel-Ig, you can find me in the directory. My German language is currently A2 level, but I'm stuck there since my start, 1978, Wuerzburger DolmetscherSchule and Goethe Institute, last attempt, Linguarama, Koeln, 1986, I keep on...

Good season, regards,

Salut � Jose Gros-Aymerich

Madrid, Spain



The Rotary Engine free News Letter. Powered by Linux. If you want off
the list PLEASE let me know and I will remove  you.  ACRE NL web
site. http://www.rotaryeng.net You Tube http://tinyurl.com/beqqxas
Copyright 1998-2017 All world wide rights reserved.