OK I think this is the gist of it.
Remains to be seen Hans if the BSFC will be as good as the current 4 stroke.
Probably much worse due to incomplete scavenging.

Should take about 100 million to develop it :-)

I would not bother unless you want to spend the rest of your life.

Paul Lamar

"If on the other hand, one were to rotate either the crankshaft or the housing and have the housing or the crankshaft operably attached to a compressor, a source of
compressed air could be produced. Such compressed air could be introduced into the engine and serve as an intake charging means. The raised air pressure would also
serve to force the exhaust gases out of the chamber if the intake and exhaust ports were properly designed. Additionally, such a source of compressed air, while
providing a source of pressure in order to maintain the proper flow of gases in a two stroke cycle engine, could also provide some cooling bypass air if properly ducted.

The instant invention thus provides a two stroke Wankel type rotary engine having a source of compressed air. If a compressor were to be driven externally of the
engine to provide the necessary pressure to operate the two stroke Wankel engine, then even the type of engine having a stationary epitrochoidal housing and moving
crankshaft could be employed.

snips..

Very few devices in the known art relate to two stroke rotary engines and none known are directed to two stroke Wankel type rotary internal combustion engines with
intake ports on one side wall and exhaust ports on the other side wall of the housing. Also no known devices relate to such engines providing a source of compressed
air which is used as scavenging intake air as well as for cooling bypass air."

Paul, I think you miss the point, the device to compress the intake charge and provide the cooling bypass air is a turbine.  Same with extraction.  One on each end.  This engine is like a turbine engine with all but the first and last stages replaced by the rotor.  I haven't seen it run yet, but Marty does have a prototype that runs when you feed it compressed air.

Rotating the housing instead of the shaft eliminates the bending moments on the shaft and makes for very high RPM potential.  One trick is how to fire the plugs as they spin by.

As far as developing it, its a long shot for sure, but I wouldn't put anything past Marty, he is an amazing person, not just a theory person but very practical and hands on.  You should see his collection of cars.  Everything from an NSU wankel to model A's, T's a plethora of RX-7's and a Stanley Steamer.  All bought not running and he gets them going.  He has said that he may take a year and just work on just two stroke wankel project once he has a housing without exhaust ports.

Anyway, my $.02.

I am looking to pay for the design/engineering work on my project spring 2003, and build the prototype over winter and start testing 2004.

Hans

 
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