I just invented a new wankel rotary engine configuration designed to
drastically improve the MPG of rotary engine powered cars. It uses the

principle

of cylinder deactivation now popular on V8 engines used by Daimler

Chrysler

and others. The drawback of cylinder deactivation is the dead cylinders
are still reciprocating generating friction and absorbing some  HP from
the active cylinders. Never the less cylinder deactivation does result
in better MPG numbers.

Deactivating one rotor of a conventional two rotor engine results
in a very rough running engine.

This invention consist of a completely balanced stand alone one rotor

engine

combined with a stand alone two rotor engine. Unlike piston engine

configurations

rotary engines are always in complete balance. This configuration requires
one more balance weight than an equivalent conventional three rotor

engine.

All three rotors share cooling and oil lubricating systems to maintain
a uniform temperature throughout.

The resulting three rotor engine avoids the deactivation drawback by

stopping

two of the front rotors during steady highway cruise and slow speed
stop and go driving. Only the one rotor engine generates power in this
mode thereby reaping the BSFC advantages of a small one rotor engine

closely

matched to the road load. When acceleration or hill climbing ability is

required

the front two rotors automatically start up and feed their power through
the one rotor shaft by way of a over running clutch and then back into the
transmission.

This engine has many of the MPG and emissions advantages of the hybrid
without the hybrid's cost and weight of electric motors and batteries.

If a similar scheme were attempted on a V8 or V6 piston engine the

resulting

V twin would be unbalanced and vibrate strongly.

Paul Lamar

-Paul Carey wrote:

Paul

3 rotor engines fire every 120 degrees, not every 180 like 2 rotors. How
would you phase the single rotor to the two rotor?

Regards PC

Paul Carey LAME MC
Aero Group Pty Ltd
P.O.Box 119, Maylands WA 6931
Ph (08) 9371 5205  Fax: (08) 9371 9644  Mob: 0418 959 892
www.aeromanagement.com.au

You would not need to phase the one rotor with the two rotor as they 
are independently balanced. True the torque pulses are random but that
should only be a factor for the transmission. A torque converter or
heavy flywheel will smooth that nicely.

Paul Lamar
 
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