Look For The Power LLC

U.S. Patent Pending

The common 4-stroke engine (intake, compression, power, and exhaust) gets the job done, albeit with great inefficiencies regarding reciprocating mass.  Walking by taking one powerful step forward, followed by 3 smaller steps backward, also works, albeit with similar great inefficiency.​  Of the 4 strokes, only one produces power (the power stroke), while the other 3 are drags on the power produced.  And, the strokes reciprocate.  That is, they move in opposite directions.  So a piston moves violently in one direction (the power stroke), then reverses direction 180° for the exhaust stroke, then reverses 180° again for the intake stroke, then once again reverses direction 180° for the compression stroke.  This is extremely inefficient.

The Wankel rotary engine was an attempt to produce intermittent combustion WITH rotary motion, and WITHOUT the inherent inefficiencies of  4  reciprocating strokes.  This held great promise during the 1980's, with Mazda leading the way.  However, there were problems, largely centered on the 3-lobed rotor, the eccentric combustion chamber, and the seals between them.  Today, there is no commercial production of a rotary, internal combustion engine.

Below, you will see a sketch of an internal combustion engine, utilizing intermittent combustion (as opposed to continuous combustion like a jet engine), producing rotary motion.  Apart from the compressor, it has a single moving part, the rotor.