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The very high firing frequency resulting from 24 combustions per revolution eliminates exhaust and intake noise. (http://www.regtech.com/ramcam.html)

http://www.cleanmpg.com/photos/data/501/RandCam_Engine.gifReg/Regi - Dec. 19, 2006

DESIGN
More powerful and fuel efficient than current reciprocating engines, yet less expensive to maintain.

SIMPLICITY
Only 2 moving parts, the vanes and the rotor - no pistons, valves, etc. - reducing assembly and maintenance costs.

POWER
Provides up to 24 power strokes per revolution. The stroke length of a reciprocating engine is approximately 3.5", and one power stroke is generated for every two revolutions. The Rand/Cam Engine has a stroke length of approximately 14", and its unique design provides 12 power strokes per revolution.

at 30% volume efficiency, compared to Wankel engine's 10% volume efficiency, compared to piston engine 7-8% volume efficiency.

COMPACT
Fully scalable, the 42 hp diesel engine version is only 6" in diameter by 6" long.

MULTI-FUELED
Ethanol, Natural Gas, Propane, Diesel and even Hydrogen Fuels including mixtures.

NOISE REDUCTION
High firing frequency resulting from 24 combustions per revolution virtually eliminates exhaust and intake noise.

___Thanks Randall.

Oooh. Shiny. Looks like a great engine to go along with an EV primary vehicle as the ICE "backup" generator.

A natural application would be in a future production version of the Aptera concept from accelerated composites. http://www.acceleratedcomposites.com/ The current concept has a "12Hp Carb Certified Diesel."

It would probably work well as an efficient portable power generator for construction sites and camping.