Cyclone Power Technologies will showcase two automotive applications of its external combustion Green Revolution Engine (earlier post) at the upcoming SAE Commercial Vehicle Convention in Chicago. The company will display a 100 hp Automotive Engine and a 330 hp Truck Engine, which will be installed in a full truck chassis for the first time.
Cyclone’s engine is a multi-fuel capable engine that uses an external combustion chamber to heat a separate working fluid, de-ionized water, which expands to create mechanical energy by moving pistons or a turbine.
The engine’s combustion chamber creates a rotating flow that facilitates complete air and fuel mixing and complete combustion. Less heat is also released. Exhausted gases run through a heat exchanger before leaving the engine, lowering the temperature at release.
The company proposes a number of configurations of the engine, including small single-cylinder units; a two-cylinder opposed piston engine; and three-, four- and six-cylinder radial engines.
The company most recently concluded its testing with low octane gasoline. The design of Cyclone’s fuel injector, which works with a primary and secondary air source, maintained a low temperature flame front with an extremely clean burn, according to the company.
As a result of the low temperature burn of the gasoline, the Cyclone engine produced little or no NOx, and kept carbon monoxide levels at a minimum. Additionally, the cylindrical design of the engine’s combustion chamber effectively eliminated much of the unburnt hydrocarbons from the fuel source, according to the company.
Cyclone has also tested a bio-fuel, d-Limonene, made from orange peels; biodiesels produced from palm oil, cotton seed oil and chicken fat; and three grades of ethanol produced from corn.