Cyclone Power to Showcase External Combustion Engine at SAE Event
20 September 2007
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.
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