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Directory:Cyclone Power Technologies Inc

Lasted edited by Andrew Munsey, updated on June 15, 2016 at 1:06 am.

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The Cyclone Engine is designed around the principles of an external combustion engine, to efficiently use any liquid or gaseous fuel and create more power and significantly less emissions than current gasoline or diesel powered internal combustion engines.

Schoell cycle engine is a cross between a Rankine, Diesel and Carnot cycle engine. Compact, scalable technology, expects to have a production prototype in around eight months, as of March, 2007. Applications will range from weed eaters to trains. It could also use concentrated solar as the input heat source.

The Cyclone answers the problems of size, complexity, and high pressure gasses that have kept the Stirling engine from becoming practical.

: "We feel like we're at the top of the heap." -- Harry Schoell, in radio There was an error working with the wiki: Code[1], March 17, 2007 in response to question about how this technology stacks up in relation to other engine designs that can replace the internal combustion engine.


Official Website




Environmental Advantages


Download (56 Min 13 Mb mp3) - On Mar 17, 2007, Congress:Founder:Sterling D. Allan conducted a one-hour, live interview with Harry Schoell, CEO of Cyclone Technologies. (

Stage of Development


Quoting from

Cyclone Technologies has completed its initial research and design of the engine, and has already successfully bench-tested single and twin cylinder engines in the smaller power range.

Four six-cylinder engines are currently being assembled. Bench testing on these medium scale engines will commence within the next few months.

We are well beyond the proof of concept stage.

Latest Developments

Advent Power Systems - Employing the environmentally friendly external combustion Cyclone Technology engine and associative technologies for the U.S. Military, for biomass production of energy, and related areas which provide superior and cost saving capabilities to Advent Power Systems clients.


Cyclone WHE


Cyclone Power Technologies - Waste Heat Engine power generation tests. This External Heat Source simulation represents CLEAN POWER derived from the exhaust heat of a small industrial furnace. The WHE is a 18 Hp engine that will run a 10 Kw electrical power generator. visit for more details. (YouTube June 29, 2009)

Other Videos

Cyclone WHE Biomass Generator System (September 9, 2009)

Cyclone Power Investor Open House 2011- Chris Nelson, President (December 23, 2011)

Cyclone Waste Heat Engine promises power on the cheap Part 1

Cyclone External Combustion Engine Part 2

WTVJ 4 20 11 Nelson

Cyclone WHE/Generation

Progress of the Cyclone Mark V Engine

Cyclone Biomass to Power System

Cyclone's Waste Heat Engine Series

Mark V Steam 2

Cyclone Mark V Burner System

Cyclone WHE Biomass Generator System


(See website and patent for details.)

The Schoell cycle is an external combustion engine.

Its highest torque is at 1 rpm.

A 100 HP Cyclone engine would weight about 320 pounds, but would not require a radiator, transmission, catalytic converter, nor complex electronic ignition controls, reducing all those expenses, on top of being more inexpensive to build than the 400-lb ICE equivalent.

It only has one cam and six valves. It doesn't require exhaust valves. It uses composite bearings.

The expanding/contracting fluid is deionized water, which is maintained in a closed system. The engine is water lubricated, not requiring replenishment of the lubrication. There is no blow-by of lubricant.

The engine harnesses the heat from fuel combustion in a heat exchanger system. The fuel burns for a much longer period of time, allowing for a more complete burn, and very little of the emitted heat is lost to the environment, but is converted to rotational torque. Internally, the temperatures don't go above 2000 degrees. The external temperature is about 350 Fahrenheit, which could be put to use in a Combined Heat-Power (CHP) application.

The noise level of the engine is much lower than in an ICE. You can hear the combustor as a lull sound you can hear the blower, which sounds like the fan on an ICE. There is no exhaust noise.

The Cyclone can burn any liquid or gaseous fuel, and has even run on powdered coal. It would eliminate the need for expensive refinement of petrol, and requires no additives for lubrication. The engine would still require a fuel filter to keep the gunk out, but its orifices are much larger than diesel or fuel injection engines.

The company thinks the Cyclone engine will have greater longevity than the traditional I.C.E.


U.S. 7,080,512
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U.S. Patent No. 7,080,512 (PDF) - Heat regenerative engine Harry Schoell Cyclone Technologies LLLP July 25, 2006

Abstract : A heat regenerative engine uses water as both the working fluid and the lubricant. In operation, water is pumped from a collection pan and through a coil around a cylinder exhaust port, causing the water to be preheated by steam exhausted from the cylinder. The preheated water then enters a steam generator and is heated by a combustion chamber to produce high pressure super heated steam. Air is preheated in a heat exchanger and is then mixed with fuel from a fuel atomizer. An igniter burns the atomized fuel as the flames and heat are directed in a centrifuge within the combustion chamber. The speed and torque of the engine are controlled by a rocker and cam arrangement which opens a needle-type valve to inject high pressure super heated steam into a cylinder having a reciprocating piston therein. The injected steam expands in an explosive action on the top of the piston at high pressure forcing the piston down and drivingly rotating a linked crank cam and crankshaft. Exhaust steam is directed through a centrifugal condenser having an arrangement of flat plates. Cooling air from blowers circulates through the flat plates to condense the steam to a liquid state. The water condensation is returned to the collection pan for subsequent use in steam generation.

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Other Patents

Other Patents Pending, U.S. and Foreign

An international patent has been filed.

Worldwide Patents filed - Cyclone Power Technologies Inc. announced today that it has completed its Patent Cooperation Treaty (PCT) filing for worldwide patent protection on 11 major components of its Green Revolution Engine(tm). (PrimeNewsWire / Cyclone Power Technologies Inc press release July 23, 2007)

Fourteen patents are currently being filed to protect the 'package' of individual inventions that comprise the innovative system of components that make up the Cyclone Engine.


Quoting from

The engine is scalable in its size and output such that it can be utilized for applications ranging from small generators, household, and lawn equipment, to medium scales addressing automotive, power boats, and light trucks, and the larger scales required in the trucking, commercial marine, off road construction equipment, and stationary generator markets.


Company Profile

"In addition to developing the engines, the Cyclone team has secured an initial tier of investment, participated in major engineering trade shows, signed a contract with an investment group for the manufacturing rights of this engine in marine applications, and made marketing contacts with generator manufacturers, automobile manufacturers, and diesel engine builders." About

The company does not plan on manufacturing, but will be licensing the technology for its myriad of applications. Detroit has shown quite a bit of interest.

Presently they are considering a public offering. They need about $5 million US.

- - - -

More current info:

Inventor: Harry Schoell

Visit Harry Schoell on the web at:

Harry started into this technology by wanting to do something about the pollution that comes off a diesel engine.

AEI 2006

Cyclone Technologies LLP was awarded an AEI 2006 Tech Award at the 2006 World Congress in Detroit Michigan.

Pitching Across America 2005

100 VCs and Angels voted Cyclone Technologies LLP to be the 2005 state winner of the "Pitching Across America" Venture Capital Competition.

In the News


Google News > Cyclone Schoell - null as of March 16, 2007

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Latest: Directory:Cold Fusion / Directory:Engines > Directory:Cyclone Power Technologies Inc > Nuclear Engineer joins Cyclone to pursue LENR applications - Award-winning, external heat engine company from Florida has added LENR heavyweight, Professor Yeong E. Kim from Purdue University, to their technical consulting and advisory team to help them evaluate the viability of LENR technology as an application for their heat-to-electricity engine. (PESN December 4, 2013)

Free Energy Blog:2013:11:17 - "He said they had a deal with Jiffy Lube for-next generation Waste Heat Engines -- where you could HEAT using WASTE FUEL. They had one location they were going to set this up with and he heard there was an order for 600 units." (Free Energy Blog November 17, 2013)

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Engine That Runs on Waste or Solar Heat - Cyclone Power Technologies, Inc. has successfully tested its patent-pending Waste Heat Engine, a unique technology off-shoot of the Green Revolution Engine. The engine experienced immediate start-up, and ran continuously under variable pressures and RPM. (MarketWire Oct. 22, 2007)

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Cyclone Develops Waste Heat Engine - Cyclone Power Technologies has developed an external combustion Waste Heat Engine that operates in a low-pressure, low-temperature range, allowing it to run on exhaust from a combustion engine, or solar heat. By attaching inexpensive poly-carbonate panels to a roof, enough heat can be produced to run the WHE, at 1/5 the price of comparable PV systems. (Green Car Congress Sep. 24, 2007)

Cyclone Power to Showcase External Combustion Engine at SAE Event - Cyclone Power Technologies will display a 330 hp Truck Engine installed in a full truck chassis. It 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. (Green Car Congress Sep. 20, 2007)

Cyclone Power Technologies Makes Advancement On Design and Production of Material Engine Component - Cyclone Power Technologies Inc. (Pink Sheets:CYPW) announced today a material advancement in the design and production of the patent-pending condenser unit on its Green Revolution Engine(tm). New dyes and stamps created by the company now allow for a "stacked plate" design of the component, leading to quicker and cheaper production. (PrimeNewsWire July 31, 2007)

Updating the Steam Engine: the Cyclone - The Cyclone modifies the traditional Rankin cycle steam engine to deliver the use of super-critical pressure (3,200 psi) and super-heated steam (1,200° F)—normally found in high-efficiency electrical power plants—in an efficient, compact package suitable for a vehicle. (Green Car Congress Apr. 4, 2006)


Not to be confused with . . .

NOT: Wright Cyclone

On March 16, 2007, User:Mongander wrote:

I used to fly behind a "Wright Cyclone".

Image:Wright Cyclone engine 500.jpg
NOT: Cycclone
Image:Cycclone 95pxw.jpg
Directory:Cycclone - Company claims to have an all-permanent-magnet engine. The company has been under investigation by the Australian Securities and Investment Commission since April 2006.



601 NE 26th Court

Pompano Beach, Florida 33064

954-943-8721 – 954-788-6565 FAX

email: []


See Talk:Directory:Cyclone Power Technologies Inc

See also


Directory:External Combustion Engines

- Directory







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