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Topic: External combustion engines

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	Internal-combustion engine
		This can be contrasted with external combustion engines such as steam engines and Stirling engines, which burn their fuel outside the engine.
		Jet engines and gas turbines use internal combustion, but the term 'internal-combustion engine' is normally used only to refer to engines in which combustion is intermittent (and usually featuring reciprocating machinery).
		The combustion of the fuel results in the generation of heat, and the hot gases that are in the cylinder are then at a higher pressure than the fuel-air mixture and so drive the piston back down.
	www.guajara.com /wiki/en/wikipedia/i/in/internal_combustion_engine.html (481 words)

	PowerPedia:Internal combustion engine - PESWiki
		The internal combustion engine is a heat engine in which the burning of a fuel occurs in a confined space called a combustion chamber.
		The defining feature of an internal combustion engine is that useful work is performed by the expanding hot gases acting directly to cause movement, for example by acting on pistons, rotors, or even by pressing on and moving the entire engine itself.
		This contrasts with external combustion engines such as steam engines which use the combustion process to heat a separate working fluid, typically water or steam, which then in turn does work, for example by pressing on a steam actuated piston.
	peswiki.com /index.php/Internal_combustion_engine (4323 words)

	Steve's Old Engine Shed - The Collection
		Engine speed is sensed, usually, by a fly ball type of governor, similar to those used on early steam engines.
		As engine speed increases to a preset level, the governor mechanism engages some type of latch mechanism to hold the exhaust valve open, regardless of the exhaust cam position.
		With the exhaust open, the engine is unable to draw a fresh gas/air charge into the cylinder during the intake stroke, nor is it able to compress the mixture during the compression stroke.
	www.oldengineshed.com /groups.html (1212 words)

	EnergyPulse Article
		Combustion chambers of modern jet engines can now be supplied with liners made from silicon nitride and turbine blades made from both ceramics have appeared on turbine engines as well as on engine turbochargers.
		In an external combustion air turbine, the high-temperature heat exchanger(s) would be located between the compressor and power turbine, downstream of which would be a combustion supply fan (driven by the turboshaft) and the combustion chamber.
		The single-shaft non-intercooled turbine engine that use a centrifugal or radial flow compressor that accelerates air perpendicular to the turboshaft, may be a suitable candidate for conversion.
	www.energypulse.net /centers/article/article_print.cfm?a_id=1153 (2689 words)

	Q1
		The operation of the internal combustion engine necessities the admission to the trapping in and the exhausting of the working medium from the engine cylinder all of which is accomplished with valves and valves mechanism.
		In engines which have simple inlet ports and poppet ro sleeve valve controlled exhaust ports, the inlet and exhaust ports are placed at opposite ends of the cylinder and the fresh charge sweeps along the cylinder towards the exhaust port.
		In all reciprocating internal combustion engines the gases are induced into and exhausted from the cylinder through ports, the opening and closing of which are related to the piston position.
	members.fortunecity.com /nedians2/ic.htm (2815 words)

	Chapter 12 - Internal combustion engine
		The engine that moves it is one of the most fascinating and talked about of all the complex machines we use today.
		Thus, in internal combustion engines, the burning of fuel takes place inside the engine; that is, burning takes place within the same cylinder that produces energy to turn the crankshaft.
		combustion engine, the combustion takes place inside the cylinder and is directly responsible for forcing the piston to move downward.
	www.tpub.com /machines/12.htm (505 words)

	How Engines Work - Tech Articles - Mustang Monthly Magazine
		“External combustion,” for example, is similar to that found with a steam engine.
		Fuel is burnt outside of the engine in a boiler to heat water that becomes steam and heat energy.
		Engines fail whenever oil pressure is lost and moving parts grind themselves to an unpleasant halt.
	www.mustangmonthly.com /techarticles/97278_how_engines_work (3216 words)

	Trochilic Engines - Stirling
		That is operation with external combustion; as in the Stirling engine, but at atmospheric input pressure and return of exhaust gases to the atmosphere.
		Steam and the internal combustion engines were evolving in that era as well and they met with greater commercial acceptance.
		The Trochilic Stirling engine provides more useful output power for the applied heat because of its energy efficient rotary motion but in solar applications is as vulnerable, as all energy-collecting systems are to the lack of sunlight.
	www.trochilicengines.com /stirling (480 words)

	PowerPedia:External combustion engine - PESWiki
		An external combustion engine (abreviation ECE) is a heat engine which burns fuel to heat a separate working fluid which then in turn performs work.
		For the same power, external combustion engines are often less compact and heavier than internal combustion engines.
		Externally heated cycles include the Stirling cycle, Ericsson Cycle and Brayton cycle.
	peswiki.com /index.php/PowerPedia:External_combustion_engine (234 words)

	BBC NEWS \| Science/Nature \| Steam engines could be eco hope
		The public is reluctant to explore nuclear; but researchers and engineers across the world are exploring how best to generate and, more importantly, store hydrogen fuel, one of the main barriers to its widespread use.
		Although steam engines are most likely to need to burn hydrocarbon-based fuels like petrol and diesel, which in turn release carbon dioxide, external combustion engines can control the release and the production of CO2 more efficiently.
		It was set at a time when the battle for supremacy between petrol-powered internal combustion engines and steam-powered external combustion engines was in full sprint.
	news.bbc.co.uk /2/low/science/nature/4076811.stm (1206 words)

	Stirling Power LLC - STM Power: PowerUnit Stirling cycle generation. (Site not responding. Last check: 2007-11-04)
		combustion engines are fundamentally different than the common internal combustion engine.
		Instead of exploding inside of the engine, the fuel is burned in a combustion chamber that is sealed off from the working parts of the engine.
		The external combustion design allows for controlled, clean burning so the emissions are lower than produced by other types of engines.
	www.iinet.com /~grott/stm.htm (176 words)

	THE INTERNAL COMBUSTION ENGINE
		His first (1862) engine with compression having shocked itself apart, Nikolaus Otto designed an indirect acting free piston compression-less engine whose greater efficiency won the support of Langen and then most of the market, which at that time, was mostly for small stationary engines fueled by lighting gas.
		For high performance gasoline engines using current materials and technology (such as the engines found in modern automobiles), there seems to be a break point around 10 or 12 cylinders, after which addition of cylinders becomes an overall detriment to performance and efficiency, although exceptions such as the W-16 engine from Volkswagen exist.
		The Morris Minor 1000, the Morris 1100, and the Austin-Healey Sprite Mark II all had engines of the same stroke and bore according to their specifications, and were from the same maker.
	www.speedace.info /internal_combustion_engine.htm (3967 words)

	ever heard of EXTERNAL combustion engines???? - THE H.A.M.B.
		the only external combustion engine i have heard of is a air cooled VW when the fuel line fell off the carb and dumped on the distributer.
		that and maybe a turbine engine, is that considered external combustion?
		The piston was a copper plated bee bee and instead of a wrist pin the rod acted on a trunnion like a steam engines.
	www.jalopyjournal.com /forum/showthread.php?t=6729 (1024 words)

	Halfbakery: Coal/graphite internal combustion
		With new metals and porcelain technology (one might have a seperate porcelain cylinder for compressing to a gas as opposed to combustion, which would be done by the cylinders recieving the gassified carbon) this could be reconsidered, if, as I'm sure it has been, already long ago.
		Diesel engines origanly were designed to run on coal dust, but it was to messy, so they switched to liquid fuel.
		As I recall, Diesels first engine (his "rational engine") broke because it had a 60 to 1 compression ratio.
	www.halfbakery.com /idea/Coal_2fgraphite_20internal_20combustion (528 words)

	External Combustion Engines (Site not responding. Last check: 2007-11-04)
		This category includes steam engines, Stirling engines, and the like.
		We have two people presently building steam engines.
		Rupert is building a Uniflow stationary engine, similar to the one in this picture.
	www.compusmart.ab.ca /rmcbeath/ece/ece.htm (79 words)

	Gallery
		It is a model of engines made by the DeLamater Iron Works of New York City in the late 1800's and early 1900's and sold the world over for water pumping.
		The Rider engine was a "1 of 50" serial numbered castings kit that I had available a few years ago.
		I decided to start a project of several basic engines simple and quick to build that demonstrate the basics of different designs, cycles, etc. The first is a Pin and Ball Valve engine that runs on compressed air.
	www.floridaame.org /galleryEx.htm (927 words)

	External-Combustion Engine (Site not responding. Last check: 2007-11-04)
		They burn their fuel in a single chamber or furnace, with the heat from this combustion driving the pistons up and down in their cylinders to rotate the crankshaft.
		This arrangement allows for increased efficiency over internal-combustion engines because the combustion takes place continuously, instead of in a series of explosions (which inevitably leave more unburned fuel).
		Efficiencies of up to 60 percent are theoretically possible, compared to 45 percent for diesel engines and not much more than 30 percent for standard Otto engines.
	www.rmi.org /sitepages/pid456.php (186 words)

	THE H.A.M.B. - ever heard of EXTERNAL combustion engines???? (Site not responding. Last check: 2007-11-04)
		it is just an engine that doesnt use the cylinder as the combustion chamber, instead, the combustion takes place elsewhere and is fed into the cylinders, which have a normal intake/exhaust valve setup, through a series of tubes, still kinda dangerous looking, wish I had one to tinker with...
		I was gonna come in for christmas, but mom and dad and pat came out here...sorry I didnt reply until now, been busy visitin' with them...
		Years ago there was a comment in Cycle World about very small internal combustion engines, like model airplane engines etc. A couple days later this genius builder Mike Weston shows up at my shop, fist opens and he says "I think this is small enough, don't you?
	www.jalopyjournal.com /forum/printthread.php?t=6729 (1069 words)

	Energy\|now - Portfolio - External Combustion Engines (Site not responding. Last check: 2007-11-04)
		The ENX 55 is a 55 kW external combustion engine that uniquely combines Stirling Engine technology with state-of-the-art generator, power electronics, control and remote monitoring technologies.
		This energynow onsite energy system is an excellent source of highly efficient, reliable power for various applications, including digester plants, flare gas, wood gasification and landfills.
		This proprietary, 4-cylinder heat engine technology from STM Power Inc., a leader in Stirling Engine technology based in Ann Arbor, Mich., can utilize heat from virtually any source and turn it into efficient electrical power.
	www.dtetech.com /energynow/portfolio/2_1_2.asp (95 words)

	External Combustion Engines..
		Here is a video of a hot air engine built by a 15 year old student of Rosmini College, in Alexander Breig's class.
		Stirling Engines & Steam Traction Engines in action at The 'Rough & Tumble Museum'
		This Stirling and Hot Air Engine Ring site is owned by Dale Guenther.
	www.geocities.com /Yosemite/Rapids/2068 (86 words)

	Stirling Engines, Waste heat recovery, Sterling Engines- American Stirling Company Home Page
		The MM-7 Stirling engine will run on a temperature difference of only 7.2 degrees F (4 degrees C).
		At only $39.00 our new Eco Power Stirling engine kit is a price breakthrough.
		Our FAQ offers a good overview of Stirling Engines, but the best way to really understand Stirling engines is to hold one of our transparent engines in your hands and carefully watch it run.
	www.stirlingengine.com (222 words)

	BBC - h2g2 - Project: Internal-Combustion Engines - A629417
		If you have further information that you think might be useful in this project, please post it in the conversations below, or contact the Field Researcher running this project (see above).
		Note: due to lack of information, the project has been renamed to "Internal-Combustion Engines." Just one entry on external-combustion engines did not seem worth it.
		The BBC is not responsible for the content of any external sites referenced.
	www.bbc.co.uk /dna/h2g2/alabaster/A629417 (274 words)

	Stirling and Hot Air Engine Ring (Site not responding. Last check: 2007-11-04)
		Moving cylinder Stirling engines, rotary liquid piston Stirling engines, the Seesaw Stirling engine and other Stirling design work of Hubert Stierhof (Germany) is shown here.
		Novel rotary styles of engine, some being LTD made from drink cans, and some suggested as a way forward for commercial engine development, are presented.
		The Thermal Engine Corporation is the manufacturer of the Heat Wave Stirling engine powered wood stove fan.
	m.webring.com /hub?ring=stirling (683 words)

	External combustion engine - Wikipedia, the free encyclopedia
		An external combustion engine is a heat engine which burns fuel to heat a separate working fluid which then in turn performs work.
		The spinning shaft can drive an electric generator, move a ship's propeller, or do other useful work.
		This page was last modified 08:34, 20 July 2006.
	en.wikipedia.org /wiki/External_combustion_engines (243 words)

	Sunpower (Site not responding. Last check: 2007-11-04)
		The world leader in free-piston Stirling engines and coolers
		For over 30 years, Sunpower has provided collaboration, design, application and commercialization of our unique technology to clients worldwide.
		Today, Sunpower-enabled products include innovative Stirling engines, coolers, cryocoolers and compressors integrated into environmentally friendly, long-lived, high efficiency solutions.
	www.sunpower.com (98 words)

	External Combustion Engines (Site not responding. Last check: 2007-11-04)
		The Stirling Engine: The Power Plant of the Future
		Argonne: Development of Stirling Engines for Stationary Power Generation
		Invention in Cyberspace: Parallel Combustion Two-Stroke Engine (PC2S)
	www.uni.edu /darrow/frames/externalc.html (69 words)

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