Turboprop engines Turboprop engines are a type of aircraft powerplant that use a gas turbine to drive a propeller. The gas turbine is designed specifically for this application‚ with almost all of its output being used to drive the propeller. The engine’s exhaust gases contain little energy compared to a jet engine and play a minor role in the propulsion of the aircraft. The propeller is coupled to the turbine through a reduction gear that converts the high RPM‚ low torque output to low RPM‚
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confused with the catapult. The Mangonel is believed to be invented by the Romans in 400BC. During the Medieval age the engine was used most by the French. It’s named Mangonel because the Latin word manganon means “an engine of war”. Mangonels were referred to as scorpions because the arm of the engine was like the tail of the animal. The Mangonel wasn’t as accurate as other siege engines but did go a greater distance. The Mangonel has a long arm attached to a bowl like bucket. The base had wheels so
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WANKEL ENGINE The Wankel engine‚ invented by German engineer Felix Wankel‚ is a type of internal combustion engine which uses a rotary design to convert pressure into a rotating motion instead of using reciprocating pistons. Its four-stroke cycle takes place in a space between the inside of an oval-like epitrochoid-shaped housing and a rotor that is similar in shape to a Reuleaux triangle but with sides that are somewhat flatter. This design delivers smooth high-rpm power from a compact size. Since
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The Diesel Engine Diesel engines are very similar to the gasoline engine you may find in a car. They both are internal combustion engines‚ have a four stroke cycle‚ and convert chemical energy from fuel into mechanical energy. However‚ the manner in which the combustion stroke is attained sets these two engines apart‚ and although a seemingly meaningless change‚ a large change in efficiency results. (Diesel Engines vs. Gasoline Engines) The diesel engine was invented by Rudolf Diesel in 1892
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EN2702 Thermofluids – Petrol Engine Report Introduction At the end of 2010 it was estimated that there were 31‚035‚791 cars owned in the UK. (1) With cars being such a high contributor to the environmental problems that the planet is experiencing‚ it is of vital importance that our cars become as fuel efficient as possible‚ thus saving petrol and preserving the world’s fossil fuels. Around seventy-five percent of carbon monoxide emissions come from automobiles and in urban areas‚ harmful automotive
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Diesel Engines Diesel engines are everywhere; they are used in all sorts of vehicle platforms. From Volkswagen Jetta’s‚ to big eighteen wheel tractor trailer trucks. They provide more torque then a regular gasoline engine because of the long stroke of the piston. Most diesel engines make peak torque at very low rpm. Diesel engines do not have spark plugs. They develop combustion by heating up the air going into the cylinder‚ while the air is heated the fuel injector sprays into the bowl of
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Koenigsegg’s New Cam-Less Engine February 13‚ 2012 by Matt Jalopnik reports on an upcoming supercar from Swedish boutique automaker Koenigsegg that will feature a twin-turbo V8 engine whole valves are actuated without camshafts. Partnering with Swedish engineering firm Cargine‚ Koenigsegg plans to develop a valvetrain system whereby the valves are operated using pneumatic pressure alone. F1 car engines have used pneumatic valve springs since the Renault turbo engines of the mid-’80s‚ but always
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COMBUSTION ENGINES 6.1 Introduction Perhaps the best-known engine in the world is the reciprocating internal combustion (IC) engine. Virtually every person who has driven an automobile or pushed a power lawnmower has used one. By far the most widely used IC engine is the spark-ignition gasoline engine‚ which takes us to school and work and on pleasure jaunts. Although others had made significant contributions‚ Niklaus Otto is generally credited with the invention of the engine and with the
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Use of Cyclic Steam Stimulation technique for Enhanced Oil Recovery Cyclic Steam Stimulation(CSS)‚ also known as the steam huff and puff‚ steam soak‚ or cyclic steam injection is a process in which a combination of directional and horizontal wells are used to inject high pressure steam into the Clearwater Formation‚ which warms the bitumen oil viscosities(100-10‚000 cp) at reservoir temperature and lowers its viscosity thereby permitting it to flow into the well bore. . Figure 1 shows a typical
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