An engine is a mechanical device that produces some form of output from a given input.

An engine whose purpose is to produce kinetic energy output from a fuel source is called a prime mover; alternatively, a motor is a device which produces kinetic energy from a preprocessed "fuel" (such as electricity, a flow of hydraulic fluid or compressed air). The kinetic energy of an object is the extra Energy which it possesses due to its motion Fuel is any material that is burned or altered in order to obtain energy

A motor car (automobile) has a starter motor, a windscreen wiper motor, and motors to drive pumps (fuel, power steering, windscreen washer) – but the power plant that propels the car is called an engine. The term 'motor' was originally used to distinguish the new internal combustion engine -powered vehicles from earlier vehicles powered by a steam engine (as in steam roller and motor roller). The internal combustion engine is an engine in which the Combustion of Fuel and an Oxidizer (typically air occurs in a confined space called a A steam engine is a Heat engine that performs Mechanical work using Steam as its Working fluid. A steamroller (or steam roller) is a form of Road roller &ndash a type of heavy construction machinery used for levelling surfaces such as roads or airfields A road roller (sometimes called a roller-compactor, or just roller) is a Compactor type Engineering vehicle used to compact soil

Military engines included siege engines, large catapults, trebuchets and battering rams. A military is an Organization authorized by its Nation to use force usually including use of Weapons in defending its Country (or by attacking A siege engine is a device that is designed to Break or circumvent City walls and other Fortifications in Siege warfare. A catapult is any one of a number of non-handheld mechanical devices used to throw a Projectile a great distance without the aid of an explosive substance—particularly various A trebuchet or trebucket is a Siege engine that was employed in the Middle Ages either to smash Masonry Walls or to throw A battering ram is a Siege engine originating in ancient times to break open Fortification walls or doors

Contents 1 Usage of the term "Engine" 1.1 Antiquity 1.2 Medieval 1.3 Modern 2 Air-breathing engines 3 Environmental effects 4 References 5 See also 6 External links

Usage of the term "Engine"

Originally an engine was a mechanical device that converted force into motion. Military devices such as catapults are referred to as siege engines. A catapult is any one of a number of non-handheld mechanical devices used to throw a Projectile a great distance without the aid of an explosive substance—particularly various A siege engine is a device that is designed to Break or circumvent City walls and other Fortifications in Siege warfare. The term "gin" as in cotton gin is recognised as a short form of the Old French word engin, in turn from the Latin ingenium, related to ingenious. A Cotton Gin' (short for cotton engine) is a machine that quickly and easily separates the Cotton fibers from the seedpods and the sometimes sticky seeds a job Old French was the Romance Dialect continuum spoken in territories which span roughly the northern half of modern France and parts of modern Belgium Latin ( lingua Latīna, laˈtiːna is an Italic language, historically spoken in Latium and Ancient Rome. Most devices used in the industrial revolution were referred to as an engine, and this is where the steam engine gained its name. The Industrial Revolution was a period in the late 18th and early 19th centuries when major changes in agriculture manufacturing and transportation had a profound effect on the A steam engine is a Heat engine that performs Mechanical work using Steam as its Working fluid.

In more modern usage, the term is used to describe devices that perform mechanical work, follow-ons to the original steam engine. In Physics, mechanical work is the amount of Energy transferred by a Force. In most cases the work is supplied by exerting a torque, which is used to operate other machinery, generate electricity, pump water or compressed gas. A torque (τ in Physics, also called a moment (of force is a pseudo- vector that measures the tendency of a force to rotate an object about For information on Wikipedia project-related discussions see WikipediaVillage pump. A gas compressor is a mechanical device that increases the Pressure of a Gas by reducing its Volume. In the context of propulsion systems, an air breathing engine is one that uses atmospheric air to oxidise the fuel carried, rather than carrying an oxidiser, as in a rocket. Fuel is any material that is burned or altered in order to obtain energy A rocket or rocket vehicle is a Missile, Aircraft or other Vehicle which obtains Thrust by the reaction of the

The term is used in computer science in "search engine", "3-D graphics game engine", "rendering engine" and "text-to-speech engine", even though these "engines" are not mechanical and cause no mechanical action (this usage may have been inspired by the "difference engine", an early mechanical computing device). Computer science (or computing science) is the study and the Science of the theoretical foundations of Information and Computation and their A game engine is a software system designed for the creation and development of computer and video games Speech synthesis is the artificial production of human speech. The Difference Engine was an automatic mechanical calculator designed to tabulate polynomial functions.

Antiquity

Simple machines, such as club and oar (examples of the lever), are prehistoric. In Physics, especially Mechanics, a simple machine is a mechanical device that changes the direction or magnitude of a Force. A mace is a simple Weapon that uses a heavy head on the end of a handle to deliver powerful blows An oar is an implement used for water-borne propulsion. Oars have a flat blade at one end Stone Age Paleolithic See also Paleolithic, Recent African Origin, Early Homo sapiens, Early human migrations "Paleolithic" More complex engines using human power, animal power, water power, wind power and even steam power date back to antiquity. Manual labour (or manual labor) is physical work done with the hands especially in an unskilled job such as fruit and vegetable picking road building or any A working animal is an animal that is kept by humans and trained to perform tasks A water wheel is a means of extracting power from the flow (or fall of water otherwise known as Hydropower. A windmill is a machine that is powered by the energy of the wind A steam engine is a Heat engine that performs Mechanical work using Steam as its Working fluid. Human power was focused by the use of simple engines, such as the capstan, windlass or treadmill, and with ropes, pulleys, and block and tackle arrangements, this power was transmitted and multiplied. A capstan is a rotating machine used to apply Force to another element notably used on board ship and on dock walls for heaving-in or veering ropes cables and hawsers A windlass is an apparatus for moving heavy weights Typically a windlass consists of a horizontal cylinder (barrel which is rotated by the turn of a crank or belt A treadmill is a piece of indoor sporting equipment used to allow for the motions of Running or Walking while staying in one place A rope is a length of Fibers twisted or Braided together to improve strength for pulling and Connecting. A pulley (also called a sheave or block) is a Wheel with a groove between two Flanges around its Circumference A block and tackle is a system of two or more Pulleys with a Rope or Cable threaded between them usually used to lift or pull heavy loads These were used in cranes and aboard ships in Ancient Greece, and in mines, water pumps and siege engines in Ancient Rome. A crane is a lifting machine equipped with a Winder, Wire ropes or Chains and sheaves that can be used both to lift and lower materials and to A ship /ʃɪp/ is a large vessel that floats on water Ships are generally distinguished from Boats based on size The term ancient Greece refers to the period of Greek history lasting from the Greek Dark Ages ca Mining is the extraction of valuable Minerals or other geological materials from the earth usually (but not always from an Ore body For information on Wikipedia project-related discussions see WikipediaVillage pump. A siege engine is a device that is designed to Break or circumvent City walls and other Fortifications in Siege warfare. Ancient Rome was a Civilization that grew out of a small agricultural community founded on the Italian Peninsula as early as the 10th century BC The writers of those times, including Vitruvius, Frontinus and Pliny the Elder, treat these engines as commonplace, so their invention may be far more ancient. Marcus Vitruvius Pollio (born c 80–70 BC died after c 15 BC was a Roman Writer, Architect and Engineer (possibly praefectus fabrum Sextus Julius Frontinus (ca 40-103 AD was one of the most distinguished Roman aristocrats of the late first century AD but is best known to the post-Classical world as an Gaius or Caius Plinius Secundus, ( AD 23 – August 25, AD 79 better known as Pliny the Elder, was an ancient Author By the 1st century AD, various breeds of cattle and horses were used in mills, using machines similar to those powered by humans in earlier times. The 1st century was the Century that lasted from 1 to 100 according the Julian calendar. Cattle, colloquially referred to as cows, are domesticated Ungulates a member of the Subfamily Bovinae of the family The horse ( Equus caballus) is a hoofed ( Ungulate) Mammal, one of eight living species of the family Equidae. A grinding mill is a Unit operation designed to break a solid material into smaller pieces

According to Strabo, a water powered mill was built in Kaberia in the kingdom of Mithridates in the 1st century BC. Strabo ( Greek: Στράβων 63/64 BC – ca AD 24 was a Greek historian, geographer and philosopher. The 1st century BC started the first day of 100 BC and ended the last day of 1 BC. Use of water wheels in mills spread throughout the Roman Empire over the next few centuries. A water wheel is a means of extracting power from the flow (or fall of water otherwise known as Hydropower. The Roman Empire was the post-Republican phase of the ancient Roman civilization, characterised by an autocratic form of government and large territorial Some were quite complex, with aqueducts, dams, and sluices to maintain and channel the water, and systems of gears, or toothed-wheels made of wood with metal, used to regulate the speed of rotation. An aqueduct is an artificial channel that is constructed to convey water from one location to another A dam is a barrier that divides waters. Dams generally serve the primary purpose of retaining water while other structures such as Floodgates, Levees A sluice is a water channel that is controlled at its head by a gate This is the page for mechanical Gears For other uses see Gear (disambiguation For the gear-like device used to drive a roller chain see Sprocket In a poem by Ausonius in the 4th century, he mentions a stone-cutting saw powered by water. This article is about the Roman poet Ausonius For John Ausonius the Swedish murderer see John Ausonius. As a means of recording the passage of Time, the 4th century (per the Julian calendar and Anno Domini / Common era) was that Century Hero of Alexandria demonstrated both wind and steam powered machines in the 1st century, although it is not known if these were put to any use. Hero (or Heron) of Alexandria ( Ήρων ο Αλεξανδρεύς) (c Wind is the flow of Air or other Gases that compose an Atmosphere (including but not limited to the Earth's) Uses A Steam engine uses the expansion of steam in order to drive a Piston or Turbine to perform Mechanical work.

Medieval

During the Muslim Agricultural Revolution from the 7th to 13th centuries, Muslim engineers developed numerous innovative industrial uses of hydropower, early industrial uses of tidal power, wind power, and fossil fuels such as petroleum, and the earliest large factory complexes (tiraz in Arabic). The Islamic Golden Age from the 8th century to the 13th century witnessed a fundamental transformation in Agriculture known as the Arab Agricultural For other uses of this term see Industry (disambiguation An industry (from Latin industrius, "diligent industrious" Hydropower, hydraulic power or water power is power that is derived from the Force or Energy of moving water which may Tidal power, sometimes called tidal energy, is a form of Hydropower that converts the energy of Tides into electricity or other useful forms of power Wind Power is the conversion of wind energy into a useful form such as electricity using Wind turbines At the end of 2007 worldwide capacity of wind-powered generators was Fossil fuels or mineral fuels are fossil source Fuels that is Hydrocarbons found within the top layer of the Earth’s crust. Petroleum ( L petroleum, from Greek πετρέλαιον, lit A factory (previously manufactory) or manufacturing plant is an industrial Building where workers manufacture goods ^[1] The industrial uses of watermills in the Islamic world date back to the 7th century, while horizontal-wheeled and vertical-wheeled water mills were both in widespread use since at least the 9th century. This article is about a type of structure For other locational uses see Milldam. A water wheel is a means of extracting power from the flow (or fall of water otherwise known as Hydropower. A variety of industrial mills were invented in the Islamic world, including fulling mills, gristmills, hullers, paper mills, sawmills, ship mills, stamp mills, steel mills, sugar refineries, tide mills, and windmills. A gristmill or grist mill is a building where Grain is ground into Flour, or the grinding mechanism itself A huller (or sometimes called a rice husker) is a kind of Agricultural machinery to hull Rice. A paper mill is a Factory devoted to making Paper from wood pulp and other ingredients using a Fourdrinier Machine or similar apparatus A sawmill is a facility where logs are cut into boards Sawmill process A sawmill's basic operation is much like those of 100 years ago a log enters A ship /ʃɪp/ is a large vessel that floats on water Ships are generally distinguished from Boats based on size A stamp mill (or stamp battery) is a type of mill that crushes material by pounding rather than grinding either for further processing or for extraction of metallic ores Steel Mill was one of Bruce Springsteen 's early bands and performed regularly on the Jersey Shore, in Virginia, and also in California from 1969 A Sugar Refinery or sugar Mill is a Factory which refines sugar from various organic sources like sugar cane or beets into a A tide mill is a specialist type of water mill driven by tidal rise and fall A windmill is a machine that is powered by the energy of the wind By the 11th century, every province throughout the Islamic world had these industrial mills in operation, from the Middle East and Central Asia to al-Andalus and North Africa. The Middle East is a Subcontinent with no clear boundaries often used as a synonym to Near East, in opposition to Far East. Central Asia is a region of Asia from the Caspian Sea in the west to central China in the east and from southern Russia in the north to northern Pakistan in the south Al-Andalus (الأندلس was the Arabic name given to those parts of the Iberian Peninsula governed by Muslims or North Africa or Northern Africa is the Northernmost Region of the African Continent, separated by the Sahara from Sub-Saharan ^[2]

Muslim engineers also invented crankshafts and water turbines, employed gears in mills and water-raising machines, and pioneered the use of dams as a source of water power to provide additional power to watermills and water-raising machines. The crankshaft, sometimes casually abbreviated to crank, is the part of an Engine which translates reciprocating Linear A water turbine is a rotary Engine that takes energy from moving water This is the page for mechanical Gears For other uses see Gear (disambiguation For the gear-like device used to drive a roller chain see Sprocket A machine is any device that uses Energy to perform some activity A dam is a barrier that divides waters. Dams generally serve the primary purpose of retaining water while other structures such as Floodgates, Levees ^[3] Such advances made it possible for many industrial tasks that were previously driven by manual labour in ancient times to be mechanized and driven by machinery to some extent in the medieval Islamic world. Manual labour (or manual labor) is physical work done with the hands especially in an unskilled job such as fruit and vegetable picking road building or any "Ancient" redirects here For other uses see Ancient_(disambiguation. Mechanization or mechanisation ( BE) is providing human operators with machinery to assist them with the physical requirements of work A machine is any device that uses Energy to perform some activity The transfer of these technologies to medieval Europe later laid the foundations for the Industrial Revolution in 18th century Europe. The Industrial Revolution was a period in the late 18th and early 19th centuries when major changes in agriculture manufacturing and transportation had a profound effect on the ^[2]

In 1206, al-Jazari invented the crankshaft and connecting rod, and employed them in a crank-connecting rod system for two of his water-raising machines. Abū al-'Iz Ibn Ismā'īl ibn al-Razāz al-Jazarī ( 1136 - 1206) (أَبُو اَلْعِزِ بْنُ إسْماعِيلِ بْنُ الرِّزاز الجزري The crankshaft, sometimes casually abbreviated to crank, is the part of an Engine which translates reciprocating Linear In a reciprocating Piston engine, the connecting rod or conrod connects the Piston to the crank or Crankshaft. His invention of the crankshaft is considered one of the most important mechanical inventions after the wheel, as it transforms continuous rotary motion into a linear reciprocating motion, and is central to modern machinery such as the steam engine and the internal combustion engine. A wheel is a circular device that is capable of rotating on its axis facilitating movement or transportation whilst supporting a load ( Mass) or performing labour in machines The rotary engine was an early type of internal combustion Aircraft engine in which the Crankshaft remains stationary and the entire Cylinder A reciprocating engine, also often known as a piston engine, is a Heat engine that uses one or more reciprocating Pistons to convert A steam engine is a Heat engine that performs Mechanical work using Steam as its Working fluid. The internal combustion engine is an engine in which the Combustion of Fuel and an Oxidizer (typically air occurs in a confined space called a ^[4] In 1551, Taqi al-Din invented a practical steam turbine as a prime mover for rotating a spit. Taqi al-Din Muhammad ibn Ma'ruf al-Shami al-Asadi ( Arabic: تقي الدين محمد بن معروف الشامي السعدي Turkish: Takiyuddin) (1526&ndash1585 A steam turbine is a mechanical device that extracts Thermal energy from pressurized Steam, and converts it into useful mechanical work A similar steam turbine later appeared in Europe a century later, which eventually led to the steam engine and Industrial Revolution in 18th century Europe. A steam engine is a Heat engine that performs Mechanical work using Steam as its Working fluid. ^[5]

Modern

English inventor Sir Samuel Morland allegedly used gunpowder to drive water pumps in the 17th century. England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland Sir Samuel Morland 1st Baronet (1625 – 30 December 1695) or Moreland, was a notable English academic Diplomat, Spy Gunpowder is a an explosive mixture of Sulfur, Charcoal and Potassium nitrate (also known as saltpetre/saltpeter that burns rapidly producing volumes As a means of recording the passage of Time, the 17th Century was that Century which lasted from 1601 - 1700 in the Gregorian calendar For more conventional, reciprocating internal combustion engines. The internal combustion engine is an engine in which the Combustion of Fuel and an Oxidizer (typically air occurs in a confined space called a the fundamental theory for two-stroke engines was established by Sadi Carnot, France, 1824, whilst the American Samuel Morey received a patent on April 1, 1826. The two-stroke Internal combustion engine differs from the more common Four-stroke engine by completing the same four processes (intake compression combustion exhaust Nicolas Léonard Sadi Carnot (1 June 1796 &ndash 24 August 1832 was a French Physicist and Military engineer who in his 1824 Reflections This article is about the country For a topic outline on this subject see List of basic France topics. Samuel Morey ( October 23, 1762 - April 17, 1843) was an American inventor who invented an Internal combustion engine and A patent is a set of Exclusive rights granted by a State to an inventor or his assignee for a fixed period of time in exchange for a disclosure of an Events 527 - Byzantine Emperor Justin I names his nephew Justinian I as co-ruler and successor to the throne For the game see 1826 (board game. Year 1826 ( MDCCCXXVI) was a Common year starting on Sunday (link will display Sir Dugald Clark (1854 – 1932) designed the first two-stroke engine in 1878 and patented it in England in 1881. Automotive production has used a range of energy-conversion systems. These include electric, steam, solar, turbine, rotary, and piston-type internal combustion engines. A steam engine is a Heat engine that performs Mechanical work using Steam as its Working fluid. Solar energy is the Light and radiant heat from the Sun that powers Earth 's Climate and Weather and sustains Life A turbine is a rotary Engine that extracts Energy from a Fluid flow The petrol internal combustion engine, operating on a four-stroke Otto cycle, has been the most successful for automobiles, while diesel engines are used for trucks and buses. Karl Benz was one of the leaders in the development of new engines. Karl Friedrich Benz, sometimes spelled Carl, ( November 25, 1844, Karlsruhe, Germany – April 4, 1929, Ladenburg In 1878 he began to work on new designs. He concentrated his efforts on creating a reliable gas two-stroke engine that was more powerful, based on Nikolaus Otto's design of the four-stroke engine. Nicolaus August Otto ( June 14, 1832 Holzhausen an der Haide, Nassau - January 26, 1891 Cologne) was the German Karl Benz showed his real genius, however, through his successive inventions registered while designing what would become the production standard for his two-stroke engine. Benz was granted a patent for it in 1879. Year 1879 ( MDCCCLXXIX) was a Common year starting on Wednesday (link will display the full calendar of the Gregorian calendar (or a Common

In 1896, Karl Benz was granted a patent for his design of the first engine with horizontally-opposed pistons. Many BMW motorcycles use this engine type. His design created an engine in which the corresponding pistons move in horizontal cylinders and reach top dead center simultaneously, thus automatically balancing each other with respect to their individual momentums. Engines of this design are often referred to as flat engines because of their shape and lower profile. They must have an even number of cylinders and six, four or two cylinder flat engines have all been common. The most well-known engine of this type is probably the Volkswagen beetle engine. Engines of this type continue to be a common design principle for high performance aero engines (for propellor driven aircraft) and, engines used by automobile producers such as Porsche and Subaru. An aircraft engine is a Propulsion system for an Aircraft. Aircraft engines are almost always a type of lightweight Internal combustion engine.

Continuance of the use of the internal combustion engine for automobiles is partly due to the improvement of engine control systems (onboard computers providing engine management processes, and electronically controlled fuel injection). Forced air induction by turbocharging and supercharging have increased power outputs and efficiencies available. Similar changes have been applied to smaller diesel engines giving them almost the same power characteristics as petrol engines. This is especially evident with the popularity of smaller diesel engine propelled cars in Europe. Larger diesel engines are still often used in trucks and heavy machinery. They do not burn as clean as gasoline engines, however they have far more torque. The internal combustion engine was originally selected for the automobile due to its flexibility over a wide range of speeds. Also, the power developed for a given weight engine was reasonable; it could be produced by economical mass-production methods; and it used a readily available, moderately priced fuel - petrol.

There has been a growing emphasis on the pollution producing features of automotive power systems. This has created new interest in alternate power sources and internal-combustion engine refinements. Although a few limited-production battery-powered electric vehicles have appeared, they have not proved to be competitive owing to costs and operating characteristics. In the twenty-first century the diesel engine has been increasing in popularity with automobile owners. However, the gasoline engine, with its new emission-control devices to improve emission performance, has not yet been significantly challenged.

The first half of the twentieth century saw a trend to increasing engine power, particularly in the American models. Design changes incorporated all known methods of raising engine capacity, including increasing the pressure in the cylinders to improve efficiency, increasing the size of the engine, and increasing the speed at which power is generated. The higher forces and pressures created by these changes created engine vibration and size problems that led to stiffer, more compact engines with V and opposed cylinder layouts replacing longer straight-line arrangements. In passenger cars, V-8 layouts were adopted for all piston displacements greater than 250 cubic inches (4 litres). A V8 engine is a V engine with eight cylinders mounted on the Crankcase in two banks of four cylinders in most cases set at a right angle to each other A cubic inch (plural cubic inches) is a non- SI unit of Volume, equal to the volume of a Cube with sides of one Inch.

The design principles favoured in Europe, because of economic and other restraints such as smaller and twistier roads, leant toward smaller cars and corresponding design principles that concentrated on increasing the combustion efficiency of smaller engines. This produced more economical engines with earlier four-cylinder designs rated at 40 horsepower (30 kW) and six-cylinder designs rated as low as 80 horsepower (60 kW), compared with the large volume V-8 American engines with power ratings in the range from 250 to 350 hp (190 to 260 kW).

Earlier automobile engine development produced a much larger range of engines than is in common use today. Engines have ranged from 1 to 16 cylinder designs with corresponding differences in overall size, weight, piston displacement, and cylinder bores. Four cylinders and power ratings from 19 to 120 hp (14 to 90 kW) were followed in a majority of the models. Several three-cylinder, two-stroke-cycle models were built while most engines had straight or in-line cylinders. There were several V-type models and horizontally opposed two- and four-cylinder makes too. Overhead camshafts were frequently employed. The smaller engines were commonly air-cooled and located at the rear of the vehicle; compression ratios were relatively low. The 1970s and '80s saw an increased interest in improved fuel economy which brought in a return to smaller V-6 and four-cylinder layouts, with as many as five valves per cylinder to improve efficiency. The Bugatti Veyron 16. The Bugatti Veyron 164 is a mid-engine Sports car produced by Volkswagen Group subsidiary Bugatti Automobiles SAS introduced in 2005 4 operates with a W16 engine meaning that two V8 cylinder layouts are positioned next to each other to create the W shape, which means the Veyron has the largest number of cylinders to appear in a production car. A W16 engine is a sixteen cylinder piston Internal combustion engine in a W configuration. A V8 engine is a V engine with eight cylinders mounted on the Crankcase in two banks of four cylinders in most cases set at a right angle to each other

The largest internal combustion engine ever built is the Wärtsilä-Sulzer RTA96-C, a 14-cylinder, 2-stroke turbocharged diesel engine that was designed to power the Emma Maersk, the largest container ship in the world. The Wärtsilä RT-flex96C Turbocharged Two-stroke Diesel engine is currently considered the largest Reciprocating engine in the world Capacity By normal calculations Emma Mærsk's cargo capacity is significantly greater than the listed capacity — between and. This engine weighs 2300 tonnes, and when running at 102 RPM produces 109,000 bhp (80,080 kW) consuming some 13. 7 tonnes of fuel each hour.

Air-breathing engines

Air-breathing engines use atmospheric air to oxidise the fuel carried, rather than carrying an oxidiser, as in a rocket. An engine is a mechanical device that produces some form of output from a given input A rocket or rocket vehicle is a Missile, Aircraft or other Vehicle which obtains Thrust by the reaction of the Theoretically, this should result in a better specific impulse than for rocket engines. Specific impulse (usually abbreviated I sp is a way to describe the efficiency of rocket and jet engines Air-breathing engines include:

• Internal combustion engine
• Jet engine
• Ramjet
• Scramjet
• Pulse detonation engine
• Pulse jet
• Liquid air cycle engine/SABRE
• Marquez jet cycle

Environmental effects

Operation of engines and typically lead to impacts upon ambient sound levels air quality. The internal combustion engine is an engine in which the Combustion of Fuel and an Oxidizer (typically air occurs in a confined space called a specific --->A jet engine is a Reaction engine that discharges a fast moving jet of Fluid to A ramjet, sometimes referred to as a stovepipe jet, or an athodyd, is a form of Jet engine that contains no major Moving parts. A scramjet ( s upersonic c ombustion ramjet) is a variation of a Ramjet with the distinction being that some or all of the combustion process A pulse-detonation engine, or "PDE" is a type of propulsion system that can operate from subsonic up to Hypersonic speeds A pulse jet engine (or pulsejet) is a very simple form of Internal combustion engine based Jet engine where combustion occurs in Pulses A liquid air cycle engine (LACE is a Spacecraft propulsion engine that attempts to gain efficiency by gathering part of its oxidizer from the atmosphere. SABRE (Synergic Air Breathing Engine is a design for a Hypersonic hydrogen-fueled air breathing combined cycle Rocket engine / Turbojet engine The Air Quality Index ( AQI) is a standardized indicator of the Air Quality in a given location In the case of sound levels engine operation is of greatest impact with respect to mobile sources such as automobiles and trucks. Engine noise is a particularly large component of mobile source noise for vehicles operating at lower speeds, where aerodynamic and tyre noise is less significant. ^[6]

References

1. ^ Maya Shatzmiller (1994), Labour in the Medieval Islamic World, p. 36, Brill Publishers, ISBN 9004098968. Founded in 1683 in Leiden, The Netherlands, Brill (known as E
2. ^ ^{a b} Adam Robert Lucas (2005), "Industrial Milling in the Ancient and Medieval Worlds: A Survey of the Evidence for an Industrial Revolution in Medieval Europe", Technology and Culture 46 (1), pp. 1–30 [10].
3. ^ Ahmad Y Hassan, Transfer Of Islamic Technology To The West, Part II: Transmission Of Islamic Engineering
4. ^ Ahmad Y Hassan. Ahmad Y Hassan أحمد يوسف الحسن(born 1925 is a chevalier of the Légion d'honneur and a historian of Arabic and Islamic science and technology Ahmad Y Hassan أحمد يوسف الحسن(born 1925 is a chevalier of the Légion d'honneur and a historian of Arabic and Islamic science and technology The Crank-Connecting Rod System in a Continuously Rotating Machine.
5. ^ Ahmad Y Hassan (1976). Ahmad Y Hassan أحمد يوسف الحسن(born 1925 is a chevalier of the Légion d'honneur and a historian of Arabic and Islamic science and technology Taqi al-Din and Arabic Mechanical Engineering, pp. 34–5. Institute for the History of Arabic Science, University of Aleppo. University of Aleppo ( جامعة حلب, also called Aleppo University) is a Public university located in Aleppo, Syria.
6. ^ C. Michael Hogan, Analysis of Highway Noise, Journal of Water, Air, and Soil Pollution, Vol. 2, No 3, Biomedical and Life Sciences and Earth and Environmental Science Issue, Pages 387-392, Sept., 1973, Springer Verlag, Netherlands ISSN 0049-6979

• J. G. Landels, Engineering in the Ancient World, ISBN 0-520-04127-5

See also

External links

• How stuff works: Cars Engines
• Engines working. Animation

A machine is any device that uses Energy to perform some activity Timeline of motor and Engine Technology (c 30 - 70 AD - Hero of Alexandria builds the first documented steam-powered Heat engines have been known since antiquity but were only made into useful devices at the time of the Industrial revolution in the eighteenth century Multifuel, sometimes spelled multi-fuel, is a term applied to any type of Engine, Boiler, or Heater or other fuel-burning device which is A turbine is a rotary Engine that extracts Energy from a Fluid flow A gas turbine, also called a combustion turbine, is a rotary Engine that extracts energy from a flow of Combustion gas A water turbine is a rotary Engine that takes energy from moving water A heat engine is a physical or theoretical device that converts Thermal energy to mechanical output A reciprocating engine, also often known as a piston engine, is a Heat engine that uses one or more reciprocating Pistons to convert An external combustion engine (EC engine is a Heat engine where an (internal working Fluid is heated by combustion of an external source through the Engine A steam engine is a Heat engine that performs Mechanical work using Steam as its Working fluid. A steam turbine is a mechanical device that extracts Thermal energy from pressurized Steam, and converts it into useful mechanical work A Stirling engine is a closed-cycle regenerative Heat engine with a Gaseous working fluid The internal combustion engine is an engine in which the Combustion of Fuel and an Oxidizer (typically air occurs in a confined space called a A rocket or rocket vehicle is a Missile, Aircraft or other Vehicle which obtains Thrust by the reaction of the The hotbulb, or hot bulb engine or Vaporizing oil engine is a type of Internal combustion engine. A diesel engine is an Internal combustion engine which operates using the Diesel cycle (named after Dr A Petrol engine or Gasoline engine is an Internal combustion engine with spark-ignition designed to run on petrol ( Gasoline) and similar volatile Homogeneous Charge Compression Ignition, or HCCI, is a form of internal combustion in which well-mixed Fuel and Oxidizer (typically air are Spacecraft propulsion is any method used to change the velocity of Spacecraft and artificial Satellites There are many different methods An aircraft engine is a Propulsion system for an Aircraft. Aircraft engines are almost always a type of lightweight Internal combustion engine. A Compressed air engine is a Pneumatic actuator that creates useful work by expanding Compressed air. The internal combustion engine is an engine in which the Combustion of Fuel and an Oxidizer (typically air occurs in a confined space called a A motorcycle engine propels a Motorcycle. The engine typically sits immediately under the fuel tank in between and just forward of the rider's legs Model Engine was an Alternative rock band based in Santa Barbara, California. An outboard motor is a propulsion system for smaller Boats General uses Outboard motors for a Boat are developed as a self-contained An engine test stand is a facility used to develop characterize and test engines

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