Piston: Facts, Discussion Forum, and Encyclopedia Article

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Piston

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	Piston
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	Topics Piston Topic Home A piston is a component of reciprocating engineReciprocating engine A reciprocating engine, also often known as a piston engine, is an engine that uses one or more pistons to convert pre... s, pumpPump This article is about the mechanical device.... s and gas compressorGas compressor A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume.... s. It is located in a cylinderCylinder (engine) A cylinder in the central working part of a reciprocating engine, the space in which a piston travels.... and is made gas-tight by piston ringPiston ring A piston ring is an open-ended ring that fits into a groove on the outer diameter of a piston.... s. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaftCrankshaft The crankshaft, sometimes casually abbreviated to crank, is the part of an engine which translates reciprocating linear ... via a piston rodPiston rod In a piston engine, a piston rod joins a piston to a connecting rod.... and/or connecting rodConnecting rod In a reciprocating piston engine, the connecting rod or con rod connects the piston to the crank or crankshaft. ... . In a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluidFluid A subset of the phases of matter, fluids include liquids, gases, plasmas and, to some extent, plastic solids.... in the cylinder. In some engines, the piston also acts as a valveValve A valve is a device that regulates the flow of fluids by opening, closing, or partially obstructing various passageways.... by covering and uncovering ports in the cylinder wall. Piston engines Main article: Reciprocating engineReciprocating engine A reciprocating engine, also often known as a piston engine, is an engine that uses one or more pistons to convert pre... Internal combustion engines There are two ways that an internal combustionInternal combustion engine The internal combustion engine is a heat engine in which the burning of a fuel occurs in a confined space called a combustio... piston engine can transform combustion into motive power. These are the two-stroke cycleTwo-stroke cycle The two-stroke cycle of an internal combustion engine differs from the more common four-stroke cycle by having only two stro... and the four-stroke cycleFour-stroke cycle The four-stroke cycle of an internal combustion engine is the cycle most commonly used for automotive and industrial purpose... . A single cylinder two-stroke engine produces power every crankshaft revolution, while a single cylinder four-stroke engine produces power once every two revolutions. Older designs of small two-stroke engines produced more pollution than four stroke engines. However, modern two-stroke designs, like the Vespa ET2 Injection utilise fuel-injection and are as clean as four-strokes. Large diesel two-stroke engines, as used in ships and locomotives, have always used fuel injection and produce low emissions. One of the biggest internal combustion engines in the world, the Wärtsilä-Sulzer RTA96-CWärtsilä-Sulzer RTA96-C The Wrtsil RTA96-C turbocharged two-stroke diesel engine is currently considered the largest reciprocating engine in the wor... is a two-stroke; it is bigger than most two-story houses, has pistons nearly 1 metreMetre The metre, or meter , is a measure of length.... in diameterDiameter n geometry, a diameter of a circle is any straight line segment that passes through the center and whose endpoints are on t... and is one of the most efficient mobile engines in existence. In theory, a four-stroke engine has to be larger than a two-stroke engine to produce an equivalent amount of power. Two-stroke engines are becoming less common in developed countries these days, mainly due to manufacturer reluctance to invest in reducing two-stroke emissions. Traditionally, two-stroke engines were reputed to need more maintenance (despite exceptions like the RicardoHarry Ricardo Sir Harry Ricardo was one of the foremost engine designers and researchers in the early years of the development of the inte... Dolphin engine, and the Twingle engineTwingle engine The Twingle engine is a small-capacity two-stroke petrol engine.... s of the Trojan carTrojan (automobile) Trojan was a British automobile manufacturer; the eponymous marque thereof was produced between 1914 and 1974.... and the PuchPuch Puch was a manufacturing company located in Graz, Austria.... 250 motorcycle). Even though the simplest two-stroke engines have fewer moving parts, they could wear out faster than four-stroke engines. However fuel-injected two-strokes achieve better engine lubrication, and cooling and reliability should improve considerably. Gallery Steam engines Steam engineSteam engine A steam engine is an external combustion heat engine that makes use of the thermal energy that exists in steam, converting i... s are usually double-acting (i.e. steam pressure acts alternately on each side of the piston) and the admission and release of steam is controlled by slide valvesD slide valve The D Slide Valve was a form of rectilinear slide valve for use in rotative steam engines invented by William Murdoch and p... , piston valvePiston valve A piston valve is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a pis... s or poppet valvePoppet valve Overview A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end o... s. Air cannons There are two special type of pistons used in air cannonFacts About Air cannon Air cannon may refer to:* Air blaster, a compressed air device to unblock large storage containers for powdery material.... s: close tolerance piston and double piston. While in close tolerance piston, O-rings are used as valve but in double piston, O-rings are not used. There are some features of close tolerance piston mentioned below: Piston can swell and stick. Fits tightly in the cylinder. Tight Tolerance fit. Properties alter due to atmospheric change. Backlash may such,some of the bin material into the valve which also can cause the piston to stick. Common features of double piston: Cannot swell and stick. Fits loosely in the cylinder. No tight tolerance fit. Properties are not altered due to atmospheric change. Even if foreign material enters the valve,the double piston does not stick. See also Piston ringPiston ring A piston ring is an open-ended ring that fits into a groove on the outer diameter of a piston.... Air gunAir gun An air gun is a pneumatic gun which fires projectiles using compressed air or other high pressure gas as a propellant.... IRIS engineIRIS engine The IRIS Engine is a design for what its inventors claim is a new type of internal combustion engine.... FlamethrowerFlamethrower A flamethrower is a mechanical device designed to project a long, controllable stream of fire, hence the metaphor "to throw ... Fruit pressFruit press A Fruit press is a device used to separate fruit solids - stems, skins, seeds, pulp, leaves, and deitrus - from fruit juice.... Hydraulic cylinderHydraulic cylinder Hydraulic cylinders are mechanical actuators that supply force through a linear stroke.... KnurlingKnurling Knurling is a manufacturing process, typically conducted on a lathe, whereby a visually-attractive diamond-shaped pattern is... Slide whistleSlide whistle A slide whistle is a wind instrument consisting of a fipple like a recorder's and a tube with a piston in it.... Wankel engineWankel engine Overview The Wankel rotary engine is a type of internal combustion engine, invented by German engineer Felix Wankel, which uses a rot... (an internal combustion engine with a rotary 'piston') Steam locomotive componentsSteam locomotive components Steam locomotive nomenclature is a listing of the components found on a Steam Locomotive.... Rocket engine nozzle effectively forms the piston for rockets External links