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Flat-eight Engine
A flat-eight engine, also called a horizontally-opposed eight, is an eight-cylinder piston engine with two banks of four inline cylinders, one on each side of a central crankshaft, 180° apart. In a flat-eight engine, the connecting rods for corresponding pistons from the left and right banks may share a crankshaft journal. A boxer-eight engine is a special case of a flat-eight where each piston's connecting rod has its own journal, and each pair of opposed pistons moves inwards or outwards at the same time. Flat-eight engines have been used in automotive, motorcycle, aircraft, and marine applications. Design The advantages of a flat-eight engine are its minimal length and low centre of mass. A disadvantage is its greater width compared to a V8 or inline-eight engine. A flat-eight engine is able to have perfect primary balance and secondary balance. A boxer-eight engine has a single piston per crankpin, which increases the linear offset between the cylinder banks. A boxer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Piston Engine
A reciprocating engine, more often known as a piston engine, is a heat engine that uses one or more Reciprocating motion, reciprocating pistons to convert high temperature and high pressure into a Circular motion, rotating motion. This article describes the common features of all types. The main types are: the internal combustion engine, used extensively in motor vehicles; the steam engine, the mainstay of the Industrial Revolution; and the Stirling engine for niche applications. Internal combustion engines are further classified in two ways: either a spark-ignition engine, spark-ignition (SI) engine, where the spark plug initiates the combustion; or a compression-ignition engine, compression-ignition (CI) engine, where the air within the cylinder is compressed, Adiabatic process, thus heating it, so that the heated air ignites fuel that is injected diesel engine, then or hot-bulb engine, earlier.''Thermodynamics: An Engineering Approach'' by Yunus A. Cengal and Michael A. Boles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Porsche 906
The Porsche 906 or Carrera 6 is a street-legal racing car from Porsche. It was announced in January 1966 and 50 examples were subsequently produced, thus meeting the homologation requirements of the FIA's new Group 4 Sports Car category to the number. The type would also compete in modified form in the Group 6 Sports Prototype class. History Prior to the Porsche 906 was the 904 which achieved many racing victories. At the age of 28, Ferdinand Piëch, the grandson of Ferdinand Porsche was given the important job of being in charge of the development of the new Porsche racing cars. His goal for recreating the 904 to the new 906 was to make it as lightweight as can be. This would mean stripping all of the heavy steel from the body and using unstressed fiberglass instead. Constructing the new car with the fiberglass helped with things such as structural support as well as looks because it was all placed by hand instead of having an uneven paint job done to it. The finished p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Jabiru 5100
The Jabiru 5100 is a lightweight four-stroke horizontally opposed Flat-eight engine, flat-eight air-cooled aircraft engine, manufactured by Jabiru Aircraft. Design and development The engine is direct-drive and is fitted with alternators, Muffler, silencers, vacuum pump drives and dual-ignition systems as standard equipment. It was developed from the Jabiru 2200 and Jabiru 3300, 3300 aeroengines, but whilst these earlier modular-design engines share the same bore and stroke (97.5mm x 74 mm), the 5100 flat-eight shares only the 97.5mm bore, and the stroke is increased from 74mm to 85mm. In November 2014 the Australian Civil Aviation Safety Authority proposed restricting all Jabiru-powered aircraft to day-visual flight rules only, without passengers or solo students and within gliding distance of a safe place to land due to the engine line's safety record. Both the manufacturer and Recreational Aviation Australia opposed the restrictions as unnecessary and unwarranted. The f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Continental Tiara Series
The Continental Tiara series are a family of air-cooled, horizontally opposed aircraft engines. Designed and built by Continental Motors/TCM, the Tiara series were commercially unsuccessful, costing the company millions of dollars. Design and development Continental began development of the Tiara series in 1965.Leyes, p.119 At the time, CAE, Continental Motor's turbine engine subsidiary, had developed the T65, a small turboshaft engine which was being considered by Bell for its new Model 206 helicopter. Faced with having to fund the production tooling for the T65 in order to keep the price reasonable, or funding the Tiara series, Continental's corporate management chose to invest in the Tiaras. While the Tiara series were basically traditional boxer engines, they did have some unique features.Gunston, p.191 The engines had high rotational speeds, 0.5:1 gearing was used to reduce propeller speed, with the camshaft forming an extension of the propeller shaft. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Lycoming IO-720
The Lycoming IO-720 engine is a large displacement, horizontally opposed, eight-cylinder aircraft engine featuring four cylinders per side, manufactured by Lycoming Engines. There is no carbureted version of the engine, which would have been designated O-720 and therefore the base model is the IO-720. The IO-720 is the only flat-eight configuration aircraft engine currently in production. Design and development The engine has a fuel injection system which schedules fuel flow proportionally to the airflow, with fuel vaporization occurring at the intake ports. The engine has a displacement of 722 cubic inches (11.8 litres) and produces . The cylinders have air-cooled heads cast from aluminum alloy with a fully machined combustion chamber. The first IO-720 was type certified on 25 October 1961 to the CAR 13 standard as amended to 15 June 1956 including 13-1, 13-2, 13-3, 13-4. In 2009 a new IO-720-A1B cost US$ The United States dollar (Currency symbol, symbol: Dollar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Lycoming GSO-580
The Lycoming GSO-580 is a family of eight-cylinder horizontally opposed, supercharged, carburetor-equipped aircraft engines for both airplanes and helicopters, manufactured by Lycoming Engines in the late 1950s and early 1960s. The family includes the original GSO-580 fixed-wing aircraft engine series, as well as the later SO-580 and VSO-580 helicopter engines. There is no non-supercharged, non-geared version of the engine, which would have been designated O-580 and therefore the base model is the GSO-580. Design and development The GSO-580 family of engines covers a range from to . All have a displacement of and the cylinders have air-cooled heads. Compared to other horizontally opposed engines of similar displacement this family of engines produces high output power by supercharging and high maximum rpm, at the cost of higher weight. The GSO-580 series was certified under Type Certificate 256, while the SO-580 and VSO-580 series were certified under type certificate 285. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Touring Motorcycle
A touring motorcycle is a type of motorcycle designed for Motorcycle touring, touring. Although almost any motorcycle can be used for this purpose, manufacturers have developed specific models designed to address the particular needs of these riders. Touring motorcycles commonly have large displacement Motorcycle fairing, fairings and windshields that offer a high degree of weather and wind protection, large-capacity fuel tanks for long ranges between fill-ups, engines with a great deal of low-end horsepower, and a more relaxed, Motorcycle#Motorcycle rider postures, upright seating position than sport bikes. Particularly in the US, touring motorcycles may be given names such as ''bagger'', ''full bagger'', ''full dresser'', ''full dress tourer'', or ''dresser''. These monikers (often used disparagingly or jocularly) originally applied to cruiser (motorcycle), cruisers with full sets of saddlebags or panniers such as Harley-Davidsons; but these terms may now refer to any touring mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Souo S2000
The Great Wall Souo S2000 () is a touring motorcycle produced by Great Wall Souo Moto, a sub brand of Great Wall Motor, since 2024. It is the first motorcycle made by the company, and has a boxer-eight engine, which is the world's first flat-eight engine in a motorcycle application. The model was revealed at the Beijing International Motorcycle Exhibition on 17 May 2024, and pre-orders opened in October 2024 before initial limited deliveries began in 2025, after which it launched at Auto Shanghai 2025 on 23 April 2025. Overview The S2000's development was led by Great Wall chairman Wei Jianjun, who considers it as his passion project as he simply loves motorcycles. The S2000 comes in three versions: the base ST which starts at 218,800 yuan (30,700 USD); the upgraded GL, with a rear seat and three luggage cases; and the Founder Edition, which features matte black exterior elements with gold accents and is limited to 88 units. The first batch of S2000s was limited to 200 units ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Great Wall Motor
Great Wall Motor Company Limited ( zh, s=长城汽车, hp=Chángchéng Qìchē), trading as GWM, is a Chinese automobile manufacturer headquartered in Baoding, Hebei, China. Named after the Great Wall of China, the company largely produces sport-utility vehicles (SUVs) and Pickup truck, pick-up trucks, as well as trucks. It is one of the top ten Chinese automobile manufacturers, with 1.23 million vehicles sold globally in 2024. GWM was founded in 1984 as a small manufacturer partly owned by a local government in Hebei. Wei Jianjun, GWM's current chairman was appointed as the company director in 1990, and grew the company as one of the leading pickup truck manufacturers in China. In 1998, the company was privatized and went public on the Hong Kong Stock Exchange in 2003. The company manufactures and sells vehicles under multiple brands, including GWM, Haval (marque), Haval, Wey (marque), Wey, Tank (marque), Tank, Poer, and Ora (marque), Ora. In addition to automobiles, it produces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Porsche 914
The Porsche 914 or VW-Porsche 914 is a mid-engined sports car designed, manufactured and marketed collaboratively by Volkswagen and Porsche from 1969 until 1976. It was only available as a targa-topped two-seat roadster powered by either a flat-4 or flat-six engine. History Pre-development By the late 1960s, both Volkswagen and Porsche were in need of new models; Porsche was looking for a replacement for their entry-level 912, and Volkswagen wanted a new range-topping sports coupé to replace the Volkswagen Type 34 Karmann Ghia coupé. At the time the majority of Volkswagen's development work was handled by Porsche as part of an agreement that dated back to Porsche's founding. Volkswagen needed to contract out one last project to Porsche to fulfill the contract, and decided to make the 914 that project. Ferdinand Piëch, who was in charge of research and development at Porsche, was put in charge of the 914 project. In 1966 and 1967, German company Gugelot Design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Porsche 908
The Porsche 908 was a racing car from Porsche, introduced in 1968 to continue the Porsche 906- Porsche 910- Porsche 907 series of models designed by Helmuth Bott (chassis) and Hans Mezger (engine) under the leadership of racing chief Ferdinand Piëch. As the FIA had announced rule changes for Group 6 prototype-sports cars limiting engine displacement to 3,000 cc, as in Formula One, Porsche designed the 908 as the first Porsche sports car to have an engine with the maximum size allowed. The previous Porsche 907 only had a 2,200 cc Type 771/1 flat-eight engine developing . The new 3-litre Type 908 flat-eight produced at 8,400 rpm. Being traditionally air-cooled and with only two valves per cylinder, it still had less power compared to more modern F1 designs which delivered over , but were not suited to endurance racing. The 908 originally was a closed coupe to provide low drag at fast tracks, but from 1969 on was mainly raced as the 908/2, a lighter open spyder. A more comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |