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Twingle
In internal combustion engines, a split-single design is a type of two-stroke engine, two-stroke where two cylinders share a single combustion chamber. The first production split-single engine was built in 1918 and the design was used on several motorcycles and cars until the mid 1950s, although one company continued producing split-single engines for motorcycles until 1970. During this time, the design was also occasionally used for engines with four or more cylinders. Principle of operation The split-single uses a two-stroke engine, two-stroke cycle (i.e. where every downward stroke produces power) with the following phases: # Pistons travel upwards, compressing the fuel-air mixture in both cylinders. A spark plug ignites the mixture (in the right side cylinder in the animation) when the pistons are near the top of the cylinders. # Pressure from the ignited air-fuel mixture pushes both pistons downwards. Near the bottom of the travel, an exhaust port becomes exposed (in the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puch
Puch () is a manufacturing company located in Graz, Austria. The company was founded in 1899 by the industrialist Johann Puch and produced automobiles, bicycles, mopeds, and motorcycles. It was a subsidiary of the large Steyr-Daimler-Puch conglomerate. History Foundation From 1889 Johann Puch (1862–1914) worked as an agent for Humber vehicles and manufacturer of ''Styria'' safety bicycles in a small workshop in Graz and in 1890 he founded his first company, Johann Puch & Comp., employing 34 workers. Cyclists like Josef Fischer, winning the first edition of Paris–Roubaix in 1896, popularized ''Styria'' bicycles which were even exported to England and France. By 1895, Puch already employed more than 300 workers producing about 6000 bikes a year. In 1897 Puch left the company after a dispute with his business partners. Two years later he founded the First Styrian Bicycle Factory AG (''Erste Steiermärkische Fahrradfabrik AG'') in Graz. Puch's company became successful throu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-stroke Engine
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of the crankshaft. A four-stroke engine requires four strokes of the piston to complete a power cycle during two crankshaft revolutions. In a two-stroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust (or scavenging) functions occurring at the same time. Two-stroke engines often have a high power-to-weight ratio, power being available in a narrow range of rotational speeds called the power band. Two-stroke engines have fewer moving parts than four-stroke engines. History The first commercial two-stroke engine involving cylinder compression is attributed to Scottish engineer Dugald Clerk, who patented his design in 1881. However, unlike most later two-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puch 250 SGS
The Puch 250 SGS (Schwing-Gabel-Sport) is a motorcycle that was manufactured by the Austrian Steyr Daimler Puch AG's Puch division in Thondorf near Graz. The motorcycle is powered by a split-single two-stroke engine (two pistons sharing a single combustion chamber). It was marketed in the United States by Sears as the "Allstate 250" or "Twingle", with the model number SR 250, and sold primarily via the Sears catalog. It was a common "first motorcycle" for many riders. A total of 38,584 Puch 250 SGS motorcycles were produced between its launch on October 1, 1953 and end of production in 1969, with its final year of sale in 1970. See also * Puch * Split-single * List of motorcycles by type of engine * Sears Dreadnought (1910s m. bike) * List of motorcycles of the 1950s This a listing of motorcycles of the 1950s, including those on sale, introduced, or otherwise relevant in this period. * AJS 18 (1949-1963) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two Stroke Valveless Engine, Working Cycle (Autocar Handbook, Ninth Edition)
2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and only even prime number. Because it forms the basis of a duality, it has religious and spiritual significance in many cultures. Evolution Arabic digit The digit used in the modern Western world to represent the number 2 traces its roots back to the Indic Brahmic script, where "2" was written as two horizontal lines. The modern Chinese and Japanese languages (and Korean Hanja) still use this method. The Gupta script rotated the two lines 45 degrees, making them diagonal. The top line was sometimes also shortened and had its bottom end curve towards the center of the bottom line. In the Nagari script, the top line was written more like a curve connecting to the bottom line. In the Arabic Ghubar writing, the bottom line was completely vertical, and the digit looked like a dotless closing question mark. Restoring the bottom line to its original horizontal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scuderi Engine
The Scuderi engine, formally called the Scuderi Split Cycle Engine, is a split cycle, internal combustion engine invented by Carmelo J. Scuderi (April 13, 1925 – October 16, 2002). Scuderi Group, an engineering and licensing company based in West Springfield, Massachusetts and founded by Carmelo Scuderi's children, is testing a working prototype of the engine that was officially unveiled to the public on April 20, 2009. Scuderi Group released video footage of a naturally aspirated one-liter prototype of the Scuderi engine firing on its own in the laboratory in October, 2009. Design Scuderi engines have paired cylinders, each of which performs two of the tasks (strokes) of a conventional engine. The compression cylinder performs intake and compression. The power cylinder performs combustion and exhaust. Compressed air is transferred from the compression cylinder to the power cylinder through a crossover passage. Fuel is then injected and fired to produce the power str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Motorcycles By Type Of Engine
List of motorcycles by type of engine is a list of motorcycles by the type of motorcycle engine used by the vehicle, such as by the number of cylinders or configuration. A transverse engine is an engine mounted in a vehicle so that the engine's crankshaft axis is perpendicular to the direction of travel. In a longitudinal engine configuration, the engine's crankshaft axis is parallel with the direction of travel. However, the description of the orientation of "V" and "flat" motorcycle engines differs from this convention. Motorcycles with a V-twin engine mounted with its crankshaft mounted in line with the frame, e.g. the Honda CX series, are said to have "transverse" engines, while motorcycles with a V-twin mounted with its crankshaft mounted perpendicular to the frame, e.g. most Harley-Davidsons, are said to have "longitudinal" engines. This convention uses the longest horizontal dimension (length or width) of the engine as its axis instead of the line of the crankshaft. There a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercharger
In an internal combustion engine, a supercharger compresses the intake gas, forcing more air into the engine in order to produce more power for a given displacement. The current categorisation is that a supercharger is a form of forced induction that is mechanically powered (usually by a belt from the engine's crankshaft), as opposed to a turbocharger, which is powered by the kinetic energy of the exhaust gasses. However, up until the mid-20th century, a turbocharger was called a "turbosupercharger" and was considered a type of supercharger. The first supercharged engine was built in 1878, with usage in aircraft engines beginning in the 1910s and usage in car engines beginning in the 1920s. In piston engines used by aircraft, supercharging was often used to compensate for the lower air density at high altitudes. Supercharging is less commonly used in the 21st century, as manufacturers have shifted to turbochargers to reduce fuel consumption and/or increase power outputs. Des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triumph (TWN)
Triumph-Werke Nürnberg AG or TWN, was a German bicycle and motorcycle company. In 1886, Siegfried Bettmann founded the Triumph bicycle factory in Coventry, England, and in 1896 he founded a second bicycle factory in his native Nuremberg, Germany, under the same Triumph name. Both factories branched out into making motorcycles: the Coventry factory in 1902 and the Nuremberg factory in 1903. In its early decades the Nuremberg factory produced models with the same 499 cc and 545 cc four-stroke engines as its sister plant in Coventry. Confusion between motorcycles produced by the Coventry and Nuremberg Triumph companies led to the latter's products being renamed "Orial" for certain export markets. However, in the 1920s there was already an Orial motorcycle maker in Lyon, France, so the Nuremberg motorcycles were renamed again as "TWN", standing for ''Triumph Werke Nürnberg''. After 1913 the English and German factories diverged, with the Nuremberg works making motorc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isetta
The Isetta is an Italian-designed microcar built under license in a number of different countries, including Argentina, Spain, Belgium, France, Brazil, Germany, and the United Kingdom. Because of its egg shape and bubble-like windows, it became known as a bubble car, a name also given to other similar vehicles. In 1955, the BMW Isetta became the world's first mass-production car to achieve a fuel consumption of . It was the top-selling single-cylinder car in the world, with 161,728 units sold. Initially manufactured by the Italian firm Iso SpA, the name ''Isetta'' is the Italian diminutive form of ''Iso'', meaning "little Iso". The Isetta was featured on “Family Matters” as Steve Urkel’s car starting in season four. __TOC__ Iso Isetta (Italy) The car originated with the Italian firm of Iso SpA. In the early 1950s the company was building refrigerators, motor scooters and small three-wheeled trucks. Iso's owner, Renzo Rivolta, decided to build a small car for mass di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorcycles
A motorcycle (motorbike, bike, or trike (if three-wheeled)) is a two or three-wheeled motor vehicle steered by a handlebar. Motorcycle design varies greatly to suit a range of different purposes: long-distance travel, commuting, cruising, sport (including racing), and off-road riding. Motorcycling is riding a motorcycle and being involved in other related social activity such as joining a motorcycle club and attending motorcycle rallies. The 1885 Daimler Reitwagen made by Gottlieb Daimler and Wilhelm Maybach in Germany was the first internal combustion, petroleum-fueled motorcycle. In 1894, Hildebrand & Wolfmüller became the first series production motorcycle. Globally, motorcycles are comparably popular to cars as a method of transport. In 2021, approximately 58.6 million new motorcycles were sold around the world, fewer than the 66.7 million cars sold over the same period. In 2014, the three top motorcycle producers globally by volume were Honda (28%), Yam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EMC Motorcycles
EMC Motorcycles or the Ehrlich Motor Co was a British motorcycle manufacturer. Based in Isleworth, the business was founded by Joseph Ehrlich who emigrated to the United Kingdom from Austria in the 1930s. A specialist engine tuner, Joe Ehrlich made unique two-stroke motorcycles. EMC stopped mass production in 1952 but Ehrlich used his knowledge of German technology to re-engineer the DKW Rennsporte Ladempumpe production racers, which he developed as one-off EMC racing bikes and won several events over the next 25 years. The EMC 125 cc racer was considered among the fastest of its size in the early 1960s. Ehrlich left in 1967 and the company was wound up in 1977. History Dr Joseph Ehrlich was a wealthy Austrian and keen motorcycle enthusiast who became the acknowledged authority on two-stroke single racing bikes. Ehrlich moved to the UK and set up EMC after the Second World War with a factory at Isleworth. Production focused on a 350 cc split-single motorcycle based ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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