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Split-single
In internal combustion engines, a split-single design is a type of 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 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 left side cylinder in the animation ... [...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] |
Garelli Motorcycles
Garelli Motorcycles was an Italian moped and motorcycle manufacturer. It was founded in 1919 by Adalberto Garelli (10 July 1886 – 13 January 1968). History At age 22, Adalberto Garelli received a degree in engineering and dedicated his work to developing and perfecting the two-stroke engine for Fiat. Garelli quit in 1911 due to Fiat's lack of enthusiasm for the two-stroke engine. He continued his own engine design between 1911 and 1914 which resulted in the 350 cc split-single cylinder engine. Garelli worked for other motorcycle manufacturers from 1914 to 1918 during which time he won a competition organized by the Royal Italian Army to design a motorcycle with which he used his 350 cc split-single engine. In 1919, Garelli constructed a 350 cc motorcycle which set a long-distance record from Milan to Naples. Rider Ettore Girardi covered the with an average of . Many famous Italian racers such as Ernesto Gnesa, Tazio Nuvolari and Achille Varzi began their racing ... [...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 motor ... [...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 d ... [...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] |
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 t ... [...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. Ther ... [...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] |
Adalberto Garelli
Adalberto Garelli (July 10, 1886 - January 13, 1968) was an Italian engineer and entrepreneur who patented a gearbox and a Split-single engine engine. Garelli founded the motorcycle company Garelli Motorcycles in 1919. Education Garelli graduated from college with a degree in engineering in 1909. Business career After graduating with an engineering degree in 1909, Garelli went to work for Fiat. Garelli left Fiat in 1911 when they did not express interest in his ideas for a 2 stroke motor. Between 1911 and 1919 Garelli worked for several motorcycle companies: Bianchi and Stucchi. During this time Garelli patented a 3 speed gearbox and a 2 stroke 2 cylinder engine. From 1911-1914, Garelli patented a split single engine which used a single connecting rod and long wrist pin which passed through both pistons. He produced a split-single motorcycle engine for road use and racing from 1918-1926. By 1919 Garelli started his own motorcycle engine company named Garelli. In the 1960's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trojan (automobile)
Trojan was a Great Britain, British automobile manufacturer producing light cars between 1914 and 1965, and light commercial vehicles for a short time. Early history The company was founded by Leslie Hayward Hounsfield (1877–1957) who went into business as a general engineer in a small workshop called the Polygon Engineering Works in Clapham, South London. He got the idea to make a simple, economical car that would be easy to drive and started design work in 1910. Hounsfield was a The Whitworth Society, Whitworth Exhibitioner in 1898 and President of the The Whitworth Society, Whitworth Society in 1946. In 1913 a prototype was completed. It had a two-stroke engine with four cylinders arranged in pairs, and each pair shared a common combustion chamber – a doubled-up version of what would later be called the "split-single" engine. The pistons in each pair drove the crankshaft together as they were coupled to it by a V-shaped connecting rod. For this arrangement to work, it is ... [...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 p ... [...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 st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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