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BMW M10
The BMW M10 is a SOHC inline-4 petrol engine which was produced by BMW from 1962-1988. It was the company's first four-cylinder engine since the BMW 309 ended production in 1936 and was introduced in the New Class sedans. The M10 was used in many BMW models, with over 3.5 million being produced during its 26 year production run. The turbocharged BMW M12 engine— used in the Formula One racing— was based on the M10 engine block and produced up to in qualifying trim. Following the introduction of the BMW M40 engine in 1987, the M10 began to be phased out. Development Baron Alex von Falkenhausen — an engineer and racing driver — designed the M10 in the late 1950s. He was asked by BMW to design an engine with a displacement of , but felt that this would be insufficient for the company's future needs. He convinced management that the minimum capacity should be , and offered an engine that could be expanded to a maximum of . Design The M10 has a cast iron block and ...
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Inline-four Engine
A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The majority of automotive four-cylinder engines use a straight-four layout (with the exceptions of the flat-four engines produced by Subaru and Porsche) and the layout is also very common in motorcycles and other machinery. Therefore the term "four-cylinder engine" is usually synonymous with straight-four engines. When a straight-four engine is installed at an inclined angle (instead of with the cylinders oriented vertically), it is sometimes called a slant-four. Between 2005 and 2008, the proportion of new vehicles sold in the United States with four-cylinder engines rose from 30% to 47%. By the 2020 model year, the share for light-duty vehicles had risen to 59%. Design A four-stroke straight-four engine always has a cylinder on its power stroke, unlike engines with fewer cylinders where there is no power st ...
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Hemispherical Combustion Chamber
A hemispherical combustion chamber is a combustion chamber in the cylinder head of an internal combustion engine with a domed "sphere, hemispheric" shape. An engine featuring this type of hemispherical chamber is known as a hemi engine. In practice, shapes less than a full hemisphere are typically employed, as are variations (or faceting in parts) of a true hemispheric profile. The primary advantage of such shapes are increased compression (leading to greater power) and very large intake and exhaust valves (allowing better flow of intake and exhaust gasses, also resulting in improved volumetric efficiency and greater power); the primary disadvantages are complex valve trains (caused by valves being placed opposite one-another in a head) and expense (of machining the heads and pistons, and additional valve train components). While hemispherical combustion chambers are still found in the 2000s multi-valve arrangements (of four and even five valves per cylinder) and the popularit ...
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Kühnle, Kopp & Kausch
Howden Turbo GmbH is a German engineering company, based in Frankenthal in the state of Rhineland-Palatinate. The company was formed after Colfax Corporation acquired Siemens Turbomachinery Equipment GmbH (STE) from Siemens in October 2017 for €195 million. The old brand name Kühnle, Kopp & Kausch has been returned to use. The Kühnle, Kopp & Kausch AG (AG KK&K) was a German mechanical engineering company based in Frankenthal. The company was acquired by Siemens and bore the name Siemens Turbomachinery Equipment GmbH (STE) until 2017. The company was renamed Howden Turbo GmbH through the sale to Colfax Corporation and Howden. History It was founded in 1899 by the merger of three family businesses by Georg Adam Kühnle, Hans Kopp and Rudolf Kausch. In 1983, the Motoren- und Turbinen-Union (MTU), Munich, acquired the majority of shares. After MTU was acquired by Daimler-Benz two years later, Kühnle, Kopp & Kausch became (indirectly) a subsidiary of Daimler-Benz. The Penske C ...
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BMW E28
The BMW E28 is the second generation of BMW 5 Series executive cars, which was produced from 1981 to 1988 and replaced the BMW 5 Series (E12), E12 5 Series. Pre-series production began in April 1981 and the car was introduced in the autumn that year. The E28 was initially produced with straight-four and straight-six petrol engines until 1983, when the 524td model became the first BMW car to be powered by a diesel engine. It was also the first 5 Series with the centre console angled towards the driver and to be available with anti-lock brakes (ABS). The first BMW M5#E28, BMW M5 was produced during the E28 generation. It was powered by the BMW M88, M88/3 and BMW S38, S38 straight-six engines. The BMW 6 Series (E24), E24 6 Series coupés were built on the E28 platform from 1982 to 1989. The E28 was replaced by the BMW 5 Series (E34), E34 5 Series in 1988. Body and interior The E28 has a self-supporting body that is welded to the body platform. The passenger cell is a safety pas ...
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BMW E30
The BMW E30 is the second generation of BMW 3 Series, which was produced from 1982 to 1994 and replaced the E21 3 Series. The model range included 2-door saloon (sometimes referred to as a coupé) and convertible body styles, as well as being the first 3 Series to be produced in 4-door saloon and wagon/estate body styles. It was powered by four-cylinder petrol, six-cylinder petrol and six-cylinder diesel engines, the latter a first for the 3 Series. The E30 325iX model was the first BMW to have all-wheel drive. The first BMW M3 model was built on the E30 platform and was powered by the high-revving BMW S14 four-cylinder petrol engine. The BMW Z1 roadster was also based on the E30 platform. Following the launch of the E36 3 Series in 1990, the E30 began to be phased out. Development Development of the E30 3 Series began in July 1976, with styling being developed under chief designer Claus Luthe with exterior styling led by Boyke Boyer. In 1978, the final design was appr ...
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BMW E12
The BMW E12 is the first generation of BMW 5 Series, 5 Series executive cars, which was produced from 1972 to 1981 and replaced the saloon models of the BMW New Class#New Class Sedans, BMW New Class range. Initial models were powered by inline-four engines, using either a carburettor or fuel-injection. A year after launch, the first model powered by a straight-six engine was introduced. By the final years of E12 production, most models used a straight-six engine. There was no M5 model for the E12, however the E12 M535i is considered to be the predecessor to the M5. The BMW 6 Series (E24), E24 6 Series coupés were built on the E12 platform up until 1982. The E12 was replaced by the BMW E28, E28 5 Series in 1981, although the tools were sent to South Africa where E12 assembly continued (with E28 interiors) until 1984. Development At the 1970 Geneva Motor Show, BMW unveiled the 2200ti Garmisch concept car, a 2-door saloon which was developed in conjunction with Gruppo Bertone, ...
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BMW E21
The BMW E21 is the first generation of the BMW 3 Series, a range of compact executive cars. The E21 was produced from June 1975 to December 1983 and replaced the BMW 02 Series. The series was exclusively built in a sporty two-door sedan / coupé body-style (except for convertibles made by Baur). Contrary to its predecessor, a 'Touring' body with a sloped rear hatch was no longer offered. Six-cylinder models were made immediately recognizable by quad round headlights, instead of the basic two. Initial models were produced with carburetted four-cylinder petrol engines of 1.6 L, 1.8 L, and 2.0 L. Fuel-injection was introduced in late 1975 on the 320i – but in 1977, a carburetted inline 6-cylinder engine replaced both the 320 and 320i models, while a detuned version of the four-cylinder injection went on sale in the United States. In 1978, the 3-series received its first fuel-injected six-cylinder in the 323i as a flagship performance model; and in 1981, a bottom end ...
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BMW 02 Series
The BMW 02 Series is a range of sporty compact executive cars produced by German automaker BMW between 1966 and 1977, based on a shortened version of the New Class Sedans. The first 02 Series produced was the 1600-2 (later renamed 1602) in 1966. In 1975, the 02 Series was replaced by the E21 3 Series (except for the 1502 model, which continued until 1977). Overview In the mid-1960s BMW perceived a market for a smaller, more affordable, two-door version of its four-door New Class executive sedan. Corporate design director Wilhelm Hofmeister assigned the project to staffers Georg Bertram and Manfred Rennen, who produced an attractive and sporty car 5 cm (2 in) shorter in wheelbase and some 25 cm (10 in) shorter in length, mainly by shortening the rear deck. The resulting 1966 production 1600-2 was less well-appointed than the New Class, but lighter, faster, and better handling. The larger displacement 2002 directly derived from it in 1968 would go on ...
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Compression Ratio
The compression ratio is the ratio between the maximum and minimum volume during the compression stage of the power cycle in a piston or Wankel engine. A fundamental specification for such engines, it can be measured in two different ways. The simpler way is the static compression ratio: in a reciprocating engine, this is the ratio of the volume of the cylinder when the piston is at the bottom of its stroke to that volume when the piston is at the top of its stroke. The dynamic compression ratio is a more advanced calculation which also takes into account gases entering and exiting the cylinder during the compression phase. Effect and typical ratios A high compression ratio is desirable because it allows an engine to extract more mechanical energy from a given mass of air–fuel mixture due to its higher thermal efficiency. This occurs because internal combustion engines are heat engines, and higher compression ratios permit the same combustion temperature to be reached wit ...
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Turbocharger
In an internal combustion engine, a turbocharger (also known as a turbo or a turbosupercharger) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake air, forcing more air into the engine in order to produce more power for a given displacement.
Turbochargers are distinguished from superchargers in that a turbocharger is powered by the kinetic energy of the exhaust gases, whereas a is mechanically powered (usually by a belt from the engine's crankshaft). However, up until the mid-20th century, a turbocharger was called a "turbosupercharger" and was considered a type of supercharger.


History

Prior to the inv ...
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Teknikens Värld
''Teknikens värld'' () is a leading motor magazine published in Stockholm, Sweden. History and profile ''Teknikens Värld'' was founded in 1948. The magazine is owned by Bonnier Group. Its publisher is Bonnier Tidskrifter AB, a subsidiary of the Group. The headquarters of the magazine is in Stockholm. Daniel Frodin is the editor-in-chief. The magazine is known for their thorough automobile tests and gained worldwide attention in 1997 when the First generation Mercedes-Benz A-Class overturned in their moose test The evasive manoeuvre test (; colloquial: moose test or elk test; Swedish: ''Älgtest'', German: ''Elchtest'') is performed to determine how well a certain vehicle evades a suddenly appearing obstacle. This test has been standardized in ISO 388 .... It primarily features automotive news, reviews and test drives of passenger cars from various segments. Books are also published under the name, e.g. annual new and used cars guides. In 2009 ''Teknikens värld'' had a c ...
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Switzerland
Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland is geographically divided among the Swiss Plateau, the Swiss Alps, Alps and the Jura Mountains, Jura; the Alps occupy the greater part of the territory, whereas most of the country's Demographics of Switzerland, 9 million people are concentrated on the plateau, which hosts List of cities in Switzerland, its largest cities and economic centres, including Zurich, Geneva, and Lausanne. Switzerland is a federal republic composed of Cantons of Switzerland, 26 cantons, with federal authorities based in Bern. It has four main linguistic and cultural regions: German, French, Italian and Romansh language, Romansh. Although most Swiss are German-speaking, national identity is fairly cohesive, being rooted in a common historical background, shared ...
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