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4G64
The Mitsubishi Sirius or 4G6/4D6 engine is the name of one of Mitsubishi Motors' four series of inline-four automobile engines, along with Astron, Orion, and Saturn. The 4G6 gasoline engines were the favoured performance variant for Mitsubishi. The ''4G61T'' powered their Colt Turbo, while the ''4G63T'', first introduced in the 1980 Lancer EX 2000 Turbo, went on to see service in the Sapporo and Starion coupés during the so-called "turbo era" of the 1980s, before creating for itself an illustrious motorsport heritage as the powerplant under the hood of the World Rally Championship-winning Lancer Evolution. A UK-market Evo known as the FQ400 had a version of the ''Sirius'', making it the most powerful car ever sold by Mitsubishi. The 4D6 diesel engines supplemented the larger 4D5. Bore pitch is 93 mm. 4G61 (1.6 liters) The 4G61 displaces with bore/ full length stroke of . This engine was always DOHC 16-valve and used either Multi-point (MPFI) or Electronic Cont ...
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Mitsubishi Astron Engine
The Mitsubishi Astron or 4G5/4D5 engine, is a series of straight-four internal combustion engines first built by Mitsubishi Motors in 1972. Engine displacement ranged from 1.8 to 2.6 litres, making it one of the largest four-cylinder engines of its time. Design It employed a hemispherical cylinder head, chain-driven single overhead camshaft (SOHC) and eight valves (two per cylinder). United States passenger car versions had a small secondary intake valve referred to as the "Jet Valve". This valve induced swirl in the intake charge, enabling the use of leaner fuel/air mixtures for lower emissions. It was designed as a cartridge containing the valve spring and seat which simply screwed into a threaded hole in the head, similar to a spark plug but inside the cam cover. The rocker arms for the intake valve were widened on the valve end to accommodate the cartridge, which was equipped with a very soft valve spring in order to avoid wear on the camshaft intake lobe. Modifications to ...
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Mitsubishi Motors
is a Japanese multinational automobile manufacturer headquartered in Minato, Tokyo, Japan.Corporate Profile
, Mitsubishi Motors website, 19 June 2008
In 2011, Mitsubishi Motors was the sixth-largest Japanese and the 19th-largest worldwide by production. Since October 2016, Mitsubishi has been one-third (34%) owned by Nissan, thus a part of the Renault–Nissan–Mitsubishi Alliance. Besides being part of the Renault–Nissan–Mitsubishi A ...
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Turbocharged
In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress 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 turbocharger is powered by the kinetic energy of the exhaust gasses, 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 invention of the turbocharger,
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Fuel Injection
Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All compression-ignition engines (e.g. diesel engines), and many spark-ignition engines (i.e. petrol engines, such as Otto or Wankel), use fuel injection of one kind or another. Mass-produced diesel engines for passenger cars (such as the Mercedes-Benz OM 138) became available in the late 1930s and early 1940s, being the first fuel-injected engines for passenger car use. In passenger car petrol engines, fuel injection was introduced in the early 1950s and gradually gained prevalence until it had largely replaced carburettors by the early 1990s. The primary difference between carburetion and fuel injection is that fuel injection atomizes the fuel through a small nozzle under high pressure, while a carburettor relies on suction created by inta ...
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Multi-valve
In automotive engineering a multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better breathing and may be able to operate at higher revolutions per minute (RPM) than a two-valve engine, delivering more power. Multi-valve rationale Multi-valve engine design A multi-valve engine design has three, four, or five valves per cylinder to achieve improved performance. Any four-stroke internal combustion engine needs at least two valves per cylinder: one for ''intake'' of air (and often fuel), and another for ''exhaust'' of combustion gases. Adding more valves increases valve area and improves the flow of intake and exhaust gases, thereby enhancing combustion, volumetric efficiency, and power output. Multi-valve geometry allows the spark plug to be ideally located within the combustion chamber for optimal flame propagation. Multi-valve engines tend to have smaller valves that have lower reciprocating mass, which can re ...
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Bore Pitch
Bore pitch is the distance between the centerline of a cylinder bore to the centerline of the next cylinder bore adjacent to it in an internal combustion engine. It's also referred to as the "mean cylinder width", "bore spacing", "bore center distance" and "cylinder spacing". The bore pitch is always larger than the inside diameter of the cylinder (the bore and piston diameter) since it includes the thickness of both cylinder walls and any water passage separating them. This is one of the first dimensions required when developing a new engine, since it limits maximum cylinder size (and therefore, indirectly, maximum displacement), and determines the length of the engine (L4, 6, 8) or of that bank of cylinders (V6, V8 etc.). In addition, the positions of the main bearings must be between individual cylinders (L4 with 5 main bearings, or L6 with 7 main bearings - only one rod journal between main bearings), or between adjacent pairs of cylinders (L4 with 3 main bearings, L6 or V6 ...
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United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many List of islands of the United Kingdom, smaller islands within the British Isles. Northern Ireland shares Republic of Ireland–United Kingdom border, a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between ...
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Mitsubishi Lancer Evolution
The Mitsubishi Lancer Evolution, popularly referred to as the 'Evo', is a sports sedan and rally car based on the Lancer that was manufactured by Japanese manufacturer Mitsubishi Motors from 1992 until 2016. There have been ten official versions to date, and the designation of each model is most commonly a Roman numeral. All generations use two-litre intercooled turbo inline four-cylinder engines and all-wheel drive systems."Development of Center-Differential Control System for High Performance Four-Wheel Drive Vehicles"
, Mitsubishi Motors Technology Review 2001, no.13, pp. 61–66
The Evolution was originally intended only for Japanese markets, but demand on the
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World Rally Championship
The World Rally Championship (abbreviated as WRC) is the highest level of global competition in the motorsport discipline of rallying, owned and governed by the FIA. There are separate championships for drivers, co-drivers, manufacturers and teams. The series currently consists of 13 three to four-day rally events driven on surfaces ranging from gravel and tarmac to snow and ice. Each rally is usually split into 15–25 special stages which are run against the clock on up to 350 kilometres of closed roads. Drivers Sébastien Loeb, Sébastien Ogier, Juha Kankkunen, Tommi Mäkinen and Colin McRae all became WRC champions. Other drivers who became well known primarily through their WRC careers include Michèle Mouton, Henri Toivonen, Jari-Matti Latvala and Mikko Hirvonen. Rallies that have frequently appeared in the championship have included Monte Carlo Rally, Tour de Corse, Sanremo, Acropolis, Safari Rally, and national rallies of Great Britain, Finland, New Zealand, Au ...
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Mitsubishi Starion
The Mitsubishi Starion is a two-door, turbocharged four-cylinder rear-wheel drive four-seat hatchback sports car manufactured and marketed by Mitsubishi from 1982-1989 — with badge engineered variants marketed in North America as the Conquest, under the Chrysler, Dodge, and Plymouth brands. The Starion was one of the first modern Japanese turbocharged performance automobiles with electronic fuel injection, following the earlier Isuzu 117 Coupé. Overview Mitsubishi began marketing the Starion in 1982, during a period in which a number of Japanese grand tourer (GT) sports cars were available, including the Nissan Z cars, Mazda RX-7, Toyota Supra and to a lesser extent, the Honda Prelude, Isuzu Piazza and Subaru XT. The Starion was marketed in the US as the Mitsubishi Starion and badge engineered variants of it were marketed as the Dodge, Plymouth and Chrysler Conquest. In the UK it was sold as the Colt Starion. It was manufactured in two body configurations, a narrowb ...
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Mitsubishi Sapporo
The Mitsubishi Sapporo name has been used on two derivations of the Mitsubishi Galant: * 1978–1984 — This rear-wheel drive hardtop coupé was based on the third generation Galant. In Japan it was sold as the " Mitsubishi Galant Lambda", while European and South American export markets received it with the "Sapporo" label. In the US it was sold as Dodge Challenger. It received a thorough facelift in 1980. * 1987–1990 — In the European market, the hardtop sedan version of the front-wheel drive fifth generation Galant was sold as the Sapporo. File:Mitsubishi Sapporo 2000 GSL 1982 (15149987908).jpg, Coupe (1978–1984) File:Mitsubishi Sapporo front 20080301.jpg, Sedan (Europe, 1987–1990) References {{Mitsubishi cars 1960-79 Sapporo ( ain, サッ・ポロ・ペッ, Satporopet, lit=Dry, Great River) is a city in Japan. It is the largest city north of Tokyo and the largest city on Hokkaido, the northernmost main island of the country. It ranks as the fifth mos ...
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Mitsubishi Lancer
The Mitsubishi Lancer is an automobile produced by the Japanese manufacturer Mitsubishi Motors since 1973. The Lancer has been marketed as the Colt Lancer, Dodge Colt, Plymouth Colt, Chrysler Valiant Lancer, Chrysler Lancer, Eagle Summit, Hindustan Lancer, Soueast Lioncel, and Mitsubishi Mirage in various countries at different times, and has been sold as the Mitsubishi Galant Fortis in Japan since 2007. It has also been sold as Mitsubishi Lancer Fortis in Taiwan with a different facelift than the Galant Fortis. In Japan, it was sold at a specific retail chain called Car Plaza. Between its introduction in 1973 and 2008, over six million units were sold. There have been nine generations of Lancers before the current model. Mitsubishi ended production of the Lancer in August 2017 worldwide, with the exception of Taiwan and China. An extensive facelift was given to the car by Pininfarina's Chinese offices. First generation (A70; 1973) The first Lancer (A70) was launche ...
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