Mitsubishi 4A3 Engine
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Mitsubishi 4A3 Engine
The Mitsubishi 4A3 engine is a range of alloy-headed inline four-cylinder engines from Mitsubishi Motors, introduced in 1993 in the sixth generation of their Mitsubishi Minica ''kei car''. It shares a bore pitch with the 3G8-series three-cylinder engines, but has a considerably shorter stroke so as to stay beneath the 660 cc limit imposed by the Kei class. A version was made available in 1997 for larger cars, and was subsequently fitted to the Mitsubishi Pistachio, (and Pajero JR), a limited production car based on the ''kei'' class Minica equipped with the company's ''Automatic Stop-Go (ASG)'' system for cutting the engine when idling. So equipped, the Pistachio was able to record fuel economy figures of . 4A30 ''Displacement'' — ''Bore x Stroke'' — ''Fuel type'' — Unleaded regular gasoline 659 cc Electronic carburettor (1993) *''Engine type'' — Inline 4-cylinder SOHC 16v *''Fuel system'' — Electro carburettor *''Compression ratio'' — 10.0:1 *''Power' ...
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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 , thus a part of the Renault–Nissan–Mitsubishi Alliance. Besides being part of the ...
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Inline-four Engine
A straight-four engine (also called an inline-four) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The vast 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 stroke occu ...
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Mitsubishi Motors Engines
This is a list of engines produced by Mitsubishi Motors since 1964, and its predecessors prior to this. Explanation of codes The Mitsubishi zaibatsu had been broken up into three companies by the US occupying forces. Automobile and truck engines were mainly built by three branches of one of these companies, Central Heavy Industries (Shin-Mitsubishi Heavy Industries from 1952). These three branches (Mizushima, Nagoya, and Kyoto Engineering Works) were established as clusters of the many small aircraft factories built during the war. Thus, Mizushima developments gained the ME code, followed by a numerical, while engines developed in Nagoya became the NE-series and Kyoto-developments were named KE. The numbers do not in any way relate to each other or across letter codes and were purely issued in order of development. In 1964 the three companies were merged into Mitsubishi Heavy Industries and eventually a new naming system emerged. Since the introduction of the 2G10 engine in October ...
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List Of Mitsubishi Engines
This is a list of engines produced by Mitsubishi Motors since 1964, and its predecessors prior to this. Explanation of codes The Mitsubishi zaibatsu had been broken up into three companies by the US occupying forces. Automobile and truck engines were mainly built by three branches of one of these companies, Central Heavy Industries (Shin-Mitsubishi Heavy Industries from 1952). These three branches (Mizushima, Nagoya, and Kyoto Engineering Works) were established as clusters of the many small aircraft factories built during the war. Thus, Mizushima developments gained the ME code, followed by a numerical, while engines developed in Nagoya became the NE-series and Kyoto-developments were named KE. The numbers do not in any way relate to each other or across letter codes and were purely issued in order of development. In 1964 the three companies were merged into Mitsubishi Heavy Industries and eventually a new naming system emerged. Since the introduction of the 2G10 engine in October ...
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Mitsubishi Pistachio
The Mitsubishi Pistachio is a three-door hatchback introduced by Mitsubishi Motors in December 1999, based on the platform of their Minica kei car. Only 50 Pistachios were sold in either Citron Yellow and Loire Green colour schemes, priced at ¥959,000, to local authorities and public corporations working to protect the environment."GDI-ASG Pistachio Limited series returns class-topping 30km/L in 10-15 mode urban driving pattern"
Mitsubishi Motors press release, December 22, 1999


Specifications

Powered by a '' 4A31'' 1094 cc

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Kei Car
Kei car (or , kanji: , "light automobile", ), known variously outside Japan as Japanese city car or Japanese microcar, is the Japanese vehicle category for the smallest highway-legal passenger cars with restricted dimensions and engine capacity. Similar Japanese categories exist for microvans, and kei trucks. These vehicles are most often the Japanese equivalent of the EU A-segment (city cars). The kei car category was created by the Japanese government in 1949, and the regulations have been revised several times since. These regulations specify a maximum vehicle size, engine capacity, and power output, so that owners may enjoy both tax and insurance benefits. In most rural areas they are also exempted from the requirement to certify that adequate parking is available for the vehicle."Owning a Ca ...
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Mitsubishi 3G8 Engine
The Mitsubishi 3G8 engine is a range of three-cylinder powerplant from Mitsubishi Motors, introduced in the fifth generation of their Mitsubishi Minica '' kei car''. In common with other contemporary engines in the class, it could be specified with many advanced technologies despite its diminutive size, including multi-valve cylinder heads and double overhead camshafts. The top-of-the-line ''Dangan ZZ'' variant was also the first kei car to benefit from turbocharging. In 1987 Mitsubishi was the first manufacturer to supercharge a kei vehicle, and in 1989 became the world's first production car to feature five valves per cylinder, ahead of similar developments by Bugatti, Audi, Ferrari and Toyota. Its 3G81 three-cylinder engine has a displacement of and the 15-valve versions feature three intake valves and two exhaust valves incorporated into each cylinder. The valves are controlled by twin overhead camshafts through roller cam followers on finger rockers with hydraulic automatic ...
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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 w ...
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Kei Car
Kei car (or , kanji: , "light automobile", ), known variously outside Japan as Japanese city car or Japanese microcar, is the Japanese vehicle category for the smallest highway-legal passenger cars with restricted dimensions and engine capacity. Similar Japanese categories exist for microvans, and kei trucks. These vehicles are most often the Japanese equivalent of the EU A-segment (city cars). The kei car category was created by the Japanese government in 1949, and the regulations have been revised several times since. These regulations specify a maximum vehicle size, engine capacity, and power output, so that owners may enjoy both tax and insurance benefits. In most rural areas they are also exempted from the requirement to certify that adequate parking is available for the vehicle."Owning a Ca ...
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Mitsubishi Minica
The is a kei car produced by Mitsubishi Motors mainly for the Japanese domestic market from 1962 to 2011. It was first built by Shin Mitsubishi Heavy-Industries, one of Mitsubishi Heavy Industries' three regional automotive companies until they were merged in 1964, and as such predates MMC itself. In Japan, it was sold at a specific retail chain called '' Galant Shop''. In 2007 and 2011, the car was replaced with the Mitsubishi eK and the Mitsubishi i. __TOC__ First generation Mitsubishi 360 The precursor of the Minica was the Mitsubishi 360, a series of light trucks introduced in April 1961. Designed for the lowest kei car vehicle tax classification, it was powered by an air-cooled 359 cc, engine, providing a lowly top speed but with a fully syncromeshed four-speed transmission. After the successful 1962 introduction of the passenger car version, called Minica, the 360 van and pickup continued alongside the Minica, sharing its development. ''360cc Light Commercial Truck' ...
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Piston Engine
A reciprocating engine, also often known as a piston engine, is typically a heat engine that uses one or more reciprocating pistons to convert high temperature and high pressure into a 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 (SI) engine, where the spark plug initiates the combustion; or a compression-ignition (CI) engine, where the air within the cylinder is compressed, thus heating it, so that the heated air ignites fuel that is injected then or earlier.''Thermodynamics: An Engineering Approach'' by Yunus A. Cengal and Michael A. Boles Common features in all types There may be one or more pistons. Each piston is inside a cylinder, into which a gas is intro ...
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Alloy
An alloy is a mixture of chemical elements of which at least one is a metal. Unlike chemical compounds with metallic bases, an alloy will retain all the properties of a metal in the resulting material, such as electrical conductivity, ductility, opacity (optics), opacity, and lustre (mineralogy), luster, but may have properties that differ from those of the pure metals, such as increased strength or hardness. In some cases, an alloy may reduce the overall cost of the material while preserving important properties. In other cases, the mixture imparts synergistic properties to the constituent metal elements such as corrosion resistance or mechanical strength. Alloys are defined by a metallic bonding character. The alloy constituents are usually measured by mass percentage for practical applications, and in Atomic ratio, atomic fraction for basic science studies. Alloys are usually classified as substitutional or interstitial alloys, depending on the atomic arrangement that forms the ...
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