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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 long-stroke, version was made available in 1997 for larger-engined kei derivatives, and was subsequently fitted to the Mitsubishi Pistachio, 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. A lean-burn variant, using Mitsubishi's "Vertical Vortex" system, appeared on the new, second-generation Pajero Mini in October 1998. The new engine cut emis ...
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Mitsubishi Motors
is a Japanese Multinational corporation, multinational Automotive industry, automobile manufacturer headquartered in Minato, Tokyo, Japan.Corporate Profile
, Mitsubishi Motors website, 19 June 2008
In 2011, Mitsubishi Motors was the sixth-largest Japanese automaker and the 19th-largest worldwide by production. Since October 2016, Mitsubishi has been one-third (34%) owned by Nissan, and included in the Renault–Nissan–Mitsubishi Alliance. Besides being part of the Renault–Nissan–Mitsubishi Alliance, it is also a part of Mitsubishi Group, Mitsubishi ''keiretsu'', formerly the biggest industrial group in Japan. The company was originally formed in 1970 from the automotive division of Mitsubishi Heavy Industries.
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Kei Car
Kei car is the smallest category of Japanese expressway-legal motor vehicles. The term ''kei'' is a shortening of , (kanji: ), which translates to English as "light vehicle" (). With restricted dimensions and engine specifications, owners enjoy lower tax and insurance rates, leading to a lower overall ownership cost. In most rural areas, they are also exempt from the general Japanese parking-space ownership requirement to legally buy a motor vehicle at all, as street parking is generally restricted in Japan. Japan's carmakers also make microvans and kei trucks within this legal category. Kei cars are favored by both the elderly and younger demographics, including youths and young families, due to their affordability and ease of use. The ''kei'' category was created by the Japanese government in 1949, to stimulate both car ownership and growth of Japan's car industry. The regulations were revised multiple times until 1998, but since October 1998, the law consistently spe ...
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Mitsubishi Motors Engines
This is a list of Internal combustion engine, 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 ...
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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 Town Box
The Mitsubishi Town Box is a kei car (Town Box) and minivan (Town Box Wide) produced for the Japanese domestic market, Japanese domestic market (JDM) by the Japanese automaker Mitsubishi Motors. It was initially available with the alloy-cylinder head, headed ''Mitsubishi 4A3 engine, 4A30'' 657 cc inline-four engine, but switched to the ''Mitsubishi 3G8 engine, 3G83'' 659 cc straight-three engine in 2002. From June 1999 until August 2001, a slightly larger version of the same vehicle powered by a ''Mitsubishi 4A3 engine, 4A31'' 1.1 L straight-four, the Mitsubishi Town Box Wide, was also available. The first generation Town Box was discontinued in November 2011, ending the twelve-year production run. The nameplate returned in February 2014 on a rebadged version of the Suzuki Carry, Suzuki Every Wagon. The first generation Town Box was also sold in Japan as the Nissan Clipper, Nissan Clipper Rio, while the Town Box Wide was also produced under licence in Malaysia as the ...
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Mitsubishi Toppo
The is a light recreational vehicle (RV) produced by Mitsubishi Motors from 1990 until 2004 and then from 2008 until 2013. The original version was derived from their Minica kei car and the first two generations were called the Minica Toppo. The name is a portmanteau of the English "top" (roof) and the Japanese "noppo" (lanky). Originally named the Mitsubishi Minica Toppo, a retro-styled variant was introduced in 1996 called the Mitsubishi Minica Toppo Town Bee. In 1998 a new generation was launched; now referred to as the Mitsubishi Toppo BJ ("Big Joy"). A larger derivative, the Mitsubishi Toppo BJ Wide was introduced in 1999. The model was replaced by the new eK in 2001, although it was sold alongside the eK until being discontinued in 2004. The Toppo was reintroduced in 2008; now referred to simply as the Mitsubishi Toppo. In Japan, it was sold at a specific retail chain called '' Galant Shop''. __TOC__ Minica Toppo (first generation) Based on the Minica, the tall three- ...
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Mitsubishi Pajero Junior
The Mitsubishi Pajero Junior is a mini SUV produced by Japanese automaker Mitsubishi Motors between October 1995 and March 1998 for the Japanese domestic market only. Based on a lengthened Minica platform, it was a larger version of the Mitsubishi Pajero Mini, a kei car. The biggest visual difference from the Pajero Mini is the wide fender trims and wider tyres, giving it a more purposeful appearance. The car is classified as a small size car according to Japanese government dimension regulations, so it pays lower taxes than the normal-size Pajero but higher taxes than the Pajero Mini. Design For road and light off-road use, a rear wheel drive configuration can be selected. However, it also has a selectable (which Mitsubishi called "Easy-Select 4WD") four-wheel drive system (low and high gear ratios) for serious off-road driving. The Pajero Junior has better off-road capabilities than some contemporary mini SUVs like the Daihatsu Terios and Suzuki X-90. The 1094 cc engin ...
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Euro 2
The European emission standards are vehicle emission standards that regulate pollution from the use of new land surface vehicles sold in the European Union and European Economic Area member states and the United Kingdom, and ships in European territorial waters. These standards target air pollution from exhaust gases, brake dust, and tyre rubber pollution, and are defined through a series of European Union directives that progressively introduce stricter limits to reduce environmental impact. Euro 7, agreed in 2024 and due to come into force in 2026, includes non-exhaust emissions such as particulates from tyres and brakes. Until 2030 fossil fueled vehicles are allowed to have dirtier brakes than electric vehicles. Background In the European Union, emissions of nitrogen oxides (), total hydrocarbon (THC), non-methane hydrocarbons (NMHC), carbon monoxide (CO) and particulate matter (PM) are regulated for most vehicle types, including cars, trucks (lorries), locomotive ...
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Lean-burn
Lean-burn refers to the burning of fuel with an excess of air in an internal combustion engine. In lean-burn engines the air–fuel ratio may be as lean as 65:1 (by mass). The air:fuel ratio needed to stoichiometrically combust gasoline, by contrast, is 14.64:1. The excess of air in a lean-burn engine emits far less hydrocarbons. High air–fuel ratios can also be used to reduce losses caused by other engine power management systems such as throttling losses. Principle A lean-burn mode is a way to reduce throttling losses. An engine in a typical vehicle is sized for providing the power desired for acceleration, but must operate well below that point in normal steady-speed operation. Ordinarily, the power is cut by partially closing a throttle. However, the extra work done in pulling air through the throttle reduces efficiency. If the fuel/air ratio is reduced, then lower power can be achieved with the throttle closer to fully open, and the efficiency during normal driving (below ...
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Mitsubishi Pajero Mini
The is a kei car produced by Mitsubishi Motors from December 1994 until June 2012. Overview Based on the platform of the Minica, the Pajero Mini was styled as a miniature version of the company's successful Pajero sport utility vehicle, in response to the SUV craze of the late 1980s and early 1990s."Mitsubishi Motors Corporation"
Fundinguniverse.com
Compared to the full-sized original, the ''kei'' vehicle was considerably smaller and was fitted with gas 660 cc four-cylinder engines. The popularity of the vehicle inspired Mitsubishi to create several limited editions, including the "Iron Cross", "Desert Cruiser", "White Skipper" and "Duke".


First generation (1994; H51/56A)

The original Pajero Mini was first presented in Dec ...
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Lean-burn
Lean-burn refers to the burning of fuel with an excess of air in an internal combustion engine. In lean-burn engines the air–fuel ratio may be as lean as 65:1 (by mass). The air:fuel ratio needed to stoichiometrically combust gasoline, by contrast, is 14.64:1. The excess of air in a lean-burn engine emits far less hydrocarbons. High air–fuel ratios can also be used to reduce losses caused by other engine power management systems such as throttling losses. Principle A lean-burn mode is a way to reduce throttling losses. An engine in a typical vehicle is sized for providing the power desired for acceleration, but must operate well below that point in normal steady-speed operation. Ordinarily, the power is cut by partially closing a throttle. However, the extra work done in pulling air through the throttle reduces efficiency. If the fuel/air ratio is reduced, then lower power can be achieved with the throttle closer to fully open, and the efficiency during normal driving (below ...
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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

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