World Library  
Flag as Inappropriate
Email this Article

Mitsubishi Motors engines

Article Id: WHEBN0001259705
Reproduction Date:

Title: Mitsubishi Motors engines  
Author: World Heritage Encyclopedia
Language: English
Subject: Mitsubishi Motors, Mitsubishi Astron engine, Mitsubishi Motors technologies, Mitsubishi 4A3 engine, Mitsubishi Neptune engine
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Mitsubishi Motors engines

This is a list of engines produced by Mitsubishi Motors since 1964, and its predecessors prior to this.

Contents

  • Explanation of codes 1
  • Configurations 2
    • Single-cylinder 2.1
    • Two-cylinder 2.2
    • Three cylinder 2.3
    • Four-cylinder 2.4
    • Six-cylinder 2.5
    • Eight-cylinder 2.6
    • Other engines 2.7
  • See also 3
  • References 4

Explanation of codes

Mitsubishi engines designed since 1970 use a four-digit naming convention:

  • The first (digit) signifies the number of cylinders; "2" = straight-2, "3" = straight-3, "4" = straight-4, "6" = V6, "8" = V8.
  • The second (letter) formerly referred to the fuel type; "D" = diesel, "G" = gasoline. However, since the 1980s, this has changed. Two engine families were introduced using the letter "A" to denote that all the engines in the family had an alloy cylinder head. Their latest engines, however, do not follow any previous conventions (e.g. 4M4, 3B2, etc.).
  • The third (digit) previously denoted the engine family. Five of the "4G" straight-4 engine families had distinct names; "4G1" = Orion, "4G3" = Saturn, "4G4" = Neptune, "4G5" = Astron, and "4G6" = Sirius.
  • The fourth (digit) is the specific engine model within the family. It is not a guide to its place within that family, nor is it a guide to the capacity of the engine.

There may also be supplementary letters after the initial four characters. "T" can indicate that the engine is turbocharged (e.g. 4G63T), "B" that this is the second version of the engine (e.g. 4G63B). Where engine codes are used which include the supplemental letters, the first digit denoting the number of cylinders may be omitted, so 4G63T may be seen as G63T.

Configurations

Single-cylinder

These were used in Mitsubishi's very first vehicles, motor scooters and three-wheelers.

  • NE/NE1 — First introduced as the 112 cc side-valve, air-cooled 1.5 hp NE10 for the famous Silver Pigeon scooter. Later iterations included the NE7, the enlarged 192 cc NE9, and the OHV 125 cc NE8 and 175 cc NE13.
  • ME20 — This 309 cc water-cooled OHV engine served in the three-wheeled Leo.

Two-cylinder

Mitsubishi's smallest powerplants, most commonly found in their earliest models in the 1960s:

Three cylinder

Mitsubishi's smallest modern engines are primarily designed for the Japanese-market kei car class:

Four-cylinder

Mitsubishi has developed twelve families of straight-4 engines:

  • 4A3 — A 660 cc engine designed for kei cars in 1994, enlarged to 1100 cc in 1999.
  • 4A9 — A 1.3 and 1.5 L engine introduced in the 2003 Colt.
  • 4B1 — The newest family of straight-4 engines being developed in a joint-venture with DaimlerChrysler and Hyundai known as the Global Engine Manufacturing Alliance (GEMA), all featuring aluminum engine block, DOHC heads, 4 valves per cylinder and MIVEC variable valve timing. The first of these are the 4B11 2.0 L and 4B12, a 2.4 L fitted to the 2007 Lancer and Outlander.
  • 4DR — Two 2659 cc straight-4 normally aspirated and turbodiesels, 4DR5 and 4DR6, fitted to some Canter light trucks, and also fitted to the company's Jeep which it built under licence from Willys between 1953 and 1998. The naturally aspirated 4DR5 produced from 75 to 80 PS (55 to 59 kW), while the turbocharged and intercooled versions produced a torque of 22.5 kg/m (220.65 Nm) at 2000 RPM and had a compression ratio of 21.5:1, with a maximum power of 100 PS (74 kW) at 3,300 rpm. The direct injected 4DR6 has a lower compression ratio of 17.5 producing a torque of 21.0 kgm (205.94 Nm) at 2000 rpm with a maximum power of 94 PS (69 kW) at 3,500 rpm [1]
  • 4G1 "Orion" — 1.2 L to 1.6 L. First introduced in the 1978 Colt, and now the basis for the high-performance variant of the 2003 version.
  • 4G3 "Saturn" — Ranging in size from 1.2 L to 1.8 L, this family first saw service in the 1969 Colt Galant.
  • 4G4 "Neptune" — 1.2 L to 1.4 L straight-4 engines available in the Lancer and Galant in 1979.
  • 4G5 "Astron" — Offered from 1972 in capacities from 1.85 L to 2.6 L, the Astron family pioneered the modern use of twin balance shafts in a straight-4 configuration. The system, introduced in 1975 and dubbed "Silent Shaft", built on the patents of Frederick Lanchester which Mitsubishi had obtained, and proved a lucrative venture when it was licensed to numerous other manufacturers.
  • 4D5 "Astron" diesel — Also part of the "Astron" family, the 2.3 L was the first turbodiesel engine to be fitted to a Japanese passenger car. The subsequent 2.5 L version, introduced in 1986, is still in production, a popular choice in its line of pickup trucks where it is regarded as rugged, reliable and inexpensive to maintain.
  • 4G6 "Sirius" — Available in capacities from 1.6 L to 2.4 L, this was the favoured performance variant for Mitsubishi. The 4G61T powered their Colt Turbo, while the 4G63T, first introduced in the 1980 Galant, 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 298 kW (405 PS) version of the Sirius, making it the most powerful car ever sold by Mitsubishi.
  • 4G9 — 1.5 L to 2.0 L. The first modern gasoline direct injection (GDI) engine, in the Mitsubishi Carisma, was an 1834 cc 4G93 straight-4.
  • 4M4 — Mitsubishi's replacement for the "Astron" diesel, available as a 2.8 L, and later as a 3.2 L with direct injection.
  • 4N1 — New family of next generation clean diesel engines, to be introduced in early 2009
  • KE4 — A range of OHV straight-4s powering the Colt range in the 1960s.

Six-cylinder

Mitsubishi has three families of V6 engines, which have seen use in its midsize lines, coupés and compacts.

  • 6A1 — The smallest of these, the 1.6 L, was introduced in the Mitsubishi Mirage MX in 1992, and remains the smallest modern production V6. Larger versions powered the higher-spec versions of their family cars, with both the 6A12 2.0 L and the 6A13 2.5 L being given twin-turbo setups for the latter generations of the Mitsubishi Galant VR-4.
  • 6B3 — A family of V6 engines featuring DOHC and SOHC heads and MIVEC variable valve timing. The first of these is the 6B31 3.0 L fitted to the 2007 Outlander.
  • 6G7 "Cyclone V6" — First seen in the 1986 Debonair and Diamante as a 2.0 L and 3.0 L, it has been the flagship powerplant of the company except when they briefly built a V8 in 1999-2001. The staple of their high-end sedans, it was given twin-turbos for the Mitsubishi GTO, and became the most powerful car ever built by the company at the time. Subsequent 3.5 L versions known as the 6G74 were popular in Mitsubishi's SUV range, especially with GDI, and a petrol-version was also manufactured in Australia to power the Australian-made Mitsubishi Magna/Verada for that country's domestic and export markets. Expanded to 3.8 L with the 6G75, it underpins the American Galant, Eclipse and Australian-made Mitsubishi 380.
  • KE6 — A straight-6 derivative of the KE4 straight-4 engines developed for the first Debonair from the 1960s Mitsubishi Colt.
  • "Saturn 6" — A 2.0 L straight-6 variant of the Saturn straight-4 was made for the Mitsubishi Debonair in the 1970s to replace the KE6.

Eight-cylinder

  • 8A8 — For its Japan-only Proudia and Dignity models, Mitsubishi built an alloy-headed 4.5 L V8 with GDI. The vehicles proved unsuccessful, and were quickly discontinued. However, the range had been developed in conjunction with the Hyundai Motor Company, whose Hyundai Equus fared much better.

Other engines

See also

List of Mitsubishi Fuso engines

References

  • "Engine Epic Part 8 - Mitsubishi Engines", Michael Knowling, Autospeed, issue 48, 21 September 1999
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.