Mitsubishi 4B1 engine

The Mitsubishi 4B1 engine is a series name of a 4-stroke in-line 4-cylinder petrol engine for automobiles developed and manufactured by Mitsubishi Motors Corporation.

History

The 4B10 , 4B11 , and 4B12 were all developed as " world engines " , although their displacement and performance differed, so if there is no need to distinguish between each type, we will refer to them as the 4B1 engine or simply the 4B1.The world engine that became the prototype of this series is Mitsubishi Motors Corporation of Japan, Hyundai Motor of South Korea, Daimler Chrysler of Germany and the United States (as of 2021, the current situation as a DC company is Daimler AG , but it is completely It was designed by the Global Engine Alliance, co - founded by Stellatis in this Chrysler-leaning topic . As such, engines similarly inherited from the World Engine design exist not only in Mitsubishi (4B10, 4B11, 4B12), but also in Hyundai Kia (see Hyundai Theta Engine) and Chrysler.

Originally, the purpose of the world engine was to reduce development costs and production line maintenance costs through joint development and sharing of parts, but sharing everything was not considered. Only the basic parts of the engine were shared, leaving room for each company to freely determine engine performance in response to market demand. Mitsubishi manufactures the intake and exhaust valves for DaimlerChrysler's world engines.

As of 2019, all manufacturing in Japan is done at the Shiga factory of Kyoto Seisakusho in Konan City, Shiga Prefecture. This engine series is also supplied to Malaysia 's Proton, and 4B10 and 4B11 are adopted for Proton Inspira Lancer.

4B10 Mitsubishi engine 

It is a short stroke engine with a shorter stroke than the bore.

In Japan, 4B10 was installed for the first time in Galant Fortis, which underwent a minor change in December 2009, but overseas it has been installed in Lancer since before that.

Applications

• 2007-2017 Mitsubishi Lancer
• 2010 Mitsubishi RVR (Japan)
• 2010-2015 Proton Inspira

4B11 Mitsubishi engine 

4B11 is a naturally aspirated (NA) model installed in Galant Fortis (export name: Lancer), Lancer Evolution X, Lancer Evolution Final Edition, Galant Fortis Ralliart (export name: Lancer Ralliart), Galant Fortis Sportback. There is a turbo model installed in Ralliart.

The NA model 4B11 and 4B11 turbo look almost the same, but the turbo model had to meet the performance requirements of the Lancer Evolution, so many of the parts used have different designs and construction methods, resulting in lighter weight and it is highly rigid, and there is a difference that can be said to be a different thing from the naturally aspirated one.

However, the 4B11 turbo installed in the Galant Fortis and Sportback Ralliart grades is the same as the engine installed in the Lancer Evolution X, but the turbocharger is changed from twin scroll to single scroll, radiator and air cleaner, the shape and size of the intercooler have been optimized. The 4B11 turbo for the Lancer Evolution, compared to the 4G63 installed in the previous Lancer Evo, had the same maximum output of 206 kW, but increased torque and improved response, and the engine itself weighed 12.5 kg. and the low centre of gravity of the engine.

Applications: NA

• 2007-2017 Mitsubishi Lancer/Galant Fortis
• 2007–2012 Peugeot 4007
• 2012-2017 Peugeot 4008
• 2009 Mitsubishi Outlander (Facelift Europe)
• 2012 Mitsubishi Outlander Sport
• 2013 Mitsubishi Outlander PHEV
• 2010 Mitsubishi ASX, Mitsubishi RVR (Canada)
• 2010-2015 Proton Inspira
• 2007-now Mitsubishi Delica
• 2018-now Mitsubishi Eclipse Cross

Applications: Turbo

• 2007-2016 Mitsubishi Lancer Evolution X
• 2008-2015 Mitsubishi Lancer/Galant Fortis Ralliart 
• 2023 Mitsubishi Outlander PHEV

4B12 Mitsubishi engine 

It was the first 4B1 engine to be released, and it was installed in the 2.4 L model of the Outlander and the Delica D:5. The bore is 2mm wider than 4B10 and 4B11, making it a long-stroke engine with a long stroke. The 4B11 and 4B10 are based on this engine, with reduced bore and stroke.

The Outlander PHEV, which underwent a minor change in 2018, was equipped with the Atkinson cycle 4B12. It is a rare specification that emphasizes power generation capacity and has the same maximum rotation speed for output and torque (4,500 rpm).

Applications:

• Mitsubishi Outlander
• Mitsubishi Delica