Which brand does the 4A91T engine belong to?

1 Answers
Reyes
07/29/25 5:51pm
The model 4A91T is an engine from the Mitsubishi brand. The 4A91T engine originates from Japanese Mitsubishi engine technology and was jointly developed by Shenyang Aerospace and Mitsubishi, entering mass production in 2013. The 4A91T engine is Mitsubishi's latest-generation engine featuring the MIVEC variable valve timing system. On June 26, 2009, the launch ceremony for the Aerospace Mitsubishi 4A9 engine was held in Shenyang. To quickly respond to the trend of downsizing in China's rapidly developing automotive industry and increasingly stringent environmental requirements, Aerospace Mitsubishi, as an important engine production base for Mitsubishi Motors, decided to introduce the 4A9 engine in early 2007 and has since started production in Shenyang. The 4A9 series engine, developed by Mitsubishi in 2004, is produced by Germany's MDC-Power company and is widely used in models such as the Mercedes-Benz Smart, Mitsubishi Colt, and the latest 10th-generation Lancer. As Mitsubishi's core engine in the 1.3L to 1.6L range, it achieves top-level performance in compact size, lightweight design, high performance, low fuel consumption, and environmental performance (meeting Euro 4 standards and also considering Euro 5 compliance). The function of an engine is to convert the thermal energy of gasoline or diesel into mechanical energy by burning and expanding the gas in a sealed cylinder, thereby pushing the piston to perform work. The components of an engine include: the valve train, crankshaft and connecting rod mechanism, ignition system, cooling system, lubrication system, starting system, and fuel supply system. Engine maintenance methods include: using qualified engine oil, using qualified coolant and antifreeze, regularly cleaning radiator scale, regularly removing engine carbon deposits, periodically replacing the vehicle's three filters (air, oil, and fuel), and maintaining reasonable engine speeds.
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