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Mitsubishi 4G9x engine
From Wikipedia, the free encyclopedia
The Mitsubishi 4G9x engine is a series of straight-4 automobile engines produced by Mitsubishi Motors. All are 16-valve, and use both SOHC and DOHC heads. Some feature MIVEC variable valve timing.
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The 4G91 uses a 78.4 mm bore and 77.5 mm stroke for a total displacement of 1.5 litres. With a 9.5:1 compression ratio and DOHC, four-valve-per-cylinder head and multi-point EFI, this engine produces 84 kW at 6000 rpm and 135 N·m at 5000 rpm.
Applications:
The 4G92 displaces 1.6 L (1597 cc) and is available with either SOHC or DOHC or MIVEC DOHC versions. Power output can be as high as 172 hp, as found in the Mirage Cyborg-ZR. A Modular Displacement (MD) version of the 4G92 MIVEC was also produced – MD is Mitsubishi's cylinder deactivation system which helps improve fuel consumption.
Applications:
The 1.8 L (1834 cc) 4G93 is also available in both SOHC and DOHC versions. Turbocharged variants are also produced. The 4G93 was the first modern gasoline direct injection engine on its introduction in August 1996, and Mitsubishi produced over a million GDI engines. The SOHC 4G93 provides 86 kW at 6000 rpm and redlines at 6500 rpm
Applications:
- Mitsubishi Galant
- Mitsubishi Legnum
- Mitsubishi Aspire
- Mitsubishi RVR
- Mitsubishi Pajero iO
- Mitsubishi Carisma
- Mitsubishi Space Star
- Mitsubishi Lancer
- Mitsubishi Colt
- Proton Satria GTi
- Proton Putra
- Volvo S40
- Volvo V40
The 4G94 is a 2.0 L version built in Japan. Bore is 81.5 mm and stroke is 95.8 mm. It is used in the Mitsubishi Lancer. Output is 120 hp (89 kW) at 5500 rpm with 130 ft·lbf (176 N·m) of torque at 4250 rpm. It has a cast iron engine block and aluminum SOHC cylinder heads. It uses MFI fuel injection, has four valves per cylinder and features forged steel connecting rods.
- "The Mitsubishi 4G9x Engine Guide", Michael Knowling, Autospeed, issue 389, July 17, 2006
- "GDI engine production tops 1,000,000 unit mark", Mitsubishi Motors press release, September 11, 2001
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