The Mitsubishi 4G9 engine is a series of straight-4 automobile engines produced by Mitsubishi Motors. All are 16-valve, and use both single- and double- overhead camshaft heads. Some feature MIVEC variable valve timing.
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.
displaces 1.6 L (1597 cc) and is available with either SOHC
or MIVEC DOHC
versions. Power output can be as high as 172 hp (128kw), 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.
The 1.8 L (1834 cc) 4G93
is also available in both SOHC
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
The DOHC 4G93/4G93P has 103kw at 6000rpm and redline at 7600rpm
is a 2.0 L version built in Japan
, used in the Mitsubishi Lancer
. Bore is 81.5 mm and stroke is 95.8 mm, with a compression ratio of 7:1. 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 with MFI fuel injection
and an aluminum SOHC cylinder head with forged steel connecting rods and four valves per cylinder.