Mitsubishi 4A9 engine
| Mitsubishi 4A9 engine | |
|---|---|
| Overview | |
| Manufacturer | Mitsubishi Motors MDC Power |
| Production | 2004–present (1.3 and 1.5) 2010–present (1.6) |
| Layout | |
| Configuration | Naturally aspirated Straight-4 |
| Displacement | 1.3 L (1,332 cc) 1.5 L (1,499 cc) 1.6 L (1,590 cc) |
| Cylinder bore | 75 mm (2.95 in) |
| Piston stroke | 75.4 mm (2.97 in) 84.8 mm (3.34 in) 90 mm (3.54 in) |
| Cylinder block material | Aluminum die cast |
| Cylinder head material | Aluminum die cast |
| Valvetrain | Direct acting DOHC, 16 valves, continuously variable MIVEC intake valve timing |
| Compression ratio | 10.5:1, 11.0:1 |
| Combustion | |
| Fuel system | Fuel injection |
| Fuel type | Gasoline |
| Cooling system | Water cooled |
| Output | |
| Power output | 70–86 kW (95–117 PS; 94–115 hp) |
| Torque output | 125–154 N⋅m (92–114 lb⋅ft) |
| Chronology | |
| Predecessor | Mitsubishi 4G1 engine |
The Mitsubishi 4A9 engine is the newest family range of all-alloy inline four-cylinder engines from Mitsubishi Motors, introduced in the 2004 version of their Mitsubishi Colt supermini, and built by DaimlerChrysler-owned MDC Power in Germany (previously a joint venture).
The engine project was begun as a joint effort by Mitsubishi Motors and DaimlerChrysler (DCX), with Mitsubishi handling the development of the engines and MDC Power GmbH, a company previously jointly established by Mitsubishi and DCX, handling production. The 4A9 is Mitsubishi's first four-cylinder engine family to adopt a high-pressure die-cast aluminum block.
All engines developed within this family have aluminum cylinder block and head, four valves per cylinder, double overhead camshaft layouts, and MIVEC continuous variable valve timing (intake only).