Mitsubishi 4M4 engine
The Mitsubishi 4M4 engine is a range of four-cylinder diesel piston engines from Mitsubishi Motors, first introduced in the second generation of their Montero/Pajero/Shogun SUVs. They superseded the previous 4D5 engine family, although they did not replace them.
| Mitsubishi 4M4 engine | |
|---|---|
| Overview | |
| Manufacturer | Mitsubishi Motors |
| Production | 1991-2000 |
| Layout | |
| Configuration | Straight-4 |
| Displacement | 2.8–3.2 L (2,835–3,200 cc) |
| Cylinder bore | 95 mm (3.74 in) 98.5 mm (3.88 in) |
| Piston stroke | 100 mm (3.94 in) 105 mm (4.13 in) |
| Block material | Cast iron |
| Valvetrain | SOHC, DOHC 4 valves x cyl. |
| Compression ratio | 16.0:1-21.0:1 |
| Combustion | |
| Turbocharger | The 4M40 used the TD04 turbo from 1994 to 1997, it was replaced by the TF035 in 1998 and was used for 2 years. The 4M41 used the TF035 from 1999 to 2007 and was replaced later with the IHIRHV5. Only the IHIRHV5 turbo was a Variable Geometry type turbo on the 4M41. Both the 4M40T and 4M41 Were Intercooled . |
| Fuel system | Zexel Mechanical or Electronically controlled Distributor type injection pump Denso Common rail direct injection |
| Fuel type | Diesel |
| Cooling system | Water-cooled |
| Output | |
| Power output | 59–147 kW (80–200 PS) |
| Torque output | 198–441 N⋅m (146–325 lb⋅ft) |
Originally available only as a 2.8 L (2,835 cc) intercooled turbo, detail improvements in 1996 and a larger 3.2–litre option in 1999 served to improve power, torque, fuel economy and emissions.
4M40
- Engine type — Inline 4-cylinder SOHC, swirl combustion chamber
- Displacement — 2.8 L (2,835 cc)
- Bore x Stroke — 95 mm × 100 mm (3.74 in × 3.94 in)
Naturally aspirated
- Fuel system — Zexel Distributor type injection pump
- Compression ratio — 21.0:1
- Power — 59 kW (80 PS) at 4000 rpm
- Torque — 198 N⋅m (146 lb⋅ft) at 2000 rpm
Applications:
- 1996-? Canter (lightest-duty), 69 kW (94 PS), 191 N⋅m (141 lb⋅ft) @ 2000 rpm
Intercooled Turbo Gen 1
- Compression ratio — 21.0:1
- Power — 92 kW (125 PS) at 4000 rpm
- Torque — 294 N⋅m (217 lb⋅ft) at 2000 rpm
Applications:
- Triton/L200 Sport 4x4 1998-2003
- Pajero 1994-1999
- Type 93 1/2 ton Truck
Intercooled Turbo Gen 2
- Fuel system — Zexel Electronically controlled or Mechanical controlled distributor type Injection Pump
- Compression ratio — 21.0:1
- Power — 103 kW (140 PS) at 4000 rpm
- Torque — 314 N⋅m (232 lb⋅ft) at 2000 rpm
Applications:
- Triton/L200 2003-2006
- L400 Delica, 1994-2006
oil type 15w40
4M41
- Engine type — Inline 4-cylinder DOHC 16 valve
- Displacement — 3.2 L (3,200 cc)
- Bore x Stroke — 98.5 mm × 105 mm (3.88 in × 4.13 in)
Intercooled turbo
- Fuel system — Zexel Electronic control type distributor type pump (direct injection inside diesel tube) or Denso Common Rail direct injection
- Compression ratio — 17.0:1
- Power — 121 kW (165 PS) at 4000 rpm
- Torque — 351 N⋅m (259 lb⋅ft) at 2000-3000 rpm
Applications:
- 1999-2006 Mitsubishi Pajero
- 2005-2011 Mitsubishi Triton / L200 / Strada
- 2006-Present Mitsubishi Pajero (Philippine Domestic Market)
- 2008-2011 Mitsubishi Pajero Sport / Montero Sport
1st Generation Variable geometry intercooled turbo
- Fuel system — Denso Common Rail Direct Injection
- Compression ratio — 17.0:1, 16.0:1
- Power — 129 kW (175 PS) at 3800 rpm
- Torque — 382 N⋅m (282 lb⋅ft) at 2000 rpm
Applications:
- 2006-2009
2nd Generation Variable geometry intercooled turbo
- Fuel system — Denso Common Rail Direct Injection
- Compression ratio — 17.0:1, 16.0:1
- Power —147 kW (200 PS) at 3800 rpm
- Torque — 441 N⋅m (325 lb⋅ft) at 2000 rpm
Applications:
- 2010–present Mitsubishi Pajero
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