Mitsubishi 4M4 engine

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4M4
Overview
Manufacturer Mitsubishi Motors
Combustion chamber
Cylinder block alloy Cast iron

The Mitsubishi 4M4 engine is a range of four-cylinder diesel 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 They superseded the previous 4D5 engine family, although they did not replace them.

Originally available only as a 2.8 L intercooled turbo, detail improvements in 1996 and a larger 3.2 L option in 1999 served to improve power, torque, fuel economy and emissions.

4M40[edit]

  • Engine type — Inline 4-cylinder SOHC
  • Displacement — 2835 cc
  • Bore — 95 mm
  • Stroke — 100 mm
  • Fuel type — Diesel

Turbo[edit]

  • Compression ratio — 21:1
  • Power — 92 kW (125 PS) at 4000 rpm
  • Torque — 294 N·m (217 lb·ft) at 2000 rpm

Intercooled turbo[edit]

  • Fuel system — Electronic control or mechanical type distribution jet pump
  • Compression ratio — 21:1
  • Power — 103 kW (140 PS) at 4000 rpm
  • Torque — 314 N·m (232 lb·ft) at 2000 rpm

Naturally aspirated[edit]

  • Fuel system — Distributor type injection pump
  • Compression ratio — 21:1
  • Power — 59 kW (80 PS) at 4000 rpm
  • Torque — 250 N·m (180 lb·ft) at 2000 rpm

4M41[edit]

  • Engine type — Inline 4-cylinder DOHC 16 valve
  • Displacement — 3200 cc
  • Bore — 98.5 mm
  • Stroke — 105.0 mm
  • Fuel type — Diesel

Intercooled turbo[edit]

  • Fuel system — Electronic control type distributor type pump (direct injection inside diesel tube) or Common Rail Direct Injection
  • Compression ratio — 17:1
  • 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
  • 2006-2007 Mitsubishi Pajero (Philippine Domestic Market)
  • 2008-2011 Mitsubishi Pajero Sport / Montero Sport

1st Generation Variable geometry intercooled turbo[edit]

  • Fuel system — Common Rail Direct Injection
  • Compression ratio — 17:1, 16.0:1
  • Power — 129 kW (175 PS) at 3800 rpm
  • Torque — 382 N·m (282 lb·ft) at 2000 rpm

Applications:

  • 2006-2009 Mitsubishi Pajero (currently on the Philippine Domestic Market Pajero)

2nd Generation Variable geometry intercooled turbo[edit]

  • Fuel system — Common Rail Direct Injection
  • Compression ratio — 17:1, 16.0:1
  • Power —147 kW (200 PS) at 3800 rpm
  • Torque — 450 N·m (330 lb·ft) at 2000 rpm

Applications:

  • 2010–present Mitsubishi Pajero

See also[edit]

transmission case