Mitsubishi 4J1 engine

Last updated
Mitsubishi 4J1 engine
Next MIVEC at TMS2005.jpg
Overview
Manufacturer Mitsubishi Motors
Production2011–present
Layout
Configuration Naturally aspirated 4-cylinder
Displacement 1.8–2.4 L (1,798–2,360 cc)
Cylinder bore 86 mm (3.39 in)
88 mm (3.46 in)
Piston stroke 77.4 mm (3.05 in)
86 mm (3.39 in)
97 mm (3.82 in)
Block materialAluminium die cast
Head materialAluminium die cast
Valvetrain Direct acting SOHC, 16 valves, continuously variable MIVEC intake valve timing
Compression ratio 10.5:1-10.7:1
Combustion
Fuel system Multi-port fuel injection
Fuel type Gasoline
Cooling system Water-cooled
Output
Power output 102–124 kW (139–169 PS)
Torque output 172–220 N⋅m (127–162 lb⋅ft)
Chronology
Predecessor Mitsubishi 4B1 engine

The Mitsubishi 4J1 engine is a range of all-alloy straight-4 engines. The main goal was declared as reduction on-road CO2 emission on new vehicles. [1] According to cars specifications fuel consumption also was improved. Comparing to previous engine series (4B1) valvetrain configuration was changed from DOHC to SOHC, Variable valve lift (VVL) technology added. The engine usually is paired with the ecological features like Start-Stop system and EGR. That engine mostly is appearing in the cars Lancer X, ASX, Outlander on several markets across Japan, Europe and Latin America.

Contents


4J10

Specifications

Engine typeInline 4-cylinder SOHC 16v, MIVEC
Displacement1.8 L (1,798 cc)
Bore x Stroke86 mm × 77.4 mm (3.39 in × 3.05 in)
Compression ratio10.7:1
Fuel systemECI multiple
Peak power102 kW (139 PS) at 6000 rpm(jin-net)
Peak torque172 N⋅m (127 lb⋅ft)17.9kgm at 4200 rpm (jin-net)

Applications

Characteristics

The new 4J10 MIVEC engine features the use of a next-generation MIVEC system that continuously regulates intake valve lift, opening duration and timing. The new MIVEC system together with improved combustion stability and a reduction in piston friction provide an improvement in fuel economy without any loss in engine performance (output and torque) over the 4B10 MIVEC engine (1.8-liter, inline-4, 16-valve DOHC).

4J11

Specifications

Engine typeInline 4-cylinder SOHC 16v, MIVEC
Displacement2.0 L (1,998 cc)
Bore x Stroke86 mm × 86 mm (3.39 in × 3.39 in)
Compression ratio10.5:1
Fuel systemElectronically controlled MPI
Peak power110 kW (150 PS) at 6000 rpm
Peak torque195 N⋅m (144 lb⋅ft) at 4100-4200 rpm

Applications

Characteristics

The 4J11 engine is the newly developed engine further improving the fuel economy. This engine can keep the same output performance as the conventional 4B11 engine by using the new MIVEC system.

4J12

Specifications

Engine typeInline 4-cylinder SOHC 16v, MIVEC
Displacement2.4 L (2,360 cc)
Bore x Stroke88 mm × 97 mm (3.5 in × 3.8 in)
Compression ratio10.5:1
Fuel systemElectronically controlled MPI
Peak power124 kW (169 PS) at 6000 rpm(eec-net 歐盟淨值)
Peak torque220 N⋅m (162 lb⋅ft) at 4200 rpm(eec-net 歐盟精緻) (10ps net=10.7ps gross;10NM NET =10.7NM GROSS)

Applications

Characteristics

"Eco friendly" replacement for 4B12.

See also

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References

  1. "Press Release | News・Events | MITSUBISHI MOTORS".