Mitsubishi 4N1 engine
4N1 | |
---|---|
Overview | |
Manufacturer | Mitsubishi Motors |
Production | 2010–present |
Combustion chamber | |
Cylinder block alloy | Aluminium die cast |
Cylinder head alloy | Aluminium die cast |
Valvetrain | DOHC, 16 valves, variable valve timing MIVEC (intake) |
Combustion | |
Turbocharger | variable geometry turbocharger, intercooler |
Fuel system | common rail injection |
The Mitsubishi 4N1 engine is a family of all-alloy four-cylinder diesel engines developed by Mitsubishi Motors, produced at the company's powertrain facility in Kyoto, Japan for use in Mitsubishi's small to mid-sized global passenger cars.[1][2][3]
In June 2006, Mitsubishi Motors and Mitsubishi Heavy Industries announced a joint development project for a new generation of clean diesel engines to be used in cars exported to Europe with a target of beginning mass production in 2010[2] and later announced that the engines will be gradually phased into other global markets.[3][4]
The preliminary version of the 1798 cc engine was first seen in the Concept-cX test car introduced in 2007. The larger 2268 cc was first exhibited in the Concept-ZT test car introduced in the same year and later used in the Concept-RA test car introduced in 2008.[5][6][7][8]
With a clean diesel emission performance in mind, all engines are designed to comply with Tier 2 Bin 5 emission regulations in the United States, Euro 5 standard in Europe and Japan's Post New Long Term regulations.[1][3][8]
Together with Mitsubishi's electric vehicle technology the new diesel engines are positioned as a core element in the Mitsubishi Motors Environment Initiative Program 2010 (EIP 2010) announced in July 2006.[3][9]
The 4N1 engine family is the world's first to feature a variable valve timing (intake side) system applied to passenger car diesel engines.[10]
All engines developed within this family have aluminum cylinder block, double overhead camshaft layouts, four valves per cylinder, a common rail injection system with a variable geometry turbocharger and MIVEC variable valve timing.
Engine family characteristics
Mitsubishi's new clean diesel engines use a 200 MPa (2,000 bar) high-pressure common rail injection system to improve combustion efficiency. The 4N13 1.8-liter uses solenoid fuel-injectors. The larger 4N14 2.3-liter engine uses piezo fuel-injectors that produce a finer fuel spray. Both engines feature a fast ceramic glowplug system. The engines are designed to operate at a lower compression ratio, thus lowering the combustion pressure, allowing the use of an aluminium cylinder block that reduces weight.[1][11]
The 4N13 1.8-liter engine uses a Variable Geometry (VG) turbocharger with a variable vane turbine, which provides optimal boost pressure control for different driving conditions. The 4N14 2.3-liter engine also uses a VG turbocharger plus a Variable Diffuser (VD) that uses both variable geometry vanes in the turbine housing and a compressor with variable vanes in the diffuser passage, further improving combustion efficiency.[1][11]
Within the engine, Mitsubishi used an offset angle crankshaft that reduces friction, therefore noise and vibration, allowing the engine to run smoothly and quietly at all engine speeds.[1][11]
To meet the requirements of global emissions standards, Mitsubishi developed a new catalyst system that combines a Diesel Oxidation Catalyst (DOC), NOx Trap Catalyst (NTC) and Diesel Particulate Filter (DPF).[1][11]
4N13
Specifications
Engine type | Inline 4-cylinder, DOHC 16v, MIVEC (intake) |
Displacement | 1.8 L (1798 cc) |
Bore | 83 mm |
Stroke | 83.1 mm |
Compression ratio | 14.9:1 |
Turbocharger | variable geometry turbocharger, intercooler |
Fuel system | Common rail with solenoid injectors |
Peak power | 110 kW (150 PS) at 4000 rpm 85 kW (116 PS) at 4000 rpm (low power version) |
Peak torque | 300 N·m (221 lb·ft) at 2000-3000 rpm |
Applications
- 2010 Mitsubishi ASX (RVR)
- 2010 Mitsubishi Lancer
4N14
Specifications
Engine type | Inline 4-cylinder, DOHC 16v, MIVEC |
Displacement | 2.3 L (2268 cc) |
Bore | 86 mm |
Stroke | 97.6 mm |
Turbocharger | variable geometry turbocharger / variable diffuser, intercooler |
Fuel system | Common rail with piezo injectors |
Peak power | 130 kW (177 PS) at 3500 rpm [12] |
Peak torque | 380 N·m (280 lb·ft) at 2000 rpm |
Applications
- 2010 Mitsubishi Outlander
- 2012 Mitsubishi Delica D5 (without variable timing, 148ps/360Nm)
See also
- List of Mitsubishi engines
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "Environmental Highlights of the 2007 Tokyo Motor Show", Keith Hardy, .pdf file, Advanced propulsion news
- ↑ 2.0 2.1 "Joint Development of a New Generation Diesel Engine", Mitsubishi Motors press release
- ↑ 3.0 3.1 3.2 3.3 "Mitsubishi Motors to Bring Forward Market Introduction of Next-generation Diesel Car Engine", Mitsubishi Motors press release
- ↑ "Mitsubishi Motors Lineup at 2007 North American International Auto Show", Mitsubishi Motors press release
- ↑ "MITSUBISHI Concept-cX", Mitsubishi Motors press release
- ↑ "Mitsubishi Motors lineup at the 40th Tokyo Motor Show", Mitsubishi Motors press release
- ↑ "Mitsubishi Motors new "MITSUBISHI Concept-RA" to receive global premiere at 2008 Detroit Motor Show, Mitsubishi Motors press release
- ↑ 8.0 8.1 "Mitsubishi Motors Lineup at 2008 North American International Auto Showto receive global premiere at 2008 Detroit Motor Show, Mitsubishi Motors press release
- ↑ "Mitsubishi Motors Environment Initiative Program 2010", Mitsubishi Motors press release
- ↑ Mitsubishi Motors UK Geneva motor show 2010 presskit
- ↑ 11.0 11.1 11.2 11.3 "Mitsubishi Reveals New Concept-cX", Mitsubishi Motors Australia press release
- ↑ http://www.mitsubishi-motors.at/uploadedFiles/Parent_Site/Models_Data/Explores_Files/OutlanderMY2010/Datenblatt%20Outlander.pdf
External links
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