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Mitsubishi Orion engine

From Wikipedia, the free encyclopedia

Mitsubishi Motors SVG logo 2.svg
Orion engine
2003 Mitsubishi Colt 4G19 engine 2.jpg
Overview
ManufacturerMitsubishi Motors
Also called4G1
Production1970s–present
Layout
ConfigurationStraight-4
Displacement1.2–1.6 L (1,244–1,584 cc)
Cylinder bore68.2 mm (2.69 in)
69.5 mm (2.74 in)
71 mm (2.8 in)
72.2 mm (2.84 in)
74 mm (2.91 in)
75.5 mm (2.97 in)
76 mm (2.99 in)
Piston stroke82 mm (3.23 in)
87.3 mm (3.44 in)
Block materialCast iron
ValvetrainOHV 2 valves x cyl.
SOHC 2 or 3 valves x cyl.
DOHC 4 valves x cyl. with MIVEC
Compression ratio9.4:1
Combustion
TurbochargerTC06 (on 4G12T only)
Fuel systemCarburetor
Multi-port fuel injection
Direct injection
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output73–197 hp (54–147 kW)
Torque output10.9–15.3 kg⋅m (107–150 N⋅m; 79–111 lb⋅ft)
Chronology
PredecessorNeptune engine

The Mitsubishi Orion or 4G1 engine is a series of inline-four internal combustion engines introduced by Mitsubishi Motors in the 1970s, along with the Astron, Sirius, and Saturn. It was first introduced in the Colt and Colt-derived models in 1978. Displacement ranges from 1.2 to 1.6 L (1,244 to 1,584 cc).

4G11

The 4G11 displaces 1.2 L (1,244 cc) with a bore and stroke of 69.5 mm × 82 mm (2.74 in × 3.23 in).

Applications:

4G12

The 4G12 (also known as the G11B) displaces 1.4 L (1,410 cc) with a bore and stroke of 74 mm × 82 mm (2.91 in × 3.23 in). 4G12 was the first to feature Mitsubishi's MD (modulated displacement) technology, a form of variable displacement. The 4G12 was not offered by Mitsubishi with fuel injection. This engine is fairly outdated compared to its counterparts that were used in the later Lancers.

Applications:

4G12T

Turbocharged version of the 4G12, uses a TC06 turbocharger.

4G13

The SOHC 4G13 displaces 1.3 L (1,298 cc) 12 valves 75–85 hp (56–63 kW) with a bore and stroke of 71 mm × 82 mm (2.80 in × 3.23 in). In the Gulf Countries, 90 PS (66 kW) gross at 6000 rpm is claimed.[1]

4G15

The 4G15P engine in the first generation Proton Saga.
The 4G15P engine in the first generation Proton Saga.

The SOHC 4G15 displaces 1.5 L (1,468 cc) with a bore and stroke of 75.5 mm × 82 mm (2.97 in × 3.23 in). A version of the 4G15 was produced with gasoline multi-port fuel injection. It has approximately 100 hp (75 kW) on the 1993 Mirage model. The DOHC 4G15 produces 120 hp (89 kW) with 137 N⋅m (101 lb⋅ft) of torque. Another DOHC version was combined with GDI fuel injection and delivers 100 hp (75 kW) and 137 N⋅m (101 lb⋅ft) of torque. A DOHC MIVEC turbo variant of the engine is also still in production to date (4G15T), serving in the Mitsubishi Colt series, offering 163 hp (122 kW) on the latest Colt Version-R (with exhaust enhancement). The most powerful version of this engine is found in the Colt CZT Ralliart (special model in Switzerland) with a total output of 197 hp (147 kW). The 4G15 is known as one of the longest lived Japanese engines ever produced. There was a recorded instance of the engine exceeding 997,000 mi (1,604,516 km) in a 1998 Mitsubishi Mirage sedan.

Applications:

4G15 8-Valve

This version of the 4G15 is a single overhead camshaft (SOHC) 8-valve, carburetor type engine. It is a in-line four with a compact type combustion chamber. The engine's advertised power was 77 PS (57 kW; 76 hp) (DIN) and 127 N⋅m (94 lb⋅ft) of torque.

The engine is an analogue of the Mitsubishi G15B in terms of the engine mechanical specifications except for the valve timing. The G13B is also equipped with jet valves and jet springs.

SPECIFICATIONS:

Total displacement: 1.5 L (1,468 cc)

Bore x Stroke: 75.5 mm × 82 mm (2.97 in × 3.23 in)

Compression Ratio: 9.4:1

4G15 12-Valve Engine

4G16

The 4G16 displaces 1.2 L (1,198 cc) from a 68.2 mm × 82 mm (2.69 in × 3.23 in) bore and stroke. This engine was mainly offered in European markets, where it suited local tax regulations.

Applications:

  • Mitsubishi Colt/Mirage
  • Mitsubishi Lancer

4G17

The 4G17 displaces 1.3 L (1,343 cc). It is a SOHC 12-valve engine. Bore and stroke is 72.2 mm × 82 mm (2.84 in × 3.23 in). Output of a carbureted version is 78 PS (57 kW; 77 hp) at 6,000 rpm and 10.9 kg⋅m (107 N⋅m; 79 lb⋅ft) of torque at 3,500 rpm.[2]

Applications:

  • 1991-2007 Mitsubishi Colt T120SS (Indonesia); production stopped due to Euro 2 emission standard that requires usage of gasoline-direct injection system, engine control unit / module (ECU/ECM), and catalytic converter usage.[3]

4G18

The SOHC 4G18 displaces 1.6 L (1,584 cc) with a bore and stroke of 76 mm × 87.3 mm (2.99 in × 3.44 in). It is a 4-valve per cylinder engine, 105 PS (77 kW) net with 150 N⋅m (111 lb⋅ft) (European specifications). It uses a COP (Coil-On-Plug, also known as Plug-top coil) ignition rely on one coil to fire two cylinders, one of which was by spark plug wire.

4G19

2003 Mitsubishi Colt 4G19 engine
2003 Mitsubishi Colt 4G19 engine

The DOHC MIVEC 4G19 displaces 1.3–litres and features four valves per cylinder. It produces 90 PS (66 kW; 89 hp) at 5,600 rpm and 121 N⋅m (89 lb⋅ft) of torque at 4,250 rpm. It was introduced in 2002, powering the then-new Mitsubishi Colt.

Applications:

  • Mitsubishi Colt

See also

References

  1. ^ "Lancer GLX - Specification". Bahrain: Mitsubishi Motors. Archived from the original on 2005-12-18.
  2. ^ Mitsubishi Colt T120SS (PDF), PT Krama Yudha Tiga Berlian Motors, p. 2, archived from the original (PDF) on 2011-06-17, retrieved 2011-07-21
  3. ^ http://autobild.co.id/Tips/Knowledge/mobil-irit-laik-euro2
This page was last edited on 12 December 2019, at 14:44
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