Mazda SKYACTIV-G 2.0l Engine
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Mazda SKYACTIV-G is the name of an inline 4-cylinder gasoline direct injection engine developed and manufactured by Mazda. One of SKYACTIV TECHNOLOGY.
History
It was announced on October 20, 2010 as part of SKYACTIV TECHNOLOGY. It achieves the world's highest compression ratio of 14.0 for a mass -produced gasoline engine, and both fuel efficiency and torque are improved by 15% compared to conventional engines.
Conventionally, when the compression ratio is increased, the air- fuel mixture is exposed to high temperature and high pressure, which inevitably causes abnormal combustion known as knocking. Mazda achieved the world's highest compression ratio by reducing residual gas, cylinder temperature, and time loss through mechanisms such as a 4-2-1 exhaust system, a piston with a cavity, and a multi-hole injector.
In addition, since the 4-2-1 exhaust system requires a wider space behind the engine room than before, when installing it on existing models, it is changed to a general 4-1 exhaust system and the compression ratio is increased. is also dropped.
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Naturally aspirated engine
- Name: SKYACTIV-G 2.0
- Type: Water-cooled in-line 4-cylinder DOHC 16 valves
- Displacement: 1,997cc
- Inner Diameter x Stroke: 83.5mm x 91.2mm
- Compression ratio: 12.0・13.0・14.0
- Fuel supply system type: direct injection (DI)
- Output/Torque
- 121kW (165PS) / 6,000rpm・210Nm (21.4kgf m) / 4,000rpm (CX-5・RON95 specification)
- 114kW (155PS) / 6,000rpm・196Nm (20.0kgf m) / 4,000rpm (CX-5・RON91 specification)
- 113kW (154PS) / 6,000rpm・194Nm (19.8kgf m) / 4,100rpm (Axela)
- 111kW (151PS) / 6,000rpm・190Nm (19.4kgf m) / 4,100rpm (Premacy, Lafesta Highway Star, Biante)
- 109 kW (148 PS) / 6,000 rpm, 192 Nm (19.6 kgf m) / 2,800 rpm (CX-3, before May 2018)
- 110 kW (150 PS) / 6,000 rpm, 195 Nm (19.9 kgf m) / 2,800 rpm (CX-3, May 2018 or later)
- 115kW (156PS) / 6,000rpm・199Nm (20.3kgf m) / 4,000rpm (CX-30)
- Installed vehicles 2012 on
- Nissan Lafesta Highway Star (CFFFWN: Nissan B35)
- Mazda Axela/Mazda3
- Mazda Atenza/Mazda6
- CX-3 (DKE#)
- CX-4
- CX-5 (KEEFW, KFEP)
- CX-30 (DMEP)
- CX-50
- Mazda CX-3
- Mazda CX-5
- Mazda Biante
- Mazda Premacy/Mazda5
- 2016–present Mazda Roadster/MX-5
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- Name: SKYACTIV-G 2.0
- Type: Water-cooled in-line 4-cylinder DOHC 16 valves
- Displacement: 1,997cc
- Inner Diameter x Stroke: 83.5mm x 91.2mm
- Compression ratio: 13.0・14.0
- Fuel supply system type: direct injection (DI)
- Output/Torque
- 110kW (150PS) / 6,000rpm・210Nm (21.4kgf m) / 4,000rpm (RON95 specification)
- 114kW (155PS) / 6,000rpm・196Nm (20.0kgf m) / 4,000rpm (RON91 specification)
- Installed vehicle
- Atenza / MAZDA6 Sedan (GJEFP)
- Atenza Wagon / MAZDA6 Wagon (GJEFW)
- Axela (BMEFS)
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- Name: SKYACTIV-G 2.0
- Type: Water-cooled in-line 4-cylinder DOHC 16 valves
- Displacement: 1997㏄
- Inner Diameter x Stroke: 83.5mm x 91.2mm
- Compression ratio: 13.0
- Fuel supply system type: direct injection (DI)
- Output/Torque
- 116kW (158PS) / 6000rpm・200Nm (20. 4kgf.m) / 4000rpm (before June 2018)
- 135kW (184PS) / 7000rpm・205Nm (20. 9kgf.m) / 4000rpm (after June 2018)
- Installed vehicle
- MX5 Roadster RF (NDERC)
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- Name: SKYACTIV-G 2.0
- Type: Water-cooled in-line 4-cylinder DOHC 16 valves
- Displacement: 1,997cc
- Inner Diameter x Stroke: 83.5mm x 91.2mm
- Compression ratio: 14.0
- Fuel supply system type: direct injection (DI)
- Output/Torque
- 73kW (99PS)/5,200rpm・142Nm (14.5kgf m)/4,000rpm
- Installed vehicle
- Axela Hybrid (BYEFP)
Technical
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Mazda SKYACTIV-G 2.0l Engine Technical details and specifications (2012-)
No. of cylinders 4/DOHC
Capacity 1998cc
Firing order 1-3-4-2
Suitable for unleaded petrol Yes
Minimum octane rating RON 95
Ignition system Description Map-DI
Trigger location Cam / Crankshaft
Fuel system Make Mazda MFI-d
Air metering Type Mass / MAP
Fuel main pump delivery pressure 4,1-4,9 bar
Oil pressure 1,1-1,7bar / 1500rpm
Radiator cap 0,93-1,22bar
Thermostat opens 80-84°C© Motor car History