| TwinAir engine | |
|---|---|
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| Overview | |
| Manufacturer | Fiat Powertrain Technologies (2010-2011) Fiat Group Automobiles (2011-2014) FCA Italy (2014-) |
| Also called | SGE (Small Gasoline Engine) |
| Production | 2010–present |
| Layout | |
| Configuration | Straight-two |
| Displacement | 1.0 L (964 cc) (naturally aspirated) 0.9 L (875 cc) (turbocharged) |
| Cylinder bore | 83.5 mm (3.29 in) (naturally aspirated) 80.5 mm (3.17 in) (turbocharged) |
| Piston stroke | 88 mm (3.5 in) (naturally aspirated) 86 mm (3.4 in) (turbocharged) |
| Cylinder block material | Cast iron |
| Cylinder head material | Aluminium |
| Valvetrain | 8-valve, chain-driven SOHC, MultiAir |
| Compression ratio | 11.2:1 (naturally aspirated) 10.0:1 (turbocharged) |
| Combustion | |
| Turbocharger | Single (in some versions) |
| Fuel system | Indirect injection |
| Fuel type | Gasoline/CNG, bifuel |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Output | |
| Power output | 60 PS (44 kW) (naturally aspirated) 80 PS (59 kW) (bifuel turbo) 85 PS (63 kW) or 105 PS (77 kW) (turbo) |
| Specific power | 62 PS/L (TwinAir 60) 97 PS/L (TwinAir 85) 120 PS/L (TwinAir 105) |
| Torque output | 88 N⋅m (65 lb⋅ft) at 3,500 rpm (naturally aspirated) 140 N⋅m (103 lb⋅ft) at 2,500 rpm (bifuel turbo) 145 N⋅m (107 lb⋅ft) at 2,000 rpm (turbo) |
| Chronology | |
| Predecessor | FIRE engine |
| Successor | Fiat Global Small Engine |
Fiat's TwinAir engine is a Straight-twin engine designed by Fiat Powertrain Technologies as part of its Small Gasoline Engine (SGE) family — employing Fiat’s MultiAir hydraulically actuated variable valve timing and lift technology.
Offered in a variety of FCA vehicles in turbocharged and naturally aspirated variants, the engine is noted for its reduced size, weight, fuel consumption and CO2 emissions.
In the 2011 International Engine of the Year awards, the 875 cc (53.4 cu in) TwinAir won Best Engine Under 1 Litre, Best New Engine, Best Green Engine and International Engine of the Year. [1] Dean Slavnich, editor of Engine Technology International and co-chairman of the International Engine of the Year Awards, called the TwinAir one of the "all-time great engines.”[2]
- ^ "Fiat 875cc TwinAir". ukipme.com. Archived from the original on 2013-02-05. Retrieved 2012-01-03.
- ^ "Fiat's 0.9-Liter TwinAir Scoops the "International Engine of the Year 2011" Award". Carscoops. May 18, 2011.