| TwinAir engine | |
| Manufacturer: | Fiat Powertrain Technologies (2010-2011) Fiat Group Automobiles (2011-2014) FCA Italy (2014-) |
| Aka: | SGE (Small Gasoline Engine) |
| Production: | 2010–present |
| Predecessor: | FIRE engine |
| Successor: | Fiat Global Small Engine |
| Configuration: | Straight-two |
| Displacement: | 964cc (naturally aspirated) 875cc (turbocharged) |
| Bore: | 83.5abbr=onNaNabbr=on (naturally aspirated) 80.5mm (turbocharged) |
| Stroke: | 88mm (naturally aspirated) 86mm (turbocharged) |
| Block: | Cast iron |
| Head: | Aluminium |
| Valvetrain: | 8-valve, chain-driven SOHC, MultiAir |
| Compression: | 11.2:1 (naturally aspirated) 10.0:1 (turbocharged) |
| Turbocharger: | Single (in some versions) |
| Fuelsystem: | Indirect injection |
| Fueltype: | Gasoline/CNG, bifuel |
| Oilsystem: | Wet sump |
| Coolingsystem: | Water-cooled |
| Power: | 60abbr=onNaNabbr=on (naturally aspirated) 80PS (bifuel turbo) 85PS or 105PS (turbo) |
| Specpower: | 62 PS/L (TwinAir 60) 97 PS/L (TwinAir 85) 120 PS/L (TwinAir 105) |
| Torque: | 88Nm at 3,500 rpm (naturally aspirated) 1400NaN0 at 2,500 rpm (bifuel turbo) 1450NaN0 at 2,000 rpm (turbo) |
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 875cc 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's TwinAir debuted at Internationale Automobil-Ausstellung 2007 in the Fiat Panda Aria concept car.[3] as an 80PS, turbocharged, CNG-hydrogen mix and gasoline bifuel unit.
The production TwinAir engine was launched at the 2010 Geneva Motor Show in 85PS, turbocharged gasoline form and became available later in 2010 in the Fiat 500.[4]
Later, it was launched also in other FCA vehicles such as the 2012 Punto. The naturally aspirated 1.0 L 60PS version became available on the 2012 Fiat Panda and the 500 in select markets, and so two other turbocharged 0.9 L variants: the 80 PS bi-fuel CNG/petrol unit (on Panda, 500L and Ypsilon) and the 105 PS unit (on MiTo, Punto, 500L and 500).