|0.9 TwinAir. Click to enlarge.|
Fiat is introducing a new two-cylinder 0.9 Turbo TwinAir 105 HP engine for the 2014 Alfa Romeo MiTo sport mini. The gasoline engine delivers 105 hp (72 kW) at 5500 rpm and maximum torque of 145 N·m (107 lb-ft) at 2000 rpm/min, with combined cycle fuel consumption of 4.2 l/100 km (56 mpgUS ), equivalent to 99 g CO2/km. (The 0.9 Turbo TwinAir is also offered in the Fiat 500 L.)
This is the lowest consumption of any of the gasoline or diesel MiTo engines, while power delivery and torque are the second-highest of the MiTo gasoline range. Top speed for the MiTo with the 0.9-liter engine is 184 km/h (114 mph) and it accelerates from 0 to 100 km/h in 11.4 seconds. Specific power is almost 120 hp/liter, a value on a par with sportier engines.
|2014 MiTo. Click to enlarge.|
Fiat’s two-cylinder TwinAir engine family made its debut with the TwinAir 85 HP in the Fiat 500 in 2010. Fiat had previewed the two-cylinder at the Geneva show earlier that year. (Earlier post.)
The new TwinAir family engine combines the concept of downsizing (displacement and weight reduction) with technologies including supercharging with high-efficiency turbocharger; integration of the exhaust manifold in the cylinder head; and the new MultiAir intake valve control system. The engine is also equipped with a stop-start system.
With its unique intake cam profile, the MultiAir second generation further optimises thermodynamic efficiency of the engine by modulating the amount of exhaust gas recirculated in the combustion chamber (internal EGR).
At launch, the MiTo offered (earlier post) two gasoline engines (78 bhp 1.4-liter and 155 bhp 1.4-liter turbo) and one turbodiesel (120 bhp 1.6 JTDM), all from Fiat Powertrain, will be available at launch. In 2009, Fiat introduced a 1.4-liter turbocharged gasoline engine equipped with the new MultiAir air handling system (earlier post) on the MiTo. (Earlier post.)
In addition to the new 0.9-liter unit, the 2014 MiTo offers 4 other gasoline engines: 70 HP 1.4; 78 HP 1.4; 135 HP 1.4 MultiAir Turbo Petrol (with manual gearbox or Alfa TCT automatic transmission); and the 170 HP 1.4 MultiAir Turbo Petrol. Two turbodiesels are offered: 85 HP 1.3 JTDM and 120 HP 1.6 JTDM. The engine range also includes the 120 HP 1.4 LPG Turbo.