Fiat has rolled out the production version of its long-awaited two-cylinder gasoline engine family called TwinAir that's has been developed by FPT (Fiat Powertrain Technologies). The first car to receive the new turbocharged engine is the Fiat 500, in both three-door and convertible forms, with sales to begin from September, 2010.
The innovative 0.9-liter two-cylinder gasoline unit implements several technologies, including a small-sized turbine, start and stop and the firm's MultiAir electro-hydraulic valve management system that reduces fuel consumption and emissions by controlling air directly via the inlet valves, without using the throttle.Fiat says that compared with a medium-sized four-cylinder of equal performance, the new Twinair engine is significantly shorter (-23%) and lighter (-10%), while returning 30% lower fuel consumption.