The votes have been tallied and Fiat's turbocharged 875-cc TwinAir two-cylinder engine has captured the title of Best New Engine of 2011, Green Engine of the Year, Sub 1.0-liter Engine of the Year and even the big one: International Engine of the Year, a first for Fiat.
It's only the second time – the first being Toyota's 1.0-liter VVT-i engine way back in 1999 – that a 1.0-liter or smaller engine has earned the title of International Engine of the Year. Given how complex the TwinAir mill is, who better to describe this frugal motor than its program manager, Gianni Mastrangelo:
The TwinAir crushed the competition (372 points), beating out the ever-popular Volkswagen 1.4-liter TSI Twincharger (346 points), which was bidding for its third consecutive win, by 26 points. Congrats to Fiat!We wanted an engine to fully demonstrate our downsizing capabilities and we needed a displacement that could fully exploit our MultiAir system. We concluded that a two-cylinder, 875-cc setup with a turbo was capable of realizing all our development targets. There were lots of problems to be solved during this project, keeping in mind that this architecture was new. The most important challenge to overcome was integrating the MultiAir system within the two-cylinder activation unit. Plus, we wanted the NVH of the TwinAir to be at least as good as that of a four-cylinder engine.
Source: autoblog
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