forevertom
No doubt you will have seen the press releases about Multi Air. Here are some more bits of info.
What drives the changes are often based around legaslative requirements and Euro 5 is just being effected by the Fiat Group starting Sept 09 with the Alfa 955 (Mito) and will be coming in on other FGA models as stated in the following press release back in March 09
Application of the Multiair Technology to FPT Engines
The first world-wide application of the Multiair technology will be the Fire 1400cc 16V Naturally Aspirated and Turbocharged engines.
The second application is a new Small Gasoline Engine (SGE - 900cc Twin-cylinder) where cylinder head design has been specifically optimized for the Multiair actuator integration. Here again, there will be both a Naturally Aspirated and a Turbocharged version. A specific Turbocharged engine version will be bi-fuel (gasoline- CNG).
Thanks to radical downsizing, the Turbocharged Small Gasoline Engine achieves Diesel-like CO2 emission levels, which are further reduced in its Natural Gas version with CO2 emissions lower than 80 g/km in many vehicle applications.
The next bit of legislation is Euro 6 which will start to come in Sept 2014 and will no doubt see new enhancements then also.
If you want to find out more then go to
http://www.fptpowertrain.com/index_main.htmthis is the Powertrain bit of FGA.