Fiat releases “MultiAir engine technology”.

Fiat has introduced their Multiair engine technology. This breakthrough greatly increases fuel economy and engine performance while reducing emissions. Fiat has been working on this since the 1980's and shows it's forward thinking. It's an exciting 21'st century update to the internalcombustion engine and is another example of Fiat innovation.

MULTIAIR: THE ULTIMATE AIR MANAGEMENT STRATEGY

Multiair is the new electro-hydraulic system of engine valves for dynamic and direct control of air and combustion, cylinder by cylinder and stroke by stroke .Thanks to a direct control of the air through the intake engine valves without using the throttle, Multiair helps reducing fuel consumption; pollutant emissions are likewise reduced through combustion control.

Multiair is a versatile technology, easily applicable to all gasoline engines and with future potential developments also for Diesel engines.

BENEFITS:

-FUEL CONSUMPTION AND EMISSIONS REDUCTION
-INCREASE OF BOTH MAX POWER AND TORQUE
-ENHANCED PERFORMANCE AND FUN TO DRIVE

The Multiair Technology Benefits

The Multiair Technology potential benefits for gasoline engines exploited so far can be summarized as follows:

Maximum Power is increased by up to 10% thanks to the adoption of a power-oriented mechanical cam profile.

Low-rpm Torque is improved by up to 15% through early intake valve closing strategies that maximize the air mass trapped in the cylinders.

Elimination of pumping losses brings a 10% reduction of Fuel Consumption and CO2 emissions, both in Naturally Aspirated and Turbocharged engines with the same displacement.

Multiair Turbocharged and downsized engines can achieve up to 25% Fuel Economy improvement over conventional Naturally Aspirated engines with the same level of performance
Optimum valve control strategies during engine warm-up and internal Exhaust Gas.

Recirculation, realized by reopening the intake valves during the exhaust stroke, result in emissions reduction ranging from 40% for HC / CO to 60% for NOx.

Constant upstream air pressure, atmospheric for Naturally Aspirated and higher for Turbocharged engines, together with the extremely fast air mass control, cylinder-by-cylinder and stroke-by-stroke, result in a superior dynamic engine response.

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.

Sample of Simulation:

And Some key part photo of the Technology.