Here's what FIAT is giving America, the most efficient least polluting gasoline engines ever

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MARCH 08, 2009
Fiats Multi-Air Engine Breakthrough for 25% more Fuel Efficiency and Less Pollution


MultiAir turbocharged and downsized engines can achieve up to 25 per cent fuel economy improvement over conventional naturally aspirated engines with the same level of performance. Maximum power is increased by up to 10 per cent thanks to the adoption ofa power-orientated mechanical camshaft profile. Low RPM torque is improved by up to 15 per cent through early intake valve closing strategies that maximise the air mass trapped in the cylinders. Elimination of pumping losses brings a 10 per cent reduction in fuel consumption and CO2 emissions, both in naturally aspirated and turbocharged engines with the same displacement. Optimum valve control strategies during engine warm-up and internal exhaust gas recirculation, realised by reopening the intake valves during the exhaust stroke, result in emissions reductions ranging from 40 per cent for unburnt hydrocarbons and carbon monoxide (HC/CO), and up to a 60 per cent cut in oxides of nitrogen, (NOx). Constant upstream air pressure, atmospheric for naturally aspirated and higher for turbocharged engines, together with extremely fast air mass control, cylinder-by-cylinder and stroke-by-stroke, result in a superior dynamic engine response, and enhanced driving pleasure. MultiAir is applicable to all internal combustion engines, regardless of the fuel used. It can be adapted for diesel engines to reduce their NOx emissions and make particulate filters significantly more effective.

In short, an engine equipped with Fiat MultiAir technology is more powerful, more responsive across the entire engine speed range, uses considerably less fuel, and reduces all types of exhaust emissions by a substantial amount. It will also assist in enabling Fiat to maintain its lead in low emissions and low fuel consumption technology, which has seen Fiat crowned for the past two years as the number one car maker for the lowest range-wide CO2 emissions.
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These extraordinary environmentally positive engines will be built in the millions right here in America in a few years.