Today’s announcement that Chrysler Group LLC will debut Fiat’s 1.4-liter, in-line four-cylinder with Multiair technology, in North America starting in 2010 has lead to one question: What’s Multiair?
This is one of those times when an analogy between the human body and a car engine is actually apt.
Think of an engine’s RPMs like your heart rate. The faster your heart beats, the more air you need to breathe in to supply your body with oxygen. The same is true for an engine. Multiair gives the engine a more efficient breathing pattern at varying RPMs. Regardless of how quickly the RPMs are scaling up at the moment, the engine adjusts accordingly by opening and closing valves and allowing a certain amount of air to enter and escape.
It’s a great analogy (one which I didn’t come up with by the way) that really boils down to one healthy engine, or as Chrysler Group CEO Sergio Marchionne said today, “Multiair gives the engine the lungs of an athlete.” (Think Lance Armstrong).
You’ll be able to drive the first application of the Multiair in North America by the end of 2010 when it joins the lineup in the Fiat 500 (a first for the vehicle anywhere). And though the 1.4-liter is small, it’s mighty, packing 100 horsepower (75 kW) at 6,750 rpm and 95 lb.-ft. (129 Nm) of torque at 4,250 rpm. It goes without saying that this powerplant is efficient, with fuel economy savings of 10% and about the same amount less in C02 emissions.
For you turbo lovers, a turbo version is planned as well, delivering 25 percent fuel economy savings when compared to an equally powered V-6 engine.
What’s more, Multiair technology can be adapted to different types of engines, including diesels to significantly lower NOx, and is planned for Chrysler Powertrain's four-cylinder World Gas Engine and all-new Pentastar V-6.