• Mar 30th 2010 at 9:05AM
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Fiat is widely recognized for its achievements in several automotive-related technologies. The company is credited as the creator of the common rail diesel engine, which is employed by virtually all automakers now, and they are credited with the automated manual transmission, also in widespread usage. The company says its newest crowning achievement – the MultiAir induction technology – will make its way here to the States with the release of the Fiat 500 and the company believes that the technology will prove so valuable that all automakers will once again follow its lead.

According to Fiat, a million of its engine will utilize MultiAir technology within the next three years, but they don't see the application of the technology ending there. As Fiat vice president of communication Richard Gadeselli said, "Eventually all gasoline engines will have this."

Initial testing has shown that the MultiAir technology can boost power by 10 percent, increase low-end torque by 15 percent and improve fuel economy at the same time. The technology could be applied to diesel engines and larger gasoline engines. Currently, Fiat is employing the technology on 4-cylinder engines. However, the company notes that gains would be even larger on bigger engines and the system is fully compatible with turbocharging. Fiat claims MultiAir can give an efficiency boost of up to 25 percent on some vehicles.

Though Honda is credited with variable valve timing, Fiat has been working on the MultiAir setup for 15 years. MultiAir takes variable valve timing to new heights and the company is so confident in the design, they are willing to bet virtually everything on it.

[Source: Ward's Auto]

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    • 1 Second Ago
      • 5 Years Ago
      This is a novel way of achieving variable valve timing. Very impressive if the numbers re to be believed. However. 25%; Get real! Iam willing to believe 6-9% until it is conclusively demonstrated otherwise. I'm looking forward to following this development like many others, But I expect it will be anther Fix It Again Tony type thing. This is for no other reason than it appears to be Prius-esk. (To coin a term) This is used to denote a technology that is more trouble than it is worth. Ask yourself this; would you buy one that has 100k mi. and ten years on it and therefore out of warrantee. All this gadgetry looks good when it is new but when the novelty wears off it is just a money pit and the environment is still the same. Diminishing returns for Dummies!
      • 5 Years Ago
      I cant wait to see this engine tech wide spread. The 500 cant come soon enough IMO. I am also hoping that the larger Punto/Panda (cant remember the name) comes over aswell.
      • 5 Years Ago
      why not just a revolving cylinder valve lying on top of the combustion chamber..
      why not just a rocket piston on a pivot off to the side moving frictionless in a curved cylinder..
      • 5 Years Ago
      I don't think this system will be adopted by others as FIAT thinks it will.

      And VTEC is hydraulically actuated by oil pressure.

        • 5 Years Ago
        Multiair is unproven, Valvetronic, Valvematic, and to a certain extend so it VVEL is proven.
      • 5 Years Ago
      I'd like to see a turbo MutliAir engine combined with a small ~15kW electric motor and battery pack to push the city fuel economy towards the highway levels of 5L/100km and the 0-60 times down towards 8 seconds.
        • 5 Years Ago
        You get 4L/100kms out of a 1.6L M-Jet 2 Fiat Bravo on the motorways mate. You dont need all the other gizmo's to get that. Even less on the Punto Evo's new Multijet 2 1.3L engine. Downsizing is the way to go. All these cars boast great CO2 emmissions figures too.

        I have to say - It's the one decent thing about European cars. Were paying so much for our fuel that our car companies have to deliver the goods.

        And to "CAMPER" - I havent read one review yet of Multi-Air technology which states that its un-prooven. Quite the opposite. Every review I've read here in Europe and here in Ireland has said that the torque/power increase is great. That in itself is a good achievement in a time where people want powerful cleaner cars.
      • 5 Years Ago
      From Wikipedia, Honda wasn't the first

      Automotive use

      Fiat was the first auto manufacturer to patent a functional automotive variable valve timing system which included variable lift. Developed by Giovanni Torazza in the late 1960s, the system used hydraulic pressure to vary the fulcrum of the cam followers (US Patent 3,641,988). The hydraulic pressure changed according to engine speed and intake pressure. The typical opening variation was 37%.

      Alfa Romeo was the first manufacturer to use a variable valve timing system in production cars (US Patent 4,231,330). The 1980 Alfa Romeo Spider 2.0 L had a mechanical VVT system in SPICA fuel injected cars sold in the United States. Later this was also used in the 1983 Alfetta 2.0 Quadrifoglio Oro models as well as other cars. The system was engineered by Ing Giampaolo Garcea in the 1970s.
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