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Fiat Chrysler developing straight-six engine, patent indicates

A recent filing adds bones to rumours to a return of the inline six-cylinder engine format for the Italian-American automaker.


A new patent seems to confirm rumours Fiat Chrysler (FCA) is developing a new turbocharged inline six-cylinder petrol engine.

Mopar Insiders has discovered a patent on the US Patent and Trademark Office website for exhaust gas recirculation system for a turbocharged petrol engine.

The patent, which was approved April this year, features an explanatory diagram with a straight-six engine.

Sources have told the website, the inline six-cylinder engine will have a displacement of around 3.0 litres and use "E-Booster" technology to reduce turbo lag.

Power for the engine family is expected to range from around 270kW up to about 390kW for performance variants.

Given the packaging restraints of a straight-six engine, it's likely this motor will be restricted to vehicles based on a rear- and all-wheel drive platform.

Within the current FCA product range, this includes cars as diverse as the Jeep Grand Cherokee, Gladiator and Wrangler, Alfa Romeo Giulia and Stelvio, Ram's pickup trucks, and all Maserati vehicles.

Should such an engine make it into production, it could be used to replace V6 and some V8 offerings from these brands.

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