A hurricane is coming as Stellantis unveils its new engine

Stellantide is definitely on the way to electrification. Yet the American-European car group still recognizes the role that internal combustion engines will still play in the years to come.

So Stellantis has developed a new 3.0-liter twin-turbo inline six-cylinder engine that offers an excellent blend of high power, better fuel economy and lower emissions – the Hurricane.

New main engine for STLA large and chassis vehicles

Stellantis Twin-Turbo Hurricane I-6 HO Engine
Via Stellantis

The name Hurricane might not sound as menacing as Hellcat or Demon, but it’s powerful on its own. It rivals V8 engines for performance while delivering 15% more efficiency than more powerful engines.

Still, the Hurricane 3.0-liter twin-turbo inline-six doesn’t have to be as powerful as the Hellcat, since it will serve as North America’s primary internal combustion engine for vehicles using the flats. -STLA Large and STLA Frame shapes.

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Stellantis propulsion systems engineers have created two distinct Hurricane variants. Optimized for fuel economy, the Hurricane Standard Output (SO) delivers over 400 hp and 450 lb-ft. of torque. Stellantis has optimized the High Output (HO) variant for big performance, tuning it to deliver over 500 hp and 475 lb-ft.

Specific horsepower and torque ratings vary with each vehicle model. The Hurricane boasts a wide, flat torque range, allowing it to maintain at least 90 percent of peak torque from 2,350 rpm to redline.

Aluminum block with PTWA cylinder coating

Engine Stellantis Twin-Turbo Hurricane I-6 SO
Via Stellantis

This new engine shares design features, including cylinder bore, stroke and spacing, with the globally produced 2.0-liter turbocharged inline-four engine available for several Jeep models. The aluminum block features cylinders with Plasma Transfer Wire Arc (PTWA) coating. This ultra-thin coating minimizes friction, improving efficiency while reducing emissions and fuel consumption.

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Additionally, the Hurricane features a suite of advanced technologies. These include two high-flow turbochargers (each powering three cylinders) with less inertia, allowing them to spin faster and provide boost at lower rpm than a single large turbo. Engineers have also optimized the turbochargers for each version of the Hurricane. Hurricane SO turbos deliver 22 psi of maximum boost, while Hurricane HO turbos deliver 26 psi.

Loaded with more than just twin turbos

Stellantis Twin-Turbo Hurricane I-6 HO engine with Twin Turbo badge
Via Stellantis

Other cutting-edge elements of the Hurricane include high-pressure (5,075 psi/350 bar) direct fuel injection with shaft-activated pumps, dual overhead camshafts with wide-range variable valve timing and fully independent and stop-start engine (ESS).

Engineers also installed an engine-mounted water-to-air charge cooler with a dedicated cooling circuit, continuously variable displacement oil pump and high-flow ball valve thermostat, as well as exhaust manifolds. water-cooled twins.

Source: Stellantis

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