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Technologies designed to reduce emissions and fuel consumption without sacrificing power and torque for towing include:

Ultra-thin Plasma Transfer Wire Arc (PTWA) spray coating in cylinder bores for lighter, low-friction wear surface, instead of cast-in-place or pressed-in iron liners. Stellantis says this technology (already used by automakers such as Ford and Nissan) is 10 times more wear-resistant than conventional liners.

Engine start-stop functionality with robust starter motor for quick restarts

Engine-mounted water-to-air charge cooler with dedicated cooling circuit (single inlet for SO/dual inlet for HO)

Dual water-cooled exhaust manifolds integrated in cylinder head

Continuously variable displacement oil pump with integrated scavenge stage tailors pump output to engine demand, reducing frictional losses

Asked why Stellantis forged ahead and swallowed the expense of an all-new engine rather than partnering with BMW, which has vast experience with turbocharged inline six-cylinder engines, Bly turned the tables.

“We’re open to anyone who would like to use this engine,” he says.

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from

https://www.autoweek.com/news/a39525460/stellantis-hurricane-engine-details/