SRT’s New Fast-Spool Turbo Gadget Makes the Hurricane I6 Launch Like a V8

Turbo lag will be cool, nevertheless it’s the enemy of sheer efficiency. While early boosted vehicles walloped drivers with frantic acceleration at excessive revs, engineers have thought and thunk for years on eradicate the facility delay. There are just a few methods to do it—like operating sequentials, with a smaller turbo and one other bigger one for larger horsepower—however Stellantis‘ SRT Performance Division has one other resolution. It includes an e-compressor that spools huge turbos faster than exhaust fuel can.

Now, you could be like me and surprise, “Doesn’t that already exist?” It’s really fairly a bit totally different from what Porsche does on the 911. Whereas that tech options an in-built motor-generator unit that sits between the compressor and inducer, SRT’s gadget—known as eBoost Air—sits upstream of the Hurricane inline-six’s twin turbos. And whereas Porsche makes use of the MGU to immediately spin the turbo, this SRT doo-hickey is solely force-feeding air to the turbos extra shortly.

SRT defined in a press launch that the entire thought is to make the engine drive extra like a supercharged V8. Of course, that’s what lots of people need anyway, however Stellantis developed the Hurricane engine household for a purpose. Ram could be embracing the Hemi another time, nevertheless it looks like this expertise might discover its dwelling in future high-performance Jeep fashions.

When the exhaust fuel stream lastly catches as much as the eBoost Air, the compressor merely disengages, and the characteristic is bypassed totally. It doesn’t recuperate any spent vitality, though it does require a 48-volt electrical system to perform. The eBoost Air is barely a “rapid-development proof of concept” for now, and Stellantis has work to do earlier than it implements the tech on any Hurricane-equipped mannequin within the United States. (At current, solely sure non-Hurricane Jeeps and Ram 1500s with the Hemi V8 have a 48-volt mild-hybrid eTorque setup, so a possible resolution might contain a secondary battery—although that’s unconfirmed and probably undecided at this stage.)

Fitting this into the Grand Cherokee’s engine bay took some doing. The six-cylinder Hurricane has but to make an look in a manufacturing model of Jeep’s midsize SUV, so even the fundamentals wanted to be addressed. On prime of that, SRT engineers needed to make room for what’s successfully a 3rd air consumption for the little electrical compressor. Somehow, the group nonetheless managed to face the undertaking up in simply seven weeks. Yes, weeks.

SRT notes that eBoost Air doesn’t add any further energy to the Hurricane; it solely helps the engine attain larger energy ranges in a faster style. The twin-turbo, 3.0-liter inline-six is already potent by itself, particularly on the subject of the high-output variant with 540 horsepower and 510 lb-ft of torque. I personally loved the momentary lag once I examined the Ram 1500 Tungsten a few years in the past, however when you’re racing the quarter-mile, this eBoost Air gadget ought to be an actual assist.

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