Stellantis’ New Hurricane 4 Turbo Engine Debuts in 2026 Jeep Grand Cherokee
Key Insights
The Hurricane 4 Turbo produces 324 horsepower and 332 lb.-ft. of torque.
It features turbulent jet ignition (TJI) technology for fast, complete combustion, enhancing power and efficiency.
The engine uses a variable-geometry turbocharger, providing 90% of peak torque from 2,600-5,600 rpm.
It achieves 20% more power than Stellantis' current 2.0-liter DOHC I-4 while using 10% less fuel.
The engine design is flexible for conventional, hybrid, and plug-in hybrid powertrains.
Why this matters: This engine represents a significant advancement in combining power and efficiency, offering consumers a more eco-friendly option without sacrificing performance. The TJI technology, borrowed from racing engines, ensures optimal combustion for both power and reduced emissions.
In-Depth Analysis
The Hurricane 4 Turbo engine incorporates several key technologies to achieve its impressive performance.
Turbulent Jet Ignition (TJI):: This system uses a pre-chamber and spark plug to ignite a small amount of fuel, which then jets into the main combustion chamber, creating a faster and more complete burn.
Miller Cycle:: The engine employs a Miller Cycle operating strategy, closing intake valves early to optimize efficiency and reduce emissions.
Dual Fuel Injection:: The engine uses both port fuel injection and direct fuel injection, deploying each system based on engine status and driver demand.
Variable Geometry Turbocharger:: This turbocharger uses active vanes to deliver up to 35 psi of boost, providing significant power and torque at low engine speeds.
The engine block is made from a die-cast deep skirt aluminum, enhancing structural stiffness and minimizing noise, vibration, and harshness (NVH). The cylinder bores feature an ultra-thin, low-friction Plasma Transfer Wire Arc (PTWA) coating for increased wear resistance.
FAQs
Q: What is the horsepower and torque of the Hurricane 4 Turbo?
The engine produces 324 horsepower at 6,000 rpm and 332 lb.-ft. of torque from 3,000-4,500 rpm.
Q: What is turbulent jet ignition (TJI) technology?
TJI uses a small pre-chamber and spark plug to ignite fuel, which then jets into the combustion chamber for a faster, more complete burn.
Q: Where is the Hurricane 4 Turbo engine assembled?
The engine is assembled in Dundee, Michigan, with future production planned for Kokomo, Indiana.
Key Takeaways
The Hurricane 4 Turbo engine offers a powerful and efficient alternative to larger engines.
Key technologies like TJI and variable geometry turbocharging contribute to its performance and fuel economy.
The engine's design is versatile, accommodating conventional, hybrid, and plug-in hybrid powertrains.
The 2026 Jeep Grand Cherokee will be the first vehicle to feature this engine.
Discussion
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