Biplab Das 
Kenworth has unveiled its SuperTruck 2, a futuristic Class 8 truck developed under the U.S. Department of Energy’s initiative to create more efficient freight haulers. This truck represents a significant leap forward in design and technology, aiming to improve freight efficiency and set new standards for the industry. Unlike its counterparts from Volvo, Daimler, Navistar, and Peterbilt, Kenworth’s SuperTruck 2 pushes the envelope with its advanced features and radical design.
The evolution of SuperTruck program
The SuperTruck program began with the goal of increasing freight efficiency by 50% over a 2009 baseline. For SuperTruck 2, the target was to achieve another 50% improvement, doubling the efficiency gains. Kenworth has exceeded these expectations, claiming a 136% improvement in freight efficiency compared to the 2009 T660 model.
“Kenworth’s SuperTruck 2 demonstrates significant advancements in freight efficiency,” the company stated. This achievement is a result of improvements in engine efficiency, aerodynamics, and weight reduction.
Key technological innovations
The SuperTruck 2’s efficiency gains are driven by several key technologies:
Hybrid Powertrain: The Paccar MX-11 diesel mild hybrid engine, paired with the Paccar TX-12 automatic transmission, delivers a 55.7% increase in engine efficiency. The 48-volt mild hybrid system powers ancillaries like the engine fan, power steering, HVAC pumps, and exhaust heater, reducing engine load.
Aerodynamic Design: The truck features a 48% improvement in aerodynamic efficiency. Innovations include a parabolic windshield, digital mirrors, and an integrated trailer with adjustable air suspension to minimize drag.
Weight Reduction: By taking 7,100 pounds out of the tractor-trailer combination, the truck can haul more weight before reaching the legal maximum. This weight reduction contributes significantly to its improved freight efficiency.
Fuel Efficiency: The SuperTruck 2 achieves an average of 12.8 miles per gallon, a notable feat in an industry where double-digit fuel efficiency is rare. This is partly due to using 10 low rolling resistance tires instead of the traditional 18, and a smaller 80-gallon fuel tank.
Interior innovations and driver comfort
Inside the cab, Kenworth has focused on driver comfort and functionality:
Central Seating Position: A central seating position is fronted by a 15-inch screen, reminiscent of Tesla’s Semi design.
Enhanced Sleeper Cab: The sleeper cab features a dinette area with a rotating table and a Murphy bed. A lithium-ion battery, charged via regenerative braking, powers the truck’s overnight needs.
Optimized Driver Access: Doors are positioned closer to the driver, and the hood and fairings move with the cab, providing better accessibility and safety.
Future commercialisation prospects
While the SuperTruck 2 showcases impressive technology, the question remains: how much of this innovation will be commercialized, and when? Kenworth acknowledges that not all features will make it to production immediately. However, the company emphasizes that the project was designed with production feasibility in mind.
Addressing market challenges
The SuperTruck 2’s development comes at a time when the automotive industry faces significant challenges. High interest rates, rising inflation, and shifting consumer preferences toward hybrid vehicles have impacted EV demand. However, Kenworth’s advancements in hybrid technology and fuel efficiency position it well to address these market dynamics.
Kenworth’s SuperTruck 2 represents a bold step forward in freight efficiency and truck design. By leveraging hybrid powertrains, aerodynamic innovations, and weight reduction, Kenworth has set new benchmarks for the industry. While full commercialisation may take time, the SuperTruck 2 offers a glimpse into the future of trucking, where efficiency and advanced technology drive progress.
