Kenworth SuperTruck 2: Pioneering Efficiency and Innovation on the Open Road

KENWORTH’S SUPERTRUCK 2: A NEW STANDARD IN TRUCKING

Kenworth set an ambitious goal to achieve a 100% improvement in freight efficiency over their 2009 T660 semi-truck, which was previously their most fuel-efficient model. Remarkably, they exceeded this target, achieving an impressive 136% improvement, as noted by Jim Walenczak, a senior company executive.

This leap in efficiency is primarily due to the enhanced fuel economy of 12.8 miles per gallon (mpg) and a significant reduction in the combination weight by over 7,000 pounds, enabling a greater payload capacity. These improvements make the SuperTruck 2 an exceptionally fuel-efficient tractor-trailer combination.

Visually, the SuperTruck 2 distinguishes itself with an advanced aerodynamic design, comparable to the sleek Tesla Semi. Although not fully electric, the aerodynamics of the SuperTruck 2 play a critical role in its performance. “We began with an ideal aerodynamic shape,” stated Joe Adams, Kenworth’s chief engineer. This design not only minimizes aerodynamic drag but also incorporates a new powertrain.

The SuperTruck 2 is equipped with a mild-hybrid turbodiesel system. It features a PACCAR MX-11 engine, generating 440 horsepower, paired with a 48-volt electric generator and a PACCAR TX-12 automatic transmission. The system utilizes next-generation lithium-ion batteries that recharge through regenerative braking, powering various electrical components such as fans, steering, and HVAC pumps, which were previously mechanically driven.

On the diesel front, Kenworth achieved a record 55.7% engine efficiency, a notable increase from the current standard of 47%. “Achieving 55.7% was a significant milestone,” explained Maarten Meijer, PACCAR’s senior engineering manager for advanced technology.

Kenworth also introduced a new trailer design to accompany the SuperTruck, resulting in a combined weight of approximately 26,100 pounds—about 7,100 pounds lighter than typical configurations. This weight reduction allows for a smaller 80-gallon fuel tank without compromising the vehicle’s range.

The interior of the SuperTruck 2 is equally innovative. It features a “center driver” cab design and a revamped sleeper compartment. Highlights include a 15-inch digital display with a configurable gauge layout, a parabolic windshield, and digital mirrors that reduce drag and offer enhanced rearview monitoring with night vision capabilities.

When compared to the Peterbilt SuperTruck II concept, which debuted at CES 2024, Kenworth’s SuperTruck 2 slightly outperforms with a 136% efficiency boost compared to Peterbilt’s 132%. While both trucks employ mild-hybrid systems, Kenworth’s design and efficiency enhancements make it a standout.

Comparing the Kenworth SuperTruck 2 to the Tesla Semi reveals key differences. While the Tesla Semi offers up to 500 miles on a single charge, its reliance on charging infrastructure and the downtime required for recharging pose challenges for long-haul operations. In contrast, the diesel-powered SuperTruck 2 offers greater range and quicker refueling, providing a practical advantage for long-distance hauling.

Kenworth’s SuperTruck 2 exemplifies a future where fuel efficiency and innovative design converge. As the transportation industry continues to evolve, advancements like these will play a crucial role in shaping the future of road freight.

Kenworth’s SuperTruck 2 is not merely a concept but a bold step towards more efficient and sustainable transportation, poised to leave a lasting impact on the road freight industry.