Freightliner SuperTruck II

For Freightliner SuperTruck II, designers and engineers focused on staying close to the architecture of the present-day Cascadia in choosing what to leave in and what to take out. Four areas received attention: enhanced tractor aerodynamics, powertrain improvements, energy management and low-rolling resistance tires. Each set benchmarks for freight efficiency and a reduced carbon footprint, overall goals of the Freightliner SuperTruck II program.

Engine Efficiency

DTNA claims SuperTruck II features the most efficient powertrain Freightliner has integrated into a truck. The Freightliner SuperTruck II consumes 5.7% less fuel than SuperTruck I. A prototype Detroit 13-liter engine features two-stage turbo and interstage cooling paired with a 13-speed overdrive transmission.

SuperTruck II features a split cooling system that consists of high-temperature and low-temperature cooling circuits working in tandem with two-stage turbocharging and exhaust gas recirculation cooling on the engine.