Allison Unveils E-Axle Propulsion for Heavy-Duty Trucks
Allison Transmission unveiled an electrified e-axle system for medium-and heavy-duty trucks, a fully integrated electric powertrain system being tested in a Peterbilt Model 579.
The Allison AXE integrates one or two high-speed electric motors and a multi-speed transmission, eliminating the need for additional driveshafts and support structures.
Photo courtesy Allison
2 min to read
Allison officials unveiled the AXE electrified axle powertrain for trucks at ACT Expo April 24.
Credit:
Screenshot, Allision YouTube video
Allison Transmission has unveiled an electrified e-axle system for medium-and heavy-duty trucks, a fully integrated electric powertrain system designed to fit inside a standard frame along the axles of commercial trucks. The AXE Series features electric motors, a 2-speed gearbox, oil coolers and pumps. The offering also includes power electronics for a complete powertrain solution.
Ad Loading...
Allison officials said it is “the first e-axle in the heavy-duty truck industry to provide this level of power density, size and simplicity,” said David S. Graziosi, Allison Transmission president and CEO.
The Allison AXE Series has a 1-million-mile design life for medium- and heavy-duty trucks. The system integrates one or two high-speed electric motors and a multi-speed transmission, eliminating the need for additional driveshafts and support structures. A dual-motor axle has a continuous power of 536 hp (400 kilowatts) and peak output power of 738 hp (550 kilowatts). A tandem axle configuration is also available. The system can handle 100% torque in regenerative braking. The complete integration of the AXE Series delivers increased efficiency and continuous power through superior internal cooling, according to the company.
The AXE Series electric powertrain will be integrated in Peterbilt’s Model 579EV electric Class 8 truck for evaluation and testing. As a result, the truck features 1,475 hp (1,100 kilowatts).
The AXE Series is available in single and dual motor options to package the entire electric powertrain inside a standard frame that exists in almost every global commercial truck, including refuse trucks, school buses, and drayage and delivery trucks. This allows the e-axle to be a bolt-in solution by design, for efficiency in the installation process.
Allison also unveiled a compact electric propulsion solution for low-floor bus applications. It said the ABE Series is the first e-axle advanced ultra-low floor electric bus powertrain system in the market.
Watch to learn how Deflecktor's new wheel cover design is taking a simpler approach to aerodynamics, with an eye toward making it more practical for both trucks and trailers.
Aerodynamic wheel covers can deliver small but meaningful fuel-economy gains for fleets, and Deflecktor says its latest design aims to make the technology easier and more affordable to deploy.
When diesel prices are as volatile as they've been in 2026, it makes it tough for trucking fleets to plan and control costs. Breakthrough Fuel's Jenny Vander Zanden has insights on near-term savings strategies.
Hydrogen combustion engine trucks will be especially suitable over longer distances and in regions where there is limited charging infrastructure or time for recharging of battery-electric trucks, according to the company.
Trucking operators are slowing speeds, cutting empty miles, and declining unprofitable freight as diesel costs continue to rise due to conflict in the Middle East.
New guidance allows engine makers to replace problematic DEF sensors with NOx-based systems, aiming to reduce unnecessary derates and downtime caused by failures in the sensors designed to monitor diesel exhaust fluid on trucks.
