Van, Truck, Trailer, Bus and Coach Aftermarket News in Ireland

Allison Transmission to unveil electric propulsion solution for low-floor buses

Commercial vehicle propulsion solutions firm, Allison Transmission is to introduce its new ABE Series at the Advanced Clean Technology Expo in California.

This e-axle advanced ultra-low floor electric bus powertrain system is one of the world’s most powerful and compact fully integrated electric axles for the transit bus market.

The ABE Series integrates dual electric motors, a single- or multi-speed gearbox (depending on e-axle model), oil coolers, pumps and power electronics into a bolt-in system that replaces the entire traditional powertrain within the existing frame. It meets the power and space demands of the transit bus industry, including heavy double-decker, articulated and three door buses.

David S. Graziosi, Allison Transmission President and CEO stated: “The ABE Series replaces the traditional powertrain system with the most compact, powerful electric propulsion system available.”

The Allison ABE Series can operate without restrictions at regular highway speeds, and on all allowable grades.  The system can handle 100 per cent torque in regenerative braking. With an axle rating up to 28,660 pounds (13 tonnes), the system provides more power and torque than any other e-powertrain system in its class on the market.

With a dual motor, it has continuous axle output power of 536 horsepower (400 kilowatts) and peak output power of 738 horsepower (550 kilowatts). A single speed e-axle option also is available. Its proprietary cooling allows for industry-best continuous motor power and allows the vehicle to run closer to peak power for longer durations.

An attractive feature for bus manufacturers is the system’s compact design. The bolt-in ABE Series fits existing bus frames and suspensions, creating more space for battery packs and other critical electric vehicle components. The standard system is configured for a 28-inch (700-millimeter) walk through, but has an optional 39-inch (1,000-millimeter) configuration. This makes the system applicable for 12 metre low-floor city and double-decker buses, 18 metre articulated buses and three door buses.