Hyzon’s eAxle technology to enable hydrogen, battery trucks

Hyzon Class 8 truck on road
Hyzon Motors Inc.

Hyzon Motors Inc., a global supplier of zero-emission hydrogen fuel cell powered commercial vehicles, has announced the development of a new eAxle design which provides extremely high efficiency for 6x4 Class 8 commercial vehicles, the company says.

Hyzon says its eAxle eliminates right-angle hypoid gears and uses one motor per wheel with optimized performances both at low speed and high speed. Paired with a virtual differential, the design achieves efficiency of up to 97 percent, compared with the industry-standard 95 percent.

The eAxle can reduce the motor-to-wheel loss as much as 40 percent, and further allows full torque regenerative braking. With this innovation, Hyzon expects to incorporate in its next generation Class-8 heavy trucks an all-in-one electric powertrain that can be maintained easily and at a low cost, while providing best-in-class performance with an estimated electrical fuel economy of up to 19.7 mpge at full load over the CARB HHDDT drive cycle.

Hyzon expects the driving performance of its Class-8 heavy trucks to outpace competing EVs, with a peak power of 950kW, ability to climb 20 percent grades, a 0-60 acceleration rate of less than 20 seconds with a fully loaded trailer, and speeds up to 75 mph governed electronically.

Hyzon expects to achieve this by using specialized motors in each tandem, which will combine to produce the impressive efficiency levels. Additionally, Hyzon’s eAxle may create a significant weight reduction, crucial to maintaining payload levels for both battery vehicles and hydrogen vehicles. The technology is currently pending patent.

Hyzon expects to manufacture eAxles for its hydrogen fuel cell powered heavy- and medium-trucks in its U.S. facilities, with initial sample models ready for deployment next year. This innovation comes ahead of Hyzon’s public listing via a definitive business combination agreement with Decarbonization Plus Acquisition Corporation.        

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