The companies claim their electric motors are 75 percent smaller than equivalent-output motors for automotive applications thanks to engineering improvements in heat management.

Much of the bulk of high-torque electric motors, such as those typically used in automotive applications for electrified vehicles, is in the heat management systems engineered into the motor casings, and efforts to reduce this bulk typically result in loss of torque output in heavier usage. DHX claims its design reduces bulk by up to 75 percent without losing thermal management efficiency, thus retaining the motor's expected output in heavy usage.

A smaller, lighter motor reduces weight and volume requirements, which improves the efficiency of the vehicle, resulting in greater range.

In an electric motor, the windings generate most of the heat produced during use. Air or liquid cooling is usually used to dissipate this heat into the motor's frame and case through the stator, which, unlike the windings, is fixed to those elements. In the DHX design, a heat exchanger in the winding pulls heat away and to the casing more efficiently.