The eCharger can spin at speeds of up to 80,000 rpm and uses Aeristech’s patented switching technology to reduce the frequency of internal switching events by 60% compared to conventional motors, meaning a significant reduction in heat and improved efficiency on the basis of like-for-like electrical switchgear cost.

Aeristech is free to optimize the layout of motor magnets and windings without fear of overloading the controller with excessively high frequency requirements, leading to significant savings in material mass and cost.

Since launching the 48V eSupercharger in 2015, we have received significant interest from Tier 1s and vehicle manufacturers and been able to continually develop the technology. We have considerably improved cost, reduced weight and more than halved the package volume of the product. Now the core technology is fully established we are diversifying the product range to include a 12V offering, also capable of steady state operation, to meet additional market needs.

—Richard Wall, Aeristech CEO

Aeristech’s continuously-rated 48V eSupercharger is a cost-effective proposition, having production costs in-line with conventional transient-only boosters. It also has the additional benefit of offsetting the need for one stage of mechanical forced induction while simultaneously improving transient response, compared to conventional turbochargers.

The 48V eSupercharger has completed more than 1600 hours of back-to-back testing at Aeristech’s in-house facility, undergoing more than 500,000 boost events during 28,000 test cycles of a wide selection of operating modes. These ranged from short-bursts of high-power and maximum speed to continuous power outputs for extended periods, all l of which were endured by the eSupercharger without a single fault.

Aeristech’s eSupercharger technology has been publicly validated and exhibited in a prototype vehicle by MAHLE Powertrain UK. This vehicle showed the benefits of a powerful, continuously-rated electric supercharger to simplify the exhaust system and enable practical engine downsizing beyond the levels currently seen on the market.

The new eCharger satisfies a more well-known and immediate need for improved boost system response and refinement within the confines of a 12V architecture; it brings new and exciting attributes to the market, including low noise and low heat rejection, made possible by the very efficient motor control technology that Aeristech developed originally for its higher-power devices.

—Aeristech CTO Bryn Richards

The 48V eSupercharger is currently being showcased in a C-segment appraisal vehicle developed by MAHLE Powertrain UK Ltd. The car’s downsized 1.2 liter, 3-cylinder gasoline engine achieves 33 Bar BMEP at 1800rpm—an astonishing 313 N·m from an engine of this capacity—and a maximum power output of 193kW. In addition, it is estimated that Aeristech’s technology will reduce the vehicle’s CO₂ emissions by more than 25%.