Duryea Technologies (founded in 1996 under the name “eCycle” with the objective of commercializing hybrid and electric motorcycles) has developed an electric supercharger for use in the consumer and commercial vehicle markets.
Superchargers compress the intake charge to increase the amount of air delivered to an engine, which results in combustion that is more complete, and therefore of greater power.
Conventional superchargers are gear- or belt-driven by the engine, and output is limited by engine speed. Unlike a conventional supercharger, electric superchargers are powered by a battery. Duryea Technologies says this allows its supercharger to take full advantage of enhanced combustion to improve performance and fuel economy at low engine speeds, where mechanically driven superchargers and exhaust driven turbochargers are ineffective.
The electric supercharger can increase low-end torque by up to 100% for rapid acceleration.
Duryea’s electric superchargers consist of a SolidSlot brushless motor/generator and a centrifugal blower; the supercharger spends 7kW to get 40 kW of engine performance.