The Hansen Supercharger®
Hansen Engine has created and patented a continuously variable, positive-displacement supercharger. It supplies the pressured air an engine demands — efficiently, across both high and low torque operation. The result is a credible path to the fuel economy of a downsized three- or four-cylinder engine without surrendering the responsiveness drivers expect, and a genuine alternative to turbocharging.
The right airflow, precisely.
An engine’s air requirement changes constantly with load. The Hansen supercharger’s continuously variable displacement delivers exactly the mass flow needed to meet a driver’s power demand, with minimal system loss.
Above: the supercharger undergoing flow performance testing at the Ricardo labs in Detroit.
Conventional superchargers waste the work they create.
A fixed-displacement supercharger can only move one volume of air. To match a smaller demand, that air is either restricted or compressed and then dumped to atmosphere — either way, fuel-consuming work the engine performed for nothing.
The Hansen Supercharger® reduces the work the engine must do to provide the needed air mass at the proper pressure. Less wasted work means better overall fuel economy — the efficiency case, made mechanically rather than rhetorically.
Sense demand
Airflow requirement is read continuously as load changes.
Vary displacement
The mechanism adjusts its displacement to deliver only the air required.
Avoid the waste
No throttling loss, no dumped compressed air — the work done is the work used.