Pierburg secondary air pumps of two-stage radial flow design (Fig. 2) have been established in the market. A secondary air pump working on the principle of a side-channel blower
(Fig. 3) is the latest member of the Pierburg pump family. The service-proven radial flow blower lends itself to manifold applications and can resort to a comprehensive portfolio of
components available worldwide which allows for their adaptation to virtually all and any customer requests.
The new side-channel blower excels by an extremely quick air flow build-up and its high delivery capacity at minimal space requirements. When having to overcome increased exhaust
gas backpressure, a typical situation with gasoline turbo engines, the side-channel blower deploys the full range of its benefits.