Jet pump for gaseous medium

Abstract

A jet pump configured to control a feed of a gaseous medium, the jet pump comprising: a primary nozzle configured to feed a propellant and including a nozzle body and a nozzle needle longitudinally movable within the nozzle body so that a nozzle cross section of the primary nozzle is variably adjustable and closeable by the nozzle needle; a compression spring that urges the nozzle needle in a closing direction, wherein the nozzle needle includes a first pressure surface configured to be loaded with a pressure of the propellant in an opening direction that is opposite to the closing direction, and a second pressure surface configured to be loaded with a pressure of a secondary medium in the closing direction.

Dependencies are inferred from the claim text.