Supercharger air flow diverter

A supercharger system comprising:

• a supercharger having an inlet and an outlet;
• a re-circulation line that provides fluid communication between outlet and the inlet, the re-circulation line including a flow diverter having first and second portions within the inlet, the first portion defining a first re-circulation flow direction and the second portion defining a second re-circulation flow direction, the second re-circulation flow direction being angled relative to the first re-circulation flow direction, and the second portion being located at an outlet end of the re-circulation line;
• and
• a valve in the re-circulation line for opening and closing the re-circulation line, the flow diverter being positioned within the inlet of the supercharger and remaining stationary as the valve is opened and closed;
• wherein the second re-circulation flow direction maintains a fixed orientation relative to a main flow direction through the supercharger inlet housing at the location of the outlet end of the re-circulation line as the valve is opened and closed, and
• wherein the flow diverter includes a flow turning surface that provides a curved transition between the first and second portions such that recirculation air immediately exiting the second portion of the flow diverter has the same flow orientation as naturally aspirated air entering the supercharger.

A supercharger system comprising:

• a supercharger having an inlet and an outlet;
• a re-circulation line that provides fluid communication between the outlet and the inlet, the re-circulation line including a terminal end portion that extends within the inlet, the terminal end portion being configured to direct re-circulation flow into the inlet of the supercharger along a re-circulation direction that is angled no more than 45 degrees relative to a main flow direction through the inlet of the supercharger;
• and
• a valve in the re-circulation line for opening and closing the re-circulation line, a flow diverter having first and second portions within the supercharger inlet housing and remaining stationary as the valve is moved between open and closed operating positions, the flow diverter defining the re-circulation direction, wherein the flow diverter includes a flow turning surface that provides a curved transition between the first and second portions such that recirculation air immediately exiting the second portion of the flow diverter has the same flow orientation as naturally aspirated air entering the supercharger.