Pressure pulse communication in an engine intake manifold

Abstract

A servo-operated rotary vane valve is intended for external assembly through an opening in an engine inlet manifold passage with an integral rib formed therein. Baffling surfaces on the edge of the vane minimize pressure pulse communication over the rib when the valve is in the closed position.

1 . A motorized rotary valve assembly comprising: 
 (a) a housing including a mounting surface and a motor drive, wherein the housing is configured for insertion into an aperture formed in a flow passage to be valved, the housing having an opening for accessing the motor drive; and    (b) a vane valve member associated exteriorly with the housing and operatively connected with the motor drive through the opening for rotation relative to the housing, the vane valve member having a flow baffling surface along an edge thereof, wherein the housing and the valve member are adapted for insertion as a unit through the aperture and located therein by the mounting surface.    
   
   
       2 . The assembly defined in  claim 1 , wherein the flow baffling surface includes an offset edge of the vane valve member.  
   
   
       3 . The assembly defined in  claim 1 , wherein the housing has at least one portion that is configured to be received in the aperture.  
   
   
       4 . The assembly defined in  claim 1 , wherein the vane valve member is connected to the motor drive by a centrally disposed shaft.  
   
   
       5 . The assembly defined in  claim 1 , wherein the vane valve member has a rectangular cross section.  
   
   
       6 . The assembly defined in  claim 1 , wherein the vane valve member includes a plurality of stiffening ribs formed integrally therewith.  
   
   
       7 . The assembly defined in  claim 1 , wherein the motor drive includes a rotatable shaft extending externally to the housing with the vane valve member mounted thereon.