Apparatus, system, and method for shaping a valve orifice

Abstract

An apparatus, system, and method are disclosed for optimizing a valve orifice shape. According to one representative embodiment, a method includes determining a specified relationship between a valve position and an output characteristic, and determining an orifice profile. The method also includes determining a relationship of an orifice area to the output characteristic. Further, the method includes shaping an orifice in a valve based on the orifice profile and the specified relationship between the valve position and the output characteristic. According to the method, the valve should approximately exhibit the specified relationship.

1 .- 7 . (canceled) 
     
     
         8 . A system for optimizing a valve for configurable response, the system comprising:
 an internal combustion engine;   a turbocharger; and   a rotary valve having an optimized orifice profile, wherein the orifice profile is optimized by:
 determining a specified relationship between a desired valve orifice position and a desired output characteristic; 
 determining an orifice profile based on an orifice area for the desired output characteristic; and 
 shaping an orifice in the valve based on the orifice profile, and the specified relationship between the desired valve orifice position and the desired output characteristic, such that the valve exhibits approximately the specified relationship. 
   
     
     
         9 . The system of  claim 8 , wherein the rotary valve comprises one of a barrel valve and a bypass valve. 
     
     
         10 . The system of  claim 8 , wherein the orifice comprises an orifice in the shape of a best fit triangle. 
     
     
         11 . The system of  claim 8 , wherein the orifice profile is shaped to form an enclosed flow-through passage formed in the rotary valve, the enclosed flow-through passage extending from an intake orifice on one side of the rotary valve to an outlet orifice on an opposite side of the rotary valve, wherein a cross-sectional shape and size of the enclosed flow-through passage are constant along the entire enclosed flow-through passage, wherein the orifice profile is configured to produce a linear relationship between a change in a position of the rotary valve and a change in a torque-speed of the engine such that the rotary valve produces a substantially uniform change in the torque-speed of the engine for a substantially uniform change in the position of the rotary valve. 
     
     
         12 . The system of  claim 8 , wherein the specified relationship comprises a linear relationship between a change in a position of a rotary valve and a change in the output characteristic 
     
     
         13 . The system of  claim 8 , wherein the specified relationship comprises a linear relationship between a rate of fluid flow through the rotary valve and a valve position. 
     
     
         14 . The system of  claim 8 , further comprising a controller configured to control rotation of the rotary valve. 
     
     
         15 . A valve system, comprising:
 a valve sleeve including a valve passage extending through the valve sleeve;   a valve positioned in the valve sleeve, the valve including a valve orifice, the valve movable with respect to the valve sleeve;   wherein the valve orifice includes an orifice profile configured to provide a linear relationship between a rate of fluid flow through the valve and a valve position.   
     
     
         16 . The valve system of  claim 15 , wherein the valve includes a rotary valve, and wherein the valve position includes a rotated position. 
     
     
         17 . The valve system of  claim 16 , wherein the rotary valve comprises one of a barrel valve and a bypass valve. 
     
     
         18 . The valve system of  claim 15 , where the orifice profile includes a best-fit triangle. 
     
     
         19 . The valve system of  claim 15 , wherein the orifice profile is shaped to form an enclosed flow-through passage formed in the rotary valve, the enclosed flow-through passage extending from an intake orifice on one side of the rotary valve to an outlet orifice on an opposite side of the rotary valve, and wherein a cross-sectional shape and size of the enclosed flow-through passage are constant along the entire enclosed flow-through passage 
     
     
         20 . The valve system of  claim 15 , further comprising a valve controller configured to control movement of the valve with respect to the valve sleeve.