Valve assembly for an exhaust gas recirculation system

A valve assembly for an exhaust gas recirculation system of an internal combustion engine, said valve assembly comprising:

• a housing comprising,
• a first interior surface defining an inlet bore extending along an inlet axis, wherein said inlet bore is configured to receive exhaust gas from the internal combustion engine,
• a second interior surface defining a housing bore extending along a housing axis that is perpendicularly oriented with respect to said inlet axis, wherein said housing bore is fluidly coupled to said inlet bore for receiving the exhaust gas from said inlet bore, and
• a third interior surface defining an outlet bore extending along an outlet axis, wherein said outlet bore is fluidly coupled to said housing bore for discharging exhaust gas from said housing bore;
• a valve seat disposed in said housing bore;
• a valve disposed in said housing bore and comprising a valve stem extending along said housing axis and a valve sealing member coupled to and moveable with said valve stem along said housing axis, wherein said valve is movable along said housing axis in said housing bore between a first position for allowing exhaust gas to flow from said inlet bore through said housing bore and into said outlet bore, and a second position different from said first position for restricting exhaust gas flow from said inlet bore through said housing bore and into said outlet bore;
• and
• optionally, a baffle at least partially disposed in said housing bore;
• wherein a first interior radius is defined between said valve stem and said second interior surface;
• wherein a second interior radius is defined between at least one of said valve stem and said second interior surface, said valve stem and said baffle, and said baffle and said second interior surface;
• and
• wherein said second interior radius is different from said first interior radius and configured to direct the flow of the exhaust gas in said housing bore to reduce swirl of exhaust gas in said housing bore.