Pressure Balanced Swing Valve for Engine System

An apparatus configured to regulate flow in a round exhaust passage of an internal combustion engine system, comprising;

• A round housing disposed within the round exhaust passage defining a first region and a second region, where the first region includes a first stopper and a first valve plate, where first stopper completely surrounds first region, and the first valve plate seats on the first stopper to seal first region, and where the second region includes a second stopper and second valve plate, where second stopper completely surrounds the second region, and the second valve plate seats on the second stopper to seal second region, and where the first stopper;
• a translating gear mechanism coupled between first and second plates, the mechanism coupling the first and second plates through a set of gears in the housing, such that forces acting to close first plate are translated through mechanism to act to open the second plate, and vice versa;
• and
• an actuator to move the translating mechanism, where such movement causes both the first and second plates to rotate concurrently.

An system for an engine, comprising:

• a turbocharger having a bypass;
• and
• a valve apparatus configured to regulate exhaust gas flow in the bypass, the apparatus having a first stopper frame disposed within the exhaust passage and defining a first flow region of the exhaust passage;
• a second stopper frame disposed within the exhaust passage and defining a second flow region of the exhaust passage;
• a valve hub disposed between a portion of the first stopper frame and a portion of the second stopper frame external the first and second flow regions, a valve plate translator disposed within an internal region of the valve hub, a first half-moon shaped valve plate rotateably coupled to the valve plate translator, wherein the first valve plate is disposed within the exhaust passage upstream of the first stopper frame, a second half-moon shaped valve plate rotateably coupled to the valve plate translator, wherein the second valve plate is disposed within the exhaust passage downstream of the second stopper frame, and wherein the valve plate translator is configured to translate a first force urging the first valve plate toward the first stopper frame from a location upstream of the first stopper frame to a second force urging the second valve plate toward the second stopper frame from a location downstream of the second stopper frame, and where the first valve plate rotates about a first axis located upstream of a second axis about which the second valve plate rotates.