Pressure balanced swing valve for engine system

Abstract

As one example, an apparatus configured to regulate flow in an exhaust passage of an internal combustion engine system is provided. The apparatus comprise a housing disposed within the 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 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.

Description

technical field [0001] The present invention relates to a device configured to regulate flow in an exhaust passage of an internal combustion engine system, in particular to a pressure balanced rotary valve for a flow device of an internal combustion engine system. Background technique [0002] A valve is used in an internal combustion engine to prevent fluid from flowing downstream in a passage to control a turbocharger. Rotary valves are useful in engine exhaust due to their ability to effectively seal the exhaust passage allowing little fluid to flow downstream of the valve. Because of its configuration relative to the direction of flow, a rotary valve requires a very large amount of energy to operate. [0003] One example of turbocharger control is described in US Patent No. 5,634,333. In this example is recognized the need to properly seal the exhaust passage as efficiently as possible. It uses a modified rotary valve to seal the exhaust passage. The modification con...

AI Technical Summary

Problems solved by technology

The piping used to drive the actuator in the modified rotary valve increases the size and cost of the engine due to the addition of additional components

Finally, butterfly valves do not require very high actuation force to open, but do not effectively seal the passage, allowing large volumes of fluid to flow downstream through the valve when it is in the closed position

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