| 摘要 |
A valve assembly for use in an internal combustion engine is disclosed. The valve assembly includes a housing which defines a chamber. The housing further defines an outlet, a first inlet, and a second inlet, each of which is in fluid communication with the chamber. The valve assembly further includes a master valve positioned within the chamber. The master valve isolates the first inlet from the outlet when the master valve is positioned in a seated master position. The master valve places the first inlet in fluid communication with the outlet when the master valve is located in an open master position. The valve assembly still further includes a slave valve positioned within the chamber. The slave valve isolates the second inlet from the outlet when the slave valve is positioned in a seated slave position. The slave valve places the second inlet in fluid communication with the outlet when the slave valve is located in an open slave position. Movement of the master valve from the seated master position to the open master position causes movement of the slave valve from the seated slave position to the open slave position. The master valve moves a distance from the seated master position toward the open master position while the slave valve is positioned in the seated slave position. A method of controlling a flow of engine exhaust is also disclosed.
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