| 摘要 |
A turbocharger for an internal combustion engine has a compressor operable as a single stage or multi-stage compressor. A first compressor stage includes a first compressor wheel carried by a shaft, an axially extending first inlet and a radially extending first outlet. A second compressor stage includes a second compressor wheel carried by the shaft and axially extending second inlet and a radially extending second outlet. An interstage duct fluidly connects in series the first outlet of the first compressor with the second inlet of the second compressor. The interstage duct includes a bypass opening includes in communication with an ambient environment. A valve is positioned within the interstage duct. The valve is moveable to and between a first position to close the interstage duct and a second position to close the bypass opening.
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