| 摘要 |
A turbocharged engine includes an internal combustion engine and a variable geometry turbocharger. The turbocharger is adjustable to operate efficiently under various engine operating and environmental conditions. The turbocharger includes a turbine and compressor, with the compressor including a compressor housing, an impeller rotatably mounted in the housing, and an adjustable diffuser vane assembly. The diffuser vane assembly includes a plurality of pivotal diffuser vanes spaced about the impeller and a vane rotation drive that interconnects the vanes and permits simultaneous adjustment of the diffuser vanes to improve the efficiency and operating range of the turbocharger. The diffuser vane assembly also includes a vane locking drive operable to engage the pivotal vanes and prevent vane movement during turbocharger operation.
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