| 摘要 |
As one example, a method of operating a vehicle propulsion system including an engine having an intake manifold communicating with two compressors arranged in separate intake passages is provided. The method includes limiting a boost pressure provided to the engine by the first and the second compressors in response to a total flow rate of air consumed by the engine, said first and second compressors cooperating to provide the total flow rate; and choking the first compressor having a higher flow rate during an imbalanced flow condition between the first and the second compressors to limit a further reduction of a flow rate of intake air through the second compressor before the second compressor experiences surge.
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