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- W2350245666 abstract "To solve dynamic and economic performance deterioration of pneumatic engine under high speed,the open timing of inlet valve and outlet valve was optimized.Based on thermodynamics,the model of pneumatic engine inner process was established,which obtained the influence of inlet valve and outlet valve's open timing on pneumatic engine's dynamic and economic performances separately.The results show that the dynamic and economic performances are improved when the inlet valve was opened earlier appropriately and the open timing of outlet valve is constant.And they are improved also when the outlet valve was opened earlier appropriately and the open timing of inlet valve is constant.The correctness of this model is validated by experiments.Finally,by taking power and gas loss rate as optimization objective,and utilizing the above established model,dimension-reduction algorithm is adopted for optimization calculation.The result of optimization indicates that for different speeds,the optimal open timing of inlet and outlet valve are different.At high speed,dynamic and economic performances are greatly enhanced.When rotating speed is higher than 2 000 r/min,power is increased by more than 20% while gas loss rate decreases more than 25%." @default.
- W2350245666 created "2016-06-24" @default.
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- W2350245666 date "2009-01-01" @default.
- W2350245666 modified "2023-09-27" @default.
- W2350245666 title "Influence of inlet and outlet valve's open timing on pneumatic engine and their optimal design" @default.
- W2350245666 hasPublicationYear "2009" @default.
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