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ji ru tong dao nei qi ti mo ca sun shi he qi ti kuo ya ya qi ji wei ke de she ji
Author(s): 
Pages: 40-61
Year: Issue:  0
Journal: Vehicle Engine

Keyword:  扩压压气机蜗壳蜗壳通道摩擦损失通道面积压气机特性面积修正系数环量出口管蜗牛壳;
Abstract: <正> 压气机蝸壳分为两种型式,一种是变截面的“蝸牛壳”型,一种是等截面的“元筒”型。为了实现涡轮增压器的小型化,目前,在小型涡轮增压器上采用“蜗牛壳”的比例越来越大。因为二者相比较,“蜗牛壳”具有容积小的特点。由于“元筒”型压气机蜗壳通道容积较大,通道内的气流速度较低,不考虑通道内的气体摩擦损失和气体扩压还是允许的。容积小,通道内气流速度较高的“蜗牛壳”则不然,如不考虑上述两项就不可能设计出一个尺寸较小、效率较高、流量适用范围广的压气机蜗壳。
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