废气涡轮增压器涡轮结构及工艺设计

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1、目录前.言·······················································································································11废气涡轮结构设计····························································································21.1工作轮结构设计·····························

2、································································21.1.1工作轮结构·································································································21.2相关参数计算····················································································

3、··············21.2.1设计原始数据····························································································21.2.2废气在单级涡轮内的膨胀过程及效率······················································22废气涡轮工艺设计······························································

4、······························72.1叶轮的材料·····································································································72.2材料的获得……····························································································72.3造型材料和造型方法……········

5、······································································72.4零件的获得……······························································································73结论·······················································································

6、····························8参考文献················································································································9前言废气涡轮增压器涡轮结构及工艺设计1905年瑞士工程师波希(AlfredBuchi)首先提出涡轮增压柴油机概念，这是一件对内燃机发展具有深远意义的大事，五十年代以来，涡轮增压技术在国内外均得到飞速的发展，它已经成为增加内燃机功率，降低单位

7、功率重量，降低制造成本的最有效方法。自从20世纪70年代涡轮增压在车用发动机上得到推广以后，更有了突飞猛进的发展。目前，己被世人公认为内燃机技术的发展方向之一，迄今仍保持着方兴未艾的发展势头。涡轮增压是一项新技术，几十年的发展历史有力地表明，涡轮增压是提高发动机功率和改善经济性的最有效措施，也是发动机强化的必然途径，它已成为当前内燃机发展的重要方向。涡轮增压是使柴油机动力装置降低成本、缩小体积、减轻重量最成功的方法。实践证明，对于安装尺寸受限制的应用(如船舶、机车、卡车等)上是最受欢迎的，涡轮增压在降低比油[10]耗、减少噪声

8、以及高原性能等方面胜过非增压发动机。60年代增压技术在中速柴油机上得到普遍应用，使强化指标有了很大提高；70年代的石油危机，又促使经济性指标(包括降低燃油耗率和使用劣质燃油)得到很大改善：80年代各国对环境污染的限制更为严格，制定了极为苛刻的环保法规，迫使柴油机制造厂商各自寻