论文部分内容阅读
人们对提高单缸功率和增压压力及降低柴油机价格的要求将日益迫切，这就要求未来增压器的增压压力能提高到4．5。文中阐述了压气机转子叶片数对压气机特性场的影响，以及对一种新开发的涡轮叶片的计算结果和测试工作。介绍了一种新系列涡轮增压器的详细结构及有关振动和流动特性的研究结果。在具有足够的喘振安全性的情况下，当增压比π＝4．5时涡轮增压器效率约达60％。
People’s demand for increasing single-cylinder power and boost pressure and lowering the price of diesel engines will be increasingly pressing. This will require that the turbocharger boost pressure be raised to 4.5 in the future. In this paper, the influence of the compressor rotor blade number on the characteristic field of the compressor is expounded, and the calculation results and the test work on a newly developed turbine blade are described. The structure of a new series of turbochargers and the research results on vibration and flow characteristics are introduced. With sufficient surge safety, turbocharger efficiency is about 60% when boost ratio π = 4.5.