柴油机效率的进一步改善,要求有高效率的增压器。因此,近年来在M.A.N.涡轮增压器上加强了发展工作。在这里,径流式压气机是一个重要部分。通过现代计算方法的应用,结合大量的试验工作,优化了进气部分、带后弯叶片的叶轮和扩压器系统,在压比约为4以内的广泛流量范围内彼此配合良好。压气机的最高效率达到87％,涡轮增压器的效率随不同尺寸及运用点的位置而达65％～71％。 The further improvement of diesel engine efficiency requires a highly efficient supercharger. Therefore, development work has been stepped up on the turbocharger M.A.N. in recent years. Radial compressors are an important part here. Through the application of modern calculation methods, combined with a large number of experimental work, the intake part, the impeller with back-curved blades and the diffuser system are optimized and cooperate well with each other over a wide flow range with a pressure ratio of about 4. The maximum efficiency of the compressor reaches 87%. The efficiency of the turbocharger can reach 65% ~ 71% with different sizes and positions of the points.