公开(公告)号：US20050160598A1

公开(公告)日：2005-07-28

申请号：US10762396

申请日：2004-01-22

Applicant: James Heilenbach ,  Anthony Chobot ,  Daniel Meyerkord

Inventor： James Heilenbach ,  Anthony Chobot ,  Daniel Meyerkord

IPC: B23Q17/00 ,  G01M7/00 ,  G01M99/00 ,  G01M19/00

CPC classification number: G01M7/00 ,  Y10T29/4932 ,  Y10T29/49774

Abstract: A method for fabrication of a locomotive diesel engine turbocharger turbine stage so as to avoid harmonic vibration in the turbine blades when the engine is operated at pre-selected throttle settings. Upon determining throttle settings for the engine and modeling of the turbocharger therefor, at least one natural vibration frequency of the turbine blades and a turbine nozzle vane excitation frequency as a function of turbocharger rotation speed are determined. Then the data obtained is analyzed to ascertain whether at least one data coincidence, that is whether a rotation speed correlative of a throttle setting has a coincidence over a predetermined range of both a natural frequency and said turbine vane nozzle excitation. If not, the model is suitable for fabrication of the turbocharger; if so, the model is modified by changing blade stiffness and/or vane numbering until no data coincidences are present.

Abstract translation: 一种用于制造机车柴油发动机涡轮增压器涡轮机级的方法，以便当发动机以预选的节气门设置操作时，避免涡轮机叶片中的谐波振动。 在确定发动机的油门设置和对其进行建模的涡轮增压器时，确定涡轮叶片的至少一个固有振动频率和作为涡轮增压器转速的函数的涡轮喷嘴叶片励磁频率。 然后分析获得的数据，以确定至少一个数据是否一致，即是否与节气门设置相关的旋转速度与固有频率和所述涡轮叶片喷嘴激励两者的预定范围之间是一致的。 如果没有，该型号适合制造涡轮增压器; 如果是这样，通过改变叶片刚度和/或叶片编号来改变模型，直到不存在数据重合。