发明名称 |
Locomotive diesel engine turbocharger and turbine stage constructed with turbine blade vibration suppression methodology |
摘要 |
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.
|
申请公布号 |
US7280950(B2) |
申请公布日期 |
2007.10.09 |
申请号 |
US20040762396 |
申请日期 |
2004.01.22 |
申请人 |
ELECTRO-MOTIVE DIESEL, INC. |
发明人 |
HEILENBACH JAMES W.;CHOBOT ANTHONY T.;MEYERKORD DANIEL J. |
分类号 |
G06F7/48;B23Q17/00;G01M7/00;G01M99/00 |
主分类号 |
G06F7/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|