公开(公告)号：WO2009070271A1

公开(公告)日：2009-06-04

申请号：PCT/US2008/013088

申请日：2008-11-24

Applicant: CATERPILLAR INC. ,  GIBSON, Dennis, H. ,  STOCKNER, Alan, R. ,  HESS, Amy, M.

Inventor： GIBSON, Dennis, H. ,  STOCKNER, Alan, R. ,  HESS, Amy, M.

IPC: H01L41/053 ,  F02M51/06

CPC classification number: F02M51/0603 ,  F02M2200/26 ,  H01L41/053

Abstract: A method of making a piezoelectrically actuated device (82) includes the steps of compressing a piezoelectric element (30) toward a compression state which is based on a target preload for the piezoelectric element (30), and elastically deforming a casing (40) for the piezoelectric element (30) toward a spring state which is also based on the target preload for the piezoelectric element (30). The method further includes plastically deforming the casing (40) about the subassembly (12) when the piezoelectric element (30) and the casing (40) are at their respective compression state and spring state to set a preload of the piezoelectric element (30) at the target preload.

Abstract translation: 一种制造压电元件（82）的方法包括以下步骤：将压电元件（30）压缩到基于压电元件（30）的目标预载荷的压缩状态，并使壳体（40）弹性变形 所述压电元件（30）朝向所述压电元件（30）的目标预载荷的弹簧状态。 该方法还包括当压电元件（30）和壳体（40）处于它们各自的压缩状态和弹簧状态时使壳体（40）围绕子组件（12）塑性变形，以设定压电元件（30）的预载荷， 在目标预载。

公开(公告)号：WO2008085276A3

公开(公告)日：2009-01-22

申请号：PCT/US2007025530

申请日：2007-12-13

Applicant: CATERPILLAR INC ,  STOCKNER ALAN R ,  IBRAHIM DANIEL R ,  GAVAISES MANOLIS ,  THEODORAKAKOS ANDREAS

Inventor： STOCKNER ALAN R ,  IBRAHIM DANIEL R ,  GAVAISES MANOLIS ,  THEODORAKAKOS ANDREAS

IPC: G06F17/50

CPC classification number: G06F17/5018 ,  G06F2217/16

Abstract: A method (100) is provided for predicting the likelihood of cavitation damage occurring on a surface (14a) of a hydrodynamic component (10). The method may include creating (102) a computational fluid dynamics (CFD) simulation of the hydrodynamic component, wherein creating the CFD simulation includes simulating a fluid proximal to the surface of the hydrodynamic component. The method may also include selecting (103) a location on the surface of the hydrodynamic component, wherein the selected. location is exposed to the simulated fluid. The method may further include determining (104) the mean pressure and standard deviation, the standard deviation of the rate of change in pressure, the mean void percentage and standard deviation, and the standard deviation of the rate of change in void percentage for the fluid at the selected surface location. The method may also include analyzing (105) at least one of the mean pressure and standard deviation, the standard deviation of the rate of change in pressure, the mean void percentage and standard deviation, and the standard deviation of the rate of change in void percentage for the fluid at the selected surface location to predict the likelihood of cavitation damage occurring at the selected surface location.

Abstract translation: 提供了一种用于预测在流体动力部件（10）的表面（14a）上发生的空穴破坏的可能性的方法（100）。 该方法可以包括创建（102）流体动力部件的计算流体动力学（CFD）模拟，其中创建CFD模拟包括模拟流体动力部件表面附近的流体。 该方法还可以包括选择（103）流体动力部件的表面上的位置，其中所选择的。 位置暴露于模拟流体。 该方法还可以包括确定（104）平均压力和标准偏差，压力变化率的标准偏差，平均空隙百分比和标准偏差以及流体的空隙率变化率的标准偏差 在选定的表面位置。 该方法还可以包括分析（105）平均压力和标准偏差中的至少一个，压力变化率的标准偏差，平均空隙百分比和标准偏差以及空隙率变化率的标准偏差 在所选择的表面位置处的流体的百分比，以预测在所选择的表面位置处发生气穴损伤的可能性。

公开(公告)号：WO2008027146A3

公开(公告)日：2008-07-31

申请号：PCT/US2007017094

申请日：2007-07-31

Applicant: CATERPILLAR INC ,  STOCKNER ALAN R ,  COX GLENN B ,  CHEN QIANG ,  MCCLURE THOMAS R ,  MILLER ROBERT L ,  WILEY STEPHEN M ,  GONG XIAOHUI

Inventor： STOCKNER ALAN R ,  COX GLENN B ,  CHEN QIANG ,  MCCLURE THOMAS R ,  MILLER ROBERT L ,  WILEY STEPHEN M ,  GONG XIAOHUI

IPC: F01N3/025 ,  F02M43/04 ,  F02M61/16

CPC classification number: F01N3/0253 ,  F01N3/2066 ,  F01N3/30 ,  F01N2610/08 ,  F01N2610/1453 ,  F01N2610/1493 ,  F02M43/04 ,  F02M61/162 ,  F02M67/02 ,  F02M69/08 ,  Y02T10/24

Abstract: A fluid injector (4-2) for 'an exhaust treatment device (40) is disclosed. The fluid injector may have a housing (70) at least partially forming a fluid chamber (98). The housing may have a central axis (90), and a fluid passagewa (80) configured to supply fluid to the fluid chamber. The supply of fluid may be in a tangential direction relative to the central axis. The injector (42) can provide mixing with pressurized air and can be used to regenerate a particulate trap (53).

Abstract translation: 公开了一种用于排气处理装置（40）的流体注射器（4-2）。 流体注射器可以具有至少部分地形成流体室（98）的壳体（70）。 壳体可以具有中心轴线（90）和被配置为向流体室供应流体的流体通道（80）。 流体的供应可以相对于中心轴线处于切向方向。 注射器（42）可以提供与加压空气的混合，并且可以用于再生颗粒捕集器（53）。

公开(公告)号：WO2008085276A2

公开(公告)日：2008-07-17

申请号：PCT/US2007/025530

申请日：2007-12-13

Applicant: CATERPILLAR INC. ,  STOCKNER, Alan, R. ,  IBRAHIM, Daniel, R. ,  GAVAISES, Manolis ,  THEODORAKAKOS, Andreas

Inventor： STOCKNER, Alan, R. ,  IBRAHIM, Daniel, R. ,  GAVAISES, Manolis ,  THEODORAKAKOS, Andreas

CPC classification number: G06F17/5018 ,  G06F2217/16

Abstract: A method (100) is provided for predicting the likelihood of cavitation damage occurring on a surface (14a) of a hydrodynamic component (10). The method may include creating (102) a computational fluid dynamics (CFD) simulation of the hydrodynamic component, wherein creating the CFD simulation includes simulating a fluid proximal to the surface of the hydrodynamic component. The method may also include selecting (103) a location on the surface of the hydrodynamic component, wherein the selected. location is exposed to the simulated fluid. The method may further include determining (104) the mean pressure and standard deviation, the standard deviation of the rate of change in pressure, the mean void percentage and standard deviation, and the standard deviation of the rate of change in void percentage for the fluid at the selected surface location. The method may also include analyzing (105) at least one of the mean pressure and standard deviation, the standard deviation of the rate of change in pressure, the mean void percentage and standard deviation, and the standard deviation of the rate of change in void percentage for the fluid at the selected surface location to predict the likelihood of cavitation damage occurring at the selected surface location.

Abstract translation: 提供了一种用于预测在流体动力学部件（10）的表面（14a）上发生的空穴破坏的可能性的方法（100）。 该方法可以包括创建（102）流体动力部件的计算流体动力学（CFD）模拟，其中创建CFD模拟包括模拟靠近流体动力部件表面的流体。 该方法还可以包括选择（103）流体动力部件的表面上的位置，其中所选择的。 位置暴露于模拟流体。 该方法还可以包括确定（104）平均压力和标准偏差，压力变化率的标准偏差，平均空隙百分比和标准偏差以及流体的空隙率变化率的标准偏差 在选定的表面位置。 该方法还可以包括分析（105）平均压力和标准偏差中的至少一个，压力变化率的标准偏差，平均空隙百分比和标准偏差以及空隙率变化率的标准偏差 在所选择的表面位置处的流体的百分比来预测在所选择的表面位置处发生气蚀损伤的可能性。