公开(公告)号：US20190316496A1

公开(公告)日：2019-10-17

申请号：US15952578

申请日：2018-04-13

Applicant: Caterpillar Inc.

Inventor： Yanchai ZHANG ,  Zhaoxu DONG ,  Arun RAJENDRAN ,  Yifeng LU ,  Xuefei HU ,  Lidi CHEN ,  Rodney D. HARMS

IPC: F01L1/24 ,  F02D41/00 ,  G07C5/08 ,  G07C5/00 ,  F02D41/24

Abstract: Some examples described herein may involve determining an advance timing window between the valve opening or closing and a designated time that the valve is scheduled to open or close; determining a closing velocity of the valve; monitoring an engine speed of the engine; determining valve lash information based on the advance timing window, the closing velocity, and the engine speed, wherein the valve lash information identifies a magnitude of the valve lash or whether the magnitude of the valve lash associated with the valve satisfies a threshold; and performing an action based on the valve lash information.

公开(公告)号：US20250137885A1

公开(公告)日：2025-05-01

申请号：US18499921

申请日：2023-11-01

Applicant: Caterpillar Inc.

Inventor： Wenming Zhao ,  Xuefei HU ,  Cheng Yu ,  Zhiyong Hu ,  Daojie Zhang

IPC: G01M17/03

Abstract: In one instance, disclosed herein is a computer-implemented method for monitoring an undercarriage of a track-type machine, the computer-implemented method comprising: accessing a reduced order model (ROM) corresponding to the track-type machine; receiving an estimated wear level of at least one undercarriage component of a track-type machine and machine signal data generated by the track-type machine; generating an updated estimated wear level of the at least one undercarriage component using the estimated wear level, the machine signal data, and the ROM; and comparing the updated estimated wear level of the at least one undercarriage component to a wear level threshold.

公开(公告)号：US20240255373A1

公开(公告)日：2024-08-01

申请号：US18161522

申请日：2023-01-30

Applicant: Caterpillar Inc.

Inventor： Yanchai ZHANG ,  Zhaoxu DONG ,  Xuefei HU ,  Daryl James BELSHAN

IPC: G01M3/02 ,  E21B43/26 ,  G01M13/00

CPC classification number: G01M3/02 ,  E21B43/2607 ,  G01M13/00

Abstract: A system obtains sensor data that includes: first vibration data related to vibration of an inlet manifold of a pump of a hydraulic fracturing rig, pump speed data related to a speed of the pump, pressure data related to a pressure of an outlet manifold of the pump, second vibration data related to vibration of a packing of the pump, and leakage data related to a leakage of fracturing fluid by the packing. The system processes the first vibration data and the pump speed data to determine that an inlet valve of the pump and an outlet valve of the pump have not failed, and thereby processes the pressure data to determine that the packing of the pump has failed. The system determines, based on at least one of the second vibration data and the leakage data, a failure severity level associated with the packing of the pump.

公开(公告)号：US20170091358A1

公开(公告)日：2017-03-30

申请号：US14866980

申请日：2015-09-27

Applicant: CATERPILLAR INC.

Inventor： Yanchai ZHANG ,  Yang WANG ,  Zhaoxu DONG ,  Xuefei HU

IPC: G06F17/50

CPC classification number: G06F17/5018 ,  G06F17/5086 ,  G06F2217/76 ,  G07C3/00

Abstract: A method and a system for providing a model-based machine health prognosis are disclosed. According to certain embodiments, the method includes obtaining one or more performance parameters of a machine. The method also includes determining whether cavitation occurs based on the one or more performance parameters. If cavitation occurs, the method further includes simulating, based on the one or more performance parameters, the occurrence of the cavitation using a computational fluid dynamics (CFD) model. The method further includes determining, based on output from the simulation of the cavitation, a remaining useful life of the machine using a finite element analysis (FEA).