公开(公告)号：US11175274B2

公开(公告)日：2021-11-16

申请号：US16429851

申请日：2019-06-03

Applicant: Caterpillar Inc.

Inventor： Yanchai Zhang ,  Kyle Walton ,  Richard Carpenter ,  Venkata Dandibhotla ,  Baoyang Deng

IPC: G01N33/28 ,  F01M11/10

Abstract: A fluid degradation monitoring system may detect a replacement of a fluid of a machine. The fluid degradation monitoring system may determine, after detecting the replacement of the fluid, a first degradation estimate of the fluid using a first technique based on characteristics relating to an operation of the machine. The fluid degradation monitoring system may detect a transition in a value of a dielectric constant of the fluid from a first phase to a second phase. The fluid degradation monitoring system may determine, after detecting the transition in the value of the dielectric constant, a second degradation estimate of the fluid using a second technique based on characteristics relating to the fluid.