发明授权
- 专利标题： Hydraulic accumulator fluid charge estimation system and method
- 专利标题（中）： 液压蓄能器液体充量估算系统及方法
-
申请号： US13178797申请日： 2011-07-08
-
公开(公告)号： US08984872B2公开(公告)日： 2015-03-24
- 发明人: Bryan E. Nelson , Jeremy T. Peterson , Jeffrey L. Kuehn
- 申请人： Bryan E. Nelson , Jeremy T. Peterson , Jeffrey L. Kuehn
- 申请人地址： US IL Peoria
- 专利权人： Caterpillar Inc.
- 当前专利权人： Caterpillar Inc.
- 当前专利权人地址： US IL Peoria
- 代理机构： BakerHostetler
- 主分类号： G01M99/00
- IPC分类号： G01M99/00
摘要：
A method for estimating a fluid charge of a hydraulic accumulator includes determining a first accumulator pressure at a first time with a pressure sensor, the first time during accumulator charging; determining a second accumulator pressure at a second time with the pressure sensor, the second time during accumulator charging; determining a first fan speed at the first time; determining a second fan speed at the second time; and estimating the fluid charge of the hydraulic accumulator as a function of the first accumulator pressure, the second accumulator pressure, the first fan speed, and the second fan speed.