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 (296), 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. |
申请人 |
CATERPILLAR INC.;NELSON, BRYAN, E.;PETERSON, JEREMY, T.;KUEHN, JEFFREY, L. |
发明人 |
NELSON, BRYAN, E.;PETERSON, JEREMY, T.;KUEHN, JEFFREY, L. |