公开(公告)号：US20170138018A1

公开(公告)日：2017-05-18

申请号：US14940934

申请日：2015-11-13

Applicant: Caterpillar Inc.

Inventor： Matthew J. BESCHORNER ,  Naoto FUNABIKI ,  Brett J. JANSON ,  Darren A. BLUM

IPC: E02F9/26 ,  E02F9/22

CPC classification number: E02F9/2289 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2292 ,  E02F9/2296 ,  E02F9/267 ,  F15B19/005 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/30595 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/634 ,  F15B2211/6343 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/855 ,  F15B2211/857 ,  F15B2211/87 ,  G05B19/0425 ,  G05B19/46

Abstract: A hydraulic system is disclosed for use with. a machine. The hydraulic system may have an actuator, a valve associated with the actuator, at least one sensor configured to generate signals indicative of performance parameters of the hydraulic system, and a controller. The controller may be configured to determine at least one of a diagnostic movement and position of at least one of the fluid actuator and valve required to perform a health cheek, and to correlate the signals generated only during completion of the diagnostic movement or only when the at least one of the fluid actuator and valve are in the diagnostic position to values of the performance parameters. The controller may also be configured to make a comparison of the values of the performance parameters to expected values, and to determine a health of the hydraulic system based on the comparison.