Title:
HYDRAULIC CONTROL SYSTEM HAVING CYLINDER STALL STRATEGY
Document Type and Number:
WIPO Patent Application WO/2012/166225
Kind Code:
A3
Abstract:
A hydraulic control system (48) for a machine (10) is disclosed. The hydraulic control system may have a hydraulic circuit (50), and a pump (58) configured to supply pressurized fluid to the hydraulic circuit. The hydraulic control system may also have a first fluid actuator (20) fluidly connected to receive pressurized fluid from the hydraulic circuit, a first valve arrangement (54) movable to control a flow of fluid to the first fluid actuator, a second fluid actuator (26) fluidly connected to receive pressurized fluid from the hydraulic circuit, and a second valve arrangement (56) movable to control a flow of fluid to the second fluid actuator. The hydraulic control system may additionally have a controller (58) in communication with the first and second valve arrangements. The controller may be configured to make a determination of a stall condition of the first fluid actuator, and to selectively change a flow command directed to the second valve arrangement based on the determination.
Inventors:
PETERSON GRANT (US)
ANDERSON RANDALL (US)
CESUR RUSTU (US)
BRINKMAN JASON (US)
ANDERSON RANDALL (US)
CESUR RUSTU (US)
BRINKMAN JASON (US)
Application Number:
PCT/US2012/026845
Publication Date:
January 24, 2013
Filing Date:
February 28, 2012
Export Citation:
Assignee:
CATERPILLAR INC (US)
PETERSON GRANT (US)
ANDERSON RANDALL (US)
CESUR RUSTU (US)
BRINKMAN JASON (US)
PETERSON GRANT (US)
ANDERSON RANDALL (US)
CESUR RUSTU (US)
BRINKMAN JASON (US)
International Classes:
F15B21/08; E02F9/22; F15B13/02; F15B21/02
Foreign References:
| US20070074510A1 | 2007-04-05 | |||
| EP1300595A2 | 2003-04-09 | |||
| US20080041467A1 | 2008-02-21 | |||
| US3911942A | 1975-10-14 |
Attorney, Agent or Firm:
STEWART, Leonard et al. (Peoria, IL, US)
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