Invention Grant
- Patent Title: Dual mode hydraulic circuit control and method
- Patent Title (中): 双模液压回路控制及方法
-
Application No.: US12049969Application Date: 2008-03-17
-
Publication No.: US07874151B2Publication Date: 2011-01-25
- Inventor: Hong-Chin Lin , Salem Haggag
- Applicant: Hong-Chin Lin , Salem Haggag
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc
- Current Assignee: Caterpillar Inc
- Current Assignee Address: US IL Peoria
- Agency: Leydig, Voit & Mayer
- Main IPC: F15B11/16
- IPC: F15B11/16 ; E02F9/22

Abstract:
A dual mode control system for a hydraulic circuit (200) having a variable displacement pump (216) includes at least two actuators, each controlled by a respective valve. The valves are connected in series with a pressure sensor (250) measuring a pressure of fluid between the first valve (224) and the second valve (234) and relaying a signal to the electronic controller (202). The electronic controller (202) operates in a first mode, varying the displacement of the pump (216) based on a command signal operating at least one of the valves, and operates in a standby mode, varying the displacement of the pump (216) based on the signal from the sensor, when both valves are in their respective neutral positions.
Public/Granted literature
- US20090229261A1 Dual mode hydraulic circuit control and method Public/Granted day:2009-09-17
Information query