发明名称 |
HYDRAULIC CONTROL SYSTEM HAVING OVER-PRESSURE PROTECTION |
摘要 |
A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, an actuator, and a control valve configured to direct fluid from the pump to the actuator and from the actuator to the tank to move the actuator. The hydraulic system may also have a main relief valve movable away from a closed position to pass pressurized fluid to the tank when a pressure of the fluid directed to the actuator exceeds a first threshold pressure, and a controller in communication with the pump. The controller may be configured to selectively reduce a displacement of the pump after the main relief valve has moved away from the closed position when the pressure of the fluid directed to the actuator exceeds a second threshold pressure. |
申请公布号 |
EP2890903(A4) |
申请公布日期 |
2016.04.20 |
申请号 |
EP20130833452 |
申请日期 |
2013.08.29 |
申请人 |
CATERPILLAR INC. |
发明人 |
PETERSON, RANDAL, N.;EGELJA, ALEKSANDAR, M.;CESUR, RUSTU |
分类号 |
F15B21/08;E02F9/22;F15B1/02;F15B11/042;F15B13/02;F15B20/00;F15B21/04 |
主分类号 |
F15B21/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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