| 发明名称 | Reduced parasitic hydraulic fan system with reversing capability | ||
| 摘要 | A method is provided for controlling a hydraulic system having at least an implement pump, a fan-steering-braking (FSB) pump, a valve assembly, a fan drive system and one or more accumulators. The method may determine an operational state of a power source associated with the hydraulic system, actuate one or more valves of the valve assembly such that the FSB pump charges the accumulators and operates at least the fan drive system if the power source is operating at less than maximum power, and actuate one or more valves of the valve assembly such that the accumulators operate at least the fan drive system and such that the FSB pump supplements the implement pump as needed if the power source is operating at maximum power. | ||
| 申请公布号 | US9239085(B2) | 申请公布日期 | 2016.01.19 |
| 申请号 | US201213566374 | 申请日期 | 2012.08.03 |
| 申请人 | Caterpillar Inc. | 发明人 | Nelson Bryan Edward;Peterson Jeremy Todd |
| 分类号 | E02F9/22;F16D31/00 | 主分类号 | E02F9/22 |
| 代理机构 | Miller, Matthias & Hull LLP | 代理人 | Miller, Matthias & Hull LLP ;Greene Jeff A. |
| 主权项 | 1. A method for controlling a hydraulic system having at least an implement pump, a fan-steering-braking (FSB) pump, a valve assembly, a fan drive system, a steering system, a braking system and one or more accumulators, the method comprising the steps of: determining an operational state of a power source associated with the hydraulic system; actuating one or more valves of the valve assembly such that the FSB pump charges the accumulators and operates at least the fan drive system, the steering system and the braking system if the power source is operating at less than maximum power; and actuating one or more valves of the valve assembly such that the accumulators operate at least the fan drive system, the steering system and the braking system and such that the FSB pump supplements the implement pump as needed if the power source is operating at maximum power. | ||
| 地址 | Peoria IL US | ||