| 发明名称 | Hydraulic system of a transmission device with a lubrication circuit | ||
| 摘要 | A hydraulic system of a transmission device with a lubrication circuit, which is supplied with hydraulic fluid downstream of a cooling device for cooling and lubrication, is described. One part of the volume flow of hydraulic fluid led through the cooling device is able to be discharged downstream of the cooling device and upstream of the lubrication circuit in the direction of a hydraulic fluid reservoir. A valve device arranged downstream of the cooling device and upstream of the lubrication circuit is provided, which valve device is transferable into a first operating state and into a second operating state depending on the operating condition, whereas, in the first operating state of the valve device, a volume flow of hydraulic fluid supplied to the valve device is able to be discharged at least partially in the direction of the hydraulic fluid reservoir, while, in the second operating state of the valve device, a volume flow of hydraulic fluid supplied to the valve device is able to be supplied at least partially to a shifting element of the transmission device. | ||
| 申请公布号 | US9435422(B2) | 申请公布日期 | 2016.09.06 |
| 申请号 | US201414522802 | 申请日期 | 2014.10.24 |
| 申请人 | ZF Friedrichshafen AG | 发明人 | Herrmann Markus;Erath Robert |
| 分类号 | F16H57/04;F16H61/00 | 主分类号 | F16H57/04 |
| 代理机构 | Dority & Manning, P.A. | 代理人 | Dority & Manning, P.A. |
| 主权项 | 1. A hydraulic system in a transmission device, comprising: a lubrication circuit that is supplied with hydraulic fluid downstream of a cooling device, wherein at least part of the volume of flow of hydraulic fluid through the cooling device is discharged upstream of the lubrication circuit; a valve device arranged downstream of the cooling device and upstream of the lubrication circuit to receive the volume flow of hydraulic fluid discharged upstream of the lubrication circuit, the valve device transferable between a first operating state and a second operating state; in the first operating state of the valve device, a volume flow of hydraulic fluid supplied to the valve device from the cooling device is discharged to a hydraulic fluid reservoir; and in the second operating state of the valve device, a volume flow of hydraulic fluid supplied to the valve device from the cooling device is supplied at least partially to a shifting element in the transmission device. | ||
| 地址 | Friedrichshafen DE | ||