| 发明名称 | Automated transmission and method for operating an automated transmission | ||
| 摘要 | An automated transmission comprises a hydraulic control device and one or more hydraulically actuated gear units. The hydraulic control device comprises a control unit for setting actuating pressures on the gear units; a base pressure control valve for adjusting a hydraulic base pressure of the hydraulic control device; and a device for controlling the base pressure control valve dependent on the actuating pressures. The automated transmission further comprises a device for switching through an actuating hydraulic pressure to the base pressure control valve. A method comprises the method steps of adjusting a hydraulic base pressure at the hydraulic control device; adjusting actuating pressures for actuating one or more transmission units; switching through one of the actuating pressures to the base pressure control valve; and adjusting the hydraulic base pressure by one of the actuating pressures. | ||
| 申请公布号 | US9068648(B2) | 申请公布日期 | 2015.06.30 |
| 申请号 | US201013378315 | 申请日期 | 2010.06.28 |
| 申请人 | Getrag Ford Transmissions GmbH | 发明人 | Moehlmann Reinhard |
| 分类号 | F16H3/08;F16H61/00;F16H61/02;F16H61/688 | 主分类号 | F16H3/08 |
| 代理机构 | Schlee IP International, P.C. | 代理人 | Schlee IP International, P.C. ;Schlee Alexander R. |
| 主权项 | 1. An automated transmission comprising; a hydraulic control device; one or more hydraulically actuated gear units; and at least one pressure control valve connected to an output-side hydraulic line providing an actuating pressure to the one or more hydraulically actuated gear units; wherein the hydraulic control device comprises: a control unit for setting actuating pressures on the gear units;a base pressure control valve for adjusting a hydraulic base pressure of the hydraulic control device; anda base pressure control device designed to control the base pressure control valve dependent on the actuating pressures; wherein the automated transmission further comprises a device hydraulically connecting the base pressure control valve directly to the output-side hydraulic line such that the highest temporarily required actuating pressure can at any time directly act on the base pressure control valve; and the base pressure control device is configured to reduce the base pressure at least temporarily and therefore reduce the actuating pressure. | ||
| 地址 | Cologne DE | ||