| 发明名称 | Automatic parking brake with optimized re-tensioning method | ||
| 摘要 | A method for re-tensioning an automatic parking brake by an electric motor includes carrying out a re-tensioning process after a predefined time period after the tensioning of the parking brake. The parking brake is driven in the tensioning direction by the electric motor to determine the travel carried out by the parking brake in the tensioning direction and the clamping force exerted by the parking brake during the re-tensioning. The method further includes carrying out a further re-tensioning process after a predefined time if the travel of the parking brake is less than a predefined threshold value and the clamping force in the parking brake is less than a second threshold value. If the travel of the parking brake is greater than a third threshold value or the clamping force exerted by the parking brake is greater than a fourth threshold value, a further re-tensioning process is not carried out. | ||
| 申请公布号 | US8930110(B2) | 申请公布日期 | 2015.01.06 |
| 申请号 | US201414165742 | 申请日期 | 2014.01.28 |
| 申请人 | Robert Bosch GmbH | 发明人 | Baehrle-Miller Frank;Blattert Dieter |
| 分类号 | G06F7/70;B60T11/04;B60T13/74 | 主分类号 | G06F7/70 |
| 代理机构 | Maginot, Moore & Beck LLP | 代理人 | Maginot, Moore & Beck LLP |
| 主权项 | 1. A method for re-tensioning an automatic parking brake by an electric motor, comprising: starting a re-tensioning process at a predefined time after the tensioning of the parking brake, the electric motor being configured to drive a parking brake mechanism in the tensioning direction; determining the travel carried out by the parking brake mechanism in the tensioning direction and the clamping force exerted by the parking brake during the re-tensioning; and not carrying out a further re-tensioning process if the travel carried out by the parking brake mechanism during the re-tensioning is greater than a first threshold value or the clamping force exerted by the parking brake in an initial phase of the re-tensioning process is greater than a second threshold value, or carrying out a further re-tensioning process after a predefined time if the travel carried out by the parking brake mechanism during the re-tensioning is less than a third threshold value and the initial clamping force of the parking brake is less than a fourth threshold value. | ||
| 地址 | Stuttgart DE | ||