| 摘要 |
In a pneumatically sprung vehicle (1) with a front steering axle (A), one rear drive axle (TA) and one trailing axle (SA), traction is controlled by an air suspension system (36), having a “pressure ratio control” mode maintaining a parametrised ratio of air pressures in supporting bellows (2, 4) of the drive axle (TA) compared to air pressures in supporting bellows (3, 5) of the trailing axle (SA); a “relieve loading of trailing axle” mode checking whether relieving of the loading of the trailing axle (SA) is possible without overloading the drive axle (TA); and an “optimum traction” control mode increasing the pressure in the supporting bellows (2, 4) of the drive axle (TA) and reducing the pressure in the supporting bellows (3, 5) of the trailing axle (SA) without exceeding the maximum permissible axle load of the drive axle (TA) while maintaining residual pressure of the trailing axle (SA). |
| 主权项 |
1. A method for traction regulation in a vehicle (1) with pneumatic suspension, which vehicle has at least one front steering axle (A), at least one rear drive axle (TA), and a trailing axle (SA) in front of or behind the drive axle (TA), by way of an electronic or regulated air suspension system (36), the method comprising the following steps:
proceeding from a regulation mode “pressure ratio regulation”, in which a parameterized ratio of air pressures in supporting bellows (2, 4) of the at least one drive axle (TA) in relation to air pressures in supporting bellows (3, 5) of the trailing axle (SA) is maintained, switching to a regulation mode “relieve trailing axle of load”, checking whether relieving the trailing axle (SA) of load is possible without thereby overloading the drive axle (TA), upon determining that relieving the trailing axle (SA) of load without thereby overloading the drive axle (TA) is possible, automatically switching to a regulation mode “optimum traction”, in which the pressure in the supporting bellows (2, 4) of the at least one drive axle (TA) is increased and the pressure in the supporting bellows (3, 5) of the trailing axle (SA) is decreased in order to thereby effect a load shift to the at least one drive axle (TA) by relieving the trailing axle (SA) of load, without exceeding a maximum admissible axle load of the at least one drive axle (TA), and relieving the trailing axle (SA) of load to a point of residual pressure maintenance, and thereby shifting load to the drive axle (TA) up to the maximum admissible axle load thereof, switching back to the regulation mode “pressure ratio regulation”, with simultaneous increase of load on the trailing axle (SA) and relief of the drive axle (TA) of load, after a vehicle driver outputs a signal for increasing load on the trailing axle (SA) again. |
