| 摘要 |
Two variants are disclosed of a method for starting up, in particular from a standstill, a vehicle which has a vehicle drive with an internal combustion engine for driving a first wheel or a first axle and a hydrostatic additional drive for driving a second wheel or a second axle. The hydrostatic additional drive has an adjustable hydraulic pump which is driven by the internal combustion engine, and at least one hydraulic motor which is coupled hydraulically thereto. The first variant of the method according to the invention has the following steps: - in particular, first of all increasing and - regulating of a supply pressure of the at least one hydraulic motor in dependence on an accelerator pedal; - determining of a rotational speed, which is not equal to zero, of the first wheel or the first axle - in particular at the rear -; and - synchronizing of a rotational speed of the second wheel or the second axle - in particular at the front - with the determined rotational speed of the first wheel or the first axle. A second variant of the method according to the invention relates to the same above-described vehicle and has the following steps: - in particular, first of all increasing and - regulating of a supply pressure of the at least one hydraulic motor in dependence on an accelerator pedal; - determining of a speed of the vehicle which is not equal to zero; and - adapting of a rotational speed of the second wheel or the second axle - in particular at the front - to the determined speed. The corresponding vehicle is disclosed, furthermore, which has a vehicle drive with an internal combustion engine for driving a first wheel or a first axle and a hydrostatic additional drive for driving a second wheel or a second axle. The hydrostatic additional drive has an adjustable hydraulic pump which is driven by the internal combustion engine, and a hydraulic motor which is coupled hydraulically thereto. A supply pressure of the hydraulic pump can be regulated in dependence on an accelerator pedal and, furthermore, in dependence on a rotational-speed sensor system or speed sensor system which is arranged on the first wheel or on the first axle - in particular at the rear. |
