Method to calibrate a hydrostatic transmission with electronic controls

A control and regulation means for putting into operation a vehicle having an electronically controlled automotive hydrostatic transmission which comprises a variable displacement pump (2) driven by an internal combustion engine (1) having a servo system (9), a hydraulic motor (11), which is connected through working mains (A, B), and an electronic control (14), an output current of which controls at least one proportional pressure-reducing valve (7, 8) for controlling the servo system (9) acting on the variable displacement pump (2), and by means of this controls a pressure in the working mains (A, B), sensors (10, 18, 20) being provided for the determination of a speed of the internal combustion engine (1) and/or said hydraulic motor (11) and/or the determination of the pressure in the working mains (A, B), characterized in that

• a diagnosis device (17) is provided for setting-up of driving regime data in the electronic control (14);
• and
• the output current for the proportional pressure-reducing valve (7, 8) corresponding to values determined by said sensors (10, 18, 20) is controllable by means of the electronic control (14) such that by means of the driving regime data and said output current, a current characteristic reproducing driving properties is generable.