In this master's thesis, we developed a system (or method) for determining the axial force and momentum on the pinion of the starter motor on the internal combustion engine in the first stage of engine start-up. Cranking of starter motor is producing wear between the starter motor and the engines flywheel. For this reason, we want to be able, to measure the size of the force and moment, when the pinion of starter motor hits the engines flywheel. We obtained the desired results with the development of the test station (or measuring device) for starter motors. With the measuring device, we experimentally measured the axial force and moment of the stepper. Obtained results on the measuring device are compared with the characteristic of the switches, in which we took into account mechanism influence on the force transfer to the pinion. The measuring device must exhibit adequate stiffness, one must be sufficiently sensitive to detect the smallest force and moment, and minimize the impact of the measurements procedure.
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