Robert Boschgmbh

Darsten Hummel

Reinhard Schwartz

Werner Bruhmann

A centrifugal rpm governor for internal combustion engines in which the initial stressing of an adaptation spring is adjustable in a continuously variable manner in the installed state and without changing the spring stroke (b) determining the adaptation path. The governor includes an adaptation device disposed in the force transmitting path between a control member which adjusts in accordance with rpm and a force transmitting member subject to the force of the governor spring, which adaptation device includes in a recessed longitudinal bore, a stop bolt and an adaptation spring supported at one end by a ring screwed onto a threaded portion of the stop bolt, the ring being guided for axial displacement and provided with rotational securing means in the longitudinal bore so that by rotating the stop bolt a variation of the initial stressing of the adaptation spring in a continuously variable manner is possible without affecting the preset spring stroke (b).

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Wendlingen, Germany

Darsten Hummel