Abstract: A regulating device for an internal combustion engine, including a centrifugal governor, a linkage for determining initial tension of the governor spring and a restoring linkage, is constructed with a control track and movable element acting in cooperation to adjust the coefficient of fluctuation for the characteristic operating curves of the engine.

Abstract: A transmission linkage construction arranged between a governor and a fuel metering device of an internal combustion engine with the linkage construction selectively positioning a control rod of the fuel metering device in response to predetermined speeds of the internal combustion engine sensed by the governor. The control rod is positionable at a plurality of positions defined between a maximum fuel filling position and a zero fuel filling position. The transmission linkage construction includes a pivotally mounted transmission lever operatively connected with the governor and the control rod of the fuel metering device by way of connecting linkages with the connecting linkage between the control rod and transmission lever being effected by way of an arm fixedly secured to the transmission lever at an adjustable distance from the pivot point of the transmission lever.

Abstract: A hydraulic servo-motor for the control of an internal combustion engine which is equipped with a servo-piston, with a fuel quantity control mechanism and with a control slide valve member arranged coaxially to the servo-piston which itself is in operative connection with a centrifugal governor; a working medium under pressure is supplied by a pump driven directly or indirectly by the internal combustion engine; an auxiliary piston arranged coaxially to the servo-piston and to the control slide valve member is acted upon by the pressure of the working medium and permits in case of an existing pressure of the working medium, a stroke of the control slide valve member in one direction which is limited by the servo-piston and a stroke of the control piston in the other direction which is limited by the auxiliary piston; a spring supported at the servo-piston acts on the auxiliary piston opposite the pressure of the working medium and clamps together the control slide valve member and the servo-piston in case of