METHOD FOR MOUNTING AND SETTING AN ACTUATOR OF AN EXHAUST GAS TURBOCHARGER, AND AN ACTUATOR INTENDED FOR A CHARGING DEVICE

摘要

A method for mounting and setting an actuator of an exhaust gas turbocharger and a suitable electric actuating device are provided. The actuating device has an axially movable actuating rod which is connected to a coupling element which for its part is connected via a pivot pin to an actuation section of a bypass valve, the actuation section being configured as a lever arm. In order to set the desired closed position of the bypass valve during a predefined actuation of the actuating device, the coupling element is first connected to the actuating rod while still being displaceable. Before the fixing, the position of the actuating device which corresponds to the closed position is set by application of the corresponding voltage to the electric actuating device. Subsequently, a prestressing force is applied to the coupling element coaxially with respect to the actuating rod via a pneumatic actuator.

主权项

1. A method for mounting and/or setting an actuator of an exhaust gas turbocharger, the actuator having, in a kinematic coupling, an actuating device which serves to actuate a bypass valve and has an axially movable actuating rod which is connected, through the use of a coupling element, to an actuation section of the bypass valve, the method comprises first determining an optimum position of the coupling element with respect to the actuating rod in dependence of a position of the bypass valve and the actuating device and subsequently fixing the optimum position by first adjustably connecting the actuation section and the actuating rod through the use of the coupling element, by subsequently moving the actuating device into a position which corresponds to its closed position, and by finally, through the use of a tool, introducing into the actuator, in a predefined relative position, a force which immobilizes the bypass valve in its closed position and by immobilizing the relative position set in this way between the actuation section and the actuating rod.