Method for transmitting and dampening torques

A method for transmission and damping of a mean torque (Mm) with a superposed alternating torque (Mw) in a torque transmission arrangement for a powertrain of a motor vehicle having an input area and an output area, the method comprising:

• transmitting the mean torque (Mm) with the superposed alternating torque (Mw) along a torque path (M) from the input area to the output area;
• rotating the input area of the torque transmission arrangement at an input speed (ne) around a rotational axis (A);
• rotating the output area of the torque transmission arrangement at an output speed (na) around a rotational axis (B);
• wherein at least the input speed (ne) is composed of a mean speed (nem) and a superposed alternating component (newp), and an alternating component (new) is defined by a superposition of periodic speed oscillations (newp_i) whose frequencies (f) have a substantially whole number ratio (i) with a firing frequency (Zf);
• wherein each of these periodic oscillations (newp_i) has a minimum (newp_i_Min) and a maximum (newp_i_Max);
• providing a slip arrangement in the torque path (M) between the input area and the output area that transmits the mean torque (Mm) with the superposed alternating torque (Mw) and is configured to generate a speed slip (ns) between the input speed (ne) and the output speed (na) in the torque path (M),
• providing, by the slip arrangement, a maximum of an external activation of the speed slip (ns) in an area of the maxima (newp_i_Max) of at least one periodic oscillation component (newp_i) of the superposed alternating component (newp);
• and
• providing, by the slip arrangement, a minimum of the external activation of the speed slip (ns) in an area of the minima (newp_i_Min) of the at least one periodic oscillation component (newp_i) of the superposed alternating component (newp).