Method for actively dampening a start-up resonance of a torsional damper when starting an internal combustion engine

A powertrain comprising:

• an internal combustion engine;
• a torsional damper fixed between the internal combustion engine and a secondary side of a torsional elasticity;
• and
• a starter coupled to the engine via a belt;
• wherein
• a counter excitation is applied to a torque generated by the starter while the internal combustion engine is being started, which counter excitation is modulated based on a crankshaft angle of the internal combustion engine.

A powertrain comprising:

• an internal combustion engine;
• a torsional damper fixed between the internal combustion engine and a secondary side of a torsional elasticity;
• and
• a starter coupled to the engine via a belt;
• wherein
• a counter excitation is applied to a torque generated by the starter while the internal combustion engine is being started, which counter excitation is modulated based on a parameter of the internal combustion engine which changes when the internal combustion engine is being started.