Patent ID: 6915783
Filing Date: 2005-07-12
Classification: F02D,F02P,Y02T

Abstract:
1. A method for damping mechanical vibrations in a drive train of an internal combustion engine, comprising detecting vibration excitations in the drive train by determining a rotational speed variation of the drive train and by determining a throttle valve position or a change in the throttle valve position of the internal combustion engine flexibly and as a function of the vibration excitation wherein an ignition angle size is varied as a function of the throttle valve position, or a change in the throttle valve position, further comprising determining an operating state of the internal combustion engine by detecting variables selected from the group consisting of rotational speed, rotational speed change, rotational speed difference, throttle valve position, standardized charge, change in the throttle valve position, change in the standardized charge, mass air flow, the intake air temperature, coolant temperature, vehicle speed and/or the transmission ratio; and further adjusting the ignition angle in a flexible way as a function of at least one of these variables.