Diagnostic apparatus and method of diagnosis in the case of exhaust-gas turbochargers in the operation of the internal combustion engine

摘要

A method for determining whether a turbocharger (10) is intact or is subject to error, with the steps of:a) are shown in fig. 1a, a storage device in which the vibrations of a turbocharger housing for one or more rotational speeds of an intact turbocharger are stored,b) determining the vibration of the turbocharger housing,c) determining the rotational speed of the turbocharger (10),d) comparing the vibration of the turbocharger housing at the corresponding rotational speed of the turbocharger with a vibration of the intact turbocharger in the case of this rotational speed or a rotational speed, the the rotational speed of the turbocharger (10) at the next, and determining that the turbocharger (10) is subject to error, when the vibration of the turbocharger housing, in this case, the vibration of the turbocharger housing of the intact turbocharger exceed.