Method and Control Unit for Checking an Adjustment of a Length of an Intake Manifold in an Internal Combustion Engine

摘要

A method checks the adjustment of the length or volume of an intake manifold in an internal combustion engine which, when there is a functionally capable adjustment of the length of the intake manifold, is operated with a first, comparatively large intake manifold length when there is a first, comparatively low rotational speed, and is operated with a second, comparatively small intake manifold length when there is a second, comparatively high rotational speed. In the method, a measure is formed for an actual value of the power or of the torque of the internal combustion engine from operating parameters which are sensed for controlling the internal combustion engine during its operation. The measure is compared with a predetermined setpoint value, and the check is carried out in dependence on the result of the comparison. In addition, a control unit is configured to carry out the method.