Method for verifying adjusting device for variable adjustment of compression ratio of e.g. diesel engine of passenger car, involves determining state of adjusting device, and verifying device if engine is in unused operating mode

摘要

The method involves determining a state of an adjusting device, and verifying the adjusting device if an internal combustion engine is in an unused operating mode. The adjusting device is verified when the internal combustion engine is in a non-driven mode and travel velocity of a motor vehicle is smaller than a predeterminable threshold level. The adjusting device is verified if the motor vehicle is in a standstill position. An adjustable shaft is supported at a housing portion of the internal combustion engine over a bearing.