METHOD AND DEVICE FOR DETECTING A RUNNING INTERNAL COMBUSTION ENGINE IN A HYBRID VEHICLE

摘要

In a method for detecting a running internal combustion engine in a hybrid vehicle, the internal combustion engine, as a first drive unit, and a second drive unit contribute toward driving the hybrid vehicle. To determine reliably whether the internal combustion engine is running during hybrid operation, an interference signal is actively introduced into the ongoing operating sequence of the internal combustion engine, and the response of the internal combustion engine to this interference signal is evaluated. If there is no response of the internal combustion engine, it is concluded that the internal combustion engine is not operating.