Hybrid vehicle operating method, involves extending characteristic range of internal-combustion engine by hybrid drive, where characteristic range is assigned to consumption-favorable operating mode

摘要

The method involves extending a characteristic range (21) of an internal-combustion engine by a hybrid drive, where the characteristic range is assigned to a consumption-favorable operating mode of the internal-combustion engine and is assigned to a small valve stroke. The characteristic range is extended into a characteristic range (22) that is assigned to a large valve stroke, where the internal-combustion engine exhibits high efficiency in the latter characteristic range. The geometrical compression ratio of the internal-combustion engine is increased.