BMW ActiveHybrid.

By implementing BMW EfficientDynamics technologies, combustion engines are more economical today than they have ever been. However, BMW ActiveHybrid technology goes one step further and unites a combustion engine with an electric drive for even lower emissions while maintaining the typical BMW driving dynamics.

The BMW ActiveHybrid 7, for example, is more efficient than a BMW 7 Series without Hybrid technology, but more powerful than all other Hybrids of its class. It shows that the combination of electric and combustion engines is suitable for everyday use and doesn’t mean having to compromise on comfort.

In the BMW X6 ActiveHybrid, the two-mode active transmission developed by the Global Hybrid Corporation links the combustion engine with two high-performance electric motors. Planetary gear sets variably split the power between the different units. The system switches between two operating modes according to need: one is used for starting from standstill with high torque and low speed, the other for faster travelling speeds.

This ensures that power is optimally exploited depending on the particular driving situation. Fixed-ratio gears within the two operating modes furnish additional benefits, boosting efficiency and driving dynamics across the entire speed range. Here the two electric motors can be used both during acceleration and for the recovery of brake energy. This energy, which is subsequently on tap to drive the vehicle, is provided practically free of charge. Thus the BMW Concept X6 ActiveHybrid always has the best of both worlds: it can be driven either in full electric mode, solely on power from the combustion engine, or in a combination of both drive sources. The only surprise is the fuel consumption and emission figures – which shave off up to 20 percent compared to a similar vehicle with conventional drive.

The BMW Concept 5 Series ActiveHybrid seeks to apply BMW ActiveHybrid technology to satisfy the requirements of a dynamic midrange sedan. Anticipatory energy management is one focus of this concept. This involves analysing the data about the length of the route and the topography (downward or upward slope, planes). The vehicle then selects the most efficient mode for that terrain.