2011 BMW Activehybrid 7
The symbiosis of an upgraded twin-turbo, High Precision Direct Injection, V-8 engine with a 3-phase synchronous electric motor gives the BMW ActiveHybrid 7 a combined output of 455 hp and maximum torque of 515 lb-ft. Power is transmitted via an 8-speed automatic transmission with the electric motor positioned between the engine and the torque converter. This electric motor receives its supply of energy from a lithium-ion battery developed specifically for this automobile.
Precisely controlled interaction of both power sources serves to maximize the efficiency and dynamic performance of the BMW ActiveHybrid 7. The result is a unique driving experience that demonstrates the performance capabilities of modern hybrid technology. The BMW ActiveHybrid 7 accelerates to 60 mph in 4.7 seconds making it the quickest hybrid in the world. At the same time, it delivers fuel economy approximately 15-17% better than the 750i. Official EPA ratings will be available closer to the US market launch.
The technology also provides new features that promote efficiency while preserving comfort. As an example, the BMW ActiveHybrid 7 is the first BMW with automatic transmission to feature Auto Start Stop to maximize efficiency by avoiding engine idling when stopped. Another advantage is that the air conditioning and ventilation system remains fully operational when the vehicle is stopped and the engine is shut down. In this case, power is supplied directly through the 120-volt on-board network powered by the lithium-ion battery.
