The BMW ActiveHybrid 5 Tokyo Motor Show 2011
BMW has developed its intelligent hybrid drive technology to the next level with a further ActiveHybrid production model. Again, a petrol engine is combined with an electric motor to enhance both efficiency and the brand’s hallmark driving pleasure.
The BMW ActiveHybrid 5 is the company’s first model to combine a BMW TwinPower Turbo six-cylinder in-line engine, an electric motor and an eight-speed automatic transmission.
The latest-generation BMW ActiveHybrid technology also adds precisely controlled – and therefore extremely efficient – energy management to the mix. All of which means that for a car in the premium executive class, the BMW ActiveHybrid 5 offers an exceptionally good balance between performance and fuel consumption.
The drive system delivers combined power of 250 kW/340 hp, allows all-electric operation up to a speed of 60 km/h (37 mph), accelerates the BMW ActiveHybrid 5 from 0 to 100 km/h (62 mph) in 5.9 seconds and limits average fuel consumption to between 6.4 and 7.0 litres per 100 km (44 – 40 mpg imp) and CO2 emissions to between 149 and 163 g/km (figures as per EU test cycle, may vary depending on tyre format).
The 225 kW/306 hp six-in-line engine with BMW TwinPower Turbo technology in the BMW ActiveHybrid 5 is the same unit renowned for its fast-revving performance, torque and efficiency in the BMW 535i.
The 40 kW/55 hp electric motor is powered by a lithium-ion high-voltage battery housed in the boot. The power from both drive units is transferred to the rear wheels via an eight-speed automatic transmission.
The BMW ActiveHybrid 5 is a full hybrid, that is to say it can operate in all-electric mode, for zero-emission driving around town. At the same time it offers the sportiest performance in its class – but with a double-digit percentage improvement in fuel consumption over the BMW 535i.
To exploit the full potential of BMW ActiveHybrid technology, the power electronics incorporate intelligent energy management, with a host of innovative functions designed to ensure efficient powertrain operation.
During braking and on overrun, the high-voltage battery is charged by the electric motor, which acts as a generator.
When the vehicle is accelerating, on the other hand, the electric motor provides a boost function, supplementing the petrol engine to provide dynamic performance which adds noticeably to the sedan’s sporty driving experience. In ECO PRO mode, it is possible to switch the petrol engine off on overrun and disconnect it from the drive shaft, at any speed up to 160 km/h (100 mph).
This coasting mode combines smoothness
Intelligence breeds efficiency: The BMW ActiveHybrid 5.
and comfort with optimal utilisation of the vehicle’s kinetic energy. To prevent wasteful idling when the vehicle is stopped at intersections or in stationary traffic, the BMW ActiveHybrid 5 is equipped with a hybrid start-stop function.
Plus, the power electronics are linked up to the BMW ActiveHybrid 5’s standard-fitted Professional navigation system. This allows them to anticipate changing driving conditions and therefore to ensure that the powertrain always operates at maximum efficiency (effectiveness may vary depending on the quality of the navigation data).
All the hybrid-specific powertrain and energy management components were developed specially for the BMW ActiveHybrid 5. The result is an extremely well-integrated overall system which convincingly showcases the benefits of BMW ActiveHybrid technology out on the road. Needless to say, all the new hybrid components are designed to last the life of the vehicle.
The BMW ActiveHybrid 5 features the BMW 5 Series Sedan’s sporty and elegant body design but with various additional touches which draw attention to its special drive technology. Among the visible identifiers are the “ActiveHybrid 5” inscription on the C-pillars, the BMW kidney grille with galvanised slats, matt chrome tailpipes and, optionally, 18-inch Streamline-design alloy wheels which offer excellent aerodynamic efficiency. Also, the BMW ActiveHybrid 5 is the only model in the BMW 5 Series offered with Bluewater metallic exterior paintwork.
Doorsill finishers with the “Active Hybrid 5” insignia, an aluminium badge with the same ID on the centre console, a model-specific engine cover and the “ActiveHybrid Power Unit” inscription on the battery housing are further features that prevent confusion with any of the other model versions.
The ActiveHybrid 5 comes with the same choice of interior colours, seat upholstery and interior trim as the other BMW 5 Series Sedan versions. Additional standard-fitted luxury features include the Professional navigation system, 4-zone automatic climate control and stationary air conditioning
Visitors to the Tokyo Motor Show will be able to see the Active Hybrid 5 at the Tokyo Motor Show.