BMW ActiveHybrid 5 with intelligent energy management mix

Feb 8, 2012, 3:06 GMT

Munich - BMW takes the development of intelligent hybrid drive systems to the next level with the introduction of the BMW ActiveHybrid 5 with a combined output of 250 kW/340 hp and a car that can be driven on electric power alone for up to 60 km/h.

Average fuel consumption is cut down to between 6.4 and 7 litres per 100 kilometres which translates to a carbon dioxide emission figure of between 149-163 grammes per kilometres.

The 225 kW/306 hp six-cylinder in-line engine comes from the BMW 535i. The electric motor, meanwhile, develops 40 kW/55 hp, getting its power from a lithium-ion battery integrated into the luggage area. Power from the two drive systems is transferred to the rear wheels by the eight-speed automatic gearbox.

An intelligent energy management of the power electronics uses a host of functions to ensure the drive system runs efficiently. Charging of the high-performance battery primarily takes place during coasting or braking, with the electric motor performing the role of a generator feeding energy into the high-voltage battery.

Under acceleration, the electric motor takes on a boost function. Here, it assists the petrol engine by generating an ultra-dynamic burst of power, lending the sedan's sporty driving experience a sharper edge.

While coasting at speeds of up to 160 km/h in ECO PRO mode, the combustion engine can be switched off and fully decoupled.

The ActiveHybrid 5 is the only model in the BMW 5 Series line-up available in the exterior paint shade Bluewater metallic to make it stand out visually from the other 5 Series variants.