Munich. The BMW X5 and the BMW X6 now also feature
highly efficient mild hybrid technology to optimise the spontaneous
power delivery and effectiveness of the drive system. As from May
2020, the new BMW X5 xDrive40d (combined
fuel consumption: 6.4 – 5.9 l/100 km; combined CO2 emissions:
167 – 154 g/km) and the new BMW X6 xDrive40d (combined fuel
consumption: 6.2 – 5.8 l/100 km; combined CO2 emissions:
164 – 153 g/km) will boast a newly developed straight six-cylinder
diesel engine with a 48-volt starter generator. Thanks to the power
output of the combustion engine being increased to 250 kW/340 hp, and
the electrically assisted mild hybrid system, the superior forward
thrust of the luxury-class Sports Activity Vehicle (SAV) and Sports
Activity Coupe (SAC) is experienced even more intensively.
Sporty and agile handling on the road as well as robust off-road
versatility are hallmarks of the driving characteristics of the BMW X5
and the BMW X6. With the strong presence of its powerful and elegant
design and a luxurious interior ambience also in the current model
generation, the two founders of each of their segments make an
impressive statement. Moreover, high-quality comfort features and
advanced technology in the areas of operation and digitalisation
contribute towards the driving pleasure experienced in the two BMW X
models. The latest innovations in the field of drive technology now
complement the engine portfolio of the SAV and the SAC with a diesel
engine combining pulling power and efficiency in a particularly
convincing manner.
Straight six-cylinder diesel engine with multi-stage
turbocharging and optimised direct fuel injection.
The BMW TwinPower Turbo Technology featured by the new 3-litre
straight six-cylinder power plant comprises a two-stage turbocharging
system and Common Rail piezo direct fuel injection. The spontaneous
response characteristics of the supercharging system are enhanced by
variable turbo geometry for the high and low pressure stages. With up
to 10 injections per cycle, the injectors feed fuel to the combustion
chamber at a pressure of up to 2,700 bar. The new pressure sensor
integrated into the injector ensures exceptionally precise dosing as
well as favourable fuel economy and clean combustion.
The new diesel engine develops a maximum torque of 700 Nm becoming
available between 1,750 and 2,250 rpm. The engine achieves a maximum
power output of 250 kW/340 hp at 4,400 rpm. Whether on the road or on
off-road terrain, power is transferred in the new BMW X5 xDrive40d and
the new BMW X6 xDrive40d via an 8-speed Steptronic transmission and
intelligent BMW xDrive four-wheel technology, which – thanks to a
rear-wheel accentuated set-up – enhances agility during dynamic cornering.
Two-stage NOX exhaust gas treatment, which was introduced as a
standard feature on diesel models in 2012, has been further developed.
This component, which is close to the engine, now comprises an
oxidation catalyst converter and an SCR coating on the particulate
filter. For optimum reduction of nitrogen oxide emissions a second
dosage unit has been integrated at the outlet of the SCR system.
Therefore, the new BMW X5 xDrive40d and the new BMW X6 xDrive40d now
already comply with the mandatory regulations of the Euro 6d emission
standard, which will not take effect until the beginning of 2021.
Mild hybrid technology: Additional electric output of
8 kW/11 hp increases sprinting power whilst reducing consumption.
The new diesel engine is assisted by the 48-volt starter
generator of the mild hybrid system. The additional electric output of
8 kW/11 hp promotes both spontaneous power delivery and effectiveness
of the drive system. Electric boost enhances dynamics when starting
and accelerating. Therefore, the new BMW X5 xDrive40d and the new
BMW X6 xDrive40d are each able to sprint from 0 to 100km/h in just 5.5
seconds. Thanks to the additional electric output,
the
combustion engine is able at constant speeds to run particularly
frequently within an efficiency-optimised load range, thus reducing
consumption peaks.
The starter generator obtains the necessary energy from the 48-volt
battery, which also supplies all electric driving functions with power
via the 12-volt vehicle electrical system. It is charged by means of
recuperation during acceleration and braking phases and also through a
targeted combustion engine load point increase. Ride comfort also
benefits significantly from the mild hybrid technology featured in the
new BMW X5 xDrive40d and the new BMW X6 xDrive40d. The supportive
effect of the 48-volt starter generator facilitates extremely fast and
comfortable load change responses. Moreover, the powerful generator
provides for spontaneous and low-vibration starting and re-starting of
the combustion engine when using the Auto Start Stop and “sailing”
functions. As a result, it is also possible to not only disconnect the
engine during the sailing phases, but also to switch it off entirely.
In order to make use of the economising effect as frequently as
possible, the comfort-optimised sailing function is now no longer only
available in the ECO-PRO mode, but also in the COMFORT mode of the
Driving Experience Control feature.