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11/2009
Page 19
of a BMW diesel are ensured by an all-aluminium crankcase, the enhanced
turbocharger system with variable turbine geometry, and the latest generation
of common-rail fuel injection. Fuel is supplied by means of upgraded piezo-
injectors now operating at a maximum pressure of 1,800 bar.
The injectors positioned right in the middle and the valves in vertical
arrangement ensure a smooth and consistent combustion process, serving
to reduce emissions from the engine right from the start.
This superior six-cylinder diesel develops maximum output of 180 kW/245 hp
at an engine speed of 4,000 rpm, with peak torque of 540 Nm/398 lb-ft
from 1,750 to 3,000 rpm. This kind of power accelerates the new BMW 530d
to 100 km/h in 6.3 seconds and gives the car a top speed of 250 km/h
or 155 mph. Average fuel consumption in the EU test cycle, in turn, is
6.3 litres/100 kilometres (equal to 44.8 mpg imp), with CO
2
emissions of
166 grams per kilometre.
In standard trim the new BMW 530d – just like all other versions of the
new BMW 5 Series Sedan – fulfils the EU5 emission standard. Equipped
with optional BMW BluePerformance technology available also on this model
in conjunction with automatic transmission, the new BMW 530d offers even
better emission management from the diesel engine. In this case the diesel
particulates filter and the oxidation catalyst housed in the same unit interact
with an NO
X
storage catalyst for further reduction of nitric oxides in the
exhaust gas.
This high-tech exhaust gas management in the new BMW 530d already fulfils
the requirements of the EU6 standard not coming into force until 2014.
And like the diesel particulates filter, the NO
X
storage catalyst does not require
any maintenance or additional operating media throughout the entire service
life of the car. The new BMW 525d is likewise powered by a 3.0-litre straight-
six of the latest generation. In this model the all-aluminium diesel develops
maximum output of 150 kW/204 hp at 4,000 rpm, while maximum torque
increased to 450 Newton-metres/332 lb-ft is maintained consistently
between 1,750 and 2,500 rpm.
With this kind of power and muscle, the engine accelerates the new
BMW 525d from zero to 100 km/h in 7.2 seconds and gives the car a
top speed of 236 km/h or 146 mph. Average fuel consumption in the EU
test cycle of 6.2 litres/100 kilometres, equal to 45.6 mpg imp, and a CO
2
emission rating of 162 grams per kilometre, set a new benchmark for
efficiency in a six-cylinder diesel.