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5/2009
Page 35
directly in the V-section between the two rows of cylinders, each supplying four
cylinders with compressed air, guarantees unparalleled spontaneity in taking up
the driver’s commands on the gas pedal. The “turbo gap” so typical of conven-
tional turbocharged engines – the time elapsing until the turbocharger starts to
develop its power boost – is simply not there any more.
A further significant point is that the engine revs up full of power and muscle,
maintaining its very high torque consistently throughout an unusually broad
range of engine speed. In its performance characteristics it therefore resembles
a significantly larger normal-aspiration engine while at the same time it is much
lighter, also thanks to its all-aluminium crankcase.
Not just the weight, but also the fuel consumption of this new V8 remains at a
level unusually low for an engine of this class. A significant factor contributing to
superior fuel economy is infinite double-VANOS camshaft adjustment so typical
of a BMW engine, also enabling the V8 to deliver an exceptionally high level of
torque right from the start at low engine speeds.
A further key function in providing maximum fuel efficiency is High Precision
Injection. This second generation of direct gasoline injection incorporates
piezo-injectors positioned in the cylinder head directly next to the spark plug
and delivering fuel into the combustion chambers at a pressure of up to 200 bar.
Like on the new six-cylinder, this technical principle ensures precise dosage
in the supply of fuel, helping to give the BMW 550i Gran Turismo average
fuel consumption in the EU test cycle of 11.2 litres/100 kilometres (equal to
25.2
mpg imp) and limit CO2 emissions to 263 grams per kilometre. Again,
this fulfils both the US ULEV II emission standard and the EU5 classification in
Europe.
Ultra-modern diesel power: straight-six with aluminium crankcase
and high-pressure fuel injection through piezo-injectors.
The straight-six diesel featured in the BMW 530d Gran Turismo again repre-
sents the state of the art in BMW engine development. Indeed, this 3.0-litre
diesel gives BMW even greater worldwide leadership in the development of
diesel engine technology, coming complete with an all-aluminium crankcase.
The significantly upgraded turbocharger system with variable intake geometry
ensures a dynamic and, at the same time, harmonious flow of power under
all conditions. The supply of fuel, finally, is provided by the latest generation of
common-rail direct injection.
| Categories | BMW 5-Series Manuals, BMW Manuals |
|---|---|
| Tags | BMW 530d, BMW 535i, BMW 550i, BMW F07, BMW Gran Turismo, Brochure and Catalogue |
| Model Year | 2010 |
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| Document File Type | |
| Copyright | Attribution Non-commercial |
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