Bmw 5 Bedienungsanleitung PDF herunterladen (Seite 21)

BMW

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11/2009

Page 21

The new BMW 530d and the BMW 528i and BMW 523i likewise come

with new versions of the six-speed manual gearbox optimised for efficiency

with conventional oil supply. The gearshift lever re-designed on all models

and the shift bars again upgraded in their standard allow a smooth gearshift

with optimum precision and steady shift forces, bringing out the sporting

quality of the manual gearshift so typical of BMW to an even greater extent

than before.

Significant innovation with unique efficiency:

eight-speed automatic transmission.

The BMW 550i comes as standard with the new eight-speed automatic

transmission featured for the first time in the BMW 760i twelve-cylinder

Luxury Performance Sedan, which is also available as an option for all other

variants of the new BMW 5 Series Sedan. When fitted, this makes the new

BMW 520d the first car in the world to combine a four-cylinder power unit

with an eight-speed automatic transmission.

This innovative transmission offers a unique combination of gearshift comfort,

sportiness and efficiency at a standard never seen before, far superior in every

respect to the automatic transmissions and double-clutch gearboxes from the

competition.

As yet a further option the new BMW 5 Series Sedan is also available

with a Sport Automatic variant of the eight-speed transmission allowing

manual selection of gears by means of shift paddles on the steering wheel.

The control logic applied in this case follows the principle already featured

on BMW M Cars, the driver shifting up on the right and down on the left

paddle. A further feature of the Sport Automatic is the special design of

the electronic gearshift lever on the centre console.

The eight-speed automatic transmission boasts a particularly innovative

gearset configuration, four single gearsets and five shift units interacting

to provide the eight forward gears and one reverse gear. The arrangement

of these components to be seen here worldwide for the first time on an

eight-speed automatic transmission ensures that only two of five clutches

are moved along open in each gear, significantly reducing drag losses in

comparison with the automatic transmissions currently in the market.

With the number of gears being increased to eight, gear increments when

shifting are smaller than before despite the greater range between the

lowest and highest transmission ratio. While accelerating, the harmonious

shift in transmission ratios ensures a particularly smooth and steady increase

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Bmw 5 Bedienungsanleitung Seite 21