BMW SERIE 3 Servisní příručka stáhnout pdf (Strana 13)

Valvetronic

Instead of using a traditional throttle, Valvetronic technology in

the i/i xDrive and TwinPower Turbo i/i xDrive lets the

engine breathe more easily by varying the lift height of the valves

to regulate air intake. The result: improved cold starts, smoother

running, and a significant drop in fuel consumption. Using revo-

lutionary tech nology such as this, BMW has improved its overall

average fuel economy more than any other manufacturer.

Double-VANOS

VANOS is BMW’s valve timing system that can “steplessly”

vary the points in the combustion cycle when valves open and

close. Double-VANOS refers to the fact that it operates on

both the intake and exhaust camshafts. Electronically controlled

in response to engine speed, load and temperature, VANOS

reduces emissions, and enhances low- to medium-speed

torque, as well as fuel efficiency. (Not available in d.)

Aerodyna mi cs

The more smoothly that air flows over a vehicle,

the more efficiently it can operate. All BMWs are

designed for a low coefficient of aerodynamic

drag, which translates into quicker acceleration,

more stable handling, quieter operation and greater

fuel efficiency. A BMW’s integrated front spoilers

reduce the amount of air flowing underneath,

minimizing front-end lift. This allows a BMW to hug

the road at higher speeds for excellent stability.

Efficient transmissions

The  Series Sedans channel their

power through one of two -speed

transmissions: a smooth-shifting manual,

and an equally fuel-efficient STEPTRONIC

automatic. Refinements to the automatic

transmission include a torque converter

that slips less; quicker shifting; and finer

adaptation to driving style and conditions.

(d: STEPTRONIC automatic transmis-

sion only.)

THIS IS HOW MUCH HAS GONE IN.

Lightweight construction

Our engineers use lightweight aluminum

throughout our vehicles – in the front section,

for example, or for the suspension. BMW’s

inline six-cylinder TwinPower Turbo engine is

all aluminum; the naturally aspirated inline six

is an aluminum/magnesium composite – the

lightest in its class. Taken together, these

weight savings lead to lower fuel consump-

tion and better axle load distribution for more

agility – especially in curves.

TwinPower Turbocharged engines

Benefiting from BMW’s new TwinPower

Turbo with Valvetronic technology, the

i and i xDrive Sedans deliver quick

acceleration while virtually eliminating turbo

lag. Fuel economy is strong, as well, thanks

to High Precision piezo direct fuel injection.

Advanced Diesel with BluePerformance

In addition to the massive power of its

TwinPower Turbo engine, the d Sedan

benefits from the extraordinary efficiency

of BMW’s Advanced Diesel. Thanks to its

BluePerformance technology, it also meets

the emissions standards of all  states.

At BMW, we create dynamic vehicles that thrill you with quick acceleration, predictable handling and unshakable control. We are also busy

ﬁ nding innovative fuels and technologies that help preserve the environment while delivering legendary performance. This is what we refer

to as “Efﬁ cientDynamics.” This goal led to the visionary CleanEnergy hydrogen-powered engine in the BMW Hydrogen  Sedan. In ,

BMW introduced Advanced Diesel with BluePerformance in the U.S., offering diesel power with quick acceleration, increased fuel efﬁ ciency

and reduced emissions. And now, BMW’s ActiveHybrid X and ActiveHybrid  vehicles combine combustion and electric power to boost

performance while simultaneously reducing fuel consumption and CO



emissions. At BMW, we are driven to do much more with less.

BMW EfficientDynamics | 2524

AND THIS IS WHAT COMES OUT.

BMW models have low CO



emissions today.

But that’s just for starters. We’re

carrying on

our research

in the quest to bring you greater

driving pleasure, with fewer emissions and

decreased fuel consumption.

BMW Efﬁ cientDynamics

Less emissions. More driving pleasure.

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