BMW 3 SERIES CONVERTIBLE - CATALOGUE Bedienungsanleitung PDF herunterladen (Seite 8)

This has gone in.

High Precision Injection

In this cutting-edge generation of petrol direct

injection, the Piezo injectors are positioned

very close to the spark plugs. They inject

the fuel at high pressure and with extreme

precision. The injectors’ central positioning

means only part of the combustion chamber

needs to be filled with an ignitable petrol-

air mixture. This enables efficient, “lean”

engine operation, especially in the heavily

used part-throttle range.

Auto Start/Stop function

BMW four-cylinder engines with 6-speed

manual transmission automatically shut down

when the vehicle is stationary, for example at a

red light or in a jam, when the driver activates

the clutch and switches to neutral. The engine

restarts as soon as the clutch is activated

again. This innovation signiﬁ cantly reduces

fuel consumption, especially in city trafﬁ c.

Brake Energy Regeneration

To supply a battery with electrical energy, the

generator (alternator) is permanently driven

using engine power, imposing a constant

overhead on the car’s fuel consumption. Brake

Energy Regeneration means the generator

usually only generates electricity when the

driver either takes the foot off the accelerator

or brakes – previously unused kinetic energy

is transformed in coasting mode into electrical

energy before being fed into the battery. In this

way, electricity is generated while coasting,

without consuming fuel.

Individual BMW EfficientDynamics features may be dependent

on the optional equipment chosen and may not be available for all

model versions. Your BMW Dealer will be happy to provide you with

more information on equipment features.

Electric Power Steering

Unlike conventional, hydraulic steering

systems, the electrical steering only uses

energy during actual steering. When the

steering wheel position is constant – for

example at high speed along the motorway –

the electric motor is inactive.

Tyres with reduced rolling-resistance

While driving, tyres are constantly changing

shape. This uses up energy and thus fuel.

Tyres with reduced rolling-resistance have

an improved design and use special materials

for their road treads and side walls, thus

reducing deformation.

Sports automatic transmission

with double clutch

This transmission changes gears with

lightning speed and without any power

gap. In automatic mode, fuel consumption

is reduced considerably, because the

transmission quickly and precisely selects

the appropriate gear for any situation.

Optimum Shift Indicator

Timely gear shifts are one of the most effective

and easiest ways to save fuel. This is where

the Optimum Shift Indicator in conjunction

with 6-speed manual transmission comes in.

It shows the driver what gear to use in order to

save fuel.

The pleasure you get from driving a BMW is the result of ﬁ ne engineering – always setting the benchmark because it is based on much more than

engine power. This is the tradition behind BMW Efﬁ cientDynamics. It includes the visionary Hydrogen engine, already used in a number of

completely emission-free BMW 7 Series sedans. Also going into production soon is the BMW ActiveHybrid – an intelligent, demand-oriented

combination of internal combustion engine and electric motor. And every BMW already includes the multi-award-winning BMW Efﬁ cientDynamics

technology package as standard that boosts dynamics even further whilst simultaneously reducing fuel consumption and CO

emissions.

And this is what comes out.

BMW already offers 24 models with CO

emissions of 140 g/km and signiﬁ cantly less.

But that’s just for starters. We’re carrying on

our research with Efﬁ cientDynamics – in the

quest to bring you more driving pleasure and

less emissions.

BMW Efﬁ cientDynamics

Less emissions. More driving pleasure.

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