BMW ActiveHybrid
Hybrid system
At a glance
1 Combustion engine
2 Electric motor
3 High-voltage cables: orange
4 High-voltage battery
The concept
The hybrid system makes it possible to optimize
fuel consumption and driving characteristics.
An electric motor supports the combustion en‐
gine in certain driving situations. This lowers fuel
consumption.
In addition to this, the electric motor acts like an
alternator: during braking, it converts the vehi‐
cle's kinetic energy into electricity. The current
is stored in the high-voltage battery and is used
to drive the electric motor.
The hybrid system combines the following func‐
tions:
▷
Acceleration boost.
▷
Energy recovery: conversion and storage of
kinetic energy as electric current.
▷
Automatic engine start-stop function: auto‐
matic stopping and starting the combustion
engine when standing, for instance at a traf‐
fic light.
▷
Electric operation of the automatic climate
control.
Functions
Boost
Driving off and accelerating require a lot of en‐
ergy. To reduce fuel consumption during high
acceleration and to optimize acceleration, the
electric motor supports the combustion engine.
For this purpose, the electric motor is supplied
by the high-voltage battery.
Energy recovery
The high-voltage battery of the hybrid system is
charged through energy recovery.
The electric motor acts as a generator and con‐
verts the motion of the vehicle into electric cur‐
rent.
Charging can take place in various situations
while the vehicle is being driven:
▷
When the vehicle is rolling if the accelerator
is not pressed.
▷
During vehicle braking.
When exerting gentle pressure on the brakes,
the vehicle is only braked by the electric motor.
When the brake pedal is depressed further, the
brake system is activated additionally. This is
why only part of the brake energy is used to
charge the high-voltage battery when exerting
firm pressure on the brake.
Foresighted driving and the early reduction of
speed are important to make full use of the hy‐
brid characteristics of your vehicle.
Automatic Engine Start/Stop Function
The
automatic engine start-stop function, refer
to page 67,
switches the combustion engine
off during a stop. Convenience functions such
as the automatic climate control are supplied by
the high-voltage battery and can remain
switched on. The combustion engine starts
again automatically for driving off.
Seite 29
29
Online Edition for Part no. 01 41 2 603 958 - 03 10 500
Reference
Mobility
Communication
Entertainment
Navigation
Driving tips
Controls
At a glance
Содержание 2011 7 Series
Страница 2: ......
Страница 10: ...10 Online Edition for Part no 01 41 2 603 958 03 10 500 ...
Страница 32: ...32 Online Edition for Part no 01 41 2 603 958 03 10 500 ...
Страница 138: ...138 Online Edition for Part no 01 41 2 603 958 03 10 500 ...
Страница 146: ...146 Online Edition for Part no 01 41 2 603 958 03 10 500 ...
Страница 164: ...164 Online Edition for Part no 01 41 2 603 958 03 10 500 ...
Страница 202: ...202 Online Edition for Part no 01 41 2 603 958 03 10 500 ...
Страница 220: ...220 Online Edition for Part no 01 41 2 603 958 03 10 500 ...
Страница 254: ...254 Online Edition for Part no 01 41 2 603 958 03 10 500 ...
Страница 278: ......
Страница 280: ...ActiveHybrid 7 US En ...