Table of Contents
Advertisement
Inte l ligent
Technology
Off -Road driving?
Your Audi does not have enoug h g round clea r-
ance to be used as an off -road vehicle. It is there -
fore best to avoid roug h tracks and uneven ter -
rain as much as possible. Also refe r to
¢ page 176.
A
WARNING
Always adjust your driving to road and t raff ic
conditions. Do not let the extra safety afford-
ed by all-wheel drive t em pt you int o ta king
extra risks.
-Although
the all-whee l dr ive is very effec-
t ive, always remember that bra king capac ity
is limited by tir e traction. You should th e re-
fore no t dr ive at excess ive speeds on icy or
s lippery road sur fa ces .
- On wet road surfaces, be caref ul not to dr ive
t oo fast becau se t he fr o nt wheels could be-
gin to slide on top of the wat er (aqu a plan-
ing). If t his shou ld occ ur, you will have no
warning from a sud d en increase in engine
speed as with a front -wheel dr ive ve hicle.
Always drive at speeds which are suited to
the road cond itions - risk of crash.
Energy
management
Starting ability is optimized
Energy management controls the distribution of
electrical energy and thus optimizes the availa-
bility of elect rical energy for starting the engine.
If a veh icle w it h a conventional energy syst em is
not d riven for a long per iod of t ime, the battery is
d ischa rged by idling curr ent consumers (e.g . im-
mo bilizer). In cert ain circu ms t an ces it can result
in t here be ing insuff icie nt ene rgy available to
st art the engine.
Intell igent energy managemen t in your vehicle
ha ndles the distrib uti on of ele ctri cal e nergy.
St arting a bility is marke dly imp roved and t he life
of the batte ry is extended.
Basically, e ne rgy managemen t consists of bat-
tery diagnosis, idling current management and
dynamic energy management.
174
Battery diagnosis
Batt ery d iagnosis con ti nuous ly dete rm ines t he
state of the bat t ery . Senso rs de t ermine ba tte ry
voltage, battery current and battery tempera-
ture. This determines t he current state of charge
and the power of the battery.
Idling current management
Idli ng cur rent ma nage ment reduc es e ne rgy con-
s umption whi le t he vehicle is standing . With the
ignition switched off , it contro ls the energy sup -
ply to the vario us elect rical components . Data
from battery diagnos is is cons idered.
Depend ing on t he ba ttery's st ate of char g e, indi-
vidual consumers are gradually turned off to pre-
vent excess ive discha rge of t he battery a nd thus
maintain starting capab ility.
Dynamic energy management
While the vehicle is being driven, dynami c e nergy
manageme nt distrib utes t he energy generated
according to the needs of the indiv idual compo-
nents. It regulates consumption, so that more
electrical energy is not being used than is being
generated and ensures an opt imal state of
charge for the battery .
(D
Tips
- But even ene rgy management
cannot neg -
ate the lim its of physics. Consider that the
powe r and life of a battery are lim ited.
- If starting ab ility is threatened,
the indica -
to r light (•) ::ippears
¢
page 14.
What you should know
The highest priority is given to maintaining start-
ing capability.
The battery is seve rely taxed in short -distance
driving, in city traffic and during the cold time of
year. Abundant electrical energy is required, but
o nly a little is generated. It is also critical if the
engine is not running and elec tr ical components
a re t ur ned on. In this instance energy is being
consu med but none is being ge nerated.
.,..
Advertisement
Table of Contents
