Audi Q5 - Service Manual download pdf (Page 38)

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38 Audi ultra

Audi ultra:

Every gram less extends the lead.

Audi ultra, the pioneering lightweight technology

from Audi, is more than just the sum of its

individual components. It combines innovative

materials, intelligent design principles and

production processes that use resources sparingly

into an overall concept. Many Audi ultra lightweight

measures have already been implemented in the

Audi Q5 and Q5 hybrid quattro.

That starts with the body itself. The steel shell

design of the Audi Q5 and Q5 hybrid quattro

combines low weight with high rigidity. The

tailor-made floor pan is made using different

material thicknesses and qualities. The design

uses only as much material as necessary in all the

right places.

The principle has convinced others, too: when it

was launched in 2008, the Q5 body was honoured

with the world’s top prize for bodywork, the

EuroCarBody Award*.

Extensive use of hot- and cold-formed steels of

high rigidity classes allows thin metal panels to

be used for the body. The aluminium components

on the front and rear axles and the lightweight

cast aluminium wheels not only reduce the

overall weight but also the unsprung masses,

which in turn leads to an increase in driving

comfort. A lightweight brake reduces weight

even further.

Drive technologies such as direct fuel injection

and turbocharging have always made Audi

engines more powerful. The modern TDI and

TFSI engines in the Audi Q5 produce more power

with a smaller engine size, making them signifi-

cantly lighter than the corresponding engines

used in earlier model series. The combination

of a 4-cylinder engine with an electric motor

is particularly impressive. The Audi Q5 hybrid

quattro is one of the first full hybrids to use a

lithium-ion battery – the lightest type of battery

currently available.

Each lightweight component has an effect on

other components, allowing their dimensions to

be reduced as well. The result is a continuous

development process towards less and less

weight and more and more efficiency. In figures:

a vehicle that weighs 100 kg less can save up to

0.3 litres of fuel per 100 km.

* International Body Benchmark Conference EuroCarBody 2008, press release cf. www.automotive-circle.com/pdf/ecb08/ecb_press_e.doc.

The fuel consumption and CO₂ emission figures can be found from page 106 onwards.

Audi ultra on the podium: the Audi R18 ultra

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Audi Q5 - Service Manual Page 38

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