BMW 2004 Annual Report Download - page 177

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47
Hydrogen – H2R --1 and --2
The BMW Group was the world’s first automobile
manufacturer to gear the medium- and long-term
development of its vehicles consistently to hydrogen-
based operation. The aim of this concept known as
BMW CleanEnergy is to avoid emissions and make
use of regenerative sources of energy.
Hydrogen can be used in a vehicle in different
ways: either in a combustion engine or as the supplier
of electric power for so-called “cold” combustion in
a fuel cell. The BMW Group chooses the technology
with the most advantages for the respective purpose.
Thus, the combustion engine is used for propulsion,
while a hydrogen-burning fuel cell is to replace the
generator supplying the on-board network with elec-
tricity.
In 2004 the BMW Group demonstrated a hydrogen-
powered automobile’s potential.The H2R prototype
set nine international records for vehicles powered by
a hydrogen-burning combustion engine.The H2R’s
technical data are impressive: its six-litre, 12-cylinder
power unit puts out more than 210 kW (285 bhp).
The hydrogen combustion engine is based on the
BMW 760i petrol engine and thus features ultramodern
technologies, such as fully variable VALVETRONIC
valve drive. The vehicle accelerates to 100 km/h in
approximately six seconds and reaches a top speed of
more than 300 km/h.
The H2R vehicle benefited from the ongoing se-
ries development of the future BMW hydrogen engine.
During the production cycle of the current BMW 7
Series, the BMW Group will make a 7 Series version
available to customers that can run on both hydrogen
and petrol – the world’s first premium sedan with dual-
mode operation.
--2