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Effizienzsteigerung bei Hybridantrieben durch Steuerungs- und Informationssysteme
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Datum
2011
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Umweltbundesamt
Zusammenfassung
Vehicles with hybrid drive systems are characterized by their driving dynamics, their
energy efficiency and their environment-friendliness especially. Dependent on the
electrical power and the drive train structure these hybrid drives are grouped into
different classes. Designations such as micro-hybrid, mild-hybrid, full-hybrid, serial-
hybrid, serial/parallel-hybrid or power-split-hybrid reflect the large variance of these
different drive train possibilities.
In hybrid drive systems electronically controlled converters take an important role.
With such a converter also the energy exchange between electrical power system
and electrical machine is regulated. The reduction of the vehicle fuel consumption
here is of special interest. Today's hybrid vehicles use for the control mainly
information from the present driving conditions, taking into account the actual
electrical power system-charge as well as the power demand of the driver. With such
a control already considerable fuel reductions are reached. But additionally
superimposed control and information systems promise substantial potential for more
fuel reduction. With these systems an outstanding energy-saving and anticipatory
way of driving could be realized. The aim is to find the best operating point in each
case for the combustion engine and to adapt the charge state of the electrical power
system to the respective driving situation.