Drive system, especially for a motor vehicle, and method of operating same
AssigneesISAD Electronic Systems GmbH & Co. KG, Grundl und Hoffmann GmbH
InventorsUllrich Masberg, Thomas Pels, Klaus-Peter Zeyen, Andreas Gründl, Bernhard Hoffmann
Life of this patent
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Abstract
The invention concerns a drive system, especially for a motor vehicle, with a drive assembly, especially an internal combustion engine; an electric machine that is directly coupled or can be coupled to the drive shaft of the drive assembly, being designed such that it can start the drive assembly by merging in from standstill; and an automatic start-stop control of the drive assembly. The invention is also addressed to a method for operating such a drive system.
Claims14
A drive system, in particular for a motor vehicle, comprising:
- a drive system in the form of a combustion engine (1);
- an electrical machine (4) that is or can be coupled with a drive shaft (10) of the drive system which rotates with the same number of revolutions as the drive shaft (10) and arranged in such a way that by running together, the drive system can be started from the idle state;
- at least one inverter (17) which produces the voltages and/or currents with variable frequency, amplitude and/or phase required for the magnetic fields of the electrical machine (4);
- wherein the inverter (17) has an intermediate circuit on a voltage level higher than that of the on-board electrical system, and in said on-board electrical system, a power storage device (11) is provided for storage of electric energy;
- and wherein on the higher voltage level of the intermediate circuit, another power storage device (19,24) is provided for storage of electric energy, and with an automatic start-stop control system within the scope of which the drive system is controlled by the electrical machine (4).
Dependencies are inferred from the claim text.