Drive systems, especially for a motor vehicle, and method of operating same
First Claim
1. A drive system, in particular for a motor vehicle, comprisinga combustion engine (1);
- an electrical machine (4) acting on the crankshaft (10) of the combustion engine (1) or a shaft coupled therewith, for active reduction of rotational fluctuations, such electrical machine (4) being controlled by an inverter (17) by sine-evaluated pulse modulation with a clock frequency of at least 10 kHz, anda microcomputer controller (31) which controls both the combustion engine (1) as well as the inverter (17) of the electrical machine (4) for actively reducing rotational fluctuations.
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Accused Products
Abstract
The invention concerns a drive system, especially for a motor vehicle, with a drive assembly, especially an internal combustion engine (1), and at least one electric machine (4) for active reduction of rotational nonuniformities, acting on the drive assembly, in particular, its drive shaft (10) or a shaft coupled or which can be coupled to it, wherein at least one sensor (16, 32) of the drive system and/or at least one quantity derived from sensor information serves both to control the drive assembly and also to control the electric machine (4), and/or wherein a control unit (31 and 33, respectively) responsible for the control of the electric machine (4) or of the drive assembly also partly or entirely controls the drive assembly or the electric machine (4), respectfully. The invention is also oriented to a method of operating such a drive system.
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Citations
13 Claims
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1. A drive system, in particular for a motor vehicle, comprising
a combustion engine (1); -
an electrical machine (4) acting on the crankshaft (10) of the combustion engine (1) or a shaft coupled therewith, for active reduction of rotational fluctuations, such electrical machine (4) being controlled by an inverter (17) by sine-evaluated pulse modulation with a clock frequency of at least 10 kHz, and a microcomputer controller (31) which controls both the combustion engine (1) as well as the inverter (17) of the electrical machine (4) for actively reducing rotational fluctuations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A drive system, in particular for a motor vehicle, comprising:
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a combustion engine (1); an electrical machine (4) acting on the crankshaft (10) of the combustion engine (1) or a shaft coupled therewith, for active reduction of rotational fluctuations, such electrical machine (4) being controlled by an inverter (17) sine-evaluated pulse modulations with a clock frequency of at least 10 kHz, a crankshaft angle sensor (16) with an accuracy of at least 0.5 degrees, wherein the information supplied by the crankshaft angle sensor (16) is used to control both the combustion engine (1) as well as the electrical machine (4).
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Specification