Device for minimizing the current consumption of a motor vehicle generator from the battery during the starting phase of the motor vehicle
AssigneeRobert Bosch GmbH
InventorsAndre Micko, Michael Herz
Life of this patent
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Abstract
A device for minimizing the current consumption of a motor vehicle generator from the battery during the starting phase of a motor vehicle, has a generator unit and a generator regulator. The generator regulator includes a regulator control, which has a unit for providing a first control signal having a fixedly specified pulse duty factor, a unit for providing a second control signal having a pulse duty factor that is a function of the excitation current, and a unit for selecting the control signal having the smaller of the two pulse duty factors, which is supplied to the output stage of the generator regulator as the control signal.
Claims5
A device for minimizing the current consumption of a motor vehicle generator from a battery during a starting phase of the motor vehicle, comprising:
- a generator regulator having a regulator control and an output stage;
- wherein the regulator control supplies an output control signal having a pulse duty factor to the output stage, and wherein the regulator control includes:
- a first unit providing a first control signal having a specified, fixedly set pulse duty factor;
- a second unit providing a second control signal in parallel with the first control signal, the second control signal having a pulse duty factor which is a function of an excitation current;
- and
- a selection unit (i) selecting one of the first and second control signals having the smaller pulse duty factor based on a comparison of the first and second parallel control signals, and (ii) supplying the selected control signal to the output stage as the output control signal, wherein the selection unit is distinct from the first and second units.
A device for minimizing the current consumption of a motor vehicle generator from a battery during a starting phase of the motor vehicle, comprising:
- a generator regulator having a regulator control and an output stage;
- wherein the regulator control supplies an output control signal having a pulse duty factor to the output stage, and wherein the regulator control includes:
- a first unit providing a first control signal having a specified, fixedly set pulse duty factor;
- a second unit providing a second control signal in parallel with the first control signal, the second control signal having a pulse duty factor which is a function of an excitation current;
- and
- a selection unit distinct from the first and second units;
- wherein:
- the selection unit includes a comparator for selecting one of the first and second control signals having the smaller pulse duty factor;
- the comparator is connected to the first unit providing the first control signal and to the second unit providing the second control signal, wherein the comparator compares the first and second parallel control signals;
- and
- the comparator provides, on an output side, the one of the first and second control signals having the smaller pulse duty factor based on the comparison between the first and second parallel control signals.
Dependencies are inferred from the claim text.