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Method and device for operating a starter of a vehicle

A technology for starters and motor vehicles, which is applied in the directions of engine starting, motor generator/starter, engine motor starting, etc., and can solve problems such as non-starting and delaying the motor.

Active Publication Date: 2013-04-24
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage here is, however, that such a limitation is enforced even under unfavorable operating conditions of the electric motor, for example at low temperatures and / or low supply voltages
In particular, it can happen that the starting process of the electric motor is delayed or the electric motor does not start at all at first in such a situation

Method used

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  • Method and device for operating a starter of a vehicle
  • Method and device for operating a starter of a vehicle
  • Method and device for operating a starter of a vehicle

Examples

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Embodiment Construction

[0034] figure 1 The temporal profile of an onboard electrical system voltage and a starter current is shown. The time t is plotted in arbitrary units in this sketch. The vehicle electrical system voltage U in volts is plotted on the left ordinate. The starter current I in amperes is plotted on the right ordinate. The temporal profile of the vehicle electrical system voltage is indicated by reference numeral 101 . The temporal profile of the starter current is indicated by reference numeral 103 . Note that the starter current rises up to approximately 1000A when the starter is switched on. At the same time, the vehicle electrical system voltage drops from approximately 12.5V to approximately 7V. In particular, the electrical consumers of the onboard electrical system are shut down during the starting process by this voltage drop and must be restarted as soon as the onboard electrical system voltage is within the permissible range again.

[0035] With the help of figure ...

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Abstract

The invention relates to a method for operating a starter (203) of a vehicle, according to which a physical quantity is measured, characterized in that, depending on the measured physical quantity, a starter current of the starter (203) is limited or not limited, wherein, in the event that the starter current is limited, the limitation is ended after a predetermined time. The invention further relates to a device (201) for operating a starter of a vehicle and to a control program.

Description

technical field [0001] The invention relates to a method and a device for operating a starter of a motor vehicle. The invention also relates to a control program. Background technique [0002] It is known to limit the current flow by means of fuses, for example in motor vehicles or household electronics. These fuses trip when an overcurrent occurs and usually have to be replaced or reactivated by the user after the cause of the overcurrent has been rectified. [0003] However, there are also consumers in which, for example, very short overload current peaks occur during switch-on and permanent disconnection of the circuit is not permitted. Examples are incandescent light bulbs, relays, and electric motors. Due to the described current peaks, the supply voltage drops strongly, for example through additional series resistances in the battery. [0004] Another example of the behavior just described is a sudden drop in the onboard electrical system voltage of the onboard ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08H02P1/04H02P1/20G05B19/042
CPCG05B19/042F02N2250/02H02P1/04H02P1/20F02N11/08F02N11/087F02N2300/2011
Inventor R·雷蒂希W·席曼
Owner ROBERT BOSCH GMBH
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