Method for regulating the generator voltage in a motor vehicle
First Claim
1. Method for regulating a generator in a motor vehicle, with the generator feeding a vehicle power supply system having loads and having at least one battery, with a regulator regulating the generator output voltage at the value of a nominal value voltage, with the nominal value voltage in a recuperation readiness mode being preset as a function of the driving state variables such that, during braking or when the vehicle is overrunning, electrical power is fed into the vehicle power supply system, characterized in that switching takes place between the recuperation readiness mode and a recovery mode as a function of predetermined switching conditions, with the nominal value voltage (U_nom) in the recovery mode being preset such that the battery (5) is regenerated.
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Abstract
The invention relates to a method for regulating a generator in a motor vehicle, in which the generator feeds a vehicle power supply system having loads and having at least one battery, with a regulator regulating the generator output voltage at the value of a nominal value voltage. In a recuperation readiness mode, the nominal value voltage is preset as a function of the driving state variables such that, during braking or when the vehicle is overrunning, electrical power is fed into the vehicle power supply system. According to the invention, switching takes place between the recuperation readiness mode and a recovery mode as a function of predetermined switching conditions, with the nominal value voltage in the recovery mode being preset such that the battery is regenerated.
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Citations
9 Claims
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1. Method for regulating a generator in a motor vehicle,
with the generator feeding a vehicle power supply system having loads and having at least one battery, with a regulator regulating the generator output voltage at the value of a nominal value voltage, with the nominal value voltage in a recuperation readiness mode being preset as a function of the driving state variables such that, during braking or when the vehicle is overrunning, electrical power is fed into the vehicle power supply system, characterized in that switching takes place between the recuperation readiness mode and a recovery mode as a function of predetermined switching conditions, with the nominal value voltage (U_nom) in the recovery mode being preset such that the battery (5) is regenerated.
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9. Generator controller 7 for regulating the generator voltage in a motor vehicle having a generator which is driven by an internal combustion engine and having a vehicle power supply system, having
at least one battery and a regulator which regulates the generator output voltage at the value of a nominal value voltage, with the generator controller having a data input for driving state variables and battery characteristic variables, and having a data output for the nominal value voltage, and in which case the nominal value voltage can be preset by the generator controller such that electrical power is fed into the vehicle power supply system as a function of the driving state variables in the recuperation readiness mode, characterized in that the generator controller 7 has an evaluation unit for determining the state of charge SOC of the battery and for evaluating driving state variables of the motor vehicle, and in that the generator controller 7 has a switching step for switching between the recuperation readiness mode and the recovery mode.
Specification