Electrical accessory device controlling system for a motor vehicle and process for operation thereof
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United States of America Patent
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Jul 13, 2004
Grant Date -
Mar 20, 2003
app pub date -
Jul 11, 2002
filing date -
Jul 11, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
An electrical accessory device controller system and process for controlling for a motor vehicle having a vehicle battery and an alternator. The system is provided with an electrical interface for an electrical accessory device, a device for detecting the voltage of the vehicle electrical system, and a power supply control unit to connect the electrical accessory device to the battery according to the detected battery voltage or to disconnect the electrical accessory device from it. Furthermore, there is an auxiliary energy storage device rechargeable by the alternator and which is connected to the power supply control unit. The power supply control unit is made such that depending on the detected voltage of the vehicle electrical system it electrically connects the auxiliary power storage device to the electrical accessory device to the battery or disconnects the electrical accessory device from it.
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