Motor vehicle electrical system having an electrical machine fun

Details Motor vehicle electrical system having an electrical machine fun Motor vehicle electrical system having an electrical machine fun

1994-10-20

1996-07-23

Ro, Bentsu

Electricity: motive power systems

Battery-fed motor systems

322 28, 322 29, 318147, 307 101, H02P 906

Patent

active

055392865

ABSTRACT:
A motor vehicle electrical system has an electrical machine with an on-board power supply generator function. The electrical machine can be operated, in a first mode, as an on-board power supply generator, having a regulator for setting the excitation current for the electrical machine, and having an electrical load having a comparatively high power consumption, for example a heating device for an exhaust gas catalytic converter. A changeover switch, by means of which an output of the electrical machine can optionally be connected to an on-board power supply cable or to the load, as well as a control unit for controlling the regulator and changeover switch optionally in the first mode or a second mode, is provided so that the electrical machine is connected to the on-board power supply and the regulator regulates the operating voltage at an on-board power supply voltage. Alternatively, the electrical machine is connected to the load and the regulator regulates the operating voltage at a higher nominal value. In addition to these two functions, a third function as a starter motor is provided for the electrical machine.

REFERENCES:
patent: 4239978 (1980-12-01), Kofink
patent: 4604528 (1986-08-01), Norton
patent: 4673797 (1987-06-01), Weirick
patent: 4730097 (1988-03-01), Campbell et al.
patent: 5175439 (1992-12-01), Harer et al.
patent: 5418401 (1995-05-01), Kaneyuki

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