| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vehicle electric system control device capable of improving fuel economy without adversely affecting an electrical equipment load. <P>SOLUTION: The vehicle electric system control device comprises a voltage converter connected between a vehicle electric supply system and the electrical equipment load and converting supply voltage to the electrical equipment load and the control device controlling the generating condition of a generator and a voltage conversion operation of the voltage converter according to the charging condition of an on-vehicle battery and the vehicle running condition, and is constructed so as to independently control each of the supply voltage from the generator to the on-vehicle battery and the supply voltage to the electrical equipment load. It is possible to independently control each of the generating voltage to a voltage suitable to charging the on-vehicle battery and the output voltage of the voltage converter to a voltage suitable to operation of the electrical equipment load, whereas the voltage control of the generator is conventionally required performed in the range not adversely affecting the electrical equipment load. Accordingly, it is possible to constantly supply the electrical equipment load with the voltage suitable to operation of the electrical equipment load and can immediately set the generating voltage low in accelerating the vehicle and the like, therefore fuel economy effect by driving torque reduction of the generator can be improved. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
