| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an engine starting device capable of starting an engine of a vehicle at high reliability by step-up operation even in time of lowering of battery output voltage, and also minimizing the problem of radiation noise and an increase in current consumption involved in the step-up operation. <P>SOLUTION: Through control of a control circuit 14, a step-up circuit 20 is activated so that drive voltage does not become lower than minimum operation voltage of a starter rely 3 in a predetermined period necessary to start an engine in time of an engine start, and the step-up circuit 20 is activated so that the drive voltage does not become lower than a first voltage value higher than minimum operation voltage of the control circuit 14 and lower than minimum operation voltage of the starter relay 3 when not in the predetermined period. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
