To provide a starter motor control circuit capable of easily preventing generation of a short-circuit current by grounding in a power line of a starter motor in which a large electric current flows.
A key switch 13 is connected to a battery 11, and a starter motor starting signal line 19 of the starter motor 18 is connected to a start ST of the key switch 13 via a starter relay 16. A protection relay 22 is arranged in a battery line 21 between the battery 11 and the starter motor 18. A grounding detecting line 24 detecting grounding of the battery line 21 is arranged between the battery line 21 and a controller 14. The controller 14 has the function of limiting connecting operation of the starter relay 16 and the protection relay 22 even if the key switch 13 is switched to the start ST, when detecting the grounding of the battery line 21 by the grounding detecting line 24.
| JP6333443 | Engine starter |
| JP2002147321 | ENGINE STARTER |
| JP2002332939 | STARTER SWITCH USED IN ENGINE STARTER ELECTRIC CIRCUIT |
UENO YASUHIRO
HIRAOKA SEIJI
NEW ERA CO LTD
TOMOE SYSTEM KK
Satoshi Kabazawa
Tetsuya Yamada
Next Patent: EXHAUST GAS RECIRCULATING DEVICE