Start circuit for engine


PURPOSE: To prevent generation of chattering in a main relay by providing a diode to allow current from a starter terminal side to an ignition terminal side between the ignition terminal and the starter terminal. CONSTITUTION: When the key contact 20 of an ignition key 10 is contacted with an ignition terminal 26, a relay coil 32 is excited, electric power is supplied from a battery 4, and a control part 44 and the like are started to control an engine. Nextly, when the contact 20 is contacted with a starter terminal 28, a starter is actuated to start the engine. Because a diode 54 to allow current from the starter terminal 28 side to the relay coil 32 side as the ignition terminal 26 side is provided, electric power from the battery 4 can be continuously supplied to the control part 44 and the like. Hereby, the function of the control part 44 and the like is held, a fuel injection valve or the other parts can be appropriately actuated, and maloperation of the system can be prevented. COPYRIGHT: (C)1991,JPO&Japio




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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    KR-100716836-B1May 03, 2007기아자동차주식회사차량의 저항 변화 감지형 이그니션 스위치장치
    US-8044531-B2October 25, 2011Honda Motor Co., Ltd.Engine starting device