Abstract: An ignition coil for an internal combustion engine is provided with a coil section that includes a primary coil and a secondary coil, and a connector case section. The primary coil is formed by winding a primary electric wire about the outer periphery of a primary spool made of a resin. The connector case section is provided with terminals each formed of a conductor and arranged from a fitting hole of the connector case section to a connector portion. In each terminal, an insertion portion arranged in the fitting hole is formed with an insertion slit in a fitting direction in which the coil section is fitted to the connector case section. Each winding end portion is drawn out substantially along a winding direction of the primary electric wire and inserted into the insertion slit in the fitting direction.

Abstract: An ignition coil for an internal combustion engine is provided with a coil section that includes a primary coil and a secondary coil, and a connector case section. The primary coil is formed by winding a primary electric wire about the outer periphery of a primary spool made of a resin. The connector case section is provided with terminals each formed of a conductor and arranged from a fitting hole of the connector case section to a connector portion. In each terminal, an insertion portion arranged in the fitting hole is formed with an insertion slit in a fitting direction in which the coil section is fitted to the connector case section. Each winding end portion is drawn out substantially along a winding direction of the primary electric wire and inserted into the insertion slit in the fitting direction.

Abstract: An ignition control device for controlling a multi-spark operation comprises: a secondary electric energy generator generating an electric energy to reignite an air fuel-mixture associated with an internal combustion engine during the multi-spark operation; a switching element capable of controlling the supplying of the electric energy to a primary coil of an ignition coil, the controlling causing a secondary current in a secondary coil of the ignition coil; an ignition timing signal generator generating an ignition timing signal based on a driving state of the engine; a multi-spark period setting element setting a multi-spark period of the multi-spark operation based on the ignition timing signal; and an ignition control element setting an amount of electric power supplied to the secondary electric energy generator based on the multi-spark period before the performing of the multi-spark operation is started, and for controlling the switching element.

Abstract: An ignition control device for controlling a multi-spark operation comprises: a secondary electric energy generator generating an electric energy to reignite an air fuel-mixture associated with an internal combustion engine during the multi-spark operation; a switching element capable of controlling the supplying of the electric energy to a primary coil of an ignition coil, the controlling causing a secondary current in a secondary coil of the ignition coil; an ignition timing signal generator generating an ignition timing signal based on a driving state of the engine; a multi-spark period setting element setting a multi-spark period of the multi-spark operation based on the ignition timing signal; and an ignition control element setting an amount of electric power supplied to the secondary electric energy generator based on the multi-spark period before the performing of the multi-spark operation is started, and for controlling the switching element.