发明名称 ION CURRENT DETECTION APPARATUS
摘要 <P>PROBLEM TO BE SOLVED: To provide an ion current detection apparatus in which reduction in costs can be achieved. <P>SOLUTION: An ion current detection apparatus includes: an ignition coil 1 which is configured by electromagnetically coupling a primary coil L1 and a secondary coil L2; a switching element 2 for controlling ON/OFF of a current of the primary coil L1; an ignition plug which is discharged during the OFF of the switching element 2; a transistor Q2 which outputs an output voltage of a first DC level generated by dropping a DC voltage of a DC power source; a transistor Q1 which is operated by receiving, in an emitter terminal, the output voltage of the transistor Q2 and outputs a detection voltage from a load resistor R2 connected to a collector terminal, and a bias resistor R1 disposed between a base terminal of the transistor Q1 and the ignition plug. An ion current that flows to the ignition plug is detected on the basis of a base voltage of the transistor Q1. <P>COPYRIGHT: (C)2013,JPO&INPIT
申请公布号 JP2012241606(A) 申请公布日期 2012.12.10
申请号 JP20110112073 申请日期 2011.05.19
申请人 DIAMOND ELECTRIC MFG CO LTD 发明人 INAMURA GONOSUKE;IZUMI MITSUHIRO
分类号 F02P17/12;F02P3/04;F02P15/00 主分类号 F02P17/12
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