发明名称 IGNITION PLUG FOR GAS ENGINE
摘要 PROBLEM TO BE SOLVED: To provide an ignition plug for a gas engine superior in ignition efficiency and durability. SOLUTION: This ignition plug for gas engine is disposed for a sub combustion chamber of a sub chamber type lean combustion gas engine equipped with the sub combustion chamber communicating with a main combustion chamber. A center electrode 1 of a center electrode body Ec and a ground electrode 2 of a ground electrode body Eg disposed to confront to each other in an interval are formed by a material mainly consisting of iridium. A groove 1A is formed in a recessed condition on a confronting ground electrode surface 1a of the central electrode 1 confronting the ground electrode 2. When a diameter of the center electrode 1 is D1, a diameter of a ground electrode 2 is D2, a width of the groove 1A is W, and a depth of the groove 1A is H, the center electrode 1 and the ground electrode 2 are constituted to satisfy following expressions; D1>1.5 mm, D1÷15<W<D1÷5, H>D1÷5, and D2>0.9×D1.
申请公布号 JP2002313523(A) 申请公布日期 2002.10.25
申请号 JP20010113957 申请日期 2001.04.12
申请人 OSAKA GAS CO LTD;DENSO CORP 发明人 AIDA YASUKI;FUJIWAKA TAKAO;SHIMIZU TOSHIKAZU;ISHIGURO HIROYA
分类号 F02P13/00;F02M21/02;H01T13/20;(IPC1-7):H01T13/20 主分类号 F02P13/00
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