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1. US20120013241 - Spark plug containing specific ratio content

官庁 アメリカ合衆国
出願番号 13259219
出願日 15.10.2010
公開番号 20120013241
公開日 19.01.2012
特許番号 08283846
特許付与日 09.10.2012
公報種別 B2
IPC
H01T 13/20
H電気
01基本的電気素子
Tスパークギャップ;スパークギャップを用いる過電圧避雷器;スパークプラグ;コロナ放電装置;密閉されない気体中へ導入されるイオンの発生
13スパークプラグ
20電極または絶縁体の形状に特徴のあるもの
F02P 13/00
F機械工学;照明;加熱;武器;爆破
02燃焼機関;熱ガスまたは燃焼生成物を利用する機関設備
P内燃機関の点火で圧縮点火以外のもの;圧縮点火機関の点火時期の試験
13内燃機関の他の部品と結合した構造の点火プラグ
CPC
H01T 13/39
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
13Sparking plugs
20characterised by features of the electrodes or insulation
39Selection of materials for electrodes
C22C 19/058
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
19Alloys based on nickel or cobalt
03based on nickel
05with chromium
058without Mo and W
出願人 NGK Spark Plug Co., Ltd.
優先権情報 2009-292950 24.12.2009 JP
発明の名称
(EN) Spark plug containing specific ratio content
要約
(EN)

The object of the invention is to provide a spark plug including a central electrode and/or a ground electrode with a gap, which can suppress generation of corrosion-like generated foreign substances while maintaining high thermal conductivity and high strength. The gap between the central electrode and the ground electrode with at least one of the central electrode and the ground electrode formed from an electrode material including 96% by mass or more of Ni, in which the electrode material includes a total content of from 0.05% by mass to 0.45% by mass of at least one selected from a group consisting of Y and rare earth elements, 0.05% by mass or more of Mn, and a total content of 0.01% by mass or more of at least one selected from a group consisting of Ti, V, and Nb, and the ratio (a/b) of the total content (a) of Ti, V, and Nb to the content (b) of Mn is from 0.02 to 0.40.