Invention Grant
- Patent Title: Spark plug including high temperature performance electrode
- Patent Title (中): 火花塞包括高温性能电极
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Application No.: US12837026Application Date: 2010-07-15
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Publication No.: US08575829B2Publication Date: 2013-11-05
- Inventor: Shuwei Ma , James D. Lykowski
- Applicant: Shuwei Ma , James D. Lykowski
- Applicant Address: US MI Southfield
- Assignee: Federal-Mogul Ignition Company
- Current Assignee: Federal-Mogul Ignition Company
- Current Assignee Address: US MI Southfield
- Agency: Reising Ethington P.C.
- Main IPC: H01T13/20
- IPC: H01T13/20

Abstract:
A spark plug includes at least one electrode having a sparking end. The sparking end is formed of a high temperature performance alloy including chromium in an amount of 10.0 weight percent to 60.0 weight percent, palladium in an amount of 0.5 weight percent to 10.0 weight percent, and a balance substantially of at least one of molybdenum and tungsten. The sparking end presents a spark contact surface, and at a temperature of at least 500° C., such as during use of the spark plug in an internal combustion engine, a layer of chromium oxide (Cr2O3) forms at said spark contact surface. The layer of Cr2O3 protects the bulk of the sparking end from the extreme conditions of the combustion chamber and prevents erosion, corrosion, and balling.
Public/Granted literature
- US20110012498A1 SPARK PLUG INCLUDING HIGH TEMPERATURE PERFORMANCE ELECTRODE Public/Granted day:2011-01-20
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