Method of producing a spark plug and spark plug for an internal combustion engine
By laser beam welding a nickel alloy deposition layer onto a thin precious metal plate and electrode carrier, the spark plug production method addresses downsizing and material efficiency challenges, achieving cost-effective and environmentally friendly spark plug manufacturing.
Patent Information
- Application Number
- EP2023710181
- Authority / Receiving Office
- EP · EP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-03-02
- Publication Date
- 2026-04-29
- Estimated Expiration
- 2043-03-02
AI Technical Summary
Existing spark plugs for internal combustion engines face challenges in downsizing and material efficiency due to the need for expensive precious metals, which are also rare and costly to produce, while maintaining performance under harsh operating conditions.
A method involving laser beam welding of an electrode plate onto an electrode carrier, utilizing a build-up welding process to add a deposition layer made of a less precious metal, such as nickel alloy, onto a thin precious metal plate, allowing for reduced precious metal usage and improved material efficiency.
This approach reduces the use of rare and expensive precious metals, enhances material utilization, and improves economic and ecological aspects by minimizing material waste and production costs while maintaining electrode performance.