- Patent Title: Spark plug electrode wearing rate estimating method and apparatus
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Application No.: US16420613Application Date: 2019-05-23
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Publication No.: US10651630B2Publication Date: 2020-05-12
- Inventor: Takahiro Karumi
- Applicant: NGK Spark Plug Co., LTD.
- Applicant Address: JP Nagoya
- Assignee: NGK Spark Plug Co., LTD.
- Current Assignee: NGK Spark Plug Co., LTD.
- Current Assignee Address: JP Nagoya
- Agency: Leason Ellis LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@587c14b7
- Main IPC: H01T13/20
- IPC: H01T13/20 ; F02P17/12 ; H01T21/02 ; H01T13/58
Abstract:
A spark plug electrode wearing rate estimating method for a spark plug in which spark discharge occurs between two electrodes by application of voltage generated by an ignition coil, includes the step of estimating a wearing rate of a first electrode in one spark discharge based on a temperature of the first electrode, and a spark discharge voltage and supply energy from the ignition coil. The first electrode contains any one of Ir, Ru, W, and Ni as a main component.
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