Invention Grant
- Patent Title: Direct-injection spark-ignition system
- Patent Title (中): 直喷式点火系统
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Application No.: US12057826Application Date: 2008-03-28
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Publication No.: US08146555B2Publication Date: 2012-04-03
- Inventor: Arun S. Solomon , Ronald M. Otto , Patrick G. Szymkowicz
- Applicant: Arun S. Solomon , Ronald M. Otto , Patrick G. Szymkowicz
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F02B25/06
- IPC: F02B25/06 ; H01T13/20

Abstract:
A spark plug includes a center electrode substantially aligned with a longitudinal first axis and a surface-gap ground electrode radially aligned with the center electrode along a surface-gap electrode second axis substantially orthogonal to the longitudinal first axis and passing therethrough. The center electrode and the surface-gap ground electrode define a radial spark gap therebetween. The spark plug further includes a J-gap ground electrode radially aligned with the center electrode. The center electrode and the J-gap ground electrode define an axial spark gap therebetween. The J-gap ground electrode radial alignment has an angular separation from the surface-gap electrode second axis of no greater than about 30 degrees.
Public/Granted literature
- US20080257303A1 DIRECT-INJECTION SPARK-IGNITION SYSTEM Public/Granted day:2008-10-23
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