Invention Grant
- Patent Title: Pre-chamber spark plug with tubular electrode and method of manufacturing same
-
Application No.: US14833291Application Date: 2015-08-24
-
Publication No.: US11674494B2Publication Date: 2023-06-13
- Inventor: Gregory James Hampson , Domenico Chiera
- Applicant: Woodward, Inc.
- Applicant Address: US CO Fort Collins
- Assignee: Woodward, Inc.
- Current Assignee: Woodward, Inc.
- Current Assignee Address: US CO Fort Collins
- Agency: Fish & Richardson P.C.
- The original application number of the division: US13042599 2011.03.08
- Main IPC: F02P15/10
- IPC: F02P15/10 ; H01T13/54

Abstract:
A pre-chamber spark plug that includes a shell, and an end cap attached to the shell. Additionally, the pre-chamber spark plug includes an insulator disposed within the shell. In a particular embodiment, a center electrode has a first portion surrounded by the insulator, and a second portion that extends from the insulator into a pre-chamber. The pre-chamber defined by the shell and end cap. In a further embodiment, a ground electrode is attached to the shell. In particular embodiments, the ground electrode is tubular in shape and includes an inner spark surface ring spaced in surrounding relation to the center electrode to create a spark gap, an outer ring attached to the shell, and a plurality of rounded spokes connecting the inner and outer rings. In a particular embodiment, the ground and center electrodes accommodate attachment of precious metal alloys to increase electrode surface life.
Public/Granted literature
- US20150361945A1 Pre-Chamber Spark Plug With Tubular Electrode And Method of Manufacturing Same Public/Granted day:2015-12-17
Information query