- Patent Title: Combustion pre-chamber assemblies for an internal combustion engine
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Application No.: US16680921Application Date: 2019-11-12
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Publication No.: US11614027B2Publication Date: 2023-03-28
- Inventor: Alan C. Anderson , William Marshall Cover , Xu Han , Nicholas James Welch , David Guillermo Gonzalez Medina , Xiao Qin , Andrew Guy Kitchen , Daniel J. O'Connor , Benjamín L. Olivas
- Applicant: Cummins Inc.
- Applicant Address: US IN Columbus
- Assignee: Cummins Inc.
- Current Assignee: Cummins Inc.
- Current Assignee Address: US IN Columbus
- Agency: Taft, Stettinius & Hollister LLP
- Main IPC: F02B19/08
- IPC: F02B19/08 ; F02B19/18

Abstract:
A combustion pre-chamber assembly includes pre-chamber device body defining an annular plenum that is in fluid communication with the at least one bore that extends through the spark plug shell. The annular plenum is also in communication with at least one purging passage that extends from the annular plenum to an end surface of the pre-chamber device body. Residual exhaust gases in the annular volume of the spark plug are purged by fresh charge flow from the main combustion chamber as the piston approaches top dead center. The fresh charge flow that is provided to the annular plenum through the at least one purging passage and into the annular volume of the spark plug through the at least one bore through the spark plug shell.
Public/Granted literature
- US20200080466A1 COMBUSTION PRE-CHAMBER ASSEMBLIES FOR AN INTERNAL COMBUSTION ENGINE Public/Granted day:2020-03-12
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