The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 2023
Filed:
Nov. 12, 2019
Cummins Inc., Columbus, IN (US);
Alan C. Anderson, Columbus, IN (US);
William Marshall Cover, Columbus, IN (US);
Xu Han, Columbus, IN (US);
Nicholas James Welch, Columbus, IN (US);
David Guillermo Gonzalez Medina, Columbus, IN (US);
Xiao Qin, Columbus, IN (US);
Andrew Guy Kitchen, Newnham—Daventry, GB;
Daniel J. O'Connor, Columbus, IN (US);
Benjamín L. Olivas, Columbus, IN (US);
Cummins Inc., Columbus, IN (US);
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.