ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,088, issued on Aug. 11, was assigned to M2X Energy Inc. (Rockledge, Fla.).

"Pre-chamber combustion systems and methods" was invented by Kyle I. Merical (Winston-Salem, N.C.), Andrew Randolph (Salisbury, N.C.), John Anthony Dean (Scotia, N.Y.), Paul E. Yelvington (Rockledge, Fla.) and Joshua B. Browne (New York).

According to the abstract* released by the U.S. Patent & Trademark Office: "There are provided systems and methods for the use of rich limit extenders, and in particular pre-chamber assemblies, for increasing the ability of a spark-ignition engine to operate under fuel-rich conditions. In embodiments the pre-chamber assemblies are combined with spark-ignition engines as a...