ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,046, issued on March 18, was assigned to Volvo Truck Corp. (Gothenburg, Sweden).
"Internal combustion engine for gaseous fuel" was invented by Jan Eismark (Gothenburg, Sweden), Tommy Simonsson (Stenungsund, Sweden), Rickard Ehleskog (Hisings Backa, Sweden) and Gustavo Hindi (Alafors, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "An internal combustion engine for gaseous fuel includes a cylinder and a piston for reciprocal movement in the cylinder along a reciprocal axis, whereby a combustion chamber is at least partially delimited by the cylinder and the piston. The piston includes a piston crown facing the combustion chamber, a piston crow...