PREVENTION OF BACKFIRING OF A PRE-CHAMBER GAS VALVE OF A COMBUSTION ENGINE

The present invention pertains to arrangements for a pre-chamber of a combustion engine as well as pre-chambers comprising such arrangements, in particular to avoid or impair backfiring or flashbacks of a combustible mixture and/or to enable a flame retardation within a respective pre-chamber. Accordingly, an arrangement for a pre-chamber gas valve of a combustion engine, preferably a gas engine, is suggested, which comprises a housing having an outer surface and comprising a channel, wherein a first end of the channel is in fluid communication with the outer surface and a second end of the channel is connectable to a valve seat of the pre-chamber gas valve. The arrangement furthermore comprises a plurality of protrusions extending radially outward from the outer surface of the housing. The first end of the channel is arranged upstream of the second end of the channel and downstream of the protrusions, wherein the protrusions are spaced apart from each other in a circumferential direction and define a respective cavity between respective adjacent protrusions, each cavity having an extension being larger in a radial direction and/or axial direction than an extension in the circumferential direction.