An adaptor socket (22) for connecting a gaseous fuel injector (24) to a port (4) in an intake manifold or flange (2) of an internal combustion engine, said socket being adapted to fit said port (4) and having a mounting aperture (31) for mounting a gaseous...

An air/fuel mixing device (1) for a gaseous fuel internal combustion engine, having a main body (2) defining a mixing chamber (4) connected in series with an intake manifold of the engine; an annular supply chamber (27) coaxial with the mixing chamber (4) ...