Gaseous fuel-air mixer with higher mixture uniformity

A gaseous fuel-air mixer comprising:

• an outer shell comprising:
• an air intake defining an air intake center axis and configured to receive air, the air intake having an air outlet, and
• a fuel intake comprising:
• a fuel inlet centered on a fuel intake center axis and configured to receive fuel, and
• a fuel intake body that extends from the fuel inlet towards the air intake center axis, the fuel intake body defining a fuel intake collecting wall and a fuel intake concentrating wall;
• an inner shell comprising an inner shell intake configured to separately receive the air from the air outlet and the fuel from the fuel intake and to provide a gaseous fuel-air mixture, the inner shell cooperating with the outer shell to define a fuel intake collecting chamber configured to receive the fuel from the fuel inlet and a fuel intake concentrating chamber configured to receive the fuel from the fuel intake collecting chamber and provide the fuel to the inner shell intake;
• and
• at least one fuel chamber rib coupled to the fuel intake concentrating wall and positioned away from the fuel intake collecting wall.