Abstract: In one aspect a mixing tube is provided for the introduction of a flow of exhaust gas into a flow of intake air of an internal combustion engine. The mixing tube comprises an opening, tube section, and a plurality of tube ports. The opening is configured to receive the flow of exhaust gas. The tube section is fluidly connected to the opening and extends into the flow of intake air. The tube ports on the tube section are located in low static pressure regions that are determined as intake air passes around the tube section.

Abstract: In one aspect a mixing tube is provided for the introduction of a flow of exhaust gas into a flow of intake air of an internal combustion engine. The mixing tube comprises an opening, tube section, and a plurality of tube ports. The opening is configured to receive the flow of exhaust gas. The tube section is fluidly connected to the opening and extends into the flow of intake air. The tube ports on the tube section are located in low static pressure regions that are determined as intake air passes around the tube section.

Abstract: A toy for throwing, bouncing, and catching has a cylindrical padded hand gripped rod, which extends at each end to and partially into respective high bounce balls. The balls each have a cylindrical recess with a respective clearance tapered entry, formed from a previous spherical portion of a high bounce ball, or so directly formed upon molding the initial form of the respective high bounce ball. Such clearance tapered entry of each high bounce ball improves the recovery of each ball during and after being impacted under striking load conditions, and thereby improves the longevity of the high bounce balls and the overall toy. A padded sleeve conforming to the hand gripped cylindrical rod has tapered ends to also provide clearances, where the padded hand gripped rod meets the high bounce balls, to likewise improve the longevity of the overall toy.