EGR gas distributor

An EGR gas distributor configured to distribute EGR gas to each of a plurality of branch pipes constituting an intake manifold, the EGR gas distributor comprising:

• a plurality of gas distribution passages arranged side by side to distribute EGR gas to the plurality of branch pipes;
• and
• a gas passage branched off to allow EGR gas to flow to the plurality of gas distribution passages, wherein
• the gas passage includes a plurality of gas passage parts branched off in multiple stages, the gas passage parts including a final-stage gas passage part in communication with the gas distribution passages,
• each of the gas passage parts has a passage cross-section perpendicular to a central axis so that the passage cross-section has a shape including an uppermost vertex and a lowermost vertex when the EGR gas distributor is mounted on the intake manifold,
• the passage cross-section of each of the gas passage parts, except the final-stage gas passage part, changes so that a vertical dimension is gradually longer from a most upstream position to a most downstream position and so that each of the gas passage parts has an inner surface inclined along a longitudinal direction of each of the gas passage parts,
• each of the gas passage parts has an inner wall defining outer shapes of the passage cross-sections and including a valley line,
• the lowermost vertex corresponds to the valley line of the inner wall, and
• when the EGR gas distributor is mounted on the intake manifold, the gas passage parts each have a shape that the valley line of the inner wall is inclined downward in a flowing direction of the EGR gas.