Intake pipe

An intake pipe for an internal combustion engine including a compressor, the intake pipe comprising:

• a pipe body including an intake passage therein, wherein the pipe body includes a passage wall part, and a recess extending from the passage wall part that is open to the intake passage;
• wherein the recess includes:
• a front wall;
• a plurality of side walls extending between the passage wall part and the front wall;
• and
• a depth extending from the intake passage to the front wall, wherein the depth gradually decreases toward a downstream side of the recess so that the front wall smoothly transitions into the passage wall part;
• and
• an ejector part including an air inlet, a vapor inlet, and an outlet pipe part in communication with each other, wherein the air inlet and the outlet pipe part are aligned along a common axis;
• wherein the ejector part is configured to generate a negative pressure in response to a flow of a compressed air supplied from the compressor to the ejector part through the air inlet,
• wherein the ejector part is configured to suction fuel vapor in a fuel tank through the vapor inlet in response to the negative pressure,
• wherein the ejector part is configured to discharge a mixture of the compressed air and the fuel vapor into the intake passage via the outlet pipe part;
• wherein the passage wall part is formed with the ejector part as a monolithic, single-piece;
• and
• wherein the outlet pipe part is disposed in the recess and extends in a discharge direction of the mixture from the ejector part.