Intake apparatus of V-type internal combustion engine

An intake apparatus of a V-type internal combustion engine including first cylinders arranged along a first direction in a first bank and second cylinders arranged along the first direction in a second bank, the intake apparatus comprising:

• a surge tank provided above the first bank and the second bank in a height direction of the V-type internal combustion engine and comprising:
• a first end;
• a second end opposite to the first end in the first direction;
• an upper wall;
• a lower wall opposite to the upper wall in the height direction;
• an air inlet provided in the first end;
• first air outlets arranged along the first direction in the lower wall, the first air outlets including a closest first air outlet closest to the air inlet among the first air outlets;
• and
• second air outlets arranged along the first direction in the lower wall, the second air outlets including a closest second air outlet closest to the air inlet among the second air outlets;
• an intake path connected to the air inlet;
• first branch paths connecting the first air outlets to the first cylinders, respectively;
• second branch paths connecting the second air outlets to the second cylinders, respectively;
• and
• a protrusion provided on the lower wall to protrude toward the upper wall between the closest first air outlet and the closest second air outlet so as to suppress air flows output from the closest first air outlet and the closest second air outlet, the protrusion extends to a height above a portion of each of the closest first air outlet and the closest second air outlet.

An intake apparatus of a V-type internal combustion engine including first cylinders arranged along a first direction in a first bank and second cylinders arranged along the first direction in a second bank, the intake apparatus comprising:

• a surge tank provided above the first bank and the second bank in a height direction of the V-type internal combustion engine and comprising:
• a first end;
• a second end opposite to the first end in the first direction;
• an upper wall;
• a lower wall opposite to the upper wall in the height direction;
• an air inlet provided in the first end;
• first air outlets arranged along the first direction in the lower wall, the first air outlets including a closest first air outlet closest to the air inlet among the first air outlets;
• and
• second air outlets arranged along the first direction in the lower wall, the second air outlets including a closest second air outlet closest to the air inlet among the second air outlets;
• an intake path connected to the air inlet;
• first branch paths connecting the first air outlets to the first cylinders, respectively;
• second branch paths connecting the second air outlets to the second cylinders, respectively;
• and
• a protrusion protruding toward the upper wall between the closest first air outlet and the closest second air outlet so as to suppress air flows output from the closest first air outlet and the closest second air outlet, the protrusion being a part of the lower wall, the protrusion extends to a height above a portion of each of the closest first air outlet and the closest second air outlet.