Work vehicle
An air supply pipe includes a curved pipe portion having a first end and a second end, a first straight pipe portion extended along a first direction and a second straight pipe portion extended along a second direction. The cross-sectional shape of the curved pipe portion is a rectangular shape having longer sides in a third direction.
1. An air supply pipe comprising:
a curved pipe portion formed in a tubular shape, the curved pipe portion including a first end, a second end and a rectangular pipe portion communicated with the first end and the second end;
a first straight pipe portion formed in a cylindrical shape, the first straight pipe portion having a first outer diameter, the first straight pipe portion extending from the first end along a first direction; and
a second straight pipe portion formed in a cylindrical shape, the second straight pipe portion having a second outer diameter, the second straight pipe portion extending from the second end along a second direction intersecting with the first direction, wherein
a cross-sectional shape of the rectangular pipe portion in a cutting plane perpendicular to a center axis of the curved pipe portion is a rectangular shape having longer sides in a third direction perpendicular to the first direction and the second direction,
an outer edge of the first end viewed from the third direction is bent at a first curvature radius, and
an outer edge of the second end viewed from the third direction is bent at a second curvature radius different from the first curvature radius.
2. The air supply pipe recited in claim 1 , wherein
an outer edge of the rectangular pipe portion viewed from the third direction is linearly extended.
3. The air supply pipe recited in claim 1 , wherein
an inner edge of the curved pipe portion viewed from the third direction is bent at a third curvature radius less than the first curvature radius and the second curvature radius.
4. The air supply pipe recited in claim 3 , wherein
the third curvature radius is greater than or equal to 40% of the second outer diameter.
5. A forced induction compressor comprising:
a compressor housing configured to accommodate a compressor impeller;
an intake pipe configured to feed air into the compressor; and
the air supply pipe recited in claim 1 , wherein
the second straight pipe portion is coupled to the intake pipe.