Assembling structure for intake manifold
An assembling structure for an intake manifold includes: a first downstream portion; a second downstream portion; an upstream portion; a connecting member that connects the first downstream portion and the second downstream portion with each other; and a plate-shaped stay. The connecting member is fixed to the first downstream portion and the second downstream portion by a bolt, and an other member that is a member other than the intake manifold is fixed to the intake manifold through the stay at least either between the connecting member and the first downstream portion, or between the connecting member and the second downstream portion.
1. An assembling structure for an intake manifold that is provided between a first cylinder head on a first bank-side and a second cylinder head on a second bank-side in a V-shaped internal combustion engine and is configured to supply intake air from outside to a first suction port of the first cylinder head and a second suction port of the second cylinder head, the assembling structure comprising:
a first downstream portion including a first downstream passage connected with the first suction port, the first downstream portion being connected with the first cylinder head;
a second downstream portion including a second downstream passage connected with the second suction port, the second downstream portion being connected with the second cylinder head;
an upstream portion including a first upstream passage and a second upstream passage, the upstream portion being connected with upstream sides of the first downstream portion and the second downstream portion in an intake airflow direction, the first upstream passage communicating with the first downstream passage, the second upstream passage communicating with the second downstream passage;
a connecting member that connects the first downstream portion and the second downstream portion with each other; and
a plate-shaped stay, wherein
the connecting member is fixed to the first downstream portion and the second downstream portion by a bolt, and
an other member that is a member other than the intake manifold is fixed to the intake manifold through the stay at least either between the connecting member and the first downstream portion, or between the connecting member and the second downstream portion.
2. The assembling structure according to claim 1 wherein
the stay includes a first stay and a second stay,
the connecting member and the first downstream portion are fixed to each other at a plurality of places, the connecting member and the second downstream portion are fixed to each other at a plurality of places,
the first stay is interposed at one of the fixed places between the connecting member and the first downstream portion, and
the second stay is interposed at the fixed place between the connecting member and the second downstream portion, and the second stay is disposed at the fixed place that is the farthest from the first stay.
3. The assembling structure according to claim 1 , wherein:
a material of the first downstream portion and the second downstream portion has higher rigidity than that of a material of the upstream portion; and
a material of the connecting member is the same as the material of the first downstream portion and the second downstream portion.
4. The assembling structure according to claim 1 , wherein the other member is a purge pipe that introduces evaporated fuel to an intake system of the internal combustion engine.
5. The assembling structure according to claim 1 , wherein the upstream side in the intake airflow direction is one side of a thickness direction of the intake manifold.