Support structure for intake manifold

A support structure for an intake manifold, the support structure comprising:

• a cylinder head;
• and
• a fixing structure, the support structure supporting the intake manifold, wherein
• an axial length direction of a crankshaft center is defined as a left-right direction,
• a horizontal direction orthogonal to the left-right direction is defined as a front-rear direction,
• one side in the front-rear direction is defined as a front side,
• the intake manifold includes a collector including a synthetic resin, the intake manifold including a plurality of branch pipes led out to the front side from the collector,
• an intake outlet at a front end of each of the branch pipes is supported by the cylinder head,
• the collector is elastically supported by the fixing structure via a pair of coupling plates having an identical isosceles triangle shape,
• a throttle body is attached to a left or right end of the collector, the left or right end being opposite to a side supported by the fixing structure,
• the fixing structure is disposed below the intake manifold,
• the collector includes a supported portion at a lower portion of the collector,
• the fixing structure includes a supporting portion protruding upward from an upper side of the fixing structure,
• the supported portion of the collector is supported by the supporting portion of the fixing structure,
• the supporting portion and the supported portion of the collector are coupled via an elastic coupling body,
• the elastic coupling body includes a pair of coupling plates that sandwiches the supporting portion and the supported portion from both sides, a pair of fasteners that attaches the pair of coupling plates to the supporting portion and the supported portion, and a knock pin that is attached to either the supporting portion or the supported portion,
• the knock pin is inserted into the pair of coupling plates,
• an elastic collar is attached to at least one fastener of the pair of fasteners, and
• the supported portion of the collector is elastically supported by the supporting portion of the fixing structure via the pair of fasteners and the elastic collar positioned by the knock pin.