| 摘要 |
PROBLEM TO BE SOLVED: To accelerate a flow velocity at a suction port in an engine intake structure at low cost.SOLUTION: A spacer 10 disposed between a cylinder head 110 and an intake manifold 120 includes a body part formed with a flow passage 11 for introducing air to the cylinder head 110 from the intake manifold 120. The flow passage 11 has an inner diameter W1 of an opening 11a near the intake manifold 120 which is larger than an inner diameter W2 of an opening 11b near the cylinder head 110.SELECTED DRAWING: Figure 1 |
