发明授权
US07171934B2 Intake manifold 有权
进气歧管

Intake manifold
摘要:
In a branch pipe of an intake manifold, portion c in the central part is kept at relatively small constant inner diameter for an interval C, and portion e of which an end is connected to the surge tank is kept at relatively large constant inner diameter for an interval E, whereby the volumetric efficiency at the time of medium speed and high speed of engine is excellent.
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