Patent ID: 11898522
Assignee: HONDA MOTOR CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. An intake manifold for an internal combustion engine, comprising:
a plenum including an inlet opening;
a plurality of runners, each of the runners extends from the plenum and includes a first end opened to the plenum and a second end configured to be connected to the internal combustion engine, each of the runners incudes an outer surface; and
a ventilation chamber, the ventilation chamber protrudes from and extends along each of the runners, the ventilation chamber includes,
a bottom surface that includes a plurality of valleys and a plurality of peaks, each of the valleys is located between a respective pair of the peaks,
a plurality of ports, each of the ports is located on a respective one of the peaks and opens into a respective one of the runners, and
a labyrinth extending across the ventilation chamber, the peaks and the valleys forming a portion of the labyrinth, the labyrinth configured to cause fluid entering the ventilation chamber from the inlet to move in a non-linear path within the ventilation chamber.