Vehicle drain hole structure
AssigneeHonda Motor Co., Ltd.
InventorRaymond Khouw
Life of this patent
Estimating the term…
Abstract
A vehicle drain hole structure includes an enclosure (e.g., an air intake tube, an intake enclosure, a resonator, a cleaner, etc.) defined by at least one wall. The at least one wall has an inner surface and an outer surface. A drain hole is defined in the at least one wall for providing drainage from the enclosure. The drain hole extends from a first end defined in the inner surface to a second end defined in the outer surface. The first end of the drain hole at the inner surface has a larger cross-sectional area than the second end of the drain hole at the exterior surface to reduce the likelihood of a liquid film forming across the drain hole.
Claims18
A vehicle drain hole structure, comprising:
- a vehicle enclosure defined by at least one wall, said at least one wall having an inner surface generally facing upward and an outer surface that is opposite the inner surface and generally facing downward;
- said inner surface defining a fluid passageway that is an air intake passage of an internal combustion engine;
- and
- a drain hole defined in said at least one wall for providing drainage from said enclosure, said drain hole extending from a first end defined in said inner surface to a second end defined in said outer surface, said first end of said drain hole at said inner surface having a larger cross-sectional area than said second end of said drain hole at said exterior surface to reduce the likelihood of a liquid film forming across said drain hole.
A drain structure for an air passageway of a vehicle, comprising:
- a wall defining the air passageway of the vehicle, the wall having an inner surface defining the air passageway and an outer surface that is opposite the inner surface;
- and
- an aperture defined through said wall for draining moisture from the air passageway, said aperture defined by a first opening in said inner surface, a second, smaller opening in said outer surface and a wall tapering and narrowing from said first opening in said inner surface toward said second, smaller opening in said outer surface to reduce surface tension which would otherwise tend to cause a liquid film to form across said aperture, wherein said air passageway is an air intake passage of an internal combustion engine disposed upstream of an air precleaner, said precleaner fluidly connected to an engine intake manifold by an intake manifold tube.
A drain structure for an air intake passageway, comprising:
- an air intake tube defining the air intake passageway in a vehicle, the air intake tube disposed upstream of an engine intake manifold;
- a drain aperture disposed along said air intake tube for draining moisture therefrom, a first end of said drain aperture includes a first opening defined in an inner surface of said air intake tube and a second end of said drain aperture includes a second opening defined in an outer surface of said air intake tube, said first opening having a larger cross-sectional area than said second opening to reduce surface tension which would otherwise tend to cause a liquid film to form across said drain aperture as moisture is drained from said air intake tube.
Dependencies are inferred from the claim text.