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US 2014/0174401 A1Published application
Vortex generator device
AssigneeDenso Corporation
InventorHiroaki Hattori
Life of this patent
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Abstract
A plate-shaped butterfly valve is rotatable to throttle intake airflow, which is to be drawn into an internal combustion engine, and to direct the intake airflow toward a specific periphery in a cross section of a passage. The passage has a passage wall defining a passage wall step. The passage wall step is located on the downstream side from a rotation locus of the butterfly valve relative to intake airflow. The passage wall step has a raised side and a depressed side, which are located on the downstream side and on the upstream side, respectively, relative to intake airflow.
Claims6
A vortex generator device comprising:
- a butterfly valve in a plate shape, the butterfly valve configured to rotate to throttle an intake airflow, which is to be drawn into an internal combustion engine, toward a specific periphery in a passage cross section;
- and
- a passage wall step formed in a passage wall, which defines a passage of intake air, wherein
- the passage wall step is located on a downstream side from a rotation locus of the butterfly valve relative to intake airflow, and
- the passage wall step has a raised side and a depressed side, which are located on a downstream side and on an upstream side, respectively, relative to intake airflow.
2 more elements
Dependencies are inferred from the claim text.