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US 7,458,343 B2Granted
Atmospheric pollutant treatment structure
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsKazuya Tanabe, Takashi Tsutsumizaki, Masaharu Nakamori
Life of this patent
Estimating the term…
Abstract
To allow pollutants contained in atmospheric air to be treated effectively at all times during operation of a vehicle. A catalyst layer for treating atmospheric pollutants is formed on at least a surface of cooling fins provided on a cylinder portion of an engine mounted on a vehicle.
Claims15
An atmospheric pollutant treatment structure comprising:
- a fan for drawing air into a case body of an engine;
- cooling fins for air cooling a cylinder portion of the engine;
- a catalyst layer for treating atmospheric pollutants, said catalyst layer being formed on the cooling fins;
- and
- a shroud provided with an upper portion cover member and a lower portion cover member connected to each other so as to cover in cooperation with each other the cylinder portion and a part of an engine main body to form a cooling air passage;
- a fan cover covering the fan,
- wherein the upper and lower portion cover members are connected to the fan cover at positions forward of a forward-most part of the fan, and
- wherein a forward-most part of the shroud is attached to the cylinder head, and a rear-most part of the shroud is attached to the fan cover at a position forward of a forward-most part of the fan.
5 more elements
An atmospheric pollutant treatment structure comprising:
- a fan for drawing air into a case body of an engine;
- cooling fins for air cooling a cylinder portion of the engine;
- and
- a catalyst layer for treating atmospheric pollutants, said catalyst layer being formed on the cooling fins,
- wherein said cylinder portion and a cylinder head are covered with a shroud, the shroud forming a cooling air passage,
- wherein a forward-most part of the shroud is attached to the cylinder head, and a rear-most part of the shroud is attached to a fan cover at a position forward of a forward-most part of the fan, and
- wherein an ignition plug projects from a side of the cylinder head and into a portion of the cooling air passage adjacent to the fan.
4 more elements
An atmospheric pollutant treatment structure comprising:
- a fan for drawing air into a case body of an engine;
- a fan cover covering the fan;
- cooling fins for air cooling a cylinder portion of an engine;
- and
- a catalyst layer for treating atmospheric pollutants, said catalyst layer being formed on the cooling fins,
- wherein said cylinder portion and a cylinder head are covered with a shroud, the shroud forming a cooling air passage,
- wherein a forward-most part of the shroud is attached to the cylinder head, and a rear-most part of the shroud is attached to the fan cover at a position forward of a forward-most part of the fan, and
- wherein the cooling fins are provided with a plurality of circular-shaped through holes.
5 more elements
An atmospheric pollutant treatment structure comprising:
- a fan for drawing air into a case body of an engine;
- cooling fins for air cooling a cylinder portion of the engine;
- and
- a catalyst layer for treating atmospheric pollutants, said catalyst layer being formed on the cooling fins,
- wherein said cylinder portion and a cylinder head are covered with a shroud, the shroud forming a cooling air passage,
- wherein a forward-most part of the shroud is attached to the cylinder head, and a rear-most part of the shroud is attached to a fan cover at a position forward of a forward-most part of the fan, and
- wherein an ignition plug projects from a side of the cylinder head and into a portion of the cooling air passage adjacent to the fan, and
- wherein edges of the cooling fins are provided with a plurality of cutouts.
5 more elements
Dependencies are inferred from the claim text.