Fuel injection valve
AssigneeDenso Corporation
InventorsTsukasa YAMASHITA, Kazufumi SERIZAWA, Shinji ONISHI, Daisuke ITOMURA
Life of this patent
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Abstract
A fuel injection valve includes a body that includes an injection hole through which fuel is injected, and a valve element that opens or closes the injection hole. The body includes a metallic base material configured to form the injection hole, a corrosion-resistant layer covering a surface of at least a part of the base material that forms the injection hole and being made of a less corrosive material than the base material, and a diffusion deterring layer located between the base material and the corrosion-resistant layer and made of a material that less easily allows a metal component of the base material to diffuse than the material of the corrosion-resistant layer.
Claims9
A fuel injection valve comprising:
- a body that includes an injection hole through which fuel is injected;
- and
- a valve element that opens or closes the injection hole, wherein the body includes:
- a metallic base material configured to form the injection hole;
- a corrosion-resistant layer covering a surface of at least a part of the base material that forms the injection hole and being made of a less corrosive material than the base material;
- and
- a diffusion deterring layer located between the base material and the corrosion-resistant layer and made of a material that less easily allows a metal component of the base material to diffuse than the material of the corrosion-resistant layer.
Dependencies are inferred from the claim text.