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US 2003/0188969 A1Published application
Gas sensor incorporating a multilayered gas sensing element
AssigneeDenso Corporation
InventorsShinichiro Imamura, Susumu Naito, Makoto Nakae, Namitsugu Fujii
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Abstract
A multilayered gas sensing element 2 is positioned in a cylindrical housing 10 via a cylindrical insulator 3. The multilayered gas sensing element 2 includes a narrow-width portion 21 and a wide-width portion 22. The wide-width portion 22 is in a fixed relationship with respect to the insulator 3. The narrow-width portion 21 is in a floating relationship with respect to the insulator 3. The narrow-width portion 21 has a gas sensing portion for detecting the concentration of a specific gas contained in a measuring objective gas.
Claims5
A gas sensor comprising:
- a cylindrical housing, and a multilayered gas sensing element positioned at a predetermined position in said housing via a cylindrical insulator, wherein
- said multilayered gas sensing element comprises a narrow-width portion and a wide-width portion, with a width of said narrow-width portion being shorter than a width of said wide-width portion;
- said wide-width portion is in a fixed relationship with respect to said insulator;
- and
- said narrow-width portion is in a floating relationship with respect to said insulator, and has a gas sensing portion for detecting the concentration of a specific gas contained in a measuring objective gas.
2 more elements
Dependencies are inferred from the claim text.