Ngk Spark Plug Company, Limited

Norimichi Saito

Tatsuya Suzuki

Go Hanzawa

Takeshi Morita

Mitsunori Oi

Takashi Maeda

Toshinori Nishi

A temperature sensor including a temperature sensing element () having a temperature sensing unit () and a pair of device electrode wires () extending from the temperature sensing unit; a sheath member () including a sheath wire () connected at a junction () to one of the device electrode wires and a sheath outer pipe () retaining the sheath wire in an insulating material (); an inner tube () which has a bottomed cylindrical shape, the inner tube accommodating the temperature sensing element and the junction in a bottom portion side of the inner tube serving as a leading end of the temperature sensor, and extending in an extension direction of the device electrode wire and the sheath wire; and an outer tube () which has a bottomed cylindrical shape including a gas inlet hole (), the outer tube covering the inner tube, and being spaced, from the inner tube on a leading end side of the junction when viewed in a direction perpendicular to an axial direction of the inner tube.

Temperature sensor

A temperature sensor including: a temperature sensing element () having a temperature sensing unit () and a pair of device electrode wires (); a sheath member () having a sheath wire () connected at a junction () to at least one of the device electrode wires and a sheath outer pipe () retaining the sheath wire in an insulating material (); an inner tube () which has a bottomed cylindrical shape; and a cylindrical outer tube () having an open end, covering the inner tube such that the open end is located at a front end side of the junction and in a region to the rear end side of or aligned with the front end of the inner tube, and being spaced from the inner tube at the front end side of the junction.

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Aichi, Japan

Norimichi Saito