Ngk Spark Plug Company, Limited

Ayaka Ota

Yasuhiro Ishiguro

Kouji Ogawa

Hideya Inukai

A sensor including a sensor element, a metallic shell, a terminal fitting, a cylindrical case, lead wires, a connector portion, and a cylindrical heat shield tube. The heat shield tube includes a first tube and a second tube. The second tube is disposed on a distal end side of the first tube and covers an outer surface of the rear end side of the case, while providing an overlapping portion that overlaps the first tube. A rear end side of the first tube is adjacent to the connector portion. A total length T of the heat shield tube and a length S of the overlapping portion satisfy T/10&#x2264;S&#x2264;T/5. Further, a length Lof the first tube and a length Lof the second tube satisfy T/2&#x2264;L&#x3c;L

Growing community of inventors

Nagoya, Japan

Ayaka Ota