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1. (WO2017187634) EXHAUST GAS SENSOR MOUNTING STRUCTURE AND METHOD FOR MANUFACTURING EXHAUST GAS SENSOR MOUNTING STRUCTURE

Pub. No.:    WO/2017/187634    International Application No.:    PCT/JP2016/063484
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Fri Apr 29 01:59:59 CEST 2016
IPC: F01N 13/00
F01N 13/08
Applicants: FUTABA INDUSTRIAL CO., LTD.
フタバ産業株式会社
Inventors: SUZUKI, Akihito
鈴木 啓仁
Title: EXHAUST GAS SENSOR MOUNTING STRUCTURE AND METHOD FOR MANUFACTURING EXHAUST GAS SENSOR MOUNTING STRUCTURE
Abstract:
Provided is an exhaust gas sensor mounting structure comprising an exhaust pipe and a holding part. The exhaust pipe forms an exhaust gas flow passage. The holding part has open thereto an exhaust gas sensor through-hole which is a through-hole for holding an exhaust gas sensor for detecting the state of exhaust gas flowing through the exhaust gas flow passage, and the holding part holds the exhaust gas sensor while the exhaust gas sensor is inserted in the exhaust gas sensor through-hole. The holding part has a spherical end section which is a spherically shaped end section. The side surface of the exhaust pipe has open thereto an exhaust pipe through-hole which is a through-hole for providing communication between the exhaust gas sensor through-hole and the exhaust gas flow passage. The exhaust pipe has an affixation section which is located at a position surrounding the exhaust pipe through-hole and to which the holding part is affixed. The outer surface of the affixation section has a spherical shape corresponding to that of the outer surface of the spherical end section. The exhaust pipe and the holding part are welded together while the outer surface of the affixation section and the outer surface of the spherical end section are in contact with each other.