| 摘要 |
An improved structure of a gas sensor is provided which may be employed in an oxygen measuring device of an air-fuel ratio control system measuring an oxygen content in exhaust gasses of an internal combustion engine of automotive vehicles. The structure includes a holding mechanism disposed within an air cover installed on an end of a sensor housing to cover a base of a gas-sensing element. The holding mechanism is made of a spring member or a rigid member to retain an insulation porcelain within the air cover elastically or rigidly. The use of the holding mechanism provides for ease of installation of the insulation porcelain, results in an increase in durability of the gas sensor, and allows the overall size of the gas sensor to be decreased.
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