Structure of gas sensor
US6658918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Jun 19, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/407
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.