Seal arrangement for a sensing element of a gas sensor
US6206377A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Mar 31, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/943
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A seal arrangement for a sensing element of a gas sensor, in particular for determining the oxygen content in exhaust gases of internal combustion engines, includes a packet made up of several seal elements, packed one on top of another, which immobilize the sensing element in a longitudinal bore of a metallic probe housing. A funnel-shaped diversion element lying in the axial direction of the sensor is integrated into the seal elements packed one above another in such a way that gas permeability between the diversion element and the inner wall of the probe housing is ensured. Toward the measured-gas end of the sensor, a small gap remains open between the sensing element and the diversion element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.