Oxygen sensor with a heater
US5804050A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Jun 4, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/407
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A shaft-like heating member is inserted into and fixed to an oxygen sensing element of a hollowed shaft-like member, together with of a terminal member. A heating portion is located at a portion of the heating member closer to the extreme end thereof. The surface of the heating portion is resiliently pressed on the element inner wall in a side-abutting fashion. In this case, a guide mainly gives rise to the elastic force. With such a side-abutting structure, heat generated in the heating portion is directly transferred to the oxygen sensing element, and heats it. Heat radiated from a portion in the vicinity of its contact position additively heats the oxygen sensing element. Temperature of the oxygen sensor quickly reaches an activation temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.