Air-fuel ratio detecting apparatus
US4300991A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Jun 11, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1494
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air-fuel ratio detecting apparatus, comprises a first pair of electrodes, interposing a porous solid electrolyte therebetween, a second pair of electrodes, interposing a porous solid electrolyte therebetween, a dense solid electrolyte to which one of the first pair of electrodes and one of the second pair of electrodes contact, and a device for causing constant-currents to flow through the first and second pairs of electrodes, respectively, so as to detect voltage developed between the electrodes contacting with the dense solid electrolyte, thereby for obtaining air-fuel ratio detecting apparatus having uniform voltage output characteristics even by mass production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.