Sensor and method for determining the air ratio of a fuel gas/air mixture
US10545127B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2017 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Nov 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/068
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor for determining an air ratio of a fuel gas/air mixture, wherein a housing is formed, which delimitates a measuring space. The housing has on one side a diffusion passage for coupling with a fuel gas/air mixture flow, wherein the diffusion passage is formed by a gas-permeable separating agent. An electrically operated excitation element is arranged for energy supply into the measuring space in order to induce a chemical reaction of a fuel gas/air mixture in the measuring space. At least one optical detection device is directed into the measuring space with its detection area, wherein the at least one optical detection device detects the intensity of radiation from the reaction position in at least a first wavelength range and produces a signal being allocated to the detected intensity, from which the air ratio is inferable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.