Circuit for an NOx measurement sensor
US6300754A · kind A · utility
1Cited by
1References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2000 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Feb 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/419
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The pump currents in an NOx measurement sensor are generated by voltage-controlled current sources. Instead of the respective pump current, a setting voltage received by the voltage-controlled current sources occurs as the feedback variable in a respective control loop, so that a current measurement can be dispensed with.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.