Sensor
US10364730B2 · kind B2 · utility
0Cited by
19References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2015 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Feb 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The PM sensor includes: a filter member having a plurality of measuring cells which are defined by a porous partition wall and configured to trap particulate matter in exhaust gas; at least a pair of electrode members which are disposed to face each other with the measuring cell sandwiched therebetween to form a condenser; a heater member which heats the measuring cell to burn and remove particulate matter accumulated in the measuring cell; and an estimation unit which estimates an amount of the particulate matter contained in the exhaust gas based on an electrostatic capacity between the pair of electrode members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.