Electrode structure for particulate matter sensor
US7966862B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2008 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Apr 29, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1444
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A particulate matter detector formed in an insulated device such as a spark plug. The insulated device has a center electrode having a first end and a second end. The first end of the center electrode passes through the insulated device and may be connected to a terminal. The second end of the electrode is formed to provide a greater surface area. The form may be a star, circle, series of S's or a helix to increase the surface area of the second end of the center electrode that may be exposed to the exhaust from an engine. The sensor may be used to measure particulate matter in the exhaust of an engine and permit a processor to regulate the operation of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.