Catalyst deterioration detector and method of detecting deterioration of catalyst
US6401450B1 · kind B1 · utility
9Cited by
16References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A catalyst deterioration detector detects the deterioration of a catalytic device that is disposed in an exhaust passage of an internal combustion engine, adsorbs hydrocarbons and oxidizes the hydrocarbons at a temperature equal to or higher than an activation temperature thereof. The catalyst deterioration detector includes an adsorption detector that detects a degree of adsorption of hydrocarbons by the catalytic device and a controller that determines deterioration of the catalytic device according to the degree of adsorption of hydrocarbons by the catalytic device as detected by the adsorption detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.