Exhaust purification system of internal combustion engine
US11274585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2020 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Jun 6, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust purification system includes an electrochemical reactor provided in an engine exhaust passage; a bypass passage bypassing the electrochemical reactor; a flow control valve controlling an amount of exhaust gas, discharged from an engine body, flowing into the electrochemical reactor and the bypass passage; and a control device controlling the flow control valve. The electrochemical reactor includes a holding material holding NOX or HC and is configured so as to purify NOX or HC held at the holding material if energized. The control device controls the flow control valve so as to control the amount of exhaust gas flowing into the electrochemical reactor so that a temperature of the electrochemical reactor is maintained at less than a desorption start temperature where NOX or HC starts to be desorbed from the holding material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.