Exhaust purification system of internal combustion engine
US11208936B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2020 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Jul 2, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust purification system of an internal combustion engine comprises a filter 23 arranged in an exhaust passage 23 of an internal combustion engine in which a plurality of cylinders 61, 62, 63, 64 cooled by cooling water are provided and trapping particulate matter in exhaust gas, a wall temperature calculation part 51 configured to calculate or detect wall temperatures of a predetermined number of equal to or more than two cylinders among the plurality of cylinders, and a PM amount calculation part 52 configured to calculate an amount of particulate matter discharged from the plurality of cylinders to the exhaust passage based on the wall temperatures calculated or detected by the wall temperature calculation part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.