Exhaust gas purification device for a compression-ignition combustion engine
US5930995A · kind A · utility
25Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1997 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Aug 6, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust gas purification device of a compression-ignition combustion engine comprises exhaust branch passages each being connected to a corresponding cylinder of the engine at one end thereof and connected to a common exhaust passage at the other end thereof, and a filter arranged in at least one of the exhaust branch passages to trap particulates in the exhaust gas discharged from the engine. Pressure in the exhaust branch passage upstream of the filter is controlled to continuously make the pressure equal to or greater than a pressure in the exhaust branch passage downstream of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.