Exhaust gas cleaning device for internal combustion engine
US4558565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1983 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Mar 15, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust gas cleaning device for collecting and burning off particulates within exhaust gases discharged from an internal combustion engine of an automobile or the like is disclosed. The device comprises a filter member which is disposed in an exhaust gas passage of the engine for collecting particulates within exhaust gases, an electrically heating member which is disposed on or near the upstream end of the filter member for igniting and burning off the collected particulates, a by-pass passage having a flowing resistance smaller than that of the filter member, which is communicated with the upstream side and the downstream side of the filter member for flowing most of the exhaust gases without passing the filter member at the filter member regenerating time, a valve means which is disposed in the by-pass passage for controlling the exhaust gas amount flowing into the by-pass passage and the filter member by opening or closing the by-pass passage and a valve control means which controls the valve opening so as to flow a small amount of exhaust gases enough to supply the most proper amount of oxygen to the filter member for burning off the collected particulates, into the filter …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.