Thermal reactor having collector therein to mix pulsed flows of exhaust and secondary air
US4172362A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | May 6, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust gas purification system for internal combustion engines comprising two exhaust gas passages which are substantially equal in length and each of which has a substantially constant cross-section. A thermal reactor communicates with the exhaust gas passages, and a collector is provided on the open ends of the exhaust gas passages. Since the ignition timing of every cylinder is different from each other, the mass of exhaust gases and the mass of secondary air are ejected from the exhaust passages in different phases. The collector is formed to collect and mix the mass of exhaust gases and the mass of secondary air which are ejected from both of the exhaust gas passages at a different time, and has an outlet for discharging the exhaust gases and the secondary air into the chamber of the thermal reactor with mixing thereof. In order to introduce sufficient amounts of secondary air after the mass of exhaust gas has discharged, each exhaust gas passage is formed with a volume equal to a displacement volume of the cylinder of the engine and less than four times the displacement volume thereof, and has a cross-sectional area less than three times the opening area of the exhaust va…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.