Monolithic catalytic converter for improved thermal performance
US4521532A · kind A · utility
37Cited by
7References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1984 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Apr 23, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24744
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An automobile catalytic converter of extruded ceramic monolithic honeycomb structure for treatment of automotive exhaust gas. The monolithic structure contains longitudinally extended channels formed of thin walls in a periodic pattern of cross sections of different areas to induce different flow velocities of the exhaust gas in the immediate adjacent channels. Temperature gradients thereby produced between the adjacent channels promote heat transfer in the transverse direction of the honeycomb structure to prevent the formation of maximum temperature in each channel at the same longitudinal location of the channel wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.