Catalytic converter
US5888456A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A catalytic converter includes a housing, a honeycomb heater fixed to inside the housing, and a catalytic element disposed downstream of the honeycomb heater. The honeycomb heater has a first honeycomb structure made of metal having a first partition wall having a plurality of first throughholes, and at least one electrode for electrifying the first honeycomb structure. The catalytic element fixed to inside the housing and disposed downstream of the honeycomb heater has a second honeycomb structure having a second partition wall having a plurality of second throughholes, and a catalytic compound loaded on the second honeycomb structure. A horizontal cross-section of the honeycomb structure is made smaller than that of the honeycomb structure. Further, a gap between an outflow end surface of the honeycomb structure and an inflow end surface of the honeycomb structure is made large. According to the catalytic converter, a durability of a honeycomb structure, particularly resistance against vibrations extending over a long period of time can be improved while maintaining an exhaust gas purification ability under severe driving conditions. Further, according to the present invention, t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.