Insulated exhaust manifold
US4182122A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1978 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Feb 15, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N13/141
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust manifold for an internal combustion engine is provided with internal insulation so as to maintain the outside skin temperature preferably below 450.degree. F. The manifold is provided with an exhaust conduit or lining that is comprised of interfitting relatively axially movable sections in contact with the exhaust gases. A low specific gravity or porous sleeve of insulating material is fitted in slightly spaced relationship around the exhaust conduit. The sleeve of insulating material may be wrapped to prevent the metal of the outer cast manifold housing from penetrating the insulation. Each section of the exhaust conduit has a branch for connection to a flanged nipple which is permitted some limited movement relative to the manifold housing when connected to the exhaust ports of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.