Secondary air introducing apparatus for internal combustion engine
US4433541A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1982 |
| Grant date | Feb 28, 1984 |
| Priority date | — |
| Expiry date | Jun 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A secondary air introducing apparatus for introducing secondary air into the exhaust manifold of an internal combustion engine. The apparatus includes a secondary air introducing passage connected between the air cleaner and the exhaust manifold of the engine, a check valve in the passage arranged to operate in response to pulsation pressure in the exhaust manifold to supply clean secondary air thereto, a first expansion chamber interposed in the passage on an upstream side of the check valve, and a second expansion chamber interposed in the passage on an upstream side of the first chamber. At least the check valve and the first chamber are fixedly mounted on the intake manifold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.