Means for supplying a secondary air in an internal combustion engine which is provided with a turbo charger
US4534173A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1982 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Oct 19, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An internal combustion engine having a supercharger utilizes a secondary air supply control system for purifying exhaust gas. A secondary air supply passage with a reservoir chamber is provided in the middle of an intake passage communicating with an exhaust gas passage. A check valve prevents the back flow of exhaust gas in the middle of the secondary air supply passage. The secondary air passage in another embodiment has the intake passage downstream of a compressor or reservoir chamber in communication with the exhaust passage. A suitable amount of air is supplied into the exhaust passage from the intake passage or reservoir, at high pressure via the secondary air passage and check valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.