Valve for adding extra air in an internal combustion engine
US4122806A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Mar 10, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/19
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve arrangement for adding air to the intake line of an internal combustion engine, particularly Otto-cycle engines, during the deceleration of the engine. A diaphragm which is controlled by intake pipe pressure, acts against the force of a spring and is located within a dosing or metering unit so as to divide the unit into two chambers. The diaphragm actuates the valve via a rod, and the two chambers are connected through a calibration and a check valve. The upper chamber can be vented through a bore or opening by means of a second diaphragm which is controlled by the intake pipe pressure and acts against the force of a spring. A barometer bellows determines the preload of the spring through a disc and a rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.