Carburetor for an internal combustion engine
US4578228A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1984 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Nov 1, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/68
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A carburetor for small motors has a housing with a carburetor bore wherein air and fuel are mixed to an air fuel mixture. The fuel enters the carburetor bore through fuel jets. A throttle valve is pivotally mounted in the carburetor bore by means of which the fuel-air mixture quantity is adjusted in dependence upon the operating condition of the engine. The throttle valve and the inner wall surface of the carburetor bore conjointly define an air gap in the idling position. An idling fuel outlet jet communicates with the carburetor bore in the region of this air gap and is connected to the control chamber containing the fuel. The idling fuel outlet jet together with a ventilation bore communicate with an emulsion chamber of the control compartment. Further, an idling control part is provided which is movable into the air gap whereby an outlet opening of the ventilation bore communicating with the emulsion chamber is passed over. In this way, the ratio of fuel to air in the emulsion chamber can be adapted to the air requirements when flowing into the carburetor bore from the outlet jet. By means of a change of the free cross-sectional opening of the ventilation jet occurring simultan…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.