Self-relieving choke valve system for a combustion engine carburetor
US6851664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2003 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | May 15, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M1/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A self-relieving choke valve system for a carburetor of a combustion engine automatically opens a choke valve after a successful engine start up and permits the choke valve to automatically close when the engine is shut down. The self-relieving choke valve system is preferably passive in nature and preferably self contained to the carburetor. It has a vacuum motor which preferably receives a vacuum signal from a vacuum source derived from the operating engine to open the choke valve. A lost motion linkage of the self-relieving choke valve system permits the choke valve to fluctuate between a closed position and a slightly open engine start up position without any intervention by the vacuum motor while the engine is being started.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.