Carburetor arrangement

Details Carburetor arrangement Carburetor arrangement

2005-07-05

2005-07-05

Chiesa, Richard L. (Department: 1724)

Gas and liquid contact apparatus

Fluid distribution

Pumping

C261S052000, C261S069100, C261S072100, C261SDIG006

Reexamination Certificate

active

06913250

ABSTRACT:
A carburetor arrangement for an internal combustion engine in a manually guided implement, such as a power chainsaw, a cut-off machine, etc. is provided. A regulating chamber delimited by a regulating diaphragm is provided. Upon deflection of the diaphragm due to underpressure in the regulating chamber, the latter is connected with a fuel tank. Via at least one nozzle, the regulating chamber opens into an air channel that supplies fuel/air mixture to the engine. The carburetor arrangement includes a scavenging pump that is disposed in a return line from the regulating chamber to the fuel tank, and in which is formed a pump chamber. The scavenging pump serves to completely fill the regulating chamber with fuel before start-up of the engine. To prevent the fuel/air mixture from becoming too lean after start-up, especially upon opening of the choke valve, a supply line is provided from the pump chamber into the air channel and supplies additional fuel to the air channel during the run-up phase.

REFERENCES:
patent: 2998232 (1961-08-01), Mennesson
patent: 3743254 (1973-07-01), Tuckey
patent: 3843755 (1974-10-01), Tuckey
patent: 4824613 (1989-04-01), Scott et al.
patent: 4936267 (1990-06-01), Gerhardy et al.
patent: 5241931 (1993-09-01), Radel
patent: 5283013 (1994-02-01), Gerhardy
patent: 5341776 (1994-08-01), Phelps
patent: 5743240 (1998-04-01), Zerrer et al.
patent: 5891369 (1999-04-01), Tuggle et al.
patent: 6079697 (2000-06-01), Tuggle et al.
patent: 6354571 (2002-03-01), Gerhardy
patent: 6425573 (2002-07-01), Suzuki
patent: 6446939 (2002-09-01), Hoppe et al.
patent: 6481403 (2002-11-01), Ashcraft et al.
patent: 6523809 (2003-02-01), Woody
patent: 6595500 (2003-07-01), Osburg et al.
patent: 6676114 (2004-01-01), Gerhardy
patent: 0786591 (1997-07-01), None
patent: 4-339161 (1992-11-01), None

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