Vacuum accelerator assist module for carburetors

Details Vacuum accelerator assist module for carburetors Vacuum accelerator assist module for carburetors

2008-01-01

2008-08-12

Chiesa, Richard L (Department: 1797)

Gas and liquid contact apparatus

Fluid distribution

Pumping

C261S035000

Reexamination Certificate

active

07410153

ABSTRACT:
An accelerator assist module for carburetors includes two housing halves, a diaphragm and means for biasing the diaphragm. Each housing half includes a peripheral flange, a cavity and a pipe extension. The peripheral flange of each housing half preferably includes means for securing thereof to the opposing housing half. The diaphragm creates a vacuum chamber and a fuel chamber. The means for biasing forces the diaphragm into the fuel chamber. The vacuum chamber communicates with an intake chamber of a carburetor and the fuel chamber communicates with a fuel metering chamber of the carburetor. A vacuum is applied to the diaphragm at engine idle, which overcomes the means for biasing. When a butterfly valve of the carburetor is opened, the vacuum collapses and air inside the fuel cavity is displaced into the fuel metering chamber and fuel into the intake chamber to increase engine speed.

REFERENCES:
patent: 2926892 (1960-03-01), Wentworth
patent: 5843345 (1998-12-01), Guntly
patent: 6481699 (2002-11-01), Aihara et al.
patent: 7143999 (2006-12-01), Ogishi
patent: 7172178 (2007-02-01), Hacker

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