US 7,410,153 B1 · Vacuum accelerator assist module for carburetors

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.

Claims20

Dependent claims

A vacuum accelerator assist module connected to a carburetor having an intake chamber and a fuel metering chamber, comprising:

a first housing half and a second housing half, each said housing half including a cavity;
a diaphragm being retained between said first and second housing halves, said diaphragm creating a first chamber and a second chamber;
and
means for biasing said diaphragm into said second chamber, wherein, said first chamber communicating with the intake chamber of the carburetor, said second chamber communicating with the fuel metering chamber of the carburetor.

1 more element

Dependencies are inferred from the claim text.

Vacuum accelerator assist module for carburetors

Life of this patent

Vacuum accelerator assist module for carburetors

Life of this patent

Abstract

Claims20