Carburetor and method of operating the same

Details Carburetor and method of operating the same Carburetor and method of operating the same

2008-07-08

2009-10-20

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

C123S179160, C123S179180, C261S039100

Reexamination Certificate

active

07603983

ABSTRACT:
A carburetor (1, 51) has an intake channel (2) wherein a throttle element and a choke element are arranged with the choke element being upstream of the throttle element. The choke element is displaceable between an operating position (8) and at least one starting position (9). A first fuel path is provided which supplies fuel to the intake channel section (2) in dependence upon the underpressure present therein. A first controllable valve (20) for controlling the supplied fuel quantity is mounted in the first fuel path. In order to achieve an adapted fuel supply in different operating states, a second fuel path is provided which defines a bypass line to the first valve (20). A second valve (44, 54) is mounted in the second fuel path. A method for operating the carburetor (1, 51) provides that the second valve (44, 54) is actuated in dependence upon at least one operating parameter of the carburetor (1, 51).

REFERENCES:
patent: 4672929 (1987-06-01), Wissmann et al.
patent: 4676204 (1987-06-01), Inoguchi et al.
patent: 4770823 (1988-09-01), Sejimo
patent: 5648023 (1997-07-01), Nojima
patent: 6851664 (2005-02-01), Gangler et al.
patent: 6932058 (2005-08-01), Nickel et al.
patent: 2002/0113326 (2002-08-01), Takano et al.

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