Membrane carburetor

Details Membrane carburetor Membrane carburetor

1992-09-14

1994-02-01

Miles, Tim

Gas and liquid contact apparatus

Fluid distribution

Pumping

261DIG68, 251333, 251359, F02M 1704

Patent

active

052830136

ABSTRACT:
The invention is directed to a membrane carburetor for an internal combustion engine such as a two-stroke engine having an intake for drawing the mixture in by suction. The membrane carburetor has a venturi section wherein the mixture is formed. A main nozzle opening opens forward of a throttle flap and an idle nozzle opening opens rearward of the throttle flap both viewed in flow direction. Both openings are connected via channels to a fuel-filled control chamber to which fuel flows via an inflow channel. An inlet valve is mounted in the inflow channel and has a valve body disposed opposite a valve seat fixed in the housing. The inlet valve is actuated in the opening direction via a control lever by a control membrane delimiting the control chamber. Transverse accelerations are prevented from leading to an opening of the inlet valve by providing a sealing surface on the valve body which coacts with an annular sealing surface disposed on the valve seat and lying parallel to the flat sealing surface on the valve body. The flat sealing surface lies essentially at right angles to the opening direction.

REFERENCES:
patent: 2068938 (1937-01-01), Viel
patent: 2144017 (1939-01-01), Gistucci
patent: 2683027 (1954-07-01), Garretson
patent: 2735439 (1956-02-01), Coffey
patent: 3009794 (1961-11-01), Barfod
patent: 3219063 (1965-11-01), Schumann et al.
patent: 3527246 (1970-09-01), Petersen et al.
patent: 3623699 (1971-11-01), Matousek et al.
patent: 4235418 (1980-11-01), Natalizia
patent: 4386594 (1983-06-01), Szloboda
patent: 4793951 (1988-12-01), Scott
patent: 4903655 (1990-02-01), Vonderau et al.
The American Heritage Dictionary, Apr. 1982 p. 545.

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