Pulse fuel pump for a diaphragm carburetor

Details Pulse fuel pump for a diaphragm carburetor Pulse fuel pump for a diaphragm carburetor

2006-12-05

2006-12-05

Stashick, Anthony D. (Department: 3746)

Pumps

Expansible chamber type

Having separate noncyclic valve

C417S307000

Reexamination Certificate

active

07144230

ABSTRACT:
A device that corrects with ease and high precision any deviation of the fuel flow rate due to variation in the constituent components of a carburetor, and to improve the exhaust condition and operability of an engine. A carburetor in which the delivery channel23and the suction channel20of a fuel pump15are connected with the aid of an escape channel27, and in which a portion of the delivery fuel is allowed to escape to the suction side in order to prevent pressure exerted on the fuel valve10by the fuel delivered to the constant fuel chamber5from the fuel pump15, which operates by pressure pulses, from reaching or exceeding a specified level, wherein the escape channel27is equipped with a manual control valve29for steplessly adjusting the surface area thereof. The quantity of fuel retained in the constant fuel chamber5can be adjusted so as to achieve a predetermined fuel flow rate by changing the escape quantity of the delivery fuel and rendering the fuel valve10more resistant to opening or less resistant to opening.

REFERENCES:
patent: 2405466 (1946-08-01), Tabb
patent: 4271093 (1981-06-01), Kobayashi
patent: 6595500 (2003-07-01), Osburg et al.

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