Carburetor

Details Carburetor Carburetor

F - Mech Eng,Light,Heat,Weapons

02

M

123/80

F02M 7/08 (2006.01) F02M 3/12 (2006.01)

Patent

CA 1138731

ABSTRACT OF THE DISCLOSURE A carburetor herein disclosed includes a low speed spray aperture defined on the side wall of an intake duct at a position opposed to a throttle valve inside the intake duct and feeding a fuel for low speed operation in accord- ance with the degree of opening of the throttle valve, and a by-pass passage having, on the side wall portion- of the intake duct, an intake port and a controlling stream spray port whereby the former is defined on the upstream side of the throttle valve and the latter, on the downstream side of the throttle valve. The by-pass passage incorporates therein a controlling nozzle which sprays a jet stream towards the controlling stream spray port. In accordance with an embodiment of the invention, an acceleration nozzle is additionally disposed in the by-pass passage, the nozzle opening into the by-pass passage on the upstream side of the controlling nozzle and spraying an acceleration fuel into the by-pass passage. In accordance with another embodiment of the invention, the intake duct is connected with an intake manifold having branch conduits leading to respective combustion chambers of a plurality of cylinders of an engine. The bypass passage has a plurality of controlling stream spray ports, each of which opens into each of the branch conduits.

344188

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