Variable venturi type carburetor
AssigneeToyota Jidosha Kogyo Kabushiki Kaisha
InventorsTakaaki Ito, Norihiko Nakamura
Life of this patent
Estimating the term…
Abstract
Variable venturi type carburetor characterized in that one end of the fuel suction-ejection hole opens in a venturi unit formed in the carburetor body; a throttle is provided midway in the fuel suction-ejection hole; one end of a fuel path, the other end of which opens in the float chamber, opens in the inside wall of the throttle, whereby steam bubbles generated in the fuel of the fuel path can be sucked into said throttle and thus coalescence and growth of steam bubbles in the fuel can be prevented from causing vapor lock.
Claims16
Variable venturi type carburetor having a body including an external wall and a float chamber comprising:
- a venturi unit vertically formed in the carburetor body;
- a horizontal fuel suction hole assembly, one end of which opens in said venturi unit and an opposite end opening in said external wall of said carburetor body;
- a plug which blocks the opposite opening in the wall outside of said fuel suction hole assembly;
- a tubular member inserted into said fuel suction hole assembly;
- a throttle provided inside of the inserted end of said tubular member;
- a suction piston opposed to the venturi opening end of said fuel suction hole assembly, movable into or out of said venturi unit;
- a tapered needle attached to said suction piston, a tip portion of said needle extending through said throttle;
- a fuel suction pipe vertically fitted to the carburetor body beneath said throttle, a bottom portion of said pipe opening into the float chamber and a top portion opening into said fuel suction hole assembly;
- and
- fuel path means formed in the throttle of said tubular member to communicate said throttle with said pipe.
Carburetor of claim 8, wherein said fuel path means comprises a single port formed in said throttle.
Variable venturi type carburetor having a body provided with a float chamber comprising:
- a venturi unit formed in the carburetor body;
- a fuel suction-ejection hole assembly, one end of which opens into said venturi unit;
- a throttle provided midway in said fuel suction-ejection hole assembly;
- a suction piston opposed to the one end of said fuel suction-ejection hole assembly, movable into or out of said venturi unit;
- a needle attached to said suction piston, a tip portion of said needle running through said throttle and extending into said fuel suction-ejection hole assembly;
- and
- fuel path means, one end of which opens into the float chamber, the other end opening in said throttle;
- wherein the fuel path means comprises a plurality of holes provided in an internal wall portion of said throttle, spaced in a peripheral direction.
Dependencies are inferred from the claim text.