Carburetor for an internal combustion engine
AssigneeRamirez Development Corporation
InventorLuis A. Ramirez Diaz
Life of this patent
Estimating the term…
Abstract
An improved flow-type carburetor for an internal combustion engine comprising an exhaust gas conduit and port for introducing exhaust gas into the area of the carburetor defined between the venturi and the throttle valve and two or more ports for introducing additional air into the area of the carburetor between the venturi and throttle valve.
Claims17
In a flow-type carburetor for an internal combustion engine having at least two cylinders and an exhaust system conducting exhaust gas from said cylinders, said carburetor including an air intake for receiving air, a venturi and a fuel nozzle cooperating to create an air-fuel mixture and conducting said air-fuel mixture through a throttle valve to said cylinders, the improvement comprising:
- (a) an exhaust conduit conducting exhaust gas from said exhaust system to said carburetor;
- (b) an exhaust gas port in the wall of said carburetor proximate said throttle valve in fluid communication with said exhaust conduit for introducing said exhaust gas into an area in said carburetor defined between said venturi and said throttle valve, within the limitations imposed by the size of said exhaust gas conduit and port, the amount of exhaust gas introduced into said area being solely controlled by the difference between exhaust gas pressure within said exhaust system and fluid pressure in said area as determined by throttle valve position;
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- (c) air introducing means directly conducting air into said area for increasing the percentage of air in said air-fuel mixture in said area.
A method for improving the performance of an internal combustion engine having at least two cylinders, an exhaust system conducting exhaust gas from said cylinders, and a carburetor, said carburetor including an air intake for receiving air, a venturi and a fuel nozzle cooperating to create an air-fuel mixture, and conducting said air-fuel mixture through a throttle valve to said cylinders, said method comprising the steps of:
- (a) placing an exhaust gas port in the wall of said carburetor proximate said throttle valve at an angle to the axis of flow of said air-fuel mixture of between 75.degree. and 105.degree. providing fluid communication with an area in said carburetor defined between said venturi and said throttle valve;
- (b) directly connecting an exhaust gas conduit between said exhaust system and said exhaust gas port such that, within the limitations imposed by the size of said exhaust gas conduit and port, the amount of exhaust gas introduced into said area is solely controlled by the difference between exhaust gas pressure within said exhaust system and fluid pressure in said area as determined by throttle valve position;
- (c) placing a first air port in the wall of said carburetor proximate said throttle valve in a direction toward said throttle valve and at an angle to the axis of flow of said air-fuel mixture of between 30.degree. and 60.degree.;
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- (d) placing a second air port in the wall of said carburetor proximate said venturi in a direction toward said throttle valve and at an angle to the axis of flow of said air-fuel mixture of between 30.degree. and 60.degree..
Dependencies are inferred from the claim text.