What does a carburetor emulsion tube do?
Emulsion tube in a carburettor is used to maintain the air fuel ratio at all speeds.It consists of a well with main metering jet at its bottom. The jet has holes on its sides.It is in communication with atmospheric air. Initially air is drawn through the holes into the well and petrol is emulsified.
Why is the emulsion tube important to atomization?
Somewhere in between, the fuel and air are intermixed to form an emulsion – a fine dispersant of the air inside the fuel. This assists the atomisation of the fuel as it eventually enters the engine airstream.
How do Weber emulsion tubes work?
The air in the interior of the emulsion tube displaces the fuel and begins to pass from the interior and mix with or emulsify the fuel in the annulus. As the fuel continues to rise around the emulsion tube more air is introduced into the tube and the lower the air reaches inside the tube.
What is an emulsion tube?
The definition of the word emulsion is to mix. This is a tube found in a carburetor that mixes fuel and air for the main circuit.
What do air bleeds on a carburetor do?
Air bleeds, sometimes referred to as “air jets” or “air bleeders” play a vital role in the operation of your carburetor. Air bleeds are responsible for determining the amount of air that will mix with each circuit in the metering block. In the context of racing carburetors, it helps to think of them as (4) one barrels.
What are emulsion tubes?
What do high speed air bleeds do?
High-Speed Bleed: The high-speed air bleed controls how much air is fed to the emulsion channels of the metering block. To explain further, the emulsion channels distribute that air further to different parts of the main well where it mixes with fuel and ultimately goes to the booster.
How does a carburetor venturi work?
The air passes through a narrowed neck inside the carburettor (called a venturi ), which speeds up its flow at that point. As air flows faster its pressure drops, so there is a slight vacuum inside the venturi. The fuel jet opens into the venturi, and the partial vacuum sucks fuel through the jet into the air stream.
Where are the air bleeds on a quick fuel carburetor?
The high-speed air bleed is generally located closest to the accelerator pump squirter. Tuning with air bleeds is often easier than anything else on a carburetor. Air bleeds often resemble a main jet only slightly smaller.