What are the various parts of simple carburetor?

A simple carburetor consists of Throttle Valve, Venturi, Float Chamber, Mixing Chamber, Idle and Transfer port and Choke Valve.

What are the main parts of a carburetor?

Components of carburetors usually include a storage chamber for liquid fuel, a choke, an idling (or slow-running) jet, a main jet, a venturi-shaped air-flow restriction, and an accelerator pump. The quantity of fuel in the storage chamber is controlled by a valve actuated by a float.

What is a simple carburettor?

What is a simple carburetor? A simple carburetor consists of different parts such as the float chamber, main fuel jet, venturi, jet tube, and throttle valve. Where there is a float in the float chamber. With the help of a fuel pump, fuel is supplied to the float chamber from the fuel tank through the strainer.

What are the 3 types of carburetors?

There are three general types of carburetors depending on the direction of flow of air.

  • Types of Carburetors.
  • Constant Choke Carburetor:
  • Constant Vacuum Carburetor:
  • Multiple Venturi Carburetor:


How does a simple carburetor work?

Simple Carburator work on the Bernoulli’s principle. During the suction stroke, air is drawn into the cylinder through venturi (also known as choke tube). Because of this pressure difference fuel is discharged to air stream through fuel discharge nozzle. …

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What is the main function of carburetor?

A carburetor is a device which helps in mixing fuel and air together for facilitating internal combustion inside an internal combustion engine. This device passes the mixture of fuel and air to the intake manifold (a device delivering air/fuel mixture to the cylinders) of an internal combustion engine.

What sits on top of a carburetor?

The round air filer housing sat on top of a carburetor where the gas and air are mixed before going to the cylinders. Newer cars use fuel injection and the plumbing for the air flow is different. … The fuel is then injected into the air flow (throttle body) or directly into the cylinders (a better design).

What are the defects in simple carburetor?

Limitations of simple carburetor

  • At low speed, the amount of fuel in air-fuel mixture is very low. …
  • It gives stoichiometric mixture only at one specific speed and load. …
  • Fuel economy is very low. …
  • The working of simple carburetor will be affected by the atmospheric pressure.

What are the defects of simple carburettor?

1) At a very low speed, the mixture supplied by a Simple Carburetor is so weak that it will not ignite properly and for its enrichment, at such conditions some arrangement in the carburetor is required to be made. 2) The working of simple carburetor is affected by changes of atmospheric pressure.

What is the working principle of carburetor?

Principles. The carburetor works on Bernoulli’s principle: the faster air moves, the lower its static pressure, and higher the dynamic pressure is. The throttle (accelerator) linkage does not directly control the flow of liquid fuel.

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Why don’t they use carburetors anymore?

Most car manufacturers stopped using carburetors in the late 1980’s because newer technology was coming out, such as the fuel injector, that proved to be more efficient. There were only a few cars that continued to have carburetors, such as the Subaru Justy, until about the early 1990’s.

What are the two hoses on a carburetor?

The two hoses circled in red are vent/over flow hoses. Should not have any plugs in them. They basically both route between the two carbs, hanging down. Each carb has a vacuum nipple.

What is rich mixture?

A rich mixture is a fuel/air mixture containing an excessive proportion of fuel. … A rich mixture provides enough fuel to use up all of the oxygen in the cylinder. A rich mixture has too much gasoline and not enough air.

What are the symptoms of a bad carburetor?

Here are four telltale signs that your carburetor needs attention.

  • It just won’t start. If your engine turns over or cranks, but doesn’t start, it could be due to a dirty carburetor. …
  • It’s running lean. An engine “runs lean” when the balance of fuel and air gets thrown off. …
  • It’s running rich. …
  • It’s flooded.

How does a choke work on a carburetor?

By restricting the flow of air into the throat of the carburetor, the choke valve reduces the pressure inside the throat, which causes a proportionally-greater amount of fuel to be pushed from the main jet into the combustion chamber during cold-running operation.