Inside the engine that is responsible for internal combustion which is a type of heat engine where the process occurs by means of which the chemical energy of gasoline or fuel is transformed into mechanical energy , a mixture between air and said fuel that makes it possible for a vehicle to be mobilized. This is where the carburetor comes in to play an important role , since it is the part that is responsible for making the fuel mixture , specifically in those vehicles that use gasoline to be able to move.

What is the carburetor?

The carburetor is a type of mechanical device that is related to the mixture that occurs between air and fuel in an engine in the process known as internal combustion .

  • Carburetor Features
  • Story
  • Types
  • Parties
  • How does it work
  • What is the carburetor for?
  • Breakdowns
  • Maintenance
  • Importance

Carburetor Features

The main characteristics that can be observed in a carburetor are the following:

  • It is a part of the engine that works according to the Bernoulli principle .
  • It was created in the second half of the 19th century when the internal combustion engine was also created .
  • It has a part where gasoline and air can mix.
  • It totally depends on the relationship between gasoline and air in order for the engine to function properly.
  • Currently it is not used in all vehicles due to its price , weight , volume and great complexity .
  • It is common to observe it in two-stroke vehicles in the engine and in light machinery .
  • It can also be used in some types of agricultural machinery such as chainsaws .
  • It is relatively easy to maintain , low in weight, and also easy to transport.
  • The mixture that occurs inside the carburetor is called a carburetor .


The history of the carburetor begins in 1850 when the gasoline engine also appeared . It turned out to be at that time the best mechanism that existed to be able to properly regulate the mixture that reached the engine and in the same way its power and speed . It was first patented by Karl Benz but many historians agree that its true creator was Samuel Morey in 1826 . With the passage of time, many people emerged who were dedicated to its manufacture and use in the construction of automobiles.


There are several types of carburettors which can be classified depending on the layout and type of engine. In this way we find the following types of carburettors depending on their disposition:

  • Vertical carburettors
  • Inverted verticals , this is the type of carburetor that is used most frequently as it has the ability to bring combustion to the cylinders more easily.
  • Horizontal

Depending on the type of engine that the car has, the following types can be found:

  • carburetors double
  • Double body or stepped carburettors
  • Carburettors with variable diffuser
  • Carburettors with fixed diffuser
  • Monobody


The carburetor is composed of several parts which are:

  • Tank : this part consists of a small tank that has the ability to maintain gasoline levels constantly thanks to the feed pump it contains.
  • Jet : it is a long, narrow tube through which gasoline travels . It is commonly known by the name of gicleur and is responsible for communicating the tank and the duct through which the air passes, in other words, the place where the mixture of air and gasoline is formed.
  • Diffuser : this is a narrow area through which the tube that carries the air passes so that the mixture can be carried out. It is based on the principle that says that ” the air currents that brush a hole produce a suction effect “.

How does it work

The carburetor has a part known as the intake manifold, which is the place where the air from outside can enter and then pass through a filter . When it reaches the level of the diffuser , it becomes narrower, thus activating the passage of air while absorbing the gasoline. This mixture manages to reach the cylinders . As the air moves faster, the gasoline is absorbed in the same way, managing to pass to the cylinders found in the engine .

By means of the pistons and their movement that occurs from top to bottom, the mixture reaches the combustion chambers , where an explosion occurs, causing the engine energy to be generated at the same time . The carburetor contains a valve known as a butterfly which will regulate the mixture. This part is activated when the person activates the pedal to accelerate the vehicle and is located at the outlet of the carburetor allowing the passage of a greater or lesser amount of fuel .

What is the carburetor for?

The carburetor of a car serves to be able to provide the fuel mixture in adequate quantities at all times depending on the needs of the engine , the more power required, the carburetor is responsible for supplying the exact amount of mixture so that said force can be achieved .


Some of the most common breakdowns that can affect a car’s carburetor are the following:

  • Cold Starting Difficulties : This problem can be caused by a failure in the choke or by errors in the gasoline distribution when starting a car.
  • Starting difficulties when the car is hot : it occurs when there is a percolation in the tank or when steam begins to generate in the gasoline pump.
  • Instability : it occurs when there is a bad position in the butterfly valve of the carburetor or when there is a damage in the air intake.
  • Incorrect accelerations : these arise when there is a defect in the pump in charge of acceleration or in the circuits that are in charge of progression.
  • Inadequate performance : these originate when the butterfly does not have the ability to open fully, when there is an obstruction in the passages or when the pressure of the gasoline pump fails.


Carburettors must always be kept clean so that they can function properly and not present any type of problems in order to correctly regulate the combustion produced by the engine, otherwise it will be reduced and compromised . It is important to constantly watch for air blockages, decreased acceleration capacity , strange sounds coming from the engine, or small explosions that occur in the exhaust systems instead of the combustion chamber.

To be able to do a good maintenance it is necessary to do a cleaning for which the carburetor must be removed and cleaned using a special solvent . In order to remove it, it must first be disconnected from the fuel line so that it can then be removed from the engine. The carburetor should open and drain the remaining gasoline that is in it. Checking that the needle is not stuck or obstructed is also important, if this happens, it must be removed and cleaned using a wire brush . It is always best to take the car to an expert in mechanics so that he is the one who performs a proper cleaning.


The carburetor is one of the most important parts because it is in charge of mixing the air and fuel , in addition, it is in charge of regulating the speed and forces of the engine depending on the effort to which it is subjected.a

Leave a Comment