How does a carburetor work? Does anyone know what the mechanism is? Maybe some of my friends don’t know yet, so allow me to discuss it thoroughly.
Every vehicle, be it a motorbike or a car, needs a carburetor, fuel and air must be supplied simultaneously so that they mix in the engine combustion chamber.
The spark will be supplied by the spark plug, while air and fuel must be supplied simultaneously by the carburetor.
Therefore, the carburetor is an important part that must be present in all types of vehicles. If there is no carburetor, then the vehicle cannot be used.
Regarding this, how does a carburetor work in a vehicle? If you don’t know yet and want to find out, please read the following review.
How a Carburetor Works
The carburetor system is a type of fuel system used in conventional car engines that use internal combustion engines.
This system is responsible for mixing air and fuel in the right proportions and supplies the mixture to the engine through the intake manifold.
Apart from that, the carburetor also functions to regulate the high or low RPM of the vehicle engine. In the carburetor there are various components, each of which has its own function.
What are the components in it? This section will be discussed at the end of the article, because the main point that must be discussed is how carburetors work for cars and motorbikes.
First of all, I will discuss about.
Car Carburetor
A car is a vehicle that can be used when there is a supply of fuel and air to the engine.
It could be said that fuel is the main source of power that works to run a car engine.
Usually this carburetor combustion system is used by vehicles with a small capacity, say motorbikes.
However, it cannot be denied that there are still cars that use this combustion system, but the year of production can be said to be quite old, namely cars produced in 1987 and above.
Usually these cars are used for racing stock, where all engine components are replaced with after market parts.
So how does a car carburetor work? The answer is to change liquid gasoline into vapor by breaking down several parts into small pieces.
Why is that? The aim is to control the air entering through the petrol line until it becomes steam. Apart from that, there is another goal, namely to perfect the combustion that occurs in the engine.
How does a motorbike carburetor work? Here’s the review.
Motorcycle Carburetor
After knowing what the mechanism of a car carburetor looks like, it would be a good idea for you to really understand how a carburetor works on a motorbike.
In Indonesia, almost all motorbikes use VV ( variable ventury ) type carburetors. This type indicates that the carburetor has a venturi that can be changed.
There are two conditions for motorbike carburetors with variable ventury type , the way they work is different. What’s it like? Here’s the review.
- Pulling the Gas: When the driver is pulling the gas lever, the gas throttle will automatically rise upwards, so that the opening width of the venturi becomes larger and fuel will enter the combustion chamber.
- Engine Idle : When the engine is working with the gas throttle closed, the incoming air will go through the filter, then into the idle section and hole .
When the air entering from the filter section enters the idle air hole , the air flow will meet the fuel in the pilot jet channel.
After that, the fuel material that will come out has turned into gas or can be called air fuel mixture .
Vacuum Carburetor
The question is, does this vacuum carburetor work the same as a carburetor in general? The answer is different.
Why is it different? Because this vacuum carburetor does not rely on a skep needle, but relies on the vacuum of air sucked in by the piston in the cylinder.
So the analogy is like this. When the butterfly valve opens wide and the suction of air and fuel becomes more intense, this can create a vacuum phenomenon in the vacuum chamber.
When this happens, the rubber diaphragm will narrow and pull the piston stroke upwards and the fuel gas supply will increase by itself.
In this way, this working principle of course makes the air supply measure more balanced, fuel consumption remains efficient even though the butterfly valve in the venturi hole is wide open.
Apart from that, this vacuum carburetor can balance the flow of combustion gas even though compression is low due to knocking .
PE 28 carburetor
As explained above, the carburetor is an engine component whose job is to mist fuel into the cylinder head.
Other functions of the carburetor are:
- Regulates the intake of air and fuel into the engine.
- Misting air and fuel evenly.
- Regulates the fuel and air ratio in various speed loads.
So, how does the PE 28 carburetor work? Namely when the vehicle engine is turned on. When the engine is running, the engine will suck in outside air to enter it through the carburetor.
Because the air enters the engine through the carburetor nozzle, the air pressure at the inlet will be mixed with the fuel.
When fuel and air are mixed in the engine, both will produce gas which will later be wasted through the EX hole and expelled through the exhaust.
Carburetor Components
If we look at the picture above, we can find out what components are in the motorbike carburetor.
Actually, this discussion is a basic discussion that vehicle owners or automotive enthusiasts really need to know.
So there are just carburetor components? Following are the names and their functions:
Float Chamber
The float is a carburetor component made from lightweight plastic. The float contains a liquid that can float, especially above a pool of gasoline.
Float Needle
Apart from the float, there is also a float needle which has a sharp shape like a valve that presses on the hole. The needle presses the gasoline distribution hole so that the hole will close automatically.
If this component is not present, the motorbike or car carburetor will experience a leak at the bottom.
Needle Jet
The shape is almost the same as a float needle, but this needle jet tends to be narrower and sharper. Usually this needle is used to regulate the amount of fuel that comes out of the main jet.
The way this needle works is driven by the gas valve, which moves up and down.
Main Jet
This part is the main channel in the motorbike carburetor, where the function of this channel is to connect the gasoline from the float to the middle venturi (air channel to the intake).
Carburetor valve
The valve or gas valve on a motorbike carburetor is coin-shaped, this is almost similar to the gas valve in a car carburetor.
This scheme works up and down. This up and down movement can cause the size of the venturi to change, therefore the motorbike carburetor is of the VV ( variable ventury ) type.
Gas Valve Spring
This carburetor component is located at the top of the carburetor, precisely on the gas valve regulator cover.
Another function of the gas valve spring is to keep the valve or skep closed when the driver is pulling the gas lever, so that the skep will not come out of the inside of the carburetor.
Air Pilots
This component is a channel that extends from the space before the gas valve. The air pilot output will merge with the pilot jet channel.
When the air flow enters and passes through the air jet, gasoline or other fuel will automatically be mixed in the channel.
So, what is the main function of the air pilot? Namely supplying air when the gas valve is closed or in other words when it is idle.
Jet Pilots
Apart from the air pilot, there is also a pilot jet, this part is a channel whose function is to connect the fuel in the float with the space after the gas valve.
There is another function that you should know, namely stopping fuel when the engine is at idle RPM.
Chokes
The choke is a carburetor component that is used to reduce the volume of air entering the engine, why is that? The goal is for the suction to remove the fuel.
That way, the fuel and air mixture increases.
Generally, this choke is used when the motorbike engine is still cold. For example, when the rider is warming up the motorbike in the morning.
Carburetor Bowl
The carburetor bowl is a component whose function is to hold the fuel inside. Later the fuel will flow to the venturi section.
Adjustment/Adjusting Screw
On the carburetor there are two adjusting screws or bolts, the first is the wind setting and the idle setting.
The function of this part is to adjust the carburetor so that it works optimally and is able to provide powerful power.
That’s a review of how car and motorbike carburetors work, the function of the carburetor and the components inside. Hopefully this review can add insight to all of us.
Thank you for visiting, see you in the next article.
