Different Types of Carburetors

The carburetor, a device that blends air and fuel for an internal combustion engine, is not as complicated as it may seem. In fact, if you are searching for the right carburetor, you can learn about the different types available in just a few minutes.

Background information on carburetor evolution

Many types of carburetors exist, each of which can accommodate different load conditions, engine designs and air/fuel requirements. Different carburetors feature different drafts, different numbers of barrels, different types of venturi and different flow rates. Carburetors were invented in the late nineteenth century, and since then, technology has evolved greatly. Variations on the original version are now used to produce engines with increased power and efficiency.

Types available today

Today, three main kinds of carburetors exist. They differ in function, complexity and effectiveness. Most are either fixed choke or variable choke. Fixed choke carburetors are most common in American cars and trucks. Variable choke carburetors use the pressure of the airflow to regulate fuel intake indirectly. Instead of filling the space, like a fixed choke carburetor, airflow pressure in a variable carburetor activates a connecting pin which in turn narrows or widens the fuel jet. One other kind of carburetor is the multibarrel carburetor, which is the most simple. It contains a single barrel through which the air flows on its way to the engine's combustion chambers. Multibarrel carburetors may contain two to four such barrels. This allows more air to flow through the carburetor and is especially useful for engines with larger displacements, since more air is needed in the engine at any given time.

Choosing a carburetor depends on your specific engine needs. After researching your options, make sure to consult with an expert to guide you in your final selection.