Carburier

Carburier is a term used in some contexts to refer to the carburetor, a device in internal combustion engines that blends air and fuel for ignition. In English, the standard term is carburetor (or carburator); in older or other spellings, carburateur may be used. Carburetors were common in gasoline engines before the rise of electronic fuel injection.

A carburetor meters and mixes fuel with air to create a combustible charge. Air enters through an intake and flows through a narrowed section called a venturi, where its speed increases and its pressure drops. This drop draws fuel from a float-controlled reservoir through one or more jets. The mixture then passes to the engine’s intake manifold. Cold starting and acceleration are controlled by additional mechanisms such as a choke to enrich the mixture and metering devices to adjust fuel flow according to engine speed and load.

Designs vary by type and era. Common configurations include updraft, downdraft, and sidedraft layouts, as well as single-barrel and multi-barrel (for example, two- or four-barrel) designs. Variants also differ in how they meter fuel, respond to airflow, and compensate for temperature and altitude. Modern automotive practice has largely shifted to electronic fuel injection, which provides more precise and flexible control, but carburetors remain in use in some small engines, older vehicles, and certain regions.

Historically, carburetors played a central role in gasoline engines from the late 19th century through much of the 20th century. Their development contributed to engine performance, fuel delivery efficiency, and the ability to adapt air–fuel ratios for various operating conditions.