What is the principle behind the carburettor of an automobile

Components The Ford 1 barrel carburetor used on all six cylinder engines consists of two main assemblies, the upper body assembly and the lower body assembly. The upper body assembly contains the major metering components of the carburetor. The main and idle fuel, power valve, float chamber vent and fuel inlet systems, are all part of the upper body assembly. Operation The function of the carburetor is to mix fuel and air, in the proper proportion, and to supply the mixture in the proper quantity to the engine for all engine operating conditions. The engine speed is regulated by controlling the quantity of fuel and air delivered to the cylinders. Operation is based on the principle of pressure differences, or vacuum. Air is drawn into the carburetor air horn by vacuum created through movement of the engine piston. As the air passes through the carburetor on its way to enter the cylinders, lower pressure is created at the fuel discharge outlets of the carburetor. The fuel bowl is vented to the atmosphere and or the air cleaner. The higher air pressure exerted on the fuel in the bowl will force fuel to travel up through the fuel discharge channels and out into the air stream passing through the carburetor. The fuel and air are mixed at this point and distributed into the engine cylinders for burning. Fuel Inlet [shift4shop catalog_id=2807] The fuel inlet system of a carburetor maintains a predetermined fuel level within the fuel bowl. If the level of the fuel within the bowl...

Up Next • • • • In trying to keep up with emissions and fuel efficiency laws, the fuel system used in modern cars has changed a lot over the years. The 1990 Subaru Justy was the last car sold in the United States to have a In this article, we'll learn how the fuel gets into the cylinder of the engi­ne, and what terms like "multi-port fuel injection" and "throttle body fuel injection" mean. ­For most of the existence of the • Main circuit - Provides just enough fuel for fuel-efficient cruising • Idle circuit - Provides just enough fuel to keep the engine idling • Accelerator pump - Provides an extra burst of fuel when the accelerator pedal is first depressed, reducing hesitation before the engine speeds up • Power enrichment circuit - Provides extra fuel when the car is going up a hill or towing a trailer • Choke - Provides extra fuel when the engine is cold so that it will start In order to meet stricter emissions requirements, engine control unit (ECU) uses this information to adjust the air-to-fuel ratio in real-time. This is called closed loop control -- it was not feasible to achieve this control with carburetors. There was a brief period of electrically controlled carburetors before fuel injection systems took over, but these electrical carbs were even more complicated than the purely mechanical ones. At first, carburetors were replaced with throttle body fuel injection systems (also known as single point or central fuel injection systems) that incorporated electrical...

• Afrikaans • العربية • Azərbaycanca • Беларуская • Български • བོད་ཡིག • Català • Čeština • Dansk • Deutsch • Eesti • Ελληνικά • Español • Esperanto • Euskara • فارسی • Français • Gaeilge • ગુજરાતી • 한국어 • Հայերեն • हिन्दी • Hrvatski • Ido • Bahasa Indonesia • Italiano • עברית • Jawa • ಕನ್ನಡ • ქართული • Kaszëbsczi • Қазақша • Кыргызча • Magyar • Македонски • Bahasa Melayu • Монгол • မြန်မာဘာသာ • Nederlands • 日本語 • Norsk bokmål • پنجابی • Polski • Português • Română • Русский • Slovenčina • Slovenščina • Ślůnski • کوردی • Српски / srpski • Srpskohrvatski / српскохрватски • Suomi • Svenska • Tagalog • தமிழ் • తెలుగు • ไทย • Türkçe • Українська • اردو • Tiếng Việt • 吴语 • 粵語 • 中文 A carburetor (also spelled carburettor or carburetter) Since the 1990s, carburetors have been largely replaced by Etymology [ ] The name "carburetor" is derived from the verb carburet, which means "to combine with carbon", The name is spelled "carburetor" in carb in the UK and North America or Carby in Australia. Operating principle [ ] The carburetor is located upstream of the The carburetor works on accelerator pump), the driver pressing the The main disadvantage of basing a carburetor's operation on The orientation of the carburetor is a key design consideration. Older engines used updraft carburetors, where the air enters from below the carburetor and exits through the top. From the late 1930s, downdraft carburetors become more commonly used (especially in the United States), along with side draf...

Carburetor Types What is Carburetor? Carburetor Types :- It is a mechanical device used to supply air-fuel mixture in an S.I. (spark ignition) engine. This process is known as carburetion. It mixes the air and fuel in proper manner to make charge which is to be delivered to the Need of Carburetor? As we know that the proportion of air and fuel in the charge is dependent on the engine parameters viz. speed, load. It varies with different conditions. To fulfil this requirement of changing and regulate the air fuel ratio depending upon the condition carburetor is used. Working Principle of Carburetor Carburetor works on the Bernoulli’s principle. At the time of suction stroke Air is drawn inside the cylinder using a Venturi. As the speed of air passes through Venturi increases it creates less pressure inside the Venturi and creates a pressure difference between venturi and float chamber (a kind of fuel reservoir). This pressure difference draws the fuel inside venturi from float chamber. Higher the air velocity higher the fuel content and vice versa. The speed of air in venturi is maintained according to the speed of vehicle. Thus simple carburetor helps to regulate the air fuel ratio in IC engine. Types of Carburetor A. On the Basis Direction of Flow of Air • Up-draft type carburetor • Down-draft type carburetor • Horizontal type carburetor 1. Up-Draft Type Carburetor : ( Types of Carburetor ) In this type of carburetor, air enters through the bottom side of the carburetor a...

The working of carburetor of an automobile is based on Bernoulli’s theorem. The carburetor of an automobile has a venture channel (nozzle) through which air flows with a large speed. The pressure is then lowered at the narrow neck and the petrol is sucked up in the chamber to provide the correct mixture of air fuel necessary for combustion. The working of carburetor of an automobile is based on Bernoulli’s theorem. The carburetor of an automobile has a venture channel (nozzle) through which air flows with a large speed. The pressure is then lowered at the narrow neck and the petrol is sucked up in the chamber to provide the correct mixture of air fuel necessary for combustion .