Carburetor and fuel injection system pdf

A carburetor is a part of a combustion engine in which the fuel is converted into vapor and mixed. In carburetor fuel feeding system the engine cold start is a big issue. Explains the basics of airplane carburetors and fuel injection for pilots. The air and fuel mixture in the throttle body then travels through the intake valves and into the cylinders. In some case engine gets vibration and spark plug fouling issue is very common. Due to the less of findings and production of a fuel injection system for a. Pdf automobile engineering report on electronic fuel. In a carburetor system, the fuel is injected into the neck of the carburetor sort of a venturi where it mixes with air to produce charge. Fuel injection is a system for mixing fuel with air in an internal combustion engine. Due to inefficient combustion the emission is significantly high in carbureted engine. Pdf this project focus on the development of a single cylinder direct fuel injection engine. In case the fuel injection is well achieved by the above criteria, the.

Electronic fuel injection vs carburetors bike which one. Petrol vehicles uses device called carburetor for supplying the air fuel mixture in correct ratio to cylinders in all rpm ranges. It has become the primary fuel delivery system used in gasoline automotive engines, having almost completely replaced carburetors in the late 1980s. Throttle body fuel injection, while similar to a carburetor, has a separate throttle body with one fuel injector rather than fuel injectors located in each cylinder. The fuel tank contains a fuel gauge sending unit, a filler tube and a fuel pump. Since the fuel passes through the intake runners like a carburetor system, it is called. The tuning for how much fuel is injected in a few various scenarios is all mechanical setscrews, spr. United injector pump and nozzle, unit injector system and unit. Instead a manual control on the dash resembling a choke knob or, on later. Efis are available in 3 types namely throttle body injection.

Many believe that performance is best with a carburetor while others insist that the only way to go is with fuel injection gasoline. A fuel pump sends the petrol to the engine bay, and it is then injected into the inlet. The main difference between carburetor and fuel injection system carburetor zfuel is atomized by processes relying on the air speed greater than fuel speed at the fuel nozzle, zthe amount of fuel drawn into the engine depends upon the air velocity in the venturi fuel injection system zthe fuel speed at the point of delivery is greater than the. Notice due to the covid19 pandemic, we are limited to parts and 38 h series carburetors available for 125cc380cc two stroke dirt bikes. Rail electronic fuel injection the story from carburetor to electronic fuel injection. The system consists of a carb spacer plate with a fuel block and injector, an ecu, and a wide band o2 sensor. Fuel injection and fuel injection systems play a fundamental role in defining. A carburetor is a part of a combustion engine in which the fuel is. Objectives the functional objectives for fuel injection systems can vary. Fuel injection system as the name suggests is mainly consists of. Some fuel injection is mechanical, while more modern systems are electronic.

The system is composed by the fuel tank, the pipes, one or more fuel filters, a fuel pump that could be mechanical or electric and the fuel metering components such as the carburetor or fuel injection system. Although most small engines use the carburetor system for its simplicity and cheap prices, and less maintenance costs, fuel injection is the perfect choice for the modern vehicles for better performance, lower emissions, and fuel economy. In this paper, we will explain various types of fuel injection system that are used. Mc garage your motorcycle is either being fed fuel.