The engine control unit (ECU) regulates fuel injection. The air and fuel mixture is compressed in the combustion chambers and ignites, powering the engine.The fuel and air combine in the intake manifold.The fuel injector sprays the gas into the intake manifold.The fuel pumps send fuel to the injector. ![]() The fuel injection process follows these steps: The fuel is also atomized when it is sprayed and burns more efficiently. Spraying the fuel allows for more control over the amount of fuel allowed into the chamber, ensuring a precise and consistent fuel stream. Fuel is sprayed into the combustion chamber rather than poured or vacuumed. The fuel pumps, filters and injectors work together to ensure that engines receive the necessary amount of fuel and air to ignite in the combustion chamber, powering your engine. When heavy deposits and clogs are present, the injectors cannot deliver the optimal amount of fuel to the engine.įuel injectors spray gasoline and diesel into engines to keep them running. This nozzle atomizes the fuel, turning it into a fine mist so it can burn easier. ![]() During system operation, a plunger opens the injector, allowing pressurized fuel to escape through a tiny nozzle. Your vehicle’s fuel pump delivers fuel to the injectors, which can open and close as frequently as needed to control intake. Diesel fuel requires more injection pressure because it’s heavier than gasoline and burns at higher temperatures. In contrast, modern gasoline engines use a port injection system that adds air to the fuel immediately before the intake stroke.ĭiesel injectors send fuel directly into the engine’s cylinder. Traditional gasoline engines use carburetors to mix fuel and air before sending it into the cylinder to compress. Gasoline and diesel engines inject fuel differently.
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