bränsleinsprutningsrail

A bränsleinsprutningsrail, often called a fuel rail, is a component in internal combustion engines that supplies fuel to the fuel injectors. It is typically a hollow tube made of metal, such as aluminum or steel, with ports at one end for connecting to the fuel supply line and at the other end for connecting to the fuel pressure regulator. Along its length, there are individual outlets, each connected to a fuel injector. The fuel rail ensures that a consistent and pressurized supply of fuel is delivered to each injector, allowing for precise fuel metering into the engine's combustion chambers.

The primary function of the fuel rail is to distribute fuel evenly to all injectors. This uniformity is crucial for optimal engine performance, fuel efficiency, and reduced emissions. The pressure within the fuel rail is maintained by the fuel pump and regulated by the fuel pressure regulator, which returns excess fuel to the tank. Modern fuel injection systems utilize high-pressure fuel rails, especially in gasoline direct injection (GDI) engines where fuel is injected directly into the cylinder. The design and material of the fuel rail are important for its durability, resistance to corrosion, and ability to withstand the operating pressures and temperatures of the engine. Any leaks or blockages in the fuel rail can lead to significant engine problems, including misfires, poor acceleration, and increased fuel consumption.