531355-3

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531355-3, also known as AF-3 or Automotive Fuel-3, is an automotive fuel injector system used in modern diesel engines. It is designed to provide superior low-temperature performance and improved economy. The system is based on the already popular injector design with a few improvements. The main advantages of AF-3 are increased power, improved fuel economy, reduced emissions, and improved emissions control.

The AF-3 injector system uses a series of four injectors, each connected to one of the four valves in the engine\'s fuel injection system. Each injector has two nozzle sets, one set for larger-scale fuel injection and one set for smaller-scale injection. A flexible fuel line runs from each injector to the fuel filter, and then on to the fuel rail. The fuel rail contains a separately mounted fuel pressure regulator.

Each injector is activated by the computer based on the amount of fuel required to meet the engine\'s operating requirements. When the engine is idle, the injector is activated at a lower pressure than when the engine is running. This pressure is controlled by the pressure regulator to ensure the correct amount of fuel is delivered to the engine\'s combustion chamber. When the engine is running, the computer will increase the pressure of the injector to deliver more fuel as the engine RPMs increase.

AF-3 injectors have a mechanical fuel pump designed to regulate fuel pressure and provide fuel at a constant rate. The fuel pump is driven by the crankshaft and delivers fuel at a constant rate regardless of the engine\'s operating speed. This helps to prevent fuel system damage due to extremely high pressure spikes caused by rapid acceleration or hard braking.

AF-3 injectors also have an electronic control unit (ECU) which is used to regulate fuel delivery. The ECU is programmed with pre-set parameters and programs that can be adjusted based on engine load, RPM, and other variables. This system allows the computer to fine-tune the fuel injection parameters for maximum efficiency.The AF-3 injector system is used in many modern diesel engines and provides robust performance and improved efficiency. The system is designed to reduce emissions and improve fuel economy, making it a great choice for drivers who demand optimal performance and efficiency from their vehicle.

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