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Fuel Injector

2025-01-24

A fuel injector is a critical component of modern internal combustion engines, responsible for delivering fuel into the engine's combustion chamber in a precise and controlled manner. The fuel injector is part of the fuel injection system, which has largely replaced carburetors in most vehicles due to its superior efficiency, accuracy, and environmental benefits.

Components of a Fuel Injector

  1. Nozzle: Directs and atomizes the fuel into a fine mist for better combustion.
  2. Solenoid: An electromagnet that opens and closes the injector to allow fuel to flow.
  3. Valve: Controls the flow of fuel from the injector.
  4. O-rings and Seals: Ensure a tight seal to prevent fuel leaks.
  5. Filter Basket: Filters out debris before fuel enters the injector.

How It Works

  1. Fuel Delivery: Pressurized fuel from the fuel pump reaches the injector.
  2. Signal from ECU: The engine control unit (ECU) sends an electrical signal to the solenoid.
  3. Injection: The solenoid activates, opening the valve, and fuel is sprayed into the combustion chamber or intake manifold in a precise amount.
  4. Atomization: The fuel is atomized into fine droplets to mix efficiently with air for optimal combustion.
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