Original Auto Engine Spare Parts Fuel Injector Assembly 23670-0E020 For 2gd-Ftv 2.4L

A fuel injector is an essential component of the fuel delivery system in internal combustion engines. It is transmitted signals from the engine control unit (ECU) and moulds the incoming fuel into a fine mist that is then delivered into the combustion chamber or intake manifold. The injector is vital for efficient combustions and higher performance of the engine.

The injector is usually placed near the intake valves or inside the combustion chamber, depending on the type of fuel injection system employed. The main purpose of the injector is to provide accurate and controlled amounts of fuel at the precise moment. This atomized form of fuel results in a more efficient mixing with the incoming air which helps to promote thorough combustion for an improved engine performance.

A fuel injector is equipped with one or multiple nozzles that are responsible for the spray pattern. These nozzles come in varied sizes and shapes, allowing for a customizable pattern according to the engine type and requirements.

1. Port Fuel Injector: Port fuel injectors are commonly used in gasoline engines. They are located in the intake manifold near each intake valve port. Port fuel injectors spray fuel into the intake manifold, allowing it to mix with the incoming air before entering the combustion chamber. This type of injector is often electronically controlled and provides precise fuel delivery.

2. Direct Fuel Injector: Direct fuel injectors, also known as gasoline direct injection (GDI) injectors, are used in modern gasoline engines. Unlike port fuel injectors, direct injectors spray fuel directly into the combustion chamber. This allows for more precise control over the fuel-air mixture and combustion process, resulting in improved efficiency and power output. Direct injectors operate at higher fuel pressures compared to port injectors.

3. Common Rail Injector: Common rail injectors are used in diesel engines. They are part of a high-pressure fuel injection system called a common rail system. In this system, a common fuel rail supplies fuel to all the injectors at a constant high pressure. When activated by the engine control unit (ECU), the injectors open to release fuel into the combustion chamber. Common rail injectors allow for precise control of fuel timing, duration, and quantity, contributing to efficient diesel combustion.

4. Unit Injector: Unit injectors, also known as unit pump injectors, are used in some diesel engines. In this design, the injector and the fuel pump are combined into a single unit. The unit injector pressurizes and injects fuel directly into the combustion chamber. Unit injectors are mechanically actuated and provide precise fuel control for diesel engines.

5. Throttle Body Injector: Throttle body injectors are commonly used in older port fuel injection systems. They are located in the throttle body, which is responsible for controlling the air intake into the engine. Throttle body injectors spray fuel into the throttle body, allowing it to mix with the incoming air. Throttle body injection systems are less precise compared to port or direct injection systems but are still found in some older vehicles.

6. Multi-Point Fuel Injector: Multi-point fuel injectors are used in some port fuel injection systems. They consist of multiple injectors, typically one for each cylinder, located in the intake manifold. Multi-point injectors deliver fuel to each intake port or cylinder individually, providing better fuel distribution and combustion control compared to throttle body injectors.