Komatsu Excavator Parts Injection Fuel Pump 6745-71-1170

Komatsu Excavator Parts Injection Fuel Pump 6745-71-1170

The injection fuel pump is a critical component of an excavator's engine, responsible for delivering the correct amount of fuel to the engine's cylinders at the right pressure and time. This ensures efficient combustion and optimal engine performance. Here's a detailed overview of the injection fuel pump in the context of an excavator:

Key Functions of the Injection Fuel Pump

1. Fuel Delivery: Precisely meters and delivers fuel to the engine’s cylinders.
2. Pressure Generation: Increases fuel pressure to ensure efficient atomization and combustion.
3. Timing: Ensures fuel is injected at the correct point in the engine’s cycle for optimal performance.

Types of Injection Fuel Pumps

1. In-Line Injection Pumps: Have multiple plunger and barrel assemblies, one for each cylinder, aligned in a single housing.
2. Rotary Injection Pumps: Use a rotating mechanism to distribute fuel to each cylinder, typically more compact and used in smaller engines.

Components

1. Plunger and Barrel: The plunger moves within the barrel to pressurize the fuel and deliver it to the injectors.
2. Delivery Valve: Prevents fuel from returning to the pump after injection and maintains pressure in the injector lines.
3. Camshaft: Drives the plungers in the pump to ensure proper timing and fuel delivery.
4. Governor: Regulates fuel delivery based on engine speed and load, ensuring consistent performance.
5. Timing Device: Adjusts the timing of fuel injection to match the engine’s operational requirements.

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