Los nuevos Motores Diesel. #3 El Common Rail. Tecnología BOSCH
Common Rail Injection Systems Explained
Overview of Common Rail Technology
- The common rail system is a fuel injection technology used in modern engines, distributing fuel to all injectors while maintaining constant pressure.
- It operates at extremely high pressures, approximately 2500 atmospheres, which is crucial for effective fuel atomization during combustion.
Fuel Pressure Management
- A low-pressure pump draws fuel from the tank and passes it through multiple filtration systems, highlighting the importance of clean fuel due to the small tolerances in modern injectors.
- An electronically controlled high-pressure system ensures that the pressure remains stable at 2500 kg/cm², allowing for precise control over injection timing and quantity.
Injection Precision and Efficiency
- Modern engines utilize multiple injections (up to eight simultaneous injections), enhancing combustion efficiency and reducing emissions compared to older single-injection systems.
- The high pressure allows for finer atomization of fuel droplets, improving mixing with air in the cylinder and optimizing combustion processes.
Importance of High Pressure
- High pressures are necessary because they enable liquid fuels like diesel to be finely atomized through small orifices, leading to better combustion characteristics.