Which type of diesel engine fuel nozzle utilizes multiple holes for fuel delivery?

The multi-hole fuel nozzle is specifically designed with several orifices to deliver fuel into the combustion chamber. This design enhances atomization of the fuel, promoting better mixing with air and resulting in a more efficient combustion process. The multiple holes help create a finer fuel spray, which is essential for optimal engine performance, especially in modern high-speed diesel engines where precise fuel delivery is crucial for power and emissions control.

Utilizing multiple holes allows for a greater surface area for the fuel to disperse, leading to improved combustion efficiency and reduced emissions. This nozzle type is particularly beneficial in applications where quick and thorough mixing of fuel and air is necessary to maximize performance and minimize unburned fuel, which can lead to increased emissions and engine deposits.

Other types of nozzles, such as pintle and open nozzles, generally have different designs and characteristics that may not achieve the same level of atomization or efficiency as a multi-hole nozzle. A self-cleaning nozzle, while beneficial in preventing clogging, does not inherently imply multiple holes for fuel delivery, instead focusing on maintaining operational integrity over time.