Research Information System
7th INTERNATIONAL CONFERENCE ON ADVANCES IN MECHANICAL ENGINEERING, İstanbul, Turkey, 24 - 26 December 2024, pp.380-397
Cavitation in diesel engine injector nozzles is a significant phenomenon that impacts fuel spraying and combustion. The purpose of this review is to present a thorough understanding of cavitation in diesel injection systems by summarizing the results of experimental and numerical investigations. To achieve this, the impacts of several parameters on the cavitation phenomena are examined, including nozzle geometry, fuel properties, and injection conditions. Cavitation, which results in collapsed vapor bubbles, is caused by abrupt pressure drops in the injector nozzle. Fuel atomization may be impacted, and the nozzle may sustain damage from the bubbles that occur. However, when the injector undergoes sudden pressure changes, the fuel breaks up into smaller droplets despite all these disadvantages. Better atomization of the fuel results in more uniform distribution and improved burning. The cavitation phenomenon inside the diesel injector nozzle can be studied using two primary techniques. These techniques are high-speed imaging technology techniques based on experimental systems and numerical techniques based on computational fluid dynamics (CFD). Fuel viscosity, temperature, injector nozzle geometry, and starting conditions have all been found to be closely connected to cavitation generation in both experimental and numerical investigations.