Numerical Analysis of the Structural and Flow Rate Characteristics of the Fuel Injection Pump in a Marine Diesel Engine

A reciprocating fuel pump system was investigated using a modeling approach. The diesel comprises variable-sized barrel and plunger. This study investigates the effect of diesel, propane, DME fuels on plunger barrel’s deformation flow rate characteristics. It compares displacement as function working pressure. Based multi-field coupling theory, numerical fluid–solid thermal model developed to characterize operational fluctuations in clearance. Due distinct patterns two components, appropriate clearance for pump’s head stem must be set independently. In addition, significant AMESim parameters compared confirmed discharge rates three fuels. results show that maximum 0.00266 mm at 7.5 from top stem, which 6.94% lower than literature result. showed stability initially (from 0.0 0.4 s) when diameter 23.85 mm. According diameters, marine injection increased, minimizing wearing between barrel/plunger. research findings revealed suggested structural is recommended alternative applications.