Analysis of the Effects of Bore Clearance Due to Skirt Profile Changes on the Piston Secondary Movements

Analysis of the Effects of Bore Clearance Due to Skirt Profile Changes on the Piston Secondary Movements

Clearance movements of engine piston are very related to the piston impact to the engine block as well as many tribological problems. Some of the major parameters that influence these kinds of performances are piston profiles, piston offsets and clearance magnitudes. In our study, computational investigation is performed about the piston movements in the clearance between piston and cylinder liner by changing the skirt profiles and piston offsets. Our results show that curved profile and more offset magnitude to thrust side have better performance that has low side impact during the engine cycle.