| 摘要 |
PROBLEM TO BE SOLVED: To enable a dynamic vibration absorber 20 to increase a degree of freedom of tuning for vibration reduction and stabilize vibration reduction characteristic of the dynamic vibration absorber 20 when the dynamic vibration absorber 20 is provided inside a sectional hollow piston pin 2.SOLUTION: In an engine piston structure including the dynamic vibration absorber 20 that is provided inside the sectional hollow piston pin 2 to suppress integrated resonance of a piston 1, the piston pin 2, and a small end part 10a of a con rod 10 with respect to a large end 10b of the con rod 10 during a combustion process, fluid 31 is filled between the piston pin 2 and the dynamic vibration absorber 20.SELECTED DRAWING: Figure 3 |
