Research on Coupling Transfer Characteristics of Vibration Energy of Free Piston Linear Generator

In order to clarify the mechanism and main influencing factors of the vibration energy coupling transmission with a dual-piston structure, a thermodynamic and dynamic coupling model of the free piston linear generator (FPLG) was established. The system energy conversion, vibration energy coupling transmission, and influencing factors were studied in detail. The coupling transmission paths and the secondary influence mechanism from in-cylinder combustion on vibration energy transmission were obtained. In addition, the influence of the movement characteristics of the dual-piston on the vibration energy transmission was studied, and the typical parameter variation law was obtained, which provides theoretical guidance for the subsequent vibration reduction design of the FPLG.