![Illustration of the principle of the free-piston linear generator [2,12]. | Download Scientific Diagram Illustration of the principle of the free-piston linear generator [2,12]. | Download Scientific Diagram](https://www.researchgate.net/publication/327127242/figure/fig1/AS:661990213177345@1534842174422/Illustration-of-the-principle-of-the-free-piston-linear-generator-2-12.png)
Illustration of the principle of the free-piston linear generator [2,12]. | Download Scientific Diagram
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Working principle of NDDSMRD. (1) Piston rod (2) Upper end cover (3)... | Download Scientific Diagram
![The principle of operation of the piston hybrid power machine (PHPM)... | Download Scientific Diagram The principle of operation of the piston hybrid power machine (PHPM)... | Download Scientific Diagram](https://www.researchgate.net/publication/340914050/figure/fig1/AS:884144414404609@1587807863719/The-principle-of-operation-of-the-piston-hybrid-power-machine-PHPM-with-a-piston-seal.png)
The principle of operation of the piston hybrid power machine (PHPM)... | Download Scientific Diagram
![a) Working principles for a conventional piston (left) and a tension... | Download Scientific Diagram a) Working principles for a conventional piston (left) and a tension... | Download Scientific Diagram](https://www.researchgate.net/publication/333636125/figure/fig1/AS:11431281173036673@1688743306120/a-Working-principles-for-a-conventional-piston-left-and-a-tension-piston-right-b-A.png)