Abstract
The test results on the dynamic behavior of the free piston displacements, the hydraulic pressures and the gas pressure on the first cycle at the start of the engine at room temperature are reported in this paper. It becomes clear that the entire cycle consists of four processes, that is, the compression, expansion, bounce and damped oscillation processes. Dynamics of the free piston in these four processes are discussed in this paper. Furthermore, the value of the polytropic index on the compression process is obtained experimentally. The energy losses in the compression process are also discussed in this paper. It becomes clear that the main sources of energy losses are piston friction and pressure loss in the pilot-operated check valve. Finally, the firing operation is repeated every 0.5 or 1.0 second, and the free pistons stop after each operation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
