Design and optimisation of cushioning structure of hydraulic free-piston engine
The velocity of the free-piston assembly (FPA) of the hydraulic free-piston engine (HFPE) is very high, which is up to 10 m/s. In order to avoid the collision of the FPA to the cylinder head when the FPA moves towards the dead centres, the cushioning device must be involved. A cushioning structure w...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-10-01
|
| Series: | The Journal of Engineering |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8966 |
| _version_ | 1818614190406893568 |
|---|---|
| author | Qihuai Chen Haoling Ren Tianliang Lin Cheng Miao Shengjie Fu |
| author_facet | Qihuai Chen Haoling Ren Tianliang Lin Cheng Miao Shengjie Fu |
| author_sort | Qihuai Chen |
| collection | DOAJ |
| description | The velocity of the free-piston assembly (FPA) of the hydraulic free-piston engine (HFPE) is very high, which is up to 10 m/s. In order to avoid the collision of the FPA to the cylinder head when the FPA moves towards the dead centres, the cushioning device must be involved. A cushioning structure which combines the sidestep-shape cushion and flute-shape cushion is proposed according to the working principle of the HFPE. The mathematical model of the cushioning is set up, and key parameters are obtained. AMESim is employed to analyse the cushioning process and the influence of the key parameters on the cushioning process. The optimised parameters are obtained according to the simulation. The test rig is established to verify the effectiveness of the cushioning structure according to the optimised parameters. The experiment results show that the proposed cushioning structure is reliable. The maximum pressure during the cushioning process is 19 MPa, and cushioning time is 12 ms. The cushioning structure has little influence on the starting process of HFPE. |
| first_indexed | 2024-12-16T16:14:04Z |
| format | Article |
| id | doaj.art-23ad02e4ece14e11850ac03e8f093f64 |
| institution | Directory Open Access Journal |
| issn | 2051-3305 |
| language | English |
| last_indexed | 2024-12-16T16:14:04Z |
| publishDate | 2018-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Journal of Engineering |
| spelling | doaj.art-23ad02e4ece14e11850ac03e8f093f642022-12-21T22:25:09ZengWileyThe Journal of Engineering2051-33052018-10-0110.1049/joe.2018.8966JOE.2018.8966Design and optimisation of cushioning structure of hydraulic free-piston engineQihuai Chen0Haoling Ren1Tianliang Lin2Cheng Miao3Shengjie Fu4College of Mechanical Engineering and Automation, Huaqiao UniversityCollege of Mechanical Engineering and Automation, Huaqiao UniversityCollege of Mechanical Engineering and Automation, Huaqiao UniversityCollege of Mechanical Engineering and Automation, Huaqiao UniversityCollege of Mechanical Engineering and Automation, Huaqiao UniversityThe velocity of the free-piston assembly (FPA) of the hydraulic free-piston engine (HFPE) is very high, which is up to 10 m/s. In order to avoid the collision of the FPA to the cylinder head when the FPA moves towards the dead centres, the cushioning device must be involved. A cushioning structure which combines the sidestep-shape cushion and flute-shape cushion is proposed according to the working principle of the HFPE. The mathematical model of the cushioning is set up, and key parameters are obtained. AMESim is employed to analyse the cushioning process and the influence of the key parameters on the cushioning process. The optimised parameters are obtained according to the simulation. The test rig is established to verify the effectiveness of the cushioning structure according to the optimised parameters. The experiment results show that the proposed cushioning structure is reliable. The maximum pressure during the cushioning process is 19 MPa, and cushioning time is 12 ms. The cushioning structure has little influence on the starting process of HFPE.https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8966hydraulic systemspistonsmechanical engineering computingtime 12.0 mspressure 19.0 MPavelocity 10.0 m/sAMESimhydraulic free-piston enginesidestep-shape cushioncushioning deviceFPAfree-piston assemblycushioning structureoptimised parameterscushioning processHFPEflute-shape cushion |
| spellingShingle | Qihuai Chen Haoling Ren Tianliang Lin Cheng Miao Shengjie Fu Design and optimisation of cushioning structure of hydraulic free-piston engine The Journal of Engineering hydraulic systems pistons mechanical engineering computing time 12.0 ms pressure 19.0 MPa velocity 10.0 m/s AMESim hydraulic free-piston engine sidestep-shape cushion cushioning device FPA free-piston assembly cushioning structure optimised parameters cushioning process HFPE flute-shape cushion |
| title | Design and optimisation of cushioning structure of hydraulic free-piston engine |
| title_full | Design and optimisation of cushioning structure of hydraulic free-piston engine |
| title_fullStr | Design and optimisation of cushioning structure of hydraulic free-piston engine |
| title_full_unstemmed | Design and optimisation of cushioning structure of hydraulic free-piston engine |
| title_short | Design and optimisation of cushioning structure of hydraulic free-piston engine |
| title_sort | design and optimisation of cushioning structure of hydraulic free piston engine |
| topic | hydraulic systems pistons mechanical engineering computing time 12.0 ms pressure 19.0 MPa velocity 10.0 m/s AMESim hydraulic free-piston engine sidestep-shape cushion cushioning device FPA free-piston assembly cushioning structure optimised parameters cushioning process HFPE flute-shape cushion |
| url | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8966 |
| work_keys_str_mv | AT qihuaichen designandoptimisationofcushioningstructureofhydraulicfreepistonengine AT haolingren designandoptimisationofcushioningstructureofhydraulicfreepistonengine AT tianlianglin designandoptimisationofcushioningstructureofhydraulicfreepistonengine AT chengmiao designandoptimisationofcushioningstructureofhydraulicfreepistonengine AT shengjiefu designandoptimisationofcushioningstructureofhydraulicfreepistonengine |