Abstract
A composite insulated piston with air-gap and heat insulating gasket was presented,in which the piston crown,insulation gasket and aluminum skirt are connected by four symmetrical bolts. In order to investigate the characteristics of the mentioned piston,the thermal boundary of the piston was analyzed and the temperature field of the piston was simulated and tested. It is revealed that the air-gap and insulation gasket has important effect on the overall piston temperature field. The heat flow through the piston ring groove is reduced by about 20%. Then,a mechanical simulation model was verified by comparison analysis of the mechanical stress and the contact surface pressure. The thermal-mechanical stress was calculated and the worst stress area between the insulation gasket and the piston crown was obtained. Next,the structural optimization of the composite piston was carried out and the results show that the stress amplitude is reduced by about 50% and the stress distribution is improved. The design of the composite insulated piston was finally completed.
| Translated title of the contribution | Structural Design and Optimization of the Composite Insulated Piston |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 472-479 |
| Number of pages | 8 |
| Journal | Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) |
| Volume | 38 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 25 Sept 2020 |