Abstract
Considering the variable inertia of the reciprocating parts, free torsional vibration characteristics of crankshaft are studied. Based on instantaneous kinetic energy equivalent principle, a kind of accurate calculating method of single-cylinder diesel engine's variable inertia is presented. Free torsional vibration differential equations of the single- and multi-cylinder diesel engine crankshaft systems are established, and torsional vibration characteristics of the system are also analyzed theoretically. Numerical calculation of the free vibration of a certain multi-cylinder diesel engine is completed. The results indicate that the introduction of variable inertia has a great effect on the torsional vibration characteristics, such as the free frequency, critical speed zone, and torsional vibration angular displacement, of the crankshaft system.
| Original language | English |
|---|---|
| Pages (from-to) | 864-868 |
| Number of pages | 5 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 27 |
| Issue number | 10 |
| Publication status | Published - Oct 2007 |
Keywords
- Diesel engine
- Instantaneous kinetic energy
- Torsional vibration characteristics
- Variable inertia