Dynamic Behaviour of Rotary Vane Engines With One, Two and Four Work Units

A mathematical model to analyse the dynamic behaviour of a novel rotary vane engine (RVE) is introduced in this paper. The RVE have a number of advantages compare to a majority of other reciprocating engine types. The main advantages are a simple structure and the small number of moving parts. The geometrical structure and dynamical behaviour of engines with a different number of work units is considered in detail. This has been examined through a study of torque transmission with a particular reference to how this is affected by the non-circular geometry of gear pitch curves. A possible method for balancing of asymmetric cogwheels have been proposed as well. The analysis concludes that by using an appropriate design and arrangement of cogwheels and all moving parts, vibration due to impulsive gas torque can be attenuated.