Mathematical Modelling Comparison of a Reciprocating, a Szorenyi Rotary, and a Wankel Rotary Engine

Nonlinear engineering: Modeling and application

article

Luis F. Espinosa¹  Petros Lappas² 

[1] Faculty of Engineering Sciences, UTEQ University;School of Engineering, RMIT University

关键词: Rotary engine;    Szorenyi engine;    Wankel engine;    Reciprocating engine;    mathematical modelling;    Wiebe function;    net work comparison;    Szorenyi engine geometry;    pressure change;    Wiebe;    combustion;   

DOI  :  10.1515/nleng-2017-0082

来源: De Gruyter

【 摘 要 】

This paper provides an explanation of the geometry, design, and operational principles for the three engines; having special emphasis in the Szorenyi rotary engine which has a deforming rhombus revolving inside a mathematically defined stator. A basic ideal mathematical simulation of those engines were performed, assuming the Otto cycle for the three engines. Also, it assumes the volumetric efficiency of 100%, a wide-open throttle (WOT), no knock nor any mechanical or thermal losses. This simulation focuses on how the fuel burns during combustion, creating pressure and thus, net work. A comparison in pressure traces and cycle performance is made. The study concludes analysing and comparing the ignition advance; finding the best advance for each engine thus the net work between the three engines during one working cycle. Finally, this paper analyses how the different volume change ratio for the combustion chamber of the Szorenyi, Wankel and the reciprocating engine have an effect in the pressure, net work and thermal efficiency generated inside the chamber during combustion for every working cycle.

【 授权许可】

Unknown