| Autor: |
Ugraram, Raghavendra, Reddy, B. Chandra Mohana, Reddy, R. Meenakshi |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2869 Issue 1, p1-8, 8p |
| Abstrakt: |
Application of Oxy fuel combustion (nitrogen free combustion) into a diesel combustion IC engine is resulting in a huge variation in in-cylinder pressure and temperature, compared to the conventional air combustion. The variation is observed in both rate of change of variables versus Crank Angle Degree and the peak values, impacting the thermomechanical behaviour of piston. This paper presents a study and comparison of oxy fuel combustion with conventional air combustion on thermomechanical stress and fatigue life analysis of piston. The temperature and pressure loads on the piston are extracted using an experimentally validated computational fluid dynamics model, at the most severe working state, which is at peak power operating condition. The analysis is based on the stress life approach using a finite element model, considering temperature dependent material properties of piston coupled with thermal stress field and thermomechanical stress field. The thermomechanical results indicate that the Oxy fuel combustion is the most favourable environment for piston, as the minimum fatigue life is 15.5 times higher and the equivalent stresses, maximum principal stresses are 11% lower than the conventional air combustion. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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