Pistons in Spark Ignition (SI) engines shoulder the demanding task of navigating the dynamic environment created by combustion. At the core of their function lies the need for pistons to withstand substantial thermal stresses. During the power stroke, combustion induces elevated temperatures, probing the limits of piston materials. The force applied to the piston during the power stroke is essential to SI engines’ operation. The rapid expansion of combustion gases subjects the piston to significant pressures, influencing its structural integrity. Temperature rise, inherent to combustion, adds another layer of complexity to piston behavior. The interaction between high temperatures and pressure on the piston’s connecting rod is examined in detail in the current study. In essence, this study focuses on the effects of the high temperature faced by pistons in SI engines, emphasizing their resilience against thermal stresses and pressure forces. In this paper, through analytical calculations and Finite Element Analysis (FEA) simulations, the nuanced dynamics governing piston performance during a seizure of an engine have been indicated.

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Thermal and Stress Analysis of Piston and Connecting Rod for Engine Seizure Condition

  • Reuben Manjaly,
  • Jasmin Jamariya,
  • Krish Desai,
  • Nishit Parmar,
  • Hari Vasudevan,
  • Vinayak H. Khatawate

摘要

Pistons in Spark Ignition (SI) engines shoulder the demanding task of navigating the dynamic environment created by combustion. At the core of their function lies the need for pistons to withstand substantial thermal stresses. During the power stroke, combustion induces elevated temperatures, probing the limits of piston materials. The force applied to the piston during the power stroke is essential to SI engines’ operation. The rapid expansion of combustion gases subjects the piston to significant pressures, influencing its structural integrity. Temperature rise, inherent to combustion, adds another layer of complexity to piston behavior. The interaction between high temperatures and pressure on the piston’s connecting rod is examined in detail in the current study. In essence, this study focuses on the effects of the high temperature faced by pistons in SI engines, emphasizing their resilience against thermal stresses and pressure forces. In this paper, through analytical calculations and Finite Element Analysis (FEA) simulations, the nuanced dynamics governing piston performance during a seizure of an engine have been indicated.