Development and Application of Ring-Pack Model Integrating Global and Local Processes. Part 1: Gas Pressure and Dynamic Behavior of Piston Ring Pack

Event
WCX™ 17: SAE World Congress Experience
Authors Abstract
Content
A new ring pack model has been developed based on the curved beam finite element method. This paper describes the first part of this model: simulating gas pressure in different regions above piston skirt and ring dynamic behavior of two compression rings and a twin-land oil control ring. The model allows separate grid divisions to resolve ring structure dynamics, local force/pressure generation, and gas pressure distribution. Doing so enables the model to capture both global and local processes at their proper length scales. The effects of bore distortion, piston secondary motion, and groove distortion are considered. Gas flows, gas pressure distribution in the ring pack, and ring structural dynamics are coupled with ring-groove and ring-liner interactions, and an implicit scheme is employed to ensure numerical stability. The model is applied to a passenger car engine to demonstrate its ability to predict global and local effects on ring dynamics and oil transport.
Meta TagsDetails
DOI
https://doi.org/10.4271/2017-01-1043
Pages
13
Citation
Liu, Y., and Tian, T., "Development and Application of Ring-Pack Model Integrating Global and Local Processes. Part 1: Gas Pressure and Dynamic Behavior of Piston Ring Pack," SAE Int. J. Engines 10(4):1927-1939, 2017, https://doi.org/10.4271/2017-01-1043.
Additional Details
Publisher
Published
Mar 28, 2017
Product Code
2017-01-1043
Content Type
Journal Article
Language
English