Evaluation of Cylinder Volume Estimation Methods for In–Cylinder Pressure Trace Analysis

• Main Author: Adrian Irimescu
• Format: Article
• Language: English
• Published: Eftimie Murgu University of Resita 2012-09-01
• Series: Analele Universităţii "Eftimie Murgu" Reşiţa: Fascicola I, Inginerie
• Subjects: in–cylinder pressure trace analysis; piston engines; connecting rod length; cylinder volume
• Online Access: http://anale-ing.uem.ro/2012/11.pdf

In–cylinder pressure trace analysis is an important investigation tool frequently employed in the study of internal combustion engines. While technical data is usually available for experimental engines, in some cases measurements are performed on automotive engines for which only the most basic geometry features are available. Therefore, several authors aimed to determine the cylinder volume and length of the connecting rod by other methods than direct measurement. This study performs an evaluation of two such methods. The most appropriate way was found to be the estimation of connecting rod length based on general engine category as opposed to the use of an equation that predicts cylinder volume with good accuracy around top dead centre for most geometries.