Validation of a Polytropic-Based Blow by Model and Predicting Crevice Flow Cyclic Variations in a CNG SI ‎Engine‎

Subject Areas : International Journal of Industrial Mathematics

ابراهیم عبدی اقدم ^{1 *}

1 - Department of Mechanical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran.

Received: 2020-05-20 Accepted : 2020-06-13 Published : 2022-09-01

Keywords: Blowby, Thermodynamic Model, CNG, Polytropic, SI engine, Cyclic variation,

Abstract :

In the present work, first a Polytropic-Based Blowby Model (PBBM) was validated using a Thermodynamic Simulation Code (TSC). Then, using the results extracted from a single-cylinder SI research engine, the P- of an Ensemble Average Cycle (EAC) was calculated the experimental cycles. The crevice flow rates of the EAC were estimated using both codes. The results showed a good agreement between them.