Transient Thermal Behaviour of Engine Components During Cold Start

Abstract: Cold start operation represents one of the most critical phases in internal combustion engine performance. During this period, engine components experience rapid temperature variations that significantly influence efficiency, emissions, lubrication, and mechanical wear. This study investigates the transient thermal behavior of key engine components during cold start conditions. The analysis focuses on temperature evolution, heat transfer mechanisms, and thermal gradients affecting engine durability and performance. A transient thermal model is employed to evaluate temperature rise characteristics of major components, highlighting the impact of heat generation and thermal inertia. The findings indicate that non-uniform temperature distribution and delayed oil warming play a vital role in friction losses and component stress. The study provides insights into improving thermal management strategies during engine cold start. Keywords: Cold start operation, emissions, lubrication, temperature evolution, heat transfer mechanisms. Title: Transient Thermal Behaviour of Engine Components During Cold Start Author: Mohammad F. Kh. A. Alenezi, Ebrahim Mohammad Almufarrej International Journal of Mechanical and Industrial Technology ISSN 2348-7593 (Online) Vol. 13, Issue 2, October 2025 - March 2026 Page No: 88-91 Research Publish Journals Website: www.researchpublish.com Published Date: 23-February-2026 DOI: https://doi.org/10.5281/zenodo.18742299 Paper Download Link (Source) https://www.researchpublish.com/papers/transient-thermal-behaviour-of-engine-components-during-cold-start