主题词：Advanced Combustion Engine Technologies; Biodiesel Production and Applications; Advanced machining processes and optimization; Vehicle emissions and performance; Vehicle Dynamics and Control Systems; Mechanical Engineering and Vibrations Research; Advanced Machining and Optimization Techniques; Aluminum Alloys Composites Properties; Heat Transfer and Optimization; Natural Fiber Reinforced Composites; Aerodynamics and Fluid Dynamics Research; Heat Transfer Mechanisms; Combustion and flame dynamics; Advanced Surface Polishing Techniques; Lubricants and Their Additives; Vibration Control and Rheological Fluids; Electric and Hybrid Vehicle Technologies; Nanofluid Flow and Heat Transfer; Advanced Welding Techniques Analysis; Welding Techniques and Residual Stresses; Manufacturing Process and Optimization; Additive Manufacturing and 3D Printing Technologies; Fluid Dynamics and Turbulent Flows; Structural Health Monitoring Techniques; Fluid Dynamics and Vibration Analysis