Abstract: The fuel injector system is a crucial component in modern automotive engines, especially in four-wheelers, where efficient fuel delivery and combustion are essential for performance and emission control. This project focuses on the modelling and 3D printing of a fuel injector system used in four-wheel vehicles. Using CAD software, the injector was designed with precision to mimic real-world functionality. The design process involved analyzing the structure, function, and material considerations of fuel injector systems. Once the modelling phase was completed, the 3D model was printed using FDM (Fused Deposition Modelling) technology with PLA material. This prototype helps in understanding the design, assembly, and functioning of the fuel injection mechanism, and serves as an educational tool for automotive engineering applications. The study also emphasizes the advantages of additive manufacturing in prototyping and testing automotive components, offering a cost-effective and time-saving approach for product development.

Keywords: Fuel injector system,3D Printing, CAD Modelling, PLA Material

| DOI: 10.17148/IARJSET.2025.12620