A fully rigged and animated 3D model of a 4-cylinder car engine, designed for abstract mechanical animations and combustion chamber visualization. The rig is constructed primarily using constraints, while the materials inside the combustion chamber are animated using drivers to depict the four phases of combustion. The engine's rotation speed can be adjusted using a single custom RPM property located on the crankshaft. The model utilizes procedural materials and includes fallback OBJ and FBX formats for the base mesh.