In the video, we will learn about the basics of the EGR environmental system (Exhaust Gas Recirculation system) for gasoline and diesel internal combustion engines. The following topics will also be covered: EGR valve, EGR sensor, types of exhaust gas recirculation (external and internal), and the algorithm and principle of the EGR system's operation. In our online video course "Car Anatomy" there are more informational videos in 3D animation. Details on our website: https://carinfo3d.com