Engines belong to the group of thermal machines. They are based on the application of the right-turning thermodynamic cycles during which the products are useful thermodynamic, or mechanical work. Diesel predicted compression of clean air, so the compression ratio can be of such value that it is subsequently injected fuel spontaneously ignites (self-ignition of fuel). Today, the term Diesel engine includes a two-stroke or four-stroke piston engine which draws in fresh air. The air is compressed to more than 3MPa, and therefore warm to a temperature above 1000 K. In such glowing air is injected to lower the amount of so-called heavy. Diesel oil, which is self-igniting at 570 K-620 K. From its inception until today, the Diesel engine has seen many net changes, the intake and exhaust systems also paid special attention due to increasingly stringent environmental standards and laws. This article describes the intake and exhaust in the Diesel engine, ie, functions and essential parts for the proper operation of the intake and exhaust systems for Diesel engines.