Reduction of the carbon footprint of cargo vehicles with pneumatic recovery of braking energy

Abstract

Reducing carbon dioxide emissions by passenger vehicles allows you to achieve the use of electric power plants and hybrid power plants made on the basis of thermal internal combustion engines and electric machines. However, the application of the above-mentioned approach for trucks is associated with significant difficulties due to the low specific capacity of the chemical current sources currently used. The recovery of braking energy of cargo vehicles in the pneumatic form is constrained by the need to achieve a high speed of switching on the pneumatic recuperator. In order to minimize the energy losses of the pneumatic recuperator during acceleration and steady-state. Without changing the design and reducing the reliability of the internal combustion engine, it is possible to supply air to its inlet at pressures not exceeding 350 kPa. When air is supplied to the internal combustion engine inlet at pressures of 200 and 300 kPa, it is possible to reduce specific carbon dioxide emissions by 16 and 37 % per unit of generated mechanical energy, respectively, compared to air supply under normal atmospheric conditions.