Abstract
The use of such techniques conflicts with the engine’s energy efficiency and leads to increasing fuel consumption. It is promising to use technologies that would increase fuel and energy efficiency of ICE with EGR systems and combine high environmental efficiency with engine fuel efficiency. The technology of precooling intake air at the suction of turbocharger by waste heat using chiller (WHUCh) was developed for ICE with EGR system. The scheme-design solution of the exhaust gas recirculation system with using the heat of recirculation gas by an ejector chiller for cooling the air at the intake of main ship engine is proposed. The scheme-design solution of the EGR system with using the heat of recir-culation gas by an ejector chiller (ECh) for cooling the air at the intake of main ship engine is proposed. The effect of using the heat of recirculation gas for cooling engine intake air is analyzed taking into account the changing climatic conditions on a vessel’s route line. It is shown that using the heat of recirculation gas for cooling engine intake air by ejector refrigeration machine reduces the air temperature at the entrance of the main engine by 5–15 °C, which decreases the specific fuel consumption by 0.5–1.5 g/\(\rm{kW}\cdot \rm{h}\). This reduces emissions of harmful substances (NOx by 26–39%; SOx by 9–14%) when the engine is running with recirculation of gas.
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