FIELD: engines and pumps.
SUBSTANCE: internal combustion engine includes combustion chamber having an outlet hole, bleed valve for opening or closing of outlet hole, outlet device having outlet channel for directing the waste gas leaving the combustion chamber through outlet hole and secondary air supply system for air supply to discharge device. The latter includes convergent section having the cross-section area for the flow, which is lower at its outlet end than on its inlet end, divergent section located downstream relative to convergent section and having cross-section area for the flow, which is bigger at its outlet end than on its inlet end, and branched section for diverting compression shock spreading in the flow direction in outlet channel with higher speed than waste gas passing to outlet channel from combustion chamber. Waste gas passing to outlet channel from combustion chamber comes across compression shock that is reflected in branched section before divergent section and passes through convergent section, thus increasing pressure of waste gas in convergent section. Waste gas passes through divergent section in order to create new compression shock. Secondary air supply system includes feed section for air supply to some part of outlet channel, which is located closer in flow direction relative to divergent section by using negative pressure created in the part of outlet channel, which is closer in flow direction relative to divergent section, with newly created compression shock. There described are versions of design of multi-cylinder internal combustion engine, secondary air supply method, versions of design of transport vehicle and sea vessel with multi-cylinder internal combustion engines.
EFFECT: reducing power losses at air supply to outlet channel of multi-cylinder internal combustion engine.
17 cl, 18 dwg
