| 摘要 |
FIELD: engines and pumps.SUBSTANCE: invention relates to a method of feeding heat energy into device for neutralising exhaust gases. Method for feeding heat energy in device for neutralising exhaust gases (2), arranged in outlet path of internal combustion engine, in particular diesel engine, by heating waste gases, arriving at exhaust gas neutralisation device (2) to required temperature. Exhaust gases emitted by internal combustion engine, heated to required temperature by conversion of hydrocarbons, are gradually fed into exhaust duct on two oxidising converters (7, 10) arranged along exhaust gas flow direction one after another. Closest downstream of exhaust gases of internal combustion engine first oxidation catalyst (10) is arranged in auxiliary channel (4), and located after second oxidation catalyst (7) is arranged in outlet path for point fusion of main and auxiliary exhaust channels (3 and 4). Depending on weight of total flow of exhaust gases released internal combustion engine, actual temperature and required temperature of exhaust gas flow running on exhaust gas neutralisation device (2), using control value corresponding to current conditions or close to them and produced from parametric control field considering characteristics of flow of exhaust gases and required temperature increase, controlled supply of hydrocarbons for their injection into auxiliary channel (4) in exhaust gas flow before first oxidation catalyst (10) and (or) in exhaust gas mass flow in auxiliary channel (4). Repeatedly record actual temperature of exhaust gases, arriving at exhaust gas neutralisation device (2). If difference between actual temperature and required temperature change parameters of hydrocarbons feed and (or) mass flow of exhaust gases flowing through auxiliary channel (4), to achieve required temperature, temperature monitoring operation is repeated until required temperature is achieved.EFFECT: efficient neutralisation of exhaust gases by raising temperature of exhaust gases fed to neutralisation device.15 cl, 4 dwg |
