| 摘要 |
FIELD: internal- combustion engine. SUBSTANCE: annular catalytic converter 11 designed for cleaning exhaust gases of internal-combustion engines from pollutants during warm-up period of the latter has case 13 forming chamber for exhaust gas 15, admission hole 17 for exhaust gas on one end of case and outlet hole 19 on other end of case, hollow catalytic structure 23 with isolated channels and voids. Catalytic structure is mounted coaxially along case within chamber and separated from case walls thereby forming passage 25 between outer surface of catalytic structure and walls and axial channel 27 connecting outlet hole and admission hole. Converter has valves 41 that open or close depending on definite conditions. When valves are closed, gas flow through axial channel is shut off so that gas flows in radial direction through catalytic structure into passage; when they are open, gas easily flows from admission hole through axial channel to outlet hole. EFFECT: improved design. |
