| 摘要 |
PURPOSE:To improve the combustion when the engine is operated at a low speed or under a low load and provide a high power engine by introducing an exhaust gas into a bypass passage and attempting to obtain complete combustion of the engine by an after-burner unit and a catalyst part. CONSTITUTION:A bypass passage 10 which leads from the upstream side to the downstream side of a sluice valve 9 of an outlet vent 8. A sluice valve 11 which is controlled so that it is opened only when the internal-combustion engine is operated at a low speed or under a low load, is provided at the inlet side of the bypass passage 10. An after-burner flame outlet port 14 of the after-burner unit 13 consisting of a fuel pump 12 which is operated only when the sluice valve 11 is opened and an exhaust gas E is introduced into the bypass passage 10, a fresh air sucking blower as indicated by arrow (a), and a combustion apparatus, is opened at an ejector part 15 provided within the bypass passage 10. Flame flowing out of the after burner flame outlet port 14 and exhaust gas E are exhausted and mixed by the ejector part 15. |
