BLACK SMOKE REMOVING DEVICE

PROBLEM TO BE SOLVED: To solve the problems that a regeneration system by external energy is required if a generally used ceramic system is adopted for black smoke removal at a time of start of a diesel engine since exhaust gas temperature is low, that exhaust gas quantity increases and the device is enlarged if the device is operated at loaded time, and that the device is large and complicated and costs high in any case. SOLUTION: A main open-close valve 2 is provided in an exhaust gas passage 1 of an engine generator 8, a bypass passage 3 bypassing the main open-close valve 2 by establishing communication between the exhaust gas passage 1 in an upstream side of the main open-close valve 2 and the exhaust gas passage 1 in a downstream side of the main open-close valve 2 is provided, an inlet open-close valve 4, a filter device 5 removing black smoke in exhaust gas and an outlet open-close valve 6 are provided in an order from an upstream side of the bypass passage 3, a control means 7 performing open-close control of each valve is provided, the main open-close valve 2 is closed, the inlet open-close valve 4 and the outlet open-close valve 6 are opened to capture black smoke by the filter device 5 during established period of time in start of the engine. COPYRIGHT: (C)2007,JPO&INPIT