Vorrichtung zum Reinigen von Abgasen einer Brennkraftmaschine

摘要

A device for purifying the exhaust gas of an internal combustion engine (1) comprises a particulate trap (35) arranged on each exhaust port (33) communicating between the engine cylinders and the exhaust merging portion (31) in the exhaust system (3), a communicating passage (36) for communicating each exhaust port with at least one other exhaust port on the upstream side of each particulate trap (35), a communicating valve (37) which is arranged on the communicating passage (36), and a restraint means (34,37,42a) which can restrain temporarily the exhaust gas flowing into at least one particulate trap. When needed, the restraint means (34,37,42a) temporarily restrains the exhaust gas flowing into at least one particulate trap (35) and at least one communicating valve (37) is closed such that the exhaust port (33) on which at least one particulate trap (35) is arranged is not communicated with the other exhaust port.