Exhausting apparatus

Abstract

This invention relates to an exhaust device, which sets a reduction catalyst and an oxidation catalyst in a vent runner of a vent-pipe, in which, the vent runner between the two catalysts is connected to a pressed unit with an ingress pipe, such as an engine cooling fan, wheels or a pressed fan to increase the secondary air volume entering into the vent-pipe, increase the air needed by catalysis effectively and reduce discharge pollution.

Description

technical field [0001] The invention relates to an exhaust device, especially an exhaust device for increasing the flow rate of secondary air entering the exhaust pipe and increasing the air required for catalytic reaction. Background technique [0002] Existing vehicles (such as locomotives) generally introduce secondary air at the front end of the exhaust pipe or behind the cylinder exhaust valve in order to increase the flow of secondary air into the exhaust pipe and increase the air required for the catalytic reaction. [0003] As shown in FIG. 1 , in an existing vehicle, an intake pipe 102 for introducing secondary air is connected to the front end 101 of the exhaust pipe 100, and the other end of the intake pipe 102 is connected to an air filter 103 for filtering air. dust or impurities in it. In addition, a one-way valve 104 is connected in the middle of the intake pipe 102 so that the introduced air can be transported to the exhaust pipe 100 unidirectionally through...

AI Technical Summary

Problems solved by technology

[0004] Although most of the existing exhaust devices can meet the demand of catalyst, due to the use of reduction catalyst, the secondary air must be introduced from the middle of the front pipe of the exhaust pipe, resulting in a serious shortage of secondary air, and cannot effectively increase the oxidation catalyst The air required for the reaction is difficult to achieve the best effect of reducing emission pollution

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