A Diesel Catalyst with National VIB Structure

Abstract

The invention discloses a catalytic converter with a new type structure of the diesel country VI-b, which comprises an air intake end cover, a DOC carrier, a urea mixer, an SCR carrier and an air outlet end cover arranged sequentially along the axial direction of the catalytic converter, and also includes a guide plate and Urea nozzle; among them, the deflector is located between the air intake end cover and the DOC carrier; the DOC carrier, urea mixer and SCR carrier are wrapped by the packaging shell; the urea nozzle is connected to the side of the urea mixer, and the urea nozzle The urea solution is sprayed into the urea mixer; the air inlet cover is provided with a side air inlet; the deflector includes a lower partition and an upper partition, and the lower partition and the upper partition are arranged with diversion holes; The baffle and the lower end of the air intake end cover are sealed and arranged, the upper baffle is arranged vertically on the lower baffle, and the upper baffle faces the side air inlet of the air intake end cover. The invention provides a novel catalytic converter for post-treatment of automobiles arranged in the engine room, which has low cost, simple production process, saves layout space and can ensure uniform mixture.

Description

technical field [0001] The invention relates to the technical field of automobile catalytic converters, in particular to a catalytic converter with a novel structure of the national VI-b for diesel oil. Background technique [0002] The existing catalytic converter with urea mixing chamber is arranged on the chassis, and its urea mixing chamber is located in the front of the SCR unit. The urea mixing chamber and the SCR are integrally a unit. The exhaust gas goes from the NSC to the DPF and then reaches the urea mixing chamber at the front end of the SCR unit. The exhaust gas is fully mixed with the urea aqueous solution sprayed by the urea nozzle through the mixing chamber, and the urea solution is decomposed into NH 3 , enters the SCR catalyst, and reacts with NOx inside the catalyst to generate N 2 and H 2 0, to achieve NOx purification. [0003] The urea mixing chamber of the common national VI catalytic converter is arranged on the chassis. The urea mixing chamber is...

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned technical solutions have not effectively solved the problem of "how to arrange a catalytic converter that saves chassis space, has low cost, simple production process, and ensures uniform gas mixture"

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