Post-treatment catalytic silencer

By designing a post-treatment catalytic muffler including bent sections and high-level injection pipes, the problems of complex designs and easy nozzle clogging are solved, more convenient vehicle takeover and lower risk of urea crystallization are achieved, and the performance and reliability of the emission control system are improved.

CN222633299UActive Publication Date: 2025-03-18GUANGXI YUCHAI MASCH CO LTD
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Patent Information

Application Number
CN202421502491.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-03-18
Estimated Expiration
2034-06-28

AI Technical Summary

Technical Problem

The traditional after-treatment catalytic muffler is designed in complex, difficult to take over the whole vehicle, the nozzle is prone to clogging, and the risk of urea crystallization is high, which affects the performance and reliability of the emission control system.

Method used

A post-treatment catalytic muffler is designed, including a catalytic muffler body, nozzle, jet tube, coolant inlet pipe and coolant return pipe. Both ends of the jet tube, coolant inlet pipe and coolant return pipe are provided with bent pipe sections, which are connected by straight pipe sections, and the jet tube is arranged at a high position to reduce the risk of urea crystallization.

Benefits of technology

The pipeline design is simplified, the whole vehicle connection is convenient, the nozzle resistance to blockage is improved, the risk of urea crystallization is reduced, and the performance and reliability of the emission control system are improved.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a post-treatment catalytic silencer which comprises a catalytic silencer body, a nozzle, an injection pipe, a cooling liquid inlet pipe and a cooling liquid return pipe. One end of the nozzle is mounted on the catalytic silencer body and faces the interior of the catalytic silencer body; one end of the injection pipe is connected with the other end of the nozzle, and the other end of the injection pipe is used for being connected with an injection pump; one end of the cooling liquid inlet pipe is connected with the other end of the nozzle, and the other end of the cooling liquid inlet pipe is used for being connected with a cooling liquid supply mechanism; one end of the cooling liquid return pipe is connected with the other end of the nozzle, and the other end of the cooling liquid return pipe is used for being connected with the cooling liquid supply mechanism. Therefore, the after-treatment catalytic silencer is simple and reasonable in structure, a whole vehicle can be conveniently connected with a pipeline, the anti-blocking capacity of the nozzle is improved, and the risk of urea crystallization is reduced.
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