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Diesel engine post-processing device

A post-processing device and diesel engine technology, applied in the direction of mufflers, exhaust devices, mechanical equipment, etc., can solve problems such as blocked exhaust pipes and engine failures, achieve unobstructed exhaust pipes, improve anti-crystallization ability, and avoid engine failures Effect

Inactive Publication Date: 2018-01-30
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are often urea crystals on the pipeline of the blue pipe, which can block the exhaust pipe and cause serious engine failure

Method used

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  • Diesel engine post-processing device

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Embodiment Construction

[0010] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0011] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0012] Such as figure 1 As shown, a diesel engine aftertreatment device according to a specific embodiment of the present invention includes: a catalytic muffler 1 and a supercharger 2, the supercharger 2 is connected to the catalytic muffler 1 through an exhaust pipe, and the exhaust pipe includes a mixing pipe 31 , the first curved pipe 33, the second curved pipe 32 and the rear straight pipe 34, wherein the mixing pipe ...

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Abstract

The invention discloses a diesel engine post-processing device, comprising a catalytic muffler, a booster and an exhaust pipeline connected together. The exhaust pipeline comprises: a mixing pipe positioned in the middle of the exhaust pipeline, wherein a mixing core is embedded in the mixing pipe to form a mixer, the wall of the mixing pipe is obliquely provided with a nozzle; a first bend that bends down and that connects the booster and the mixing pipe, wherein the first bend and the mixing pipe are uniform in diameter, a corrugated segment is provided between the first bend and the booster, and the bending radius of the first bend is greater than diameter of the mixing pipe; a second bend connected with the catalytic muffler, wherein the bending radius of the second bend is greater than the diameter of the mixing pipe, and the length of the second bend is 2.5 times as great as the diameter of the mixing pipe; and a rear straight pipe that connects the second bend and the mixing pipe, wherein the length of the rear straight pipe is twice as great as the diameter of the mixing pipe, and the diameter of the rear straight pipe is equal to that of the mixing pipe. The diesel enginepost-processing device provides improved anti-crystallization capacity for urea.

Description

technical field [0001] The invention relates to the field of diesel engine exhaust aftertreatment, in particular to a diesel engine aftertreatment device. Background technique [0002] In the post-treatment of diesel engine exhaust, the SCR scheme has obvious advantages in the national IV diesel vehicle exhaust emission treatment system, and urea (Tianlan) for vehicles is a necessary additive for the SCR scheme. Tianlan pipe is a pipeline connecting Tianlan tank, metering jet pump and nozzle for Tianlan to flow inside the system. At present, there are often urea crystals on the pipeline of the blue pipe, which can block the exhaust pipe and cause serious engine failure. [0003] The information disclosed in this Background section is only for enhancing the understanding of the general background of the present invention and should not be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/28F01N13/08
Inventor 黄第云沈捷黄永仲李伟
Owner GUANGXI YUCHAI MASCH CO LTD
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