Split type after-treatment system with fixed support

Abstract

The utility model discloses a split type post-processing system with a fixed support, which is connected with an engine casing and comprises a first support, a second support, a third support and a fourth support. The first post-treatment system comprises an oxidation catalyst and a particle trap, and the first post-treatment system is fixed on the top surface of the first bracket; the second support comprises a second support platform and a supporting plate, and the supporting plate is fixed to the engine shell; the second post-treatment system comprises a selective catalytic reduction system, and the second post-treatment system is fixed on the top surface of the second bracket; wherein one end of the first post-processing system is communicated with an exhaust port of an engine, and the other end of the first post-processing system is communicated with the second post-processing system. According to the utility model, the limited installation device space in the cabin can be saved; particulate matter accumulation is avoided; the fixing strength of the post-treatment device is improved.

Description

Technical Field

[0001] The utility model relates to the field of engine after-treatment systems, in particular to a split after-treatment system fixed by a bracket. Background Art

[0002] The after-treatment system refers to the assembly of all devices that treat engine combustion exhaust gas. It is an exhaust gas treatment system added to meet the pollutant emission limits stipulated in national emission regulations.

[0003] The existing engine after-treatment system is set at the rear of the vehicle, far away from the engine, wasting the limited cabin space of the vehicle; and the pipeline connecting the engine to the after-treatment system is too long, which is easy to accumulate particulate matter and cause low after-treatment efficiency or blockage; the after-treatment system is heavy, and the fixing strength is low when it is simply fixed on the engine, which is easy to loosen.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a split post-processing system fixed by a bracket, which can solve the problems existing in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a split after-treatment system fixed by a bracket, which is connected to the engine casing, including: a first bracket, which is an integrally formed structure, the top surface of the first bracket is a horizontal plane, and the bottom is fixed on the engine casing; a first after-treatment system, which is a cylindrical structure, the first after-treatment system includes an oxidation catalyst and a particulate collector, the oxidation catalyst is connected to the particulate collector, and the first after-treatment system is fixed on the top surface of the first bracket; a second bracket, including a second bracket platform and a support plate, one end of the support plate is fixed to the engine casing, and the other end is connected to the second bracket platform, and the top surface of the second bracket platform is horizontally arranged; a second after-treatment system, which is a cylindrical structure, the second after-treatment system includes a selective catalytic reduction system, and the second after-treatment system is fixed on the top surface of the second bracket; wherein one end of the first after-treatment system is connected to the engine exhaust port, and the other end is connected to the second after-treatment system.

[0007] In one or more embodiments, the split after-treatment system fixed by a bracket further includes a third bracket and a filter; the top surface of the third bracket is a horizontal plane, and the filter is fixed on the top surface of the third bracket; wherein the filter is connected to the engine air intake.

[0008] In one or more embodiments, the split after-treatment system fixed by a bracket also includes multiple support pads, wherein one end of one or more of the support pads is fixed to the top of the engine casing, and the other end is fixed to the second bracket; one end of one or more of the support pads is fixed to the top of the engine casing, and the other end is fixed to the third bracket.

[0009] In one or more embodiments, the number of the support pads is 8, 4 of the support pads are fixed on the second bracket; 4 of the support pads are fixed on the third bracket, and the support pads are arranged at intervals.

[0010] In one or more embodiments, the support plate includes support side plates, the support side plates are arranged on both sides of the plane where the support plate is located, and the support side plates are arranged perpendicular to the support plate.

[0011] In one or more embodiments, screw holes are disposed on the second bracket platform and the top surface of the third bracket.

[0012] In one or more embodiments, the geometric axis of the first after-treatment system is arranged parallel to a horizontal plane; the geometric axis of the second after-treatment system is arranged parallel to a horizontal plane; the geometric axis of the first after-treatment system is arranged perpendicular to the geometric axis of the second after-treatment system.

[0013] In one or more embodiments, the height of the geometric axis of the first after-treatment system is lower than the height of the geometric axis of the second after-treatment system.

[0014] In one or more embodiments, the air inlet and the exhaust port are respectively disposed on opposite sides of the engine housing.

[0015] Compared with the prior art, the multiple technical solutions and embodiments provided by the present invention at least include the following technical effects or advantages:

[0016] By connecting the engine's after-treatment system and placing it close to the engine, the limited installation space in the cabin can be saved; the length of the pipeline connecting the engine to the after-treatment system can be reduced to avoid inefficient after-treatment or blockage caused by particle accumulation; by separating some devices of the after-treatment system, the weight of the after-treatment system is dispersed, the fixing strength is improved, and the limited space is effectively utilized; multiple brackets and support plates are set to fix the after-treatment system and the filter more firmly; the after-treatment system is gradually raised in height, and the principle of low density of hot gas is used to help the gas flow in the right direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and can be considered as illustrative of various combinations of preferred embodiments and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the overall structure of a split post-processing system fixed with a bracket provided by the utility model;

[0019] Figure 2 A rear-view overall structural schematic diagram of a split post-processing system fixed with a bracket provided by the utility model;

[0020] Figure 3 A schematic diagram of a main view of a bracket structure of a split post-processing system fixed with a bracket provided by the utility model;

[0021] Figure 4 A schematic diagram of the overall structure of a split post-processing system fixed with a bracket provided by the utility model from a top view;

[0022] Figure 5 A schematic diagram of a bracket structure from a side perspective of a split post-processing system fixed with a bracket provided by the utility model;

[0023] The numbers in the figure represent: 1-first bracket, 11-first after-treatment system, 21-second bracket platform, 22-support plate, 23-second after-treatment system, 3-third bracket, 31-filter, 4-engine casing, 5-support pad. DETAILED DESCRIPTION

[0024] Unless explicitly stated otherwise, throughout the specification and claims, the term "comprise" or its variations such as "include" or "comprising", "made of", etc. will be understood to include the stated elements or components but not to exclude other elements or other components.

[0025] The utility model aims to provide a split after-treatment system fixed by a bracket, which saves limited installation space in the cabin by connecting the after-treatment system of the engine and putting it close to the engine; reduces the length of the pipeline connecting the engine to the after-treatment system, avoids low after-treatment efficiency or blockage caused by accumulation of particulate matter; disperses the weight of the after-treatment system by separating some devices of the after-treatment system, improves the fixing strength, and effectively utilizes limited space; provides multiple brackets and support plates, fixes the after-treatment system and the filter more firmly; the after-treatment system gradually increases in height, utilizes the principle of low gas density, and helps the gas flow in the right direction.

[0026] Embodiment 1:

[0027] This embodiment provides a split post-processing system fixed by a bracket, such as Figures 1 to 5 As shown, it includes: a first bracket 1, which is an integrally formed structure, the top surface of the first bracket 1 is a horizontal plane, and the bottom is fixed on the engine casing 4; a first after-treatment system 11, which is a cylindrical structure, the first after-treatment system 11 includes an oxidation catalyst and a particulate collector, the oxidation catalyst is connected to the particulate collector, and the first after-treatment system 11 is fixed on the top surface of the first bracket 1; a second bracket, including a second bracket platform 21 and a support plate 22, one end of the support plate 22 is fixed to the engine casing 4, and the other end is connected to the second bracket platform 21, and the top surface of the second bracket platform 21 is horizontally arranged; a second after-treatment system 23, which is a cylindrical structure, the second after-treatment system 23 includes a selective catalytic reduction system, and the second after-treatment system 23 is fixed on the top surface of the second bracket; wherein, one end of the first after-treatment system 11 is connected to the engine exhaust port, and the other end is connected to the second after-treatment system 23. Preferably, the split after-treatment system fixed by a bracket further includes a third bracket 3 and a filter 31; the top surface of the third bracket 3 is a horizontal plane, and the filter 31 is fixed on the top surface of the third bracket 3; wherein the filter 31 is connected to the engine air intake.

[0028] Specifically, in order to save the limited installation space in the cabin, a first bracket 1 and a second bracket are provided to fix the after-treatment system on the top of the engine; further, the pipeline connecting the engine exhaust port to the after-treatment system is shortened, and the exhaust gas directly enters the after-treatment system, thereby avoiding the deposition of pollutants such as particulate matter in the pipeline, and the accumulation causing low post-treatment efficiency or blockage; further, since the after-treatment device and the engine are in the same cabin, the vehicle only needs a single cabin to meet the emission requirements, and this embodiment can be adapted to some non-road engineering machinery and agricultural machinery, thereby improving universality.

[0029] In order to increase the fixing strength of the after-treatment device, a split after-treatment system is used to separate the selective catalytic reduction system (SCR) from the oxidation catalyst (DOC) and the particulate filter (DPF), disperse the weight of the after-treatment system, improve the fixing strength, and effectively utilize the limited space; a plurality of brackets and support plates 22 are provided, and the support plate 22 is vertically arranged with the second bracket platform 21, and the support plate 22 is fixed on the engine casing 4, serving as a supporting leg of the second bracket, and serving to fix the after-treatment system and the filter 31 more firmly.

[0030] The first bracket 1 is an integrally formed structure, which means that the first bracket 1 is a prefabricated whole, and supports the first post-processing system 11 through structural strength; the top and the bottom refer to the height relationship relative to the ground.

[0031] As a preferred implementation of this embodiment, the split after-treatment system fixed by a bracket further includes a plurality of support pads 5, wherein one end of one or more of the support pads 5 is fixed to the top of the engine housing 4, and the other end is fixed to the second bracket; one end of one or more of the support pads 5 is fixed to the top of the engine housing 4, and the other end is fixed to the third bracket 3. Preferably, the number of the support pads 5 is 8, 4 of which are fixed to the second bracket; 4 of which are fixed to the third bracket 3, and the support pads 5 are arranged at intervals.

[0032] like Figure 3 As shown, specifically, the bracket is fixed only by the supporting legs, and the fixing strength is low. In order to increase the fixing strength, a supporting pad 5 with a certain deformation ability is provided. The supporting pads 5 are respectively arranged at intervals. Preferably, the supporting pads 5 are fixed at the four corners of the horizontal top surfaces of multiple brackets to provide multiple fulcrums to increase the fixing strength; the supporting pads 5 have elasticity in the vertical direction, and its purpose is that when the carrier is bumpy, the bracket is deformed, and the supporting pads 5 provide deformation resistance and restoring force to reduce the impact of the bumps on the bracket.

[0033] As a preferred implementation of this embodiment, the support plate 22 includes support side plates, which are arranged on both sides of the plane where the support plate 22 is located, and the support side plates are arranged perpendicular to the support plate 22. Specifically, in order to increase the strength of the support legs, this embodiment adopts plate-shaped support legs, but the plate-shaped support legs still have the problem of being easily broken laterally, so by arranging support side plates perpendicular to the support plate 22 and arranging them in a cross-shaped cross section, lateral breaking is avoided.

[0034] As a preferred implementation of this embodiment, screw holes are provided on the top surfaces of the second bracket platform 21 and the third bracket 3, the purpose of which is to facilitate the installation of the filter 31 and the post-processing system.

[0035] As a more preferred implementation of this embodiment, the geometric axis of the first post-processing system 11 is set parallel to the horizontal plane; the geometric axis of the second post-processing system 23 is set parallel to the horizontal plane; the geometric axis of the first post-processing system 11 is set perpendicular to the geometric axis of the second post-processing system 23.

[0036] like Figures 1 to 5 As shown, specifically, in order to reduce the volume of the after-treatment system, save space, and facilitate pipeline layout, the geometric centers of the cylindrical first after-treatment system 11 and the second after-treatment system 23 are perpendicular to each other, and the exhaust gas enters the second after-treatment system 23 along the shortest route after passing through the first after-treatment system 11, thereby reducing the layout length of the pipeline and saving space.

[0037] As a preferred implementation of this embodiment, the geometric axis height of the first post-processing system 11 is lower than the geometric axis height of the second post-processing system 23. Specifically, according to the principle that hot gas floats at low density, the exhaust gas emission route is gradually raised to facilitate the correct flow of exhaust gas in the exhaust direction.

[0038] As a preferred implementation manner of this embodiment, the air inlet and the exhaust port are respectively arranged on opposite sides of the engine housing 4.

[0039] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A split after-treatment system fixed by a bracket, connected to an engine casing, characterized in that: The split post-processing system fixed by the bracket includes: The first bracket is an integrally formed structure, the top surface of the first bracket is a horizontal plane, and the bottom is fixed on the engine casing; A first after-treatment system is a cylindrical structure, the first after-treatment system comprises an oxidation catalyst and a particulate trap, the oxidation catalyst is connected to the particulate trap, and the first after-treatment system is fixed to the top surface of the first bracket; A second bracket, comprising a second bracket platform and a support plate, wherein one end of the support plate is fixed to the engine housing, and the other end is connected to the second bracket platform, and the top surface of the second bracket platform is horizontally arranged; A second after-treatment system is a cylindrical structure, the second after-treatment system includes a selective catalytic reduction system, and the second after-treatment system is fixed on the top surface of the second bracket; One end of the first after-treatment system is connected to the engine exhaust port, and the other end is connected to the second after-treatment system.

2. A bracket-fixed split post-processing system as claimed in claim 1, characterized in that: It also includes a third bracket and a filter; the top surface of the third bracket is a horizontal plane, and the filter is fixed on the top surface of the third bracket; wherein the filter is connected to the engine air intake.

3. A bracket-fixed split post-processing system as claimed in claim 2, characterized in that: It also includes multiple support pads, wherein one end of one or more of the support pads is fixed to the top of the engine casing, and the other end is fixed to the second bracket; one end of one or more of the support pads is fixed to the top of the engine casing, and the other end is fixed to the third bracket.

4. A bracket-fixed split post-processing system as claimed in claim 3, characterized in that: The number of the support pads is 8, 4 of which are fixed on the second bracket; 4 of which are fixed on the third bracket, and the support pads are arranged at intervals.

5. The bracket-fixed split post-processing system according to claim 1, characterized in that: The support plate includes support side plates, the support side plates are arranged on both sides of the plane where the support plate is located, and the support side plates are arranged perpendicular to the support plate.

6. The bracket-fixed split post-processing system according to claim 1, characterized in that: The second bracket platform and the top surface of the third bracket are provided with screw holes.

7. A bracket-fixed split post-processing system according to any one of claims 1 to 6, characterized in that: The geometric axis of the first post-processing system is arranged parallel to the horizontal plane; the geometric axis of the second post-processing system is arranged parallel to the horizontal plane; the geometric axis of the first post-processing system is arranged perpendicular to the geometric axis of the second post-processing system.

8. A bracket-fixed split post-processing system as claimed in claim 7, characterized in that: The height of the geometric axis of the first post-processing system is lower than the height of the geometric axis of the second post-processing system.

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