Engine aftertreatment fixture

Abstract

The application relates to the technical field of engines and discloses an engine aftertreatment fixing structure, which comprises an aftertreatment assembly and an engine cylinder head, the top of the engine cylinder head is provided with an engine support through bolt fixing, and the engine support further comprises: support one which is fixedly arranged on one side of the aftertreatment assembly through screws and is provided with support two through bolt fixing, one end of the support two is fixedly connected with one side of the engine cylinder head through screws; support three which is fixedly arranged on the aftertreatment assembly at one end and is provided with support five at the front end through bolt fixing. The required aftertreatment assembly is connected through the arrangement of the support one and the support two and the support three and the support five, the intermediate body is connected in a separated mode, on one hand, a certain installation gap is formed, collision between the two is avoided, and the stability of the aftertreatment assembly installation and the passability and reliability of the whole vehicle are ensured through the connection and support between the components.

Description

Technical Field

[0001] This invention relates to the field of engine technology, specifically to a fixed structure for engine aftertreatment. Background Technology

[0002] As a key device for reducing harmful pollutants in exhaust gases, the engine aftertreatment system utilizes the synergistic effects of components such as DOC (diesel oxidation catalyst), DPF (particulate filter), SCR (selective catalytic reduction), and ASC (ammonia scavenger) to convert harmful emissions into harmless substances such as carbon dioxide, water, and nitrogen through catalytic conversion, filtration, and other physicochemical mechanisms. The stable operation of the engine aftertreatment system highly depends on a reliable mounting device. An aftertreatment mounting device is a fixture used to secure the engine aftertreatment unit to the vehicle frame longitudinal beams via brackets, ensuring installation stability and the vehicle's passability and reliability. However, existing mounting devices have some shortcomings, as follows:

[0003] The aftertreatment system is usually located in the engine exhaust system, specifically after the engine exhaust manifold, near the rear of the vehicle. The aftertreatment system is fixed to the chassis by brackets to ensure the stability of the installation and the passability and reliability of the whole vehicle. For some vehicle structures, the aftertreatment system can only be placed in the cab (top of the engine), usually fixed by the exhaust bend, which cannot guarantee the stability of the installation and the reliability of the whole vehicle. Summary of the Invention

[0004] This invention provides an engine aftertreatment fixing structure that has the advantages of high installation stability and high vehicle passability and reliability, thus solving the problems mentioned in the background art.

[0005] This invention provides the following technical solution: an engine aftertreatment fixing structure, including an aftertreatment assembly and an engine cylinder head, wherein an engine bracket is fixedly mounted on the top of the engine cylinder head by bolts, and further comprising: a bracket one, which is fixedly mounted on one side of the aftertreatment assembly by screws, and a bracket two, one end of which is fixedly connected to one side of the engine cylinder head by screws; a bracket three, one end of which is fixedly mounted on the aftertreatment assembly, and a bracket five, the lower end of which is fixed to the front end of the engine cylinder head; and an exhaust bend, which is fixedly mounted on the aftertreatment assembly by bolts, and an exhaust pipe is fixedly mounted on its other end.

[0006] Preferably, the exhaust bend has a through hole inside, and the aftertreatment assembly is connected to the exhaust pipe through the through hole exhaust bend, so that the exhaust gas can be discharged from the aftertreatment assembly to the exhaust pipe.

[0007] Preferably, the second bracket includes a bracket body, which is L-shaped. One end of the bracket body has a connecting hole, which is an oblong hole. When the bracket body is connected and fixed to the first bracket with bolts, the space at both ends of the aftertreatment assembly can be adjusted. The other end of the bracket body has a connecting hole through which bolts can be inserted for fixing the bracket body to the exhaust pipe. The bracket body has through holes for fixing components such as wiring harnesses and ECUs, and can also be used to reduce the weight of the bracket.

[0008] Preferably, a bracket six is ​​fixedly mounted on the bracket five by bolts, and the bracket six is ​​fixedly connected to one end of the engine bracket by bolts. The top of the bracket six is ​​provided with a through hole for fixing wiring harnesses, etc.

[0009] Preferably, a bracket four is fixedly installed at the bottom of the engine cylinder head and on one side of the bracket three by bolts. The bracket four is composed of three connecting plates, and the angle between two adjacent connecting plates is 135 degrees. The bracket six has through holes for fixing wire harnesses, oil-gas separator outlet hoses or steel pipes, which can be used to reduce the weight of the bracket.

[0010] Preferably, a rear lifting lug is fixedly installed on the engine cylinder head and on one side of the bracket two by screws, and one end of the rear lifting lug is arc-shaped and has a lifting hole. A front lifting lug is fixedly installed on the outer side of the bracket five by bolts, and one end of the front lifting lug also has a lifting hole.

[0011] Preferably, an engine pad is fixed between the bracket three and the aftertreatment assembly, and is located on the bolt connecting the two, for adjustment.

[0012] Preferably, reinforcing ribs are fixedly provided at the stress-bearing positions of bracket one, bracket body, exhaust bend, bracket six, and engine pad, and bracket one, exhaust bend, bracket six, and engine pad are all castings.

[0013] Preferably, the engine pad includes a right connecting block and a left connecting block. A piston rod is fixedly installed on one side of the right connecting block. A piston hole that mates with the piston rod is opened inside the left connecting block. A pressure valve is fixedly installed on the left connecting block. The two sides of the pressure valve are connected to the piston hole through conduits. A sensor is fixedly installed on the pressure valve.

[0014] The present invention has the following beneficial effects:

[0015] The brackets 1, 2, 3, and 5 are used to connect the required aftertreatment assemblies. The separate connecting intermediate body creates a certain installation gap to prevent collisions between the components. The connection support between the components ensures the stability of the aftertreatment assembly installation and the passability and reliability of the entire vehicle. Reinforcing ribs and through holes are added. The former enhances the strength of the components and prevents the brackets from breaking, causing the aftertreatment assembly to fall off or crack. The latter provides an extended function for fixing wiring harnesses, pipes, lifting lugs, and other components. At the same time, the connection holes and engine pads allow for adjustment of the aftertreatment assembly's vertical, horizontal, frontal, and rear clearances, and facilitate assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention from the left.

[0017] Figure 2 This is a bottom view of the overall structure of the present invention;

[0018] Figure 3 This is a left-side view of the connection structure of the post-processing assembly of the present invention;

[0019] Figure 4 This is a top view of the connection structure of the post-processing assembly of the present invention;

[0020] Figure 5 This is a schematic diagram of the second structural support of the present invention;

[0021] Figure 6 This is a schematic diagram of the exhaust bend of the present invention;

[0022] Figure 7 This is a schematic diagram of the installation of bracket five and bracket six of the present invention;

[0023] Figure 8 This is a schematic diagram of the engine pad block structure of the present invention;

[0024] Figure 9 This is a schematic diagram of the explosion of the engine pad block of the present invention.

[0025] In the diagram: 1. Aftertreatment assembly; 2. Bracket 1; 3. Bracket 2; 31. Bracket body; 32. Connecting hole; 33. Bolt hole; 34. Through hole; 4. Rear end hanger; 5. Exhaust bend; 6. Bracket 3; 7. Bracket 4; 8. Bracket 5; 9. Bracket 6; 10. Front hanger; 11. Engine pad; 111. Right connecting block; 112. Left connecting block; 113. Piston hole; 114. Piston rod; 115. Pressure valve; 12. Engine cylinder head; 13. Exhaust pipe; 14. Connecting base frame; 15. EGR exhaust bend; 16. Fastener; 17. Turbocharger inlet pipe; 18. Engine bracket. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-9 An engine aftertreatment fixing structure includes an aftertreatment assembly 1 and an engine cylinder head 12, with an engine bracket 18 fixedly mounted on the top of the engine cylinder head 12 by bolts. The structure also includes: a bracket 2, which is fixedly mounted on one side of the aftertreatment assembly 1 by screws, and a bracket 3, which is fixedly mounted on one side of the engine cylinder head 12 by bolts; a bracket 6, which is fixedly mounted on the aftertreatment assembly 1 at one end, and a bracket 8, which is fixedly mounted on the front end of the aftertreatment assembly 1 by bolts, with the lower end of the bracket 8 fixed to the front end of the engine cylinder head 12; and an exhaust bend 5, which is fixedly mounted on the aftertreatment assembly 1 by bolts, and an exhaust pipe 13 is fixedly mounted on the other end of the bend 5.

[0028] First, bracket 1 (2) is bolted to one side of the aftertreatment assembly 1. Then, bracket 2 (3) is bolted to the engine cylinder head 12. The other end of bracket 2 (3) is then bolted to bracket 1 (2). Similarly, on the other side of the aftertreatment assembly 1, bracket 3 (6) is bolted to the aftertreatment assembly 1, and bracket 5 (8) is bolted to the engine cylinder head 12. The other end of bracket 5 (8) is bolted to bracket 3 (6). Thus, both sides of the aftertreatment assembly 1 are connected and fixed to the engine cylinder head 12 via bracket 1 (2), bracket 2 (3), bracket 3 (6), and bracket 5 (8), respectively. This connection and fixation between the aftertreatment assembly 1 and the engine cylinder head 12 ensures the stability of the aftertreatment assembly 1 installation and the passability and reliability of the entire vehicle.

[0029] The exhaust bend 5 has a through hole inside, and the aftertreatment assembly 1 is connected to the exhaust pipe 13 through the exhaust bend 5. The exhaust gas can be discharged from the aftertreatment assembly 1 to the exhaust pipe 13. The exhaust bend 5 serves as a gas transmission component between the aftertreatment assembly 1 and the exhaust pipe 13. It not only serves as a pipeline for transmission, but also as a support structure for the aftertreatment assembly 1 to strengthen the connection strength of the aftertreatment assembly 1 and improve the stability of the aftertreatment assembly 1.

[0030] The second bracket 3 includes a bracket body 31, which is L-shaped. One end of the bracket body 31 has a connecting hole 32, which is an oblong hole. When the bracket body 31 is connected and fixed to the first bracket 2 by bolts, the space at both ends of the aftertreatment assembly 1 can be adjusted. The other end of the bracket body 31 has a connecting hole 32 for inserting bolts for fixing the bracket body 31 to the exhaust pipe 13. A connecting base 14 can also be fitted onto one of the bolts in the connecting hole 32, and an EGR exhaust bend 15 is provided on the connecting base 14. A fastener 16 is fitted onto the other bolt in the connecting hole 32, and a turbocharger oil inlet pipe 17 is provided on the fastener 16. The bracket body 31 has through holes 34 for fixing wiring harnesses, ECUs and other components. It can also be used to reduce the weight of the bracket. The L-shaped bracket body 31 serves as the main body and is mounted between the bracket 2 and the engine cylinder head 12 for connection between the two. It is located on the bolt at the connection hole 32. Other connecting parts can be added to fix the EGR exhaust pipe component, turbocharger oil inlet pipe component, etc. While ensuring the connection strength between the aftertreatment assembly 1 and the engine cylinder head 12, a connecting base frame 14 and fastener 16 can be added to establish connections with other components, thereby strengthening the structural integrity of the entire system and increasing the structural stability of the aftertreatment assembly 1 as well as the passability and reliability of the vehicle.

[0031] A bracket 6 9 is fixedly mounted on bracket 5 8 by bolts, and bracket 6 9 is fixedly connected to one end of engine bracket 18 by bolts. A through hole is opened on the top of bracket 6 9 for fixing wiring harnesses, etc. Similarly, bracket 6 9 is used to form a connection with engine bracket 18. Since engine bracket 18 is fixed on engine cylinder head 12, bracket 6 9 is used to further strengthen the overall structural connection strength.

[0032] A bracket 7 is bolted to the bottom of the engine cylinder head 12 and to one side of the bracket 3 6. The bracket 4 7 consists of three connecting plates with an angle of 135 degrees between adjacent connecting plates. The bracket 6 9 has through holes for fixing wiring harnesses, oil-gas separator outlet hoses or steel pipes. It can also be used to reduce the weight of the bracket. The bracket 4 7 is fixed under the engine cylinder head 12. With its multiple bends and through holes, the pipelines and wiring harnesses between the aftertreatment assembly 1 and the engine cylinder head 12 can be fixed, which enhances the neatness of the wiring connections of the entire system and facilitates later management.

[0033] A rear lifting lug 4 is fixedly installed on the engine cylinder head 12 and on one side of the bracket 2 3 by screws. One end of the rear lifting lug 4 is arc-shaped and has a lifting hole. A front lifting lug 10 is fixedly installed on the outside of the bracket 5 8 by bolts. One end of the front lifting lug 10 also has a lifting hole. With the lifting holes on the rear lifting lug 4 and the front lifting lug 10, the engine cylinder head 12 can be lifted by both, improving the convenience of equipment installation.

[0034] An engine pad 11 is fixedly installed between the bracket 36 and the aftertreatment assembly 1, and is located on the bolt connecting the two. It is used for adjustment, and forms a fit with the connecting hole 32. It is used to adjust the distance between the front and rear ends of the aftertreatment assembly 1, and provides support for the fixing bolts used to connect the bracket 36 and the aftertreatment assembly 1 to achieve the effect of preventing loosening.

[0035] Reinforcing ribs are fixedly installed at the stress-bearing positions of bracket 12, bracket body 31, exhaust bend 5, bracket 69, and engine pad 11. All of these components are castings. By adding reinforcing ribs, the strength of the components is enhanced, thereby increasing their service life and improving the safety of the connection.

[0036] The engine block 11 includes a right connecting block 111 and a left connecting block 112. A piston rod 114 is fixedly mounted on one side of the right connecting block 111. A piston hole 113 that mates with the piston rod 114 is opened inside the left connecting block 112. A pressure valve 115 is fixedly mounted on the left connecting block 112. The two sides of the pressure valve 115 are connected to the piston hole 113 through conduits. A sensor is fixedly mounted on the pressure valve 115. Hydraulic oil of a certain pressure is injected into the piston hole 113 through the pressure valve 115, thereby causing the right connecting block 112 to move. Connecting block 111 and left connecting block 112 are opened, and then they press against bracket 3 6 and after-processing assembly 1 respectively, with a certain pressing pressure, thereby filling the gap between them. At the same time, during daily use, if the gap between bracket 3 6 and after-processing assembly 1 becomes larger and loose, the pressure on pressure valve 115 changes. Then the sensor on pressure valve 115 transmits the signal to the vehicle machine, thereby issuing a warning, which facilitates timely maintenance and tightening by operators, further improving the safety of equipment use.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An engine aftertreatment fixing structure, comprising an aftertreatment assembly (1) and an engine cylinder head (12), wherein an engine bracket (18) is bolted to the top of the engine cylinder head (12), characterized in that: Also includes: Bracket 1 (2) is fixedly mounted on one side of the aftertreatment assembly (1) by screws, and bracket 2 (3) is fixedly mounted on it by bolts. One end of bracket 2 (3) is fixedly connected to one side of the engine cylinder head (12) by screws. Bracket 3 (6) has one end fixed on the aftertreatment assembly (1) and bracket 5 (8) fixed at the front end by bolts. The lower end of bracket 5 (8) is fixed to the front end of the engine cylinder head (12). An exhaust bend (5) is fixedly mounted on the aftertreatment assembly (1) by bolts, and an exhaust pipe (13) is fixedly mounted on its other end.

2. The engine aftertreatment fixing structure according to claim 1, characterized in that: The exhaust bend (5) has a through hole inside, and the aftertreatment assembly (1) is connected to the exhaust pipe (13) through the exhaust bend (5), so that the exhaust gas can be discharged from the aftertreatment assembly (1) to the exhaust pipe (13).

3. The engine aftertreatment fixing structure according to claim 1, characterized in that: The bracket two (3) includes a bracket body (31), and the bracket body (31) is L-shaped. One end of the bracket body (31) is provided with a connecting hole (32), and the connecting hole (32) is a waist-shaped hole. When the bracket body (31) is connected and fixed to the bracket one (2) by bolts, the space at both ends of the aftertreatment assembly (1) can be adjusted. The other end of the bracket body (31) is provided with a connecting hole (32) through which bolts can be inserted. Bolts can be inserted for fixing between the bracket body (31) and the exhaust pipe (13). The bracket body (31) is provided with a through hole (34) for fixing components such as wiring harnesses and ECUs, and can also be used to reduce the weight of the bracket.

4. The engine aftertreatment fixing structure according to claim 1, characterized in that: The bracket five (8) is fixedly mounted with a bracket six (9) by bolts, and the bracket six (9) is fixedly connected to one end of the engine bracket (18) by bolts. The top of the bracket six (9) is provided with a through hole for fixing wire harness pipelines, etc.

5. The engine aftertreatment fixing structure according to claim 1, characterized in that: The engine cylinder head (12) is fixed to the bottom of the bracket three (6) by bolts, and the bracket four (7) is composed of three connecting plates, and the angle between two adjacent connecting plates is 135 degrees. The bracket six (9) has through holes for fixing wire harnesses, oil-gas separator outlet hoses or steel pipes, which can be used to reduce the weight of the bracket.

6. The engine aftertreatment fixing structure according to claim 1, characterized in that: The engine cylinder head (12) is fixedly installed with a rear end lug (4) by screws on one side of the bracket two (3), and one end of the rear end lug (4) is arc-shaped and has a lifting hole. The outer side of the bracket five (8) is fixed with a front lug (10) by bolts, and one end of the front lug (10) also has a lifting hole.

7. The engine aftertreatment fixing structure according to claim 1, characterized in that: An engine pad (11) is fixed between the bracket three (6) and the aftertreatment assembly (1) and is located on the bolt connecting the two for adjustment.

8. The engine aftertreatment fixing structure according to claim 7, characterized in that: The support frame 1 (2), support body (31), exhaust bend (5), support frame 6 (9) and engine pad (11) are all fixedly equipped with reinforcing ribs at the stress-bearing positions, and the support frame 1 (2), exhaust bend (5), support frame 6 (9) and engine pad (11) are all castings.

9. The engine aftertreatment fixing structure according to claim 7, characterized in that: The engine pad (11) includes a right connecting block (111) and a left connecting block (112). A piston rod (114) is fixedly installed on one side of the right connecting block (111). A piston hole (113) that mates with the piston rod (114) is opened inside the left connecting block (112). A pressure valve (115) is fixedly installed on the left connecting block (112). The two sides of the pressure valve (115) are connected to the piston hole (113) through conduits. A sensor is fixedly installed on the pressure valve (115).

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