Exhaust system structure suitable for vertical rear-drive pickup truck type arrangement

Abstract

The utility model provides an exhaust system structure suitable for arrangement of a vertical rear-drive pickup truck type, and belongs to the technical field of production and manufacturing of automobile accessories. The exhaust system is reasonable in structural layout, compact in structure and high in installation stability. The structure comprises a three-way catalytic converter, a heat insulation cover, a corrugated pipe, a lifting lug bracket and a mounting bracket, the corrugated pipe is connected to the air outlet end of the three-way catalytic converter, the lifting lug support and the mounting support are both fixedly arranged on the three-way catalytic converter, and the heat insulation cover is arranged outside the three-way catalytic converter in a wrapping mode and avoids the lifting lug support and the mounting support. According to the exhaust system structure, the span between mounting points is increased, and the mounting stability is improved; a thermal deformation space is reserved between the system and the engine, and a heat shield is arranged, so that the operation safety of the system is improved; the system is arranged by being attached to the engine, and the outer contour size of the engine is effectively compressed.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts production and manufacturing, and particularly relates to an exhaust system structure suitable for the arrangement of an upright rear-drive pickup truck model. Background Art

[0002] Compared with naturally aspirated engines, supercharged engines have higher torque and power in the same volume. In order to meet the demand for supercharged engines in the automotive market, the popularity of supercharged engines has become higher and higher. At the same time, the requirements for the exhaust system layout of supercharged engines have become more and more stringent. If the problem of unreasonable layout of the exhaust system cannot be perfectly solved, it will lead to an increase in the failure rate of the three-way catalytic converter and an increase in the after-sales cost of the car company, which is not conducive to the company's market promotion and reduces the company's core competitiveness. Utility Model Content

[0003] In order to solve the problems existing in the above-mentioned background technology, the utility model provides an exhaust system structure suitable for the arrangement of an upright rear-wheel drive pickup truck model. The exhaust system structure has a reasonable layout, a compact structure and high installation stability.

[0004] The utility model adopts the following technical solution to solve the technical problem: an exhaust system structure suitable for an upright rear-wheel drive pickup truck, comprising a three-way catalytic converter, a heat shield, a bellows, a lifting lug bracket and a mounting bracket; the bellows is connected to the outlet end of the three-way catalytic converter, the lifting lug bracket and the mounting bracket are both fixedly arranged on the three-way catalytic converter, the heat shield is arranged to cover the outside of the three-way catalytic converter, and avoids the lifting lug bracket and the mounting bracket.

[0005] The exhaust system structure suitable for the upright rear-wheel drive pickup truck model also includes an EGR air intake pipe; the EGR air intake pipe is arranged on the tail pipe of the rear end cone of the three-way catalytic converter and is ventilatedly connected to the EGR cooler through a pipeline.

[0006] A transition bracket is arranged on the front end cone of the three-way catalytic converter, and the lifting ear bracket is fixedly arranged on the transition bracket.

[0007] The beneficial effects of the utility model are as follows: the exhaust system structure increases the span between installation points and improves installation stability by combining a transition bracket, a hanging ear bracket and a mounting bracket; a heat deformation space is reserved between the system and the engine, and the risk of exhaust system structure crack failure is low; a heat insulation cover is provided to effectively avoid the risk of heat damage; the system is laid out in close proximity to the engine, effectively compressing the external contour dimensions of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In the attached picture:

[0009] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0010] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0011] Figure 3 This is a schematic diagram of the transition bracket structure of the utility model;

[0012] In the figure: 1. three-way catalytic converter; 2. heat shield; 3. bellows; 4. lifting ear bracket; 5. mounting bracket; 6. EGR air intake pipe; 7. transition bracket; 71. fixing seat; 72. adjustment seat; 73. bolt assembly one; 74. bolt assembly two. DETAILED DESCRIPTION

[0013] The utility model is now described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0014] An exhaust system structure suitable for an upright rear-wheel drive pickup truck model includes a three-way catalytic converter 1, a heat shield 2, a bellows 3, a lifting lug bracket 4 and a mounting bracket 5; the bellows 3 is connected to the outlet end of the three-way catalytic converter 1, the lifting lug bracket 4 and the mounting bracket 5 are both fixedly arranged on the three-way catalytic converter 1, and the heat shield 2 is arranged to cover the outside of the three-way catalytic converter 1 and avoid the lifting lug bracket 4 and the mounting bracket 5.

[0015] The air inlet end of the three-way catalytic converter 1 is provided with a front end cone, and the air outlet end is provided with a rear end cone. The ear bracket 4 is fixedly arranged on the front end cone, and the mounting bracket 5 is fixedly arranged on the rear end cone. The ear bracket 4 and the mounting bracket 5 are both arranged close to the three-way catalytic converter 1. The ear bracket 4 and the mounting bracket 5 are both located inside the cylindrical structure formed along the axis of the outer surface of the three-way catalytic converter 1. Specifically, the mounting bracket 5 is specifically arranged at the junction of the cylinder body and the rear end cone of the three-way catalytic converter 1, and is located on the left side of the three-way catalytic converter 1. The transition bracket 7 is arranged on the front end cone of the three-way catalytic converter 1 and is located on the right side. The ear bracket 4 is arranged on the transition bracket 7. There is a large span between the ear bracket 4 and the mounting bracket 5, which is beneficial to improving the installation stability of the system structure.

[0016] The exhaust system structure suitable for the upright rear-wheel drive pickup truck model also includes an EGR air intake pipe 6; the EGR air intake pipe 6 is arranged on the tail pipe of the rear end cone of the three-way catalytic converter 1, and is ventilatedly connected to the EGR cooler through a pipeline. The EGR air intake pipe 6 is arranged on the tail pipe to form an air intake form after the three-way catalytic converter 1, which effectively suppresses the engine knock and reduces NOX emissions, which is conducive to meeting the requirements of the National VIb emission regulations.

[0017] A transition bracket 7 is arranged on the front end cone of the three-way catalytic converter 1 , and the lifting ear bracket 4 is fixedly mounted on the transition bracket 7 .

[0018] The transition bracket 7 includes a fixed seat 71 and an adjustment seat 72; the fixed seat 71 is fixedly set on the front end cone, the adjustment seat 72 is rotatably installed on the fixed seat 71, and is fastened by a bolt assembly 1 73, the ear bracket 4 is detachably mounted on the adjustment seat 72 by a bolt assembly 2 74, and the fixed seat 71 is fixedly set on the front end cone by welding.

[0019] After the transition bracket 7 is fixed on the front end cone, the ear bracket 4 is installed on the transition bracket. When the exhaust system structure as a whole is installed and fixed, the bolt assembly 2 74 remains locked and the bolt assembly 1 73 is loosened. After the exhaust system structure as a whole is accurately positioned and the ear bracket 4 and the mounting bracket 5 are connected to the corresponding connection points, the bolt assembly 1 73 is locked. At this time, the exhaust system structure as a whole will be arranged on the engine in the optimal posture.

[0020] The exhaust system structure is installed close to the engine cylinder as a whole, and is specifically arranged between the engine cylinder head ear and the engine cylinder bracket. The exhaust system structure arranges the transition bracket 7, the ear bracket 4 and the mounting bracket 5 on the three-way catalytic converter 1, so that the three-way catalytic converter 1 is arranged close to the engine cylinder, effectively compressing the external contour size of the engine; the combined transition bracket 7, the ear bracket 4 and the mounting bracket 5 provide tolerances for the exhaust system structure in the three directions of X / Y / Z, making the installation easier and more convenient while ensuring the stability of the overall installation of the system structure. In addition, by combining the transition bracket 7, the ear bracket 4 and the mounting bracket 5, the exhaust system structure is provided with a space for thermal deformation while ensuring the compactness of the installation, reducing the risk of crack failure in the exhaust system; at the same time, the bellows 3 is arranged as close to the three-way catalytic converter 1 as possible, effectively reducing the system counterweight and effectively improving the system mode; the heat shield 2 adopts a full wrapping solution for the exhaust system structure except for the bellows, which can effectively avoid the risk of thermal damage.

[0021] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An exhaust system structure suitable for upright rear-wheel drive pickup trucks, characterized in that: The invention comprises a three-way catalytic converter (1), a heat shield (2), a bellows (3), a hanging ear bracket (4) and a mounting bracket (5); the bellows (3) is connected to the gas outlet end of the three-way catalytic converter (1), the hanging ear bracket (4) and the mounting bracket (5) are both fixedly arranged on the three-way catalytic converter (1), and the heat shield (2) is arranged to cover the outside of the three-way catalytic converter (1) and avoid the hanging ear bracket (4) and the mounting bracket (5).

2. The exhaust system structure suitable for upright rear-wheel drive pickup truck according to claim 1, characterized in that: The air inlet end of the three-way catalytic converter (1) is provided with a front cone, and the air outlet end is provided with a rear cone, the ear bracket (4) is fixedly arranged on the front cone, and the mounting bracket (5) is fixedly arranged on the rear cone.

3. The exhaust system structure suitable for upright rear-wheel drive pickup truck according to claim 2, characterized in that: The exhaust system structure suitable for the upright rear-wheel drive pickup truck model also includes an EGR air intake pipe (6); the EGR air intake pipe (6) is arranged on the tail pipe of the rear end cone of the three-way catalytic converter (1) and is ventilatedly connected to the EGR cooler through a pipeline.

4. The exhaust system structure suitable for upright rear-wheel drive pickup truck according to claim 2, characterized in that: A transition bracket (7) is arranged on the front end cone of the three-way catalytic converter (1), and the hanging ear bracket (4) is fixedly mounted on the transition bracket (7).

5. The exhaust system structure suitable for upright rear-wheel drive pickup truck according to claim 4, characterized in that: The transition bracket (7) comprises a fixed seat (71) and an adjustment seat (72); the fixed seat (71) is fixedly arranged on the front end cone, the adjustment seat (72) is rotatably mounted on the fixed seat (71) and is fastened by a bolt assembly (73); the hanging ear bracket (4) is detachably mounted on the adjustment seat (72) by a bolt assembly (74).

Images