Exhaust manifold beneficial to improving performance of whole machine

Abstract

The utility model discloses an exhaust manifold beneficial to improving the performance of a whole machine, and belongs to the technical field of automobile exhaust systems. The upper ends of the three branch pipes are communicated with three air inlet holes formed in the front flange respectively, the three branch pipes extend downwards, the lower ends of the three branch pipes are all communicated with an air inlet of the gathering pipe, an air outlet of the gathering pipe is communicated with an air outlet hole formed in the rear flange, and a ternary front air taking guide pipe is arranged on the rear flange. The ternary front gas taking guide pipe is used for connecting the gathering pipe and a gas taking hole formed in the rear flange, and the oxygen sensor mounting seat is fixed on the upper end surface of the gathering pipe. The three-in-one branch pipe gathering mode is adopted, exhaust interference can be reduced, the three-way front gas taking guide pipe of the exhaust manifold is additionally arranged, the three-way front gas taking mode of the EGR cooler is designed, oil consumption of the whole engine is improved, the overall structure of the branch pipes is downward, the occupied space of an exhaust system is reduced, the trend of the exhaust manifold is better, and the service life of the exhaust manifold is prolonged. And the exhaust back pressure is lower, and the performance of the engine is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile exhaust systems, and in particular relates to an exhaust manifold which is beneficial to improving the performance of the entire machine. Background Art

[0002] At present, stainless steel exhaust manifold assemblies have been widely used in automobile exhaust systems, and are divided into close-coupled exhaust manifolds and non-close-coupled exhaust manifolds. Close-coupled exhaust manifolds take up a large space, have high requirements on the engine and cabin boundaries, and affect the spatial layout of the entire engine; non-close-coupled exhaust manifolds are prone to airflow interference and high back pressure problems, and the design needs to be improved to reduce airflow turbulence and improve engine performance. Utility Model Content

[0003] In order to solve the above problems, the utility model further provides an exhaust manifold which is beneficial to improving the performance of the whole machine.

[0004] The technical solution adopted by the utility model is:

[0005] An exhaust manifold that is beneficial to improving the performance of the entire machine, includes a collecting pipe, a rear flange, a front method, an oxygen sensor mounting seat and three branch pipes; the upper ends of the three branch pipes are respectively connected to three air inlet holes provided on the front flange, the three branch pipes extend downward, and the lower ends of the three branch pipes are all connected to the air inlet of the collecting pipe, the exhaust port of the collecting pipe is connected to the exhaust holes provided on the rear flange, the rear flange is provided with a three-way front air intake duct, the three-way front air intake duct is used to connect the collecting pipe and the air intake holes opened on the rear flange, and the oxygen sensor mounting seat is fixed to the upper end surface of the collecting pipe.

[0006] Compared with the prior art, the utility model has the following beneficial effects:

[0007] The utility model adopts a 3-in-1 branch pipe aggregation form to reduce exhaust interference. The utility model increases a three-way front air intake duct of the exhaust manifold and designs a three-way front air intake method for the EGR cooler to improve the overall fuel consumption of the engine. The overall structure of the branch pipe of the utility model is downward, which reduces the space occupied by the exhaust system. The exhaust manifold has a better direction and lower exhaust back pressure, which effectively improves the engine performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 It is the front view of the utility model;

[0010] Figure 3 It is a side view of the utility model;

[0011] Among them: 1. front flange; 2. first branch pipe; 3. second branch pipe; 4. third branch pipe; 5. collecting pipe; 6. three-element front air intake duct; 7. rear flange; 701, exhaust hole; 702, air intake hole; 8. stud; 9. oxygen sensor mounting base; 10. heat shield bracket. DETAILED DESCRIPTION

[0012] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0013] like Figure 1 to Figure 3 As shown, the utility model provides an exhaust manifold that is beneficial to improving the performance of the whole machine, including a collecting pipe 5, a rear flange 7, a front flange 1, an oxygen sensor mounting seat 9 and three branch pipes; the upper ends of the three branch pipes are respectively connected to the three air inlet holes provided on the front flange 1, the three branch pipes extend downward, and the lower ends of the three branch pipes are all connected to the air inlet of the collecting pipe 5, and the exhaust port of the collecting pipe 5 is connected to the exhaust hole 701 provided on the rear flange 7. Considering the clearance matching requirements between various components around the engine exhaust manifold assembly and the assembly into the four-cylinder DAM16NL development model, a three-way front air intake method of the EGR cooler is designed, and a three-way front air intake duct 6 is provided on the rear flange 7. The three-way front air intake duct 6 is used to connect the collecting pipe 5 and the air intake hole 702 opened on the rear flange 7, and the oxygen sensor mounting seat 9 is fixed to the upper end surface of the collecting pipe 5.

[0014] The three branch pipes are respectively the first branch pipe 2, the second branch pipe 3 and the third branch pipe 4; the first branch pipe 2, the second branch pipe 3 and the third branch pipe 4 are arranged in sequence from the side close to the exhaust port of the collecting pipe 5 to the side away from the exhaust port of the collecting pipe 5, and the lower ends of the first branch pipe 2 and the third branch pipe 4 are collected and then collected with the lower end of the second branch pipe 3.

[0015] The second branch pipe 3 corresponds to the synthesis of the second and third air passages of the engine cylinder, the first branch pipe 2 corresponds to the first air passage of the engine cylinder, and the third branch pipe 4 corresponds to the fourth air passage of the engine cylinder.

[0016] The three-element front air intake duct 6 is embedded in the rear flange 7, which reduces the occupied space and provides sufficient design space for the design of the EGR system pipeline.

[0017] The rear flange 7 is provided with stud bolts 8 .

[0018] A heat shield bracket 10 is installed on the front flange 1 .

[0019] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An exhaust manifold that is beneficial to improving the performance of the entire machine, characterized in that: The invention comprises a collecting pipe (5), a rear flange (7), a front flange (1), an oxygen sensor mounting seat (9) and three branch pipes; the upper ends of the three branch pipes are respectively connected to three air inlet holes provided on the front flange (1); the three branch pipes extend downward; the lower ends of the three branch pipes are all connected to the air inlet of the collecting pipe (5); the exhaust port of the collecting pipe (5) is connected to the exhaust hole (701) provided on the rear flange (7); a three-element front air intake conduit (6) is provided on the rear flange (7); the three-element front air intake conduit (6) is used to connect the collecting pipe (5) and the air intake hole (702) provided on the rear flange (7); and the oxygen sensor mounting seat (9) is fixed to the upper end surface of the collecting pipe (5).

2. The exhaust manifold according to claim 1 that is beneficial to improving the performance of the whole machine is characterized by: The three branch pipes are respectively a first branch pipe (2), a second branch pipe (3) and a third branch pipe (4); the first branch pipe (2), the second branch pipe (3) and the third branch pipe (4) are arranged in sequence from a side close to the exhaust port of the collecting pipe (5) to a side far from the exhaust port of the collecting pipe (5); the lower ends of the first branch pipe (2) and the third branch pipe (4) are collected and then collected with the lower end of the second branch pipe (3).

3. The exhaust manifold according to claim 2 that is beneficial to improving the performance of the whole machine is characterized in that: The second branch pipe (3) corresponds to the synthesis of the second and third air passages of the engine cylinder, the first branch pipe (2) corresponds to the first air passage of the engine cylinder, and the third branch pipe (4) corresponds to the fourth air passage of the engine cylinder.

4. The exhaust manifold according to claim 1 that is beneficial to improving the performance of the whole machine is characterized by: The three-element front air intake conduit (6) is embedded in the rear flange (7).

5. The exhaust manifold according to claim 4 that is beneficial to improving the performance of the whole machine is characterized in that: A stud bolt (8) is installed on the rear flange (7).

6. The exhaust manifold that is beneficial to improving the performance of the whole machine according to claim 1 is characterized in that: A heat shield bracket (10) is mounted on the front flange (1).

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