Intake manifold assembly

Abstract

The embodiment of the invention provides an intake manifold assembly. The intake manifold assembly comprises an intake manifold body. A PCV air channel is arranged in the air inlet manifold body, and an outlet of the PCV air channel is communicated with a pressure stabilizing cavity of the air inlet manifold body. An inlet of the PCV air channel is formed in the connecting end of the intake manifold body and a cylinder cover. An EGR air channel is arranged in the air inlet manifold body, the air inlet end of the EGR air channel is located on one side of the air inlet manifold body, and a mounting flange is arranged at the air inlet end of the EGR air channel. And the gas outlet end of the EGR gas channel is communicated with each manifold of the intake manifold body. The cost for independently manufacturing the PCV pipe and the EGR pipe can be reduced, the assembly cost is reduced, one connector is reduced, the leakage risk is reduced, meanwhile, the integrated PCV pipe is designed in the intake manifold, the space of an engine compartment is not occupied, and the size of an engine is reduced.

Description

Technical Field

[0001] This application relates to the field of intake manifold technology, and more particularly to an intake manifold assembly. Background Technology

[0002] Currently, both PCV and EGR designs use an interface provided by the intake manifold, from which a pipe connects to the intake manifold PCV interface via an external tube from the oil-gas separator. Figure 01 The same applies to EGR; the EGR valve is connected to the intake manifold via an external piping, such as... Figure 02 To accommodate assembly, this type of design requires external piping connections to be placed outside the intake manifold, thus demanding significant space. PCV and EGR pipes need to be manufactured / assembled separately, resulting in high material costs and long assembly times. Separate piping increases the number of fittings and the risk of leaks. Furthermore, EGR pipes are mostly metal, making them heavy and expensive. The connections to the EGR and manifold require sealing rings and bolts, further extending the assembly process. Summary of the Invention

[0003] This application proposes an intake manifold assembly, which relates to the field of intake manifold technology. It can reduce the cost of manufacturing PCV pipes and EGR pipes separately, reduce assembly costs, reduce one interface, and reduce the risk of leakage. At the same time, the integrated PCV pipe design is located inside the intake manifold, which does not occupy engine compartment space and reduces engine size.

[0004] This application provides an intake manifold assembly, including an intake manifold body; The intake manifold body is provided with a PCV passage, the outlet of which is connected to the pressure stabilizing chamber of the intake manifold body; the inlet of which is located at the connection end between the intake manifold body and the cylinder head. The intake manifold body is provided with an EGR passage, the intake end of the EGR passage is located on one side of the intake manifold body, and the intake end of the EGR passage is provided with a mounting flange; the outlet end of the EGR passage is connected to each manifold of the intake manifold body.

[0005] Optionally, each manifold of the intake manifold body is provided with an air inlet, which is located near the air outlet of the corresponding manifold; the air outlet of the EGR passage is connected to the corresponding manifold through the air inlet.

[0006] Optionally, the EGR air passage includes a first air passage, a second air passage, a third air passage, and a fourth air passage; the air inlet end of the first air passage is located on one side of the intake manifold body; the mounting flange is installed at the air inlet end of the first air passage. The outlet of the first air passage is connected to the second air passage, and the connecting part is located in the middle of the second air passage. The two ends of the second air passage are connected to the third air passage and the fourth air passage, respectively. The third air passage is connected to a part of the manifold of the intake manifold body. The fourth air passage is connected to the remaining manifold of the intake manifold body.

[0007] Optionally, the air inlet of the first air passage is located at a distance of 110-130 mm from the air outlet of the air intake manifold body.

[0008] Optionally, the second air passage, the third air passage, and the fourth air passage are all arranged along the width direction of the intake manifold body.

[0009] Optionally, the third and fourth air passages are located at one end near the air outlet of the intake manifold body.

[0010] Optionally, the connection between the second airway and the third airway is located in the middle of the third airway; the connection between the second airway and the fourth airway is located in the middle of the fourth airway.

[0011] Optionally, the intake manifold body is provided with an air intake port, which is connected to the pressure stabilizing chamber.

[0012] Optionally, the intake manifold body includes a first segment, a second segment, a third segment, and a fourth segment; the first segment is fixedly connected to the second segment; the connection between the first segment and the second segment forms the pressure stabilizing chamber and the PCV air passage; the second segment is fixedly connected to the third segment, and the connection between the second segment and the third segment forms multiple manifolds; all manifolds are connected to the pressure stabilizing chamber; the third segment and the first segment are respectively located on both sides of the second segment; the fourth segment is fixedly connected to the side of the third segment away from the second segment, and the connection between the fourth segment and the third segment forms the EGR air passage.

[0013] Optionally, the air intake is located on the third segment.

[0014] This application eliminates the need for separate PCV and EGR pipes by incorporating them within the intake manifold body, thus reducing space requirements, minimizing interfaces, and lowering the risk of leakage. Furthermore, the PCV and EGR pipes do not require separate manufacturing and assembly, reducing material costs and assembly time.

[0015] The integrated EGR valve assembly reduces EGR piping, resulting in a compact structure, simplified assembly, and improved EGR response time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 01 This is a schematic diagram of the existing external PCV pipe installation structure; Figure 02 This is a schematic diagram of the existing external EGR pipe installation structure; Figure 1 A three-dimensional structural schematic diagram of the intake manifold assembly provided in the embodiments of this application; Figure 2 A rear view of the intake manifold assembly provided in an embodiment of this application; Figure 3 A front view of the intake manifold assembly provided in an embodiment of this application; Figure 4 A partial cross-sectional view of the intake manifold assembly provided in an embodiment of this application; Figure 5 for Figure 3 The right view; Figure 6 for Figure 3 The left view.

[0018] Explanation of reference numerals in the attached figures: 1-Intake manifold body, 2-PCV air passage, 3-Pressure regulating chamber, 4-Inlet, 5-EGR air passage, 6-Mounting flange, 7-Manifold, 8-Intake port, 9-Main intake port; 11 - First slice, 12 - Second slice, 13 - Third slice, 14 - Fourth slice; 51 - First airway, 52 - Second airway, 53 - Third airway, 54 - Fourth airway. Detailed Implementation

[0019] To better understand the technical solutions in this specification, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0020] It should be understood that the described embodiments are merely some, not all, of the embodiments in this specification. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without inventive effort are within the scope of protection of this specification.

[0021] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this specification. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0022] The technical solutions protected by the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0023] Please see Figures 1-6 As shown, an intake manifold assembly provided in this application embodiment includes an intake manifold body 1. The intake manifold body 1 has multiple manifolds 7 and a pressure regulating chamber 3. The air inlets of the multiple manifolds 7 are all connected to the pressure regulating chamber 3, and the air outlets of the multiple manifolds 7 are all located at the connection end between the intake manifold body 1 and the cylinder head. When the intake manifold body 1 is sealed to the cylinder head, the air outlet of each manifold 7 is opposite to one cylinder of the engine, and the gas in the manifold 7 enters the combustion chamber of the corresponding cylinder through the air outlet of the manifold 7. The intake manifold body 1 is provided with an intake port 9, which is connected to the pressure regulating chamber 3. Fresh air from the outside enters the pressure regulating chamber 3 through the intake port 9, then enters each manifold 7 through the pressure regulating chamber 3, and then flows into the combustion chamber of each cylinder of the engine through the manifolds 7 respectively.

[0024] Taking a four-cylinder engine as an example, the intake manifold body 1 has four manifolds 7 corresponding to the four-cylinder engine. When the connecting end of the intake manifold body 1 is sealed and connected to the cylinder head of the four-cylinder engine, the outlet of the four manifolds 7 corresponds to the four cylinders respectively and is connected to the corresponding cylinders.

[0025] The intake manifold body 1 is equipped with a PCV (Polyvalent Gas Volume) passage 2. The outlet of the PCV passage 2 is connected to the pressure regulating chamber 3 of the intake manifold body 1. Preferably, the connection between the outlet of the PCV passage 2 and the pressure regulating chamber 3 of the intake manifold body 1 is located in the middle of the pressure regulating chamber 3. The inlet 4 of the PCV passage 2 is located at the connection end between the intake manifold body 1 and the cylinder head. Thus, PCV gas flows from the inlet 4 through the PCV passage 2 into the pressure regulating chamber 3, mixes with the gas in the pressure regulating chamber 3, and then flows through the manifold 7 into the combustion chamber of each cylinder for combustion. This integrated design eliminates the need for an external PCV pipe, integrating the PCV pipe inside the intake manifold, saving space and improving engine layout flexibility.

[0026] An EGR passage 5 is installed inside the intake manifold body 1. The intake end of the EGR passage 5 is located on one side of the intake manifold body 1, and a mounting flange 6 is provided on the intake end of the EGR passage 5. The outlet end of the EGR passage 5 is connected to each manifold 7 of the intake manifold body 1. Each manifold 7 of the intake manifold body 1 has an intake port 8, which is located near the outlet of the corresponding manifold 7. The outlet end of the EGR passage 5 is connected to the corresponding manifold 7 through the intake port 8. By setting the mounting flange 6, the EGR valve can be directly mounted on the mounting flange 6. This integrated design eliminates the need for an external EGR pipe. The integrated EGR passage is inside the intake manifold, reducing the assembly of the EGR pipe, saving labor time, and reducing the risk of EGR gas leakage. Since the external EGR pipe is removed, the EGR gas directly enters the manifold through the EGR passage 5 integrated inside the intake manifold, and the response time of the entire engine EGR condition is also optimized.

[0027] Preferred options, see Figure 4 As shown, the EGR air passage 5 includes a first air passage 51, a second air passage 52, a third air passage 53, and a fourth air passage 54. The intake end of the first air passage 51 is located on one side of the intake manifold body 1. The mounting flange 6 is installed at the intake end of the first air passage 51. The outlet end of the first air passage 51 is connected to the second air passage 52, and the connection part is located in the middle of the second air passage 52. The two ends of the second air passage 52 are connected to the third air passage 53 and the fourth air passage 54, respectively. The connection between the second air passage 52 and the third air passage 53 is located in the middle of the third air passage 53. The connection between the second air passage 52 and the fourth air passage 54 is located in the middle of the fourth air passage 54. The third air passage 53 is connected to a portion of the manifold 7 of the intake manifold body 1. The fourth air passage 54 is connected to the remaining manifold 7 of the intake manifold body 1. Taking an intake manifold body 1 with four manifolds 7 as an example, the third air passage 53 is connected to two manifolds 7, and the fourth air passage 54 is connected to the other two manifolds 7. The intake end of the first air passage 51 is located at a distance of 110-130 mm from the outlet of the intake manifold body 1. Preferably, the intake end of the first air passage 51 is located at a distance of 115 mm from the outlet of the intake manifold body 1. The second air passage 52, the third air passage 53, and the fourth air passage 54 are all arranged along the width direction of the intake manifold body 1, with the third air passage 53 and the fourth air passage 54 located at the end closest to the outlet of the intake manifold body 1. Here, the outlet of the intake manifold body 1 is the outlet of each manifold 7, and the outlet of each manifold 7 is located at the connection end between the intake manifold body 1 and the cylinder head. In actual installation, it can also be said that the intake end of the first air passage 51 is located at a distance of 110-130 mm from the connection end between the intake manifold body 1 and the cylinder head.

[0028] This configuration allows the gas exiting the EGR valve to be sent through the first intake port 51 to the second intake port 52, then through the second intake port 52 to the third intake port 53 and the fourth intake port 54, and finally through each intake port 8 into the corresponding manifold 7. After entering the manifold 7, the gas mixes with the existing gas in the manifold 7 and then enters the combustion chamber of each cylinder for combustion through the outlet of the manifold 7. The EGR gas enters the manifold for pressure stabilization and mixing, improving the uniformity of the intake manifold. In practical implementation, the size of the intake port 8 on each manifold 7 can be designed to be different sizes as needed.

[0029] As one implementation method, see Figure 5 , Figure 6 As shown, the intake manifold body 1 includes a first segment 11, a second segment 12, a third segment 13, and a fourth segment 14. The first segment 11 is fixedly connected to the second segment 12. After the first segment 11 and the second segment 12 are connected, they form a pressure-stabilizing chamber 3 and a PCV air passage 2. The second segment 12 and the third segment 13 are fixedly connected, and after the second segment 12 and the third segment 13 are connected, they form multiple manifolds 7. All manifolds 7 are connected to the pressure-stabilizing chamber 3. The third segment 13 and the first segment 11 are located on opposite sides of the second segment 12. The fourth segment 14 is fixedly connected to the side of the third segment 13 away from the second segment 12, and after the fourth segment 14 and the third segment 13 are connected, they form an EGR air passage 5. The intake port 8 is opened on the third segment 13. The main intake port 9 is opened on the second segment 12. This segmented design reduces the manufacturing difficulty of the intake manifold body 1.

[0030] This application eliminates the need for separate PCV and EGR pipes by incorporating them within the intake manifold body, thus reducing space requirements, interfaces, and leakage risks. Furthermore, the integrated PCV pipe design inside the intake manifold does not occupy engine compartment space, reducing engine size. Additionally, the PCV and EGR pipes do not require separate manufacturing and assembly, lowering material costs and assembly time.

[0031] The integrated EGR valve assembly reduces EGR piping, resulting in a compact structure, simplified assembly, and improved EGR response time.

[0032] The above are merely preferred embodiments of this specification and are not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification shall be included within the scope of protection of this specification.

Claims

1. An intake manifold assembly, characterized in that, Including the intake manifold body (1); The intake manifold body (1) is provided with a PCV passage (2), the outlet of the PCV passage (2) is connected to the pressure stabilizing chamber (3) of the intake manifold body (1); the inlet (4) of the PCV passage (2) is located at the connection end between the intake manifold body (1) and the cylinder head. The intake manifold body (1) is provided with an EGR passage (5). The intake end of the EGR passage (5) is located on one side of the intake manifold body (1). The intake end of the EGR passage (5) is provided with a mounting flange (6). The outlet end of the EGR passage (5) is connected to each manifold (7) of the intake manifold body (1).

2. The intake manifold assembly according to claim 1, characterized in that, Each manifold (7) of the intake manifold body (1) is provided with an air inlet (8), and the air inlet (8) is located near the air outlet of the corresponding manifold (7); the air outlet of the EGR air passage (5) is connected to the corresponding manifold (7) through the air inlet (8).

3. The intake manifold assembly according to claim 1, characterized in that, The EGR air passage (5) includes a first air passage (51), a second air passage (52), a third air passage (53) and a fourth air passage (54); the air inlet end of the first air passage (51) is located on one side of the intake manifold body (1); the mounting flange (6) is installed at the air inlet end of the first air passage (51); The outlet of the first air passage (51) is connected to the second air passage (52), and the connecting part is located in the middle of the second air passage (52). The two ends of the second air passage (52) are connected to the third air passage (53) and the fourth air passage (54) respectively. The third air passage (53) is connected to a part of the manifold (7) of the intake manifold body (1). The fourth air passage (54) is connected to the remaining manifold (7) of the intake manifold body (1).

4. The intake manifold assembly according to claim 3, characterized in that, The air inlet of the first air passage (51) is located at a distance of 110-130 mm from the air outlet of the air intake manifold body (1).

5. The intake manifold assembly according to claim 3, characterized in that, The second air passage (52), the third air passage (53), and the fourth air passage (54) are all arranged along the width direction of the intake manifold body (1).

6. The intake manifold assembly according to claim 3, characterized in that, The third air passage (53) and the fourth air passage (54) are located at one end near the air outlet of the intake manifold body (1).

7. The intake manifold assembly according to claim 3, characterized in that, The connection between the second airway (52) and the third airway (53) is located in the middle of the third airway (53); the connection between the second airway (52) and the fourth airway (54) is located in the middle of the fourth airway (54).

8. The intake manifold assembly according to claim 1, characterized in that, The intake manifold body (1) is provided with an intake port (9), which is connected to the pressure stabilizing cavity (3).

9. The intake manifold assembly according to claim 2, characterized in that, The intake manifold body (1) includes a first segment (11), a second segment (12), a third segment (13), and a fourth segment (14); the first segment (11) is fixedly connected to the second segment (12); the connection of the first segment (11) and the second segment (12) forms the pressure stabilizing chamber (3) and the PCV air passage (2); the second segment (12) is fixedly connected to the third segment (13), and the connection of the second segment (12) and the third segment (13) forms multiple manifolds (7); all manifolds (7) are connected to the pressure stabilizing chamber (3); the third segment (13) and the first segment (11) are located on both sides of the second segment (12); the fourth segment (14) is fixedly connected to the side of the third segment (13) away from the second segment (12), and the connection of the fourth segment (14) and the third segment (13) forms the EGR air passage (5).

10. The intake manifold assembly according to claim 9, characterized in that, The air inlet (8) is located on the third segment (13).

Images