Intake manifold and engine

Abstract

The air inlet manifold comprises a first shell and a second shell which are connected, a pressure stabilizing cavity and a plurality of air inlet flow channels which are evenly distributed at intervals are formed between the first shell and the second shell, one end of each air inlet flow channel is communicated with the pressure stabilizing cavity, a throttle valve installation base is fixedly arranged at one end of the first shell, and a throttle valve is arranged at the other end of the first shell. A carbon tank connecting pipe is arranged on the outer side of the first shell, a flow guide part is arranged on the inner side of the first shell, the carbon tank connecting pipe is communicated with the flow guide part, the flow guide part is communicated with the pressure stabilizing cavity, and the flow guide part is provided with an opening facing the air inlet flow channel. According to the intake manifold, when an engine is started and fresh air enters the pressure stabilizing cavity from the throttle valve, the air is prevented from directly entering the carbon tank connecting pipe, and airflow in the pressure stabilizing cavity is effectively stabilized; the opening formed in the flow guide piece towards the air inlet flow channel can enable the distance between the carbon tank connecting pipe opening and the air inlet flow channel to be closer, and after the engine flames out, the carbon tank can adsorb oil gas steam in the air inlet flow channel more quickly and more specifically.

Description

Technical Field

[0001] The utility model particularly relates to an intake manifold and an engine comprising the intake manifold. Background Art

[0002] The automobile engine is one of its most important components, and the intake manifold is an essential part. When the vehicle is turned off, gasoline vapors in the fuel tank are drawn through a conduit into the carbon canister, where they are stored by activated carbon. When the engine is restarted, the solenoid valve between the carbon canister and the intake manifold opens. The vacuum within the intake manifold creates suction, drawing the gasoline vapors from the canister into the intake manifold for combustion, achieving both environmental benefits and fuel savings.

[0003] The existing technology places the carbon canister connection nozzle at the intake port of the intake manifold throttle valve. This location is far from the branch pipe, making it difficult to fully adsorb the oil and gas vapors and taking a long time to adsorb them. Furthermore, this location creates a hole in the throttle valve nozzle structure. When the engine is started, fresh air can easily enter the nozzle. However, since the connection between the manifold and the carbon canister is closed after the engine starts, the intrusive air will return along its original path, causing airflow disturbances within the pressure stabilization chamber. Utility Model Content

[0004] In view of this, in order to solve the problems of the prior art, the utility model provides an intake manifold and an engine with improved structure, which can absorb oil and gas vapor faster and more specifically, and greatly reduce the chaos of the airflow in the pressure stabilizing chamber.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An intake manifold includes a first shell and a second shell connected to each other, a pressure-stabilizing chamber and a plurality of intake flow channels evenly spaced apart are formed between the first shell and the second shell, one end of each of the intake flow channels is connected to the pressure-stabilizing chamber, a throttle mounting seat is fixedly provided at one end of the first shell, a carbon canister connecting pipe is provided on the outside of the first shell, a flow guide is provided on the inside of the first shell, the carbon canister connecting pipe is connected to the flow guide, the flow guide is connected to the pressure-stabilizing chamber, and the flow guide has an opening facing the intake flow channel.

[0007] According to some preferred implementation aspects of the present invention, the guide member includes a base and a cover fixedly connected to the base, the cover is provided with a cavity from one side close to the first shell to the other side, and the cover is provided with the opening that penetrates the wall thickness on the side close to the inlet air flow channel.

[0008] According to some preferred implementation aspects of the present invention, the depth of the cavity is less than the depth of the cover, and the cavity passes through a side of the cover close to the first shell.

[0009] According to some preferred embodiments of the present invention, the opening is connected to the cavity, and the opening includes a first part and a second part that are connected to each other, the first part is located on one side in the length direction of the cover, the second part is located on one side in the width direction of the cover and the second part is located at an end of the cover away from the throttle mounting seat.

[0010] According to some preferred implementation aspects of the present invention, a surface of the cover away from the first shell is configured as an arc-shaped surface, which can better guide air into the intake air passage.

[0011] According to some preferred implementation aspects of the present invention, the base includes a first fixing plate, a second fixing plate and a connecting rib, one side of the first fixing plate is fixedly connected to a side of the second fixing plate away from the first shell, the connecting rib is fixedly connected to the other side of the first fixing plate, and the orthographic projection of the second fixing plate on the first shell is located within the range of the orthographic projection of the first fixing plate on the first shell; a through groove is opened inside the base, and the through groove runs through the thickness direction of the first fixing plate and the second fixing plate.

[0012] According to some preferred implementation aspects of the present invention, the through groove is connected to the cavity, the outer wall of the cover close to the end of the first shell is in contact with the inner wall of the through groove, and the side of the cover close to the first shell is flush with the side of the first fixing plate close to the first shell.

[0013] According to some preferred implementation aspects of the present invention, a through hole is provided on the first shell which passes through the thickness direction thereof, and the carbon canister connecting pipe and the flow guide are respectively located on both sides of the through hole; an annular groove for accommodating the second fixing plate is provided on the side of the first shell close to the flow guide, and the through hole is located inside the annular groove.

[0014] According to some preferred implementation aspects of the present invention, the outer contour of the annular groove is the same as that of the second fixing plate, and the width of the annular groove is smaller than the distance between the outer wall of the first fixing plate and the inner wall of the cover.

[0015] The utility model also provides an engine comprising the intake manifold as described above.

[0016] Compared to the prior art, the present invention offers advantages in that, by providing a flow guide member connected to the carbon canister connecting pipe, the intake manifold of the present invention prevents fresh air from entering the pressure stabilizing chamber from the throttle valve during engine startup. This prevents the air from quickly and directly entering the carbon canister connecting pipe, thereby more effectively stabilizing the airflow within the pressure stabilizing chamber. Furthermore, the opening of the flow guide member toward the intake airflow passage brings the carbon canister connecting pipe opening closer to the intake airflow passage. This allows the carbon canister to more quickly and effectively absorb oil vapor from the intake airflow passage during operation after the engine is shut down. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the intake manifold in the preferred embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the intake manifold after the second housing is hidden in the preferred embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the intake manifold after the second housing and the guide member are hidden in a preferred embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the flow guide member in the preferred embodiment of the present invention from a first viewing angle;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the flow guide member in the preferred embodiment of the present invention from a second viewing angle;

[0023] Among them: first shell -1, through hole -11, annular groove -12, second shell -2, pressure stabilizing chamber -3, intake flow channel -4, throttle mounting seat -5, carbon canister connecting pipe -6, guide member -7, first fixing plate -71, through groove -711, second fixing plate -72, connecting rib -73, cover -74, cavity -741, first part -742, second part -743. DETAILED DESCRIPTION

[0024] In order to help those skilled in the art better understand the technical solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] The engine in this embodiment has Figures 1 to 5 The intake manifold shown in the figure includes a first shell 1 and a second shell 2 connected to each other, and a pressure-stabilizing chamber 3 and a plurality of intake flow channels 4 arranged evenly at intervals are formed between the first shell 1 and the second shell 2. One end of each intake flow channel 4 is connected to the pressure-stabilizing chamber 3; a throttle mounting seat 5 is fixedly provided at one end of the first shell 1 for installing the throttle, and the pressure-stabilizing chamber 3 is connected to the throttle.

[0026] Furthermore, the first housing 1 is provided with a through-hole 11 extending through its thickness. A carbon canister connecting pipe 6 is disposed on the outside of the first housing 1, and a flow guide 7 is disposed on the inside of the first housing 1. The carbon canister connecting pipe 6 communicates with the flow guide 7 and is located on either side of the through-hole 11. The flow guide 7 also communicates with the pressure-stabilizing chamber 3. An annular groove 12 is provided on the side of the first housing 1 near the flow guide 7. The through-hole 11 is located within the annular groove 12, and the flow guide 7 is fixedly connected to the first housing 1 via the annular groove 12.

[0027] Further, if Figure 4 and Figure 5 As shown, the guide member 7 includes a base and a cover 74 fixedly connected to the base. The cover 74 defines a cavity 741 extending from one side proximal to the first housing 1 to the other side. The depth of the cavity 741 is less than that of the cover 74, and the cavity 741 extends through the side of the cover 74 proximal to the first housing 1. Furthermore, an opening extending through the wall of the cover 74 proximal to the intake air passage 4 communicates with the cavity 741, ensuring connectivity between the canister connecting pipe 6 and the pressure-stabilizing chamber 3. The side of the cover 74 distal to the first housing 1 is configured as an arcuate surface, which better guides fresh air into the intake air passage 4 when it enters the pressure-stabilizing chamber 3 from the throttle valve.

[0028] The opening includes a first portion 742 and a second portion 743 that are interconnected. The first portion 742 is located on one side of the cover 74 in the length direction, and the second portion 743 is located on one side of the cover 74 in the width direction. The second portion 743 is located at the end of the cover 74 away from the throttle mounting seat 5. When fresh air enters the pressure stabilizing chamber 3 from the throttle valve, the end of the cover 74 away from the second portion 743 forms a barrier, preventing air from quickly and directly entering the carbon canister connecting pipe 6, thereby more effectively stabilizing the airflow within the pressure stabilizing chamber 3. Furthermore, the opening includes the first portion 742 and the second portion 743, allowing the opening to face the intake air passage 4 over a larger area. This allows the carbon canister connecting pipe 6 to be closer to the intake air passage 4 through the opening. After the engine is shut down, the carbon canister can absorb oil and gas vapor in the intake air passage 4 more quickly and more specifically.

[0029] Furthermore, the base includes a first fixing plate 71, a second fixing plate 72, and a connecting rib 73. One side of the first fixing plate 71 is fixedly connected to the side of the second fixing plate 72 away from the first housing 1, and the connecting rib 73 is fixedly connected to the other side of the first fixing plate 71. The connecting rib 73 is used to ensure the welding stability of the deflector 7. The size of the second fixing plate 72 is smaller than that of the first fixing plate 71, and the orthographic projection of the second fixing plate 72 on the first housing 1 is within the range of the orthographic projection of the first fixing plate 71 on the first housing 1.

[0030] The base has a through-slot 711 inside that communicates with the cavity 741. This through-slot 711 extends through the thickness of the first and second fixing plates 71, 72, ensuring that the outer wall of the end of the cover 74 near the first shell 1 aligns with the inner wall of the through-slot 711. Furthermore, the surface of the cover 74 near the first shell 1 is flush with the surface of the first fixing plate 71 near the first shell 1. The annular groove 12 in the first shell 1 accommodates the end of the second fixing plate 72 that is distal to the first fixing plate 71. By aligning the outer contour of the annular groove 12 with that of the second fixing plate 72, the second fixing plate 72 can better mate with the annular groove 12. Furthermore, the width of the annular groove 12 is smaller than the distance between the outer wall of the first fixing plate 71 and the inner wall of the cover 74, so that when one end of the second fixing plate 72 is located in the annular groove 12, the side of the cover 74 close to the first shell 1 and the side of the first fixing plate 71 close to the first shell 1 can respectively fit with the inner wall surface of the first shell 1 where the outer periphery and inner periphery of the annular groove 12 are located, so as to ensure a stable connection between the guide member 7 and the first shell 1. At the same time, the setting of the annular groove 12 can limit the installation position of the guide member 7 to avoid displacement of the guide member 7 due to vibration when the engine is started.

[0031] In this embodiment, when the engine is started and fresh air enters the pressure stabilizing chamber 3 through the throttle valve, the air guide 7 blocks the air from quickly and directly entering the carbon canister connecting pipe 6, thereby more effectively stabilizing the airflow within the pressure stabilizing chamber 3. After the engine is shut down, the opening of the air guide 7 facing the intake air passage 4 brings the opening of the carbon canister connecting pipe 6 closer to the intake air passage 4. During operation, the carbon canister can absorb oil and gas vapor in the intake air passage 4 more quickly and specifically, effectively shortening the absorption time and ensuring complete absorption.

[0032] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intake manifold, comprising a first housing and a second housing connected to each other, a pressure stabilizing chamber and a plurality of evenly spaced intake flow passages formed between the first housing and the second housing, one end of each intake flow passage being in communication with the pressure stabilizing chamber, a throttle mounting seat being fixedly provided at one end of the first housing, characterized in that: A carbon canister connecting pipe is provided on the outside of the first shell, and a flow guide is provided on the inside of the first shell. The carbon canister connecting pipe is connected to the flow guide, and the flow guide is connected to the pressure stabilizing chamber. The flow guide has an opening facing the intake air passage.

2. The intake manifold according to claim 1, characterized in that: The guide member includes a base and a cover fixedly connected to the base. The cover is provided with a cavity from one side close to the first shell to the other side. The cover is provided with the opening that penetrates the wall thickness on one side close to the inlet air duct.

3. The intake manifold according to claim 2, characterized in that: The depth of the cavity is smaller than the depth of the cover, and the cavity passes through a side of the cover close to the first shell.

4. The intake manifold according to claim 2, characterized in that: The opening is connected to the cavity, and the opening includes a first part and a second part that are connected to each other, the first part is located on one side of the length direction of the cover, the second part is located on one side of the width direction of the cover and the second part is located at an end of the cover away from the throttle mounting seat.

5. The intake manifold according to claim 2, characterized in that: A surface of the cover away from the first shell is configured as an arc surface.

6. The intake manifold according to claim 3, characterized in that The base includes a first fixing plate, a second fixing plate and a connecting rib, one side of the first fixing plate is fixedly connected to a side of the second fixing plate away from the first shell, the connecting rib is fixedly connected to the other side of the first fixing plate, and the orthographic projection of the second fixing plate on the first shell is located within the range of the orthographic projection of the first fixing plate on the first shell; a through groove is opened inside the base, and the through groove runs through the thickness direction of the first fixing plate and the second fixing plate.

7. The intake manifold according to claim 6, characterized in that The through slot is connected to the cavity, the outer wall of the cover near the end of the first shell is in contact with the inner wall of the through slot, and the surface of the cover near the first shell is flush with the surface of the first fixing plate near the first shell.

8. The intake manifold according to claim 6, characterized in that A through hole is provided on the first shell which passes through the thickness direction thereof, and the carbon canister connecting pipe and the flow guide are respectively located on both sides of the through hole; an annular groove for accommodating the second fixing plate is provided on the side of the first shell close to the flow guide, and the through hole is located inside the annular groove.

9. The intake manifold according to claim 8, characterized in that: The outer contour of the annular groove is the same as that of the second fixing plate, and the width of the annular groove is smaller than the distance between the outer wall of the first fixing plate and the inner wall of the cover.

10. An engine comprising the intake manifold according to any one of claims 1 to 9.

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