Intake manifold and engine

Abstract

The utility model discloses an intake manifold and an engine, the intake manifold comprises a first shell and a second shell which are connected with each other, a throttle valve mounting seat and an intake branch pipe mounting seat arranged at the bottom of the first shell, and a pressure stabilizing cavity and a plurality of intake runners which are uniformly distributed at intervals are formed between the first shell and the second shell; the intake manifold further comprises a connecting pipeline fixedly arranged at the top of the first shell, one end of the connecting pipeline is connected with the throttle valve mounting base, and the other end of the connecting pipeline is communicated with the pressure stabilizing cavity and located in the middle of the side, close to the first shell, of the pressure stabilizing cavity. According to the air inlet manifold, the position of the total air inlet is indirectly adjusted to the middle of the pressure stabilizing cavity, so that air inlet of the air inlet manifold is uniform, it is ensured that air enters all the air inlet flow channels equivalently and equivalently, and therefore it is ensured that all air cylinders of an engine can obtain equal and consistent air supply at the same time, and the combustion conditions of all the air cylinders are the same.

Description

TECHNICAL FIELD

[0001] The utility model relates to an air intake manifold and an engine comprising the air intake manifold. BACKGROUND

[0002] The air intake manifold is located between the throttle valve and the engine intake valve, is a key component in the engine air intake system, and mainly plays a role of distributing air, fuel mixture or clean air to each cylinder. The length and diameter size of the branch pipe of the air intake manifold need to be adjusted according to the size and the number of cylinders of the engine, in order to ensure that each cylinder can obtain equal-time and equal-quantity air supply, the total airflow should be equal-time and equal-quantity when entering the branch pipe of the air intake manifold, the total air inlet position design is particularly important for the air intake manifold, and the total air inlet is connected with the throttle valve (clean air filtered outside can enter the air intake manifold through the throttle valve control). Meanwhile, the overall layout and boundary of the engine should also be considered when designing the air intake manifold, so as to ensure that no interference occurs with other components (such as ignition coil, spark plug, etc.).

[0003] Therefore, the total air inlet position of the existing air intake manifold is relatively fixed, and cannot be placed at will only considering the performance requirements, and cannot be directly placed at a position capable of making the airflow enter each branch pipe equally in time and quantity, which cannot guarantee that the airflow is equal-time and equal-quantity when the total airflow enters the stable pressure chamber and reaches each branch pipe, so that the air entering each cylinder is not equal-time and equal-quantity, and individual cylinder combustion is insufficient, resulting in increased engine carbon deposition and increased fuel consumption, and in severe cases, the internal components of the engine can be severely worn and even damaged. CONTENT OF THE UTILITY MODEL

[0004] Therefore, in order to solve the problems of the prior art, the utility model provides an air intake manifold and an engine with improved structure, so that the air intake of the air intake manifold is uniform, and the air entering each air flow passage is equal-time and equal-quantity.

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

[0006] The utility model provides an air intake manifold, which comprises a first shell and a second shell connected, a throttle valve mounting seat and an air inlet branch pipe mounting seat arranged at the bottom of the first shell, a stable pressure chamber and a plurality of uniformly spaced air inlet flow passages are formed between the first shell and the second shell, one end of the air inlet flow passage is communicated with the stable pressure chamber, the other end of the air inlet flow passage is communicated with the air inlet branch pipe mounting seat, the air intake manifold further comprises a connecting pipeline fixedly arranged at the top of the first shell, one end of the connecting pipeline is connected with the throttle valve mounting seat, the other end of the connecting pipeline is communicated with the stable pressure chamber and located at the middle of the side of the stable pressure chamber close to the first shell.

[0007] According to some preferred embodiments of the utility model, the connecting pipeline comprises a first pipe body and a second pipe body fixedly connected, the first pipe body and the second pipe body are overlapped to form a passage for gas circulation, and one end of the first pipe body is fixedly connected with the throttle valve mounting seat.

[0008] According to some preferred embodiments of the utility model, one side of the first pipe body away from the second pipe body is fixedly connected with the outer wall of the first shell, the first pipe body comprises a first shell part, the first shell part is arranged in an arc shape, the inner wall of the first shell part is recessed to form a first arc-shaped groove on the side away from the second pipe body, and one end of the first shell part is provided with an arc-shaped hole penetrating through the thickness direction thereof.

[0009] According to some preferred embodiments of the utility model, the first pipe body further comprises a second shell part and a third shell part, one end of the second shell part is fixedly connected with the end of the first shell part away from the arc-shaped hole, the other end of the second shell part is fixedly connected with one end of the third shell part, and the other end of the third shell part is fixedly connected with the throttle valve mounting seat.

[0010] According to some preferred embodiments of the utility model, the second shell part is arranged in an arc shape, the inner wall of the second shell part is recessed to form a second arc-shaped groove on the side away from the second pipe body, and one end of the second shell part away from the first shell part is arranged in a downward bending mode.

[0011] According to some preferred embodiments of the utility model, the third shell part is in a cylindrical shape, the third shell part has a cavity inside, and the third shell part is provided with a notch from the end close to the second shell part to the other end, the depth of the notch is less than the height of the third shell part.

[0012] According to some preferred embodiments of the utility model, the first pipe body further comprises a fourth shell part and two oppositely arranged first vertical plates and second vertical plates, the fourth shell part is located at the end of the first shell part away from the second shell part, the first vertical plate and the second vertical plate are fixedly connected with the two ends of the fourth shell part respectively, one end of the first vertical plate away from the fourth shell part is fixedly connected with one end of the side of the first shell part away from the throttle valve mounting seat, one end of the second vertical plate away from the fourth shell part is fixedly connected with one end of the side of the first shell part close to the throttle valve mounting seat, and the top surfaces of the first vertical plate and the second vertical plate are all arranged in arc shapes.

[0013] The fourth shell part is arranged in an arc shape, the inner wall of the fourth shell part is recessed to form a third arc-shaped groove on the side away from the first shell part, the third arc-shaped groove and the arc-shaped hole jointly enclose an inlet for gas to enter the pressure stabilizing cavity, the inlet is in communication with the first arc-shaped groove, and the inlet is located at the middle of the side of the pressure stabilizing cavity close to the first shell.

[0014] According to some preferred embodiments of the utility model, the second pipe body comprises a fifth shell part, a sixth shell part bent downward from one end of the fifth shell part and a seventh shell part bent downward from the other end of the fifth shell part, the fifth shell part is arranged above the first shell part, the sixth shell part is arranged above the second shell part and the third shell part, and the seventh shell part is arranged above the fourth shell part.

[0015] According to some preferred embodiments of the utility model, the fifth shell part is arranged in an arc shape, the inner wall of the fifth shell part is recessed to form a fourth arc-shaped groove towards the side away from the first pipe body, the sixth shell part is arranged in an arc shape, the inner wall of the sixth shell part is recessed to form a fifth arc-shaped groove towards the side away from the first pipe body, the seventh shell part is arranged in an arc shape, the inner wall of the seventh shell part is recessed to form a sixth arc-shaped groove towards the side away from the first pipe body, and the first arc-shaped groove, the second arc-shaped groove, the cavity of the third shell part, the third arc-shaped groove, the fourth arc-shaped groove, the fifth arc-shaped groove and the sixth arc-shaped groove jointly form the channel.

[0016] The utility model also provides an engine comprising the intake manifold as described above.

[0017] Compared with the prior art, the intake manifold of the utility model has the advantages that: the intake manifold is connected with the throttle valve mounting seat at one end of the connecting pipeline to communicate with the total air inlet, and the other end of the connecting pipeline is communicated with the pressure stabilizing cavity, so that the total air inlet position is indirectly adjusted to the middle of the pressure stabilizing cavity, the intake manifold air intake is uniform, the air from the total air inlet enters each air inlet flow channel in time and equal amount through the connecting pipeline, so that each cylinder of the engine can obtain equal and consistent air supply at the same time, the combustion conditions of each cylinder are the same, which is beneficial to realize more balanced combustion process, improve combustion efficiency, and further improve the power output of the engine, and also reduces the emission of harmful pollutants. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0019] Figure 1 It is a perspective structural schematic view of the intake manifold of the preferred embodiment of the utility model in the first visual angle.

[0020] Figure 2 It is a perspective structural schematic view of the intake manifold of the preferred embodiment of the utility model in the second visual angle.

[0021] Figure 3 It is the three-dimensional structure schematic view of the second shell hiding the intake manifold in the preferred embodiment of the utility model;

[0022] Figure 4 It is the three-dimensional structure schematic view of the second shell hiding the intake manifold in the preferred embodiment of the utility model;

[0023] Figure 5 It is the three-dimensional structure schematic view of the second shell hiding the intake manifold in the preferred embodiment of the utility model;

[0024] Wherein: first shell-1, second shell-2, throttle mounting seat-3, intake branch mounting seat-4, pressure stabilizing cavity-5, intake flow channel-6, first pipe body-71, first shell part-711, first arc-shaped groove-C1, arc-shaped hole-K, second shell part-712, second arc-shaped groove-C2, third shell part-713, notch-Q, fourth shell part-714, third arc-shaped groove-C3, first vertical plate-715, second vertical plate-716, inlet-717, second pipe body-72, fifth shell part-721, fourth arc-shaped groove-C4, sixth shell part-722, fifth arc-shaped groove-C5, seventh shell part-723, sixth arc-shaped groove-C6. DETAILED DESCRIPTION

[0025] In order to make the personnel in the technical field better understand the technical scheme of the utility model, the technical scheme in the embodiment of the utility model will be described clearly and completely in the following with the drawings in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the protection scope of the utility model.

[0026] The engine in the embodiment has the intake manifold as shown in Figures 1 to 5 The intake manifold includes the first shell 1, the second shell 2, the throttle mounting seat 3, the intake branch mounting seat 4 arranged at the bottom of the first shell 1 and the connecting pipeline fixedly arranged at the top of the first shell 1, the first shell 1 and the second shell 2 form the pressure stabilizing cavity 5 and the plurality of evenly spaced intake flow channels 6, one end of each intake flow channel 6 is communicated with the pressure stabilizing cavity 5, and the other end of the intake flow channel 6 is communicated with the intake branch mounting seat 4; the throttle mounting seat 3 is used for installing the throttle, one end of the connecting pipeline is connected with the throttle mounting seat 3, and the other end of the connecting pipeline is communicated with the pressure stabilizing cavity 5.

[0027] Further, the connecting pipe comprises a fixedly connected and coverable first pipe body 71 and a second pipe body 72, and the first pipe body 71 is fixedly connected to the outer wall of the first shell 1 away from the second pipe body 72. Specifically, as shown in Figure 4 the first pipe body 71 comprises a first shell part 711, a second shell part 712, a third shell part 713, a fourth shell part 714, and two oppositely arranged first vertical plates 715 and second vertical plates 716. The first shell part 711 is provided with an arc-shaped hole K penetrating through the thickness direction thereof, the second shell part 712 is fixedly connected to the first shell part 711 away from the arc-shaped hole K, the other end of the second shell part 712 is fixedly connected to the one end of the third shell part 713, the other end of the third shell part 713 is fixedly connected to the throttle valve mounting seat 3, and the fourth shell part 714 is located at the end of the first shell part 711 away from the second shell part 712. The first vertical plate 715 and the second vertical plate 716 are respectively fixedly connected to the two ends of the fourth shell part 714, the end of the first vertical plate 715 away from the fourth shell part 714 is fixedly connected to the end of the first shell part 711 away from the side (upper side) of the intake branch pipe mounting seat 4, the end of the second vertical plate 716 away from the fourth shell part 714 is fixedly connected to the end of the first shell part 711 close to the side (lower side) of the intake branch pipe mounting seat 4, and the top surfaces of the first vertical plate 715 and the second vertical plate 716 are both provided as arc surfaces, which are convenient for covering the second pipe body 72.

[0028] The first shell part 711 is arc-shaped, and the inner wall of the first shell part 711 is recessed to form a first arc-shaped groove C1 away from the second pipe body 72; the third shell part 713 is cylindrical, and has a cavity inside, and the third shell part 713 is provided with a notch Q from the end close to the second shell part 712 to the other end, the depth of the notch Q is less than the height of the third shell part 713, and the other end of the third shell part 713 not provided with the notch Q is convenient for connecting the throttle valve mounting seat 3. The second shell part 712 is arc-shaped, and the inner wall of the second shell part 712 is recessed to form a second arc-shaped groove C2 away from the second pipe body 72, and the end of the second shell part 712 away from the first shell part 711 is bent downward, which is convenient for the fixed connection between the second shell part 712 and the third shell part 713. The fourth shell part 714 is also arc-shaped, and the inner wall of the fourth shell part 714 is recessed to form a third arc-shaped groove C3 away from the first shell part 711, and the third arc-shaped groove C3 and the arc-shaped hole K jointly enclose an inlet 717 for gas to enter the pressure stabilization chamber 5, the inlet 717 is in communication with the first arc-shaped groove C1, and the inlet 717 is located at the middle of the side of the pressure stabilization chamber 5 close to the first shell 1, so that the intake manifold intake is uniform, and it is ensured that air from the total intake port enters each intake flow passage 6 through the inlet 717 of the connecting pipe at the same time and in the same amount.

[0029] Further, as shown in Figure 2 and Figure 5As shown, the second pipe body 72 comprises a fifth shell part 721, a sixth shell part 722 bent downward from one end of the fifth shell part 721, and a seventh shell part 723 bent downward from the other end of the fifth shell part 721. The fifth shell part 721 is arranged above the first shell part 711, the sixth shell part 722 is arranged above the second shell part 712 and the third shell part 713, and the seventh shell part 723 is arranged above the fourth shell part 714.

[0030] In addition, the fifth shell part 721 is arranged in an arc shape, and the inner wall of the fifth shell part 721 is recessed toward the side away from the first pipe body 71 to form a fourth arc-shaped groove C4; the sixth shell part 722 is arranged in an arc shape, and the inner wall of the sixth shell part 722 is recessed toward the side away from the first pipe body 71 to form a fifth arc-shaped groove C5; and the seventh shell part 723 is arranged in an arc shape, and the inner wall of the seventh shell part 723 is recessed toward the side away from the first pipe body 71 to form a sixth arc-shaped groove C6.

[0031] In the embodiment, the first arc-shaped groove C1, the second arc-shaped groove C2, the cavity of the third shell part 713, and the third arc-shaped groove C3 in the first pipe body 71, together with the fourth arc-shaped groove C4, the fifth arc-shaped groove C5, and the sixth arc-shaped groove C6 in the second pipe body 72, form a channel for gas circulation, which indirectly adjusts the total intake port position to the middle of the pressure stabilization cavity 5, so that the intake manifold intake is uniform, and ensures that air from the total intake port enters each intake flow passage 6 through the connecting pipeline in a timely and equal manner, thereby ensuring that each cylinder of the engine can simultaneously obtain equal and consistent air supply, making the combustion condition of each cylinder the same, which is conducive to realizing a more balanced combustion process.

[0032] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable persons skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An air intake manifold comprising a first casing and a second casing connected together, a throttle valve mounting seat, and an intake branch mounting seat provided at the bottom of the first casing, a pressure stabilizing chamber and a plurality of evenly spaced intake flow channels being formed between the first casing and the second casing, one end of the intake flow channels being in communication with the pressure stabilizing chamber, and the other end of the intake flow channels being in communication with the intake branch mounting seat, characterized in that, The intake manifold further comprises a connecting pipe fixedly arranged on the top of the first shell, one end of the connecting pipe is connected with the throttle valve mounting seat to communicate with the total intake port, and the other end of the connecting pipe communicates with the pressure stabilizing cavity and is located at the middle of the side of the pressure stabilizing cavity close to the first shell; The connecting pipe comprises a first pipe body and a second pipe body fixedly connected, the first pipe body and the second pipe body are overlapped to form a channel for gas flow, one end of the first pipe body is fixedly connected with the throttle valve mounting seat, and the side of the first pipe body away from the second pipe body is fixedly connected with the outer wall of the first shell; The first pipe body comprises a first shell part, a second shell part, a third shell part and a fourth shell part, one end of the second shell part is fixedly connected with the first shell part away from one end of the arc-shaped hole, the other end of the second shell part is fixedly connected with one end of the third shell part, the other end of the third shell part is fixedly connected with the throttle valve mounting seat, and the fourth shell part is located at the end of the first shell part away from the second shell part; one end of the first shell part is provided with an arc-shaped hole penetrating through the thickness direction thereof, the inner wall of the fourth shell part is recessed to form a third arc-shaped groove away from the first shell part, and the third arc-shaped groove and the arc-shaped hole jointly enclose an inlet for gas entering the pressure stabilizing cavity, and the inlet is located at the middle of the side of the pressure stabilizing cavity close to the first shell.

2. The intake manifold of claim 1, wherein, The first shell part is arranged in an arc shape, and the inner wall of the first shell part is recessed to form a first arc-shaped groove away from the second pipe body.

3. The intake manifold of claim 2, wherein, The second shell part is arranged in an arc shape, the inner wall of the second shell part is recessed to form a second arc-shaped groove away from the second pipe body, and the end of the second shell part away from the first shell part is arranged in a downward bending manner.

4. The intake manifold of claim 3, wherein, The third shell part is in a cylindrical shape, the third shell part has a cavity inside, and the third shell part is provided with a notch from the end close to the second shell part to the other end, and the depth of the notch is smaller than the height of the third shell part.

5. The air intake manifold of claim 2, wherein, The first pipe body further comprises two oppositely arranged first vertical plates and second vertical plates, the first vertical plate and the second vertical plate are fixedly connected with the two ends of the fourth shell part respectively, one end of the first vertical plate away from the fourth shell part is fixedly connected with one end of the side of the first shell part away from the intake branch pipe mounting seat, one end of the second vertical plate away from the fourth shell part is fixedly connected with one end of the side of the first shell part close to the intake branch pipe mounting seat, and the top surfaces of the first vertical plate and the second vertical plate are both arranged in an arc shape; the fourth shell part is arranged in an arc shape, and the inlet communicates with the first arc-shaped groove.

6. The intake manifold of claim 5, wherein, The second pipe body comprises a fifth shell part, a sixth shell part bent downward from one end of the fifth shell part, and a seventh shell part bent downward from the other end of the fifth shell part, the fifth shell part is arranged above the first shell part, the sixth shell part is arranged above the second shell part and the third shell part, and the seventh shell part is arranged above the fourth shell part.

7. The air intake manifold of claim 6, wherein, The fifth shell part is arranged in an arc shape, and an inner wall of the fifth shell part is recessed to a side away from the first pipe body to form a fourth arc-shaped groove; the sixth shell part is arranged in an arc shape, and an inner wall of the sixth shell part is recessed to a side away from the first pipe body to form a fifth arc-shaped groove; the seventh shell part is arranged in an arc shape, and an inner wall of the seventh shell part is recessed to a side away from the first pipe body to form a sixth arc-shaped groove; the first arc-shaped groove, the second arc-shaped groove, the cavity of the third shell part, the third arc-shaped groove, the fourth arc-shaped groove, the fifth arc-shaped groove and the sixth arc-shaped groove jointly form the channel.

8. An engine comprising the intake manifold according to any one of claims 1-7.

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