CN220869508U - Exhaust manifold, engine and vehicle - Google Patents

Abstract

The utility model discloses an exhaust manifold, an engine and a vehicle, wherein the exhaust manifold is applied to a cylinder, the cylinder is provided with an exhaust passage, and the exhaust manifold comprises: summarizing pipelines; the branch pipelines are arranged at intervals, the branch pipelines are arranged independently, one end of each branch pipeline is connected with exhaust channels of a plurality of cylinders, and the other end of each branch pipeline is connected with the summarizing pipeline; among the plurality of cylinders connected with the same branch pipe, the ignition sequence interval value of any two cylinders is L, and L is more than or equal to 2. The utility model provides an exhaust manifold, an engine and a vehicle, which solve the technical problem that exhaust among cylinders in the existing engine can generate mutual interference.

Description

Exhaust manifold, engine and vehicle

Technical Field

The utility model relates to the technical field of engine exhaust, in particular to an exhaust manifold, an engine and a vehicle.

Background

After the power stroke of the engine is completed, the gas in the cylinder needs to be exhausted as soon as possible, so that fresh gas can enter the next working cycle. An exhaust manifold is an important component in the exhaust process of an engine, and is connected with a cylinder block of the engine to concentrate and guide the exhaust of each cylinder into an exhaust manifold. However, the exhaust manifold is limited by the structure of the existing exhaust manifold, and exhaust among all cylinders can be mutually interfered, so that the exhaust of an engine is unsmooth, further problems of poor combustion, preignition and the like occur, and the performance of the engine is adversely affected.

Disclosure of utility model

The utility model mainly aims to provide an exhaust manifold, an engine and a vehicle, and aims to solve the technical problem that exhaust among cylinders in the existing engine can interfere with each other.

To achieve the above object, an embodiment of the present utility model provides an exhaust manifold applied to a cylinder having an exhaust passage, the exhaust manifold including:

Summarizing pipelines; and

The branch pipelines are at least provided with a plurality of branch pipelines, the plurality of branch pipelines are arranged independently of one another, one end of each branch pipeline is connected with exhaust channels of a plurality of cylinders, and the other end of each branch pipeline is connected with the summarizing pipeline respectively; among the plurality of cylinders connected with the same branch pipe, the ignition sequence interval value of any two cylinders is L, and L is more than or equal to 2.

Alternatively, in an embodiment of the present utility model, two branch pipes are provided, each of which connects the exhaust passages of three of the cylinders.

Optionally, in an embodiment of the present utility model, three branch pipes are provided, each branch pipe is connected to two exhaust channels of the air cylinder, two adjacent branch pipes are different from the collecting pipe in connection position, an air outlet of the branch pipe and an air outlet hole of the collecting pipe are disposed on two opposite sides of the collecting pipe, and an air outlet direction of an air outlet of the branch pipe and an air outlet direction of an air outlet hole of the collecting pipe are disposed in parallel.

Optionally, in an embodiment of the present utility model, the summary pipeline is detachably connected to the branch pipeline.

Optionally, in an embodiment of the present utility model, the summary line and the branch line are connected by a flange.

Optionally, in an embodiment of the present utility model, the branch pipe is detachably connected to the cylinder.

To achieve the above object, an embodiment of the present utility model proposes an engine including the exhaust manifold described above.

Optionally, in an embodiment of the present utility model, the engine is a six-cylinder engine, and an ignition sequence of the six-cylinder engine is sequentially one cylinder, five cylinders, three cylinders, six cylinders, two cylinders and four cylinders;

the three branch pipelines are provided with three, a first one of the three branch pipelines is connected with the first cylinder and the second cylinder, a second one of the three branch pipelines is connected with the third cylinder and the fourth cylinder, and a third one of the three branch pipelines is connected with the fifth cylinder and the sixth cylinder; or, two branch pipelines are arranged, one of the two branch pipelines is connected with the first cylinder, the second cylinder and the third cylinder, and the other of the two branch pipelines is connected with the fourth cylinder, the fifth cylinder and the sixth cylinder.

To achieve the above object, an embodiment of the present utility model proposes a vehicle including the engine described above.

Compared with the prior art, in the technical scheme provided by the utility model, the exhaust channels of the corresponding cylinders are connected by arranging a plurality of branch pipelines, namely, each branch pipeline is connected with the exhaust channels of the plurality of cylinders, and the exhaust channels of each cylinder are connected to the main pipeline in a gathering way through the corresponding branch pipeline, so that the exhaust gas of the engine is discharged. Moreover, the exhaust passage of a plurality of cylinders is connected to the one end of every lateral pipe way, among a plurality of cylinders that same lateral pipe way is connected, the ignition sequence interval value of arbitrary two cylinders is L is no less than 2 for there is not the adjacent cylinder of ignition sequence in the same lateral pipe way, namely the exhaust passage of the adjacent cylinder of ignition sequence separates through different lateral pipe ways, thereby has reduced the exhaust interference between the adjacent cylinder of ignition sequence, make the exhaust unobstructed more, prevent the waste gas from flowing backward, and then reduced pumping loss, the combustion quality of fuel has been improved, the risk of pre-combustion has been reduced, the power economy of engine, reliability has been promoted.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of an exhaust manifold of the present utility model.

Reference numerals illustrate:

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present utility model without making any inventive effort, are intended to be within the scope of the embodiments of the present utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like in the embodiments of the present utility model are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is at least two, for example, two, three, etc., unless explicitly defined otherwise.

In embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be either fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the embodiments of the present utility model.

The exhaust manifold is an important component for discharging exhaust gas generated when the engine is operated and burned from the cylinder, and has an important influence on the exhaust performance, power performance, noise level, and the like of the engine.

The existing heavy six-cylinder engine has the common ignition sequence of 1-5-3-6-2-4, and the exhaust channel of each cylinder is directly connected with an exhaust manifold, so that the structure is simple and compact, the manufacturability is good, the carrying arrangement of the whole engine is facilitated, but exhaust interference and unsmooth exhaust exist among the cylinders, the pumping loss of the engine is easy to increase, the noise is poor, excessive residual waste gas also can influence the fuel combustion of the engine, the power economy of the engine is poor, high-temperature waste gas is likely to return or remain in the cylinders, the engine is seriously at risk of pre-ignition, and the performance of the engine is further influenced.

In view of the above, the embodiment of the utility model provides an exhaust manifold, an engine and a vehicle, which are provided with a collecting pipeline and a plurality of branch pipelines connected in parallel on the collecting pipeline, wherein each branch pipeline is at least connected with exhaust channels of two cylinders, and the ignition sequence interval value of any two cylinders is L or more than 2 in the plurality of cylinders connected with the same branch pipeline, so that the cylinders adjacent in ignition sequence are not existed in the same branch pipeline, namely, the exhaust channels of the cylinders adjacent in ignition sequence are separated through different branch pipelines, thereby reducing exhaust interference among the cylinders adjacent in ignition sequence.

In order to better understand the above technical solutions, the following describes the above technical solutions in detail with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present utility model proposes an exhaust manifold applied to a cylinder having an exhaust passage 9, the exhaust manifold including:

a summary pipeline 1; and

The branch pipelines 2 are provided with a plurality of branch pipelines 2, the plurality of branch pipelines 2 are arranged independently of one another, one end of each branch pipeline 2 is connected with exhaust channels 9 of a plurality of cylinders, and the other end of each branch pipeline 2 is respectively connected with the gathering pipeline 1; among the plurality of cylinders connected by the same branch pipeline 2, the ignition sequence interval value of any two cylinders is L, and L is more than or equal to 2.

In the technical solution adopted in this embodiment, the exhaust passages 9 of the corresponding cylinders are connected by providing a plurality of branch pipes 2, that is, each of the branch pipes 2 is connected to the exhaust passages 9 of the plurality of cylinders, and the exhaust passages 9 of each of the cylinders are collectively connected to the collecting pipe 1 through the corresponding branch pipe 2, thereby discharging the exhaust gas of the engine. Moreover, the exhaust passage 9 of a plurality of cylinders is connected to one end of each branch pipeline 2, among a plurality of cylinders connected by the same branch pipeline 2, the ignition sequence interval value of any two cylinders is L more than or equal to 2, so that the cylinders adjacent in ignition sequence do not exist in the same branch pipeline 2, namely, the exhaust passages 9 of the cylinders adjacent in ignition sequence are separated by different branch pipelines 2, thereby reducing the exhaust interference between the cylinders adjacent in ignition sequence, ensuring that the exhaust is smoother, preventing the exhaust from flowing back, further reducing pumping loss, improving the combustion quality of fuel, reducing the risk of pre-combustion, and improving the power economy and reliability of the engine.

Specifically, the exhaust manifold in the present embodiment may be applied to a six-cylinder engine, or may be applied to a four-cylinder 6 or other even-cylinder engine. In the present embodiment, the description is given taking an example of application to a six-cylinder engine, and for other cylinder number engines, reference may be made to a six-cylinder engine, and details will not be given.

Specifically, two branch pipelines 2 are arranged, one end of each branch pipeline 2 is connected with an exhaust channel 9 of three cylinders, and the other end of each branch pipeline 2 is respectively connected with a gathering pipeline 1; or, branch pipeline 2 is equipped with three, and the exhaust passage 9 of two cylinders is connected to the one end of every branch pipeline 2, and the other end of every branch pipeline 2 is connected with the pipeline of gathering 1 respectively, and adjacent two branch pipelines 2 are different with the hookup location of gathering pipeline 1, and the gas outlet of branch pipeline 2 and the venthole of gathering pipeline 1 are located the relative both sides of gathering pipeline 1, and the direction of giving vent to anger of the gas outlet of branch pipeline 2 and the direction parallel arrangement of giving vent to anger of the venthole of gathering pipeline 1. It will be appreciated that if the number of engine cylinders is a, the number of branch lines 2 is B, the number of cylinders to which each branch line 2 is connected is C, C is equal to or greater than 2, then a=b×c. As an alternative, one end of the branch pipe 2 forms an air inlet, the other end of the branch pipe 2 forms an air outlet, the air inlet of the branch pipe 2 is connected with the exhaust passage 9 of the cylinder, and the air outlet of the branch pipe 2 is connected with the collecting pipe 1, so that the exhaust gas in the cylinder is collected into the collecting pipe 1 through the exhaust passage 9 and the branch pipe 2. The intake ports of the branch pipes 2 are connected to the exhaust passages 9 of a plurality of cylinders, that is, the exhaust passages 9 of two cylinders may be connected to the intake port of the same branch pipe 2, or the exhaust passages 9 of three cylinders may be connected to the intake port of the same branch pipe 2, and so on, and will not be described in detail.

In an embodiment, the summary pipeline 1 and the branch pipeline 2 are independent components and can be assembled together to form the whole exhaust manifold, so that the production flow of the components can be simplified, mass production is facilitated, and the production efficiency is improved. Specifically, the summary pipeline 1 and the branch pipeline 2 may be fixed by welding assembly.

Illustratively, in one embodiment of the utility model, the summary line 1 is detachably connected to the branch line 2. Specifically, through the detachable connection of the summary pipeline 1 and the branch pipeline 2, the convenience of the disassembly and assembly of the branch pipeline 2 and the summary pipeline 1 can be improved, the later maintenance or replacement is convenient, and the use cost can be reduced. As an alternative, the summary line 1 may be secured thereto by a screw or clip connection, without limitation.

Illustratively, in one embodiment of the utility model, the summary line 1 and the branch line 2 are flanged. So set up, can strengthen the joint strength of gathering pipeline 1 and lateral pipe 2, improve sealing performance, prevent gas leakage, and then improve the exhaust effect.

Illustratively, in one embodiment of the utility model, the branch line 2 is detachably connected to the cylinder. Specifically, through the detachable connection of cylinder and lateral pipeline 2, can improve the convenience of lateral pipeline 2 and cylinder dismouting, make things convenient for maintenance or the change in later stage, can reduce use cost. As an alternative, the branch pipe 2 is connected with the cylinder through a flange, so that the connection strength of the cylinder and the branch pipe 2 can be enhanced, the sealing performance is improved, the air leakage is prevented, and the exhaust effect is further improved.

To achieve the above object, an embodiment of the present utility model proposes an engine including the exhaust manifold described above. Specifically, the specific structure of the exhaust manifold refers to the above embodiment, and since the engine adopts all the technical solutions of the above embodiment, at least the engine has all the beneficial effects brought by the technical solutions of the above embodiment, and will not be described in detail herein.

Illustratively, referring to FIG. 1, in one embodiment of the present utility model, the engine is a six-cylinder engine, the firing order of which is one cylinder 3, five cylinders 7, three cylinders 5, six cylinders 8, two cylinders 4, and four cylinders 6 in that order;

Wherein three branch pipelines 2 are arranged, a first one of the three branch pipelines 2 is connected with a first cylinder 3 and a second cylinder 4, a second one of the three branch pipelines 2 is connected with a third cylinder 5 and a fourth cylinder 6, and a third one of the three branch pipelines 2 is connected with a fifth cylinder 7 and a sixth cylinder 8; or, two branch pipes 2 are provided, one of the two branch pipes 2 is connected with a cylinder 3, a two-cylinder 4 and a three-cylinder 5, and the other of the two branch pipes 2 is connected with a four-cylinder 6, a five-cylinder 7 and a six-cylinder 8.

Specifically, the engine is a six-cylinder engine, and comprises a cylinder 3, a cylinder two 4, a cylinder three 5, a cylinder four 6, a cylinder five 7 and a cylinder six 8 which are sequentially arranged, wherein the ignition sequence of the engine is the cylinder 3, the cylinder five 7, the cylinder three 5, the cylinder six 8, the cylinder two 4 and the cylinder four 6. In one embodiment, the branch pipeline 2 is provided with three exhaust channels 9, namely, the exhaust channels 9 of the first cylinder 3 and the second cylinder 4 are connected to the same branch pipeline 2, the exhaust channels 9 of the third cylinder 5 and the fourth cylinder 6 are connected to the same branch pipeline 2, and the exhaust channels 9 of the fifth cylinder 7 and the sixth cylinder 8 are connected to the same branch pipeline 2. It will be appreciated that when cylinder one 3 begins to exhaust, cylinder two 4 is in the intake downstream; when the three cylinders 5 start to exhaust, the four cylinders 6 start to compress; when the five cylinders 7 start to exhaust, the six cylinders 8 are in compression up. So set up, the exhaust channel 9 of the cylinder of adjacent ignition order separates, and the length of extension branch pipeline 2 is suitable again, can prevent the produced interference of exhaust between each jar for the exhaust is unobstructed more, and waste gas residual is few, promotes power economy, reduces the pre-ignition hidden danger. In other embodiments, two branch pipes 2 may be provided, that is, the first cylinder 3, the second cylinder 4 and the third cylinder 5 are connected to the same branch pipe 2, and the fourth cylinder 6, the fifth cylinder 7 and the sixth cylinder 8 are connected to the same branch pipe 2, so that the exhaust passages 9 of cylinders in adjacent firing order may be separated, which will not be described in detail.

To achieve the above object, an embodiment of the present utility model proposes a vehicle including the engine described above. Specifically, the specific structure of the engine refers to the above embodiment, and since the vehicle adopts all the technical solutions of the above embodiment, at least the vehicle has all the beneficial effects brought by the technical solutions of the above embodiment, which are not described in detail herein.

The foregoing description is only the preferred embodiments of the present utility model, and is not intended to limit the scope of the embodiments of the present utility model, and all the equivalent structural changes made by the descriptions of the embodiments of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the embodiments of the present utility model.

Claims (4)

1. An exhaust manifold applied to a cylinder having an exhaust passage, characterized by comprising:

Summarizing pipelines; and

The branch pipelines are arranged at intervals, the branch pipelines are arranged independently, one end of each branch pipeline is connected with exhaust channels of a plurality of cylinders, and the other end of each branch pipeline is connected with the summarizing pipeline; among the plurality of cylinders connected with the same branch pipe, the ignition sequence interval value of any two cylinders is L, and L is more than or equal to 2; the collecting pipeline is detachably connected with the branch pipeline, the collecting pipeline is connected with the branch pipeline through a flange, and the branch pipeline is connected with the cylinder through a flange;

The branch pipeline is provided with three, each branch pipeline is connected with two exhaust channels of the air cylinder, two adjacent branch pipelines are different from the connecting position of the summarizing pipeline, the air outlet of the branch pipeline and the air outlet hole of the summarizing pipeline are arranged on two opposite sides of the summarizing pipeline, and the air outlet direction of the air outlet of the branch pipeline and the air outlet direction of the air outlet hole of the summarizing pipeline are arranged in parallel.

2. An engine comprising the exhaust manifold of claim 1.

3. The engine of claim 2, wherein the engine is a six-cylinder engine, and the firing order of the six-cylinder engine is one cylinder, five cylinders, three cylinders, six cylinders, two cylinders, and four cylinders in sequence;

the three branch pipelines are provided with three, a first one of the three branch pipelines is connected with the first cylinder and the second cylinder, a second one of the three branch pipelines is connected with the third cylinder and the fourth cylinder, and a third one of the three branch pipelines is connected with the fifth cylinder and the sixth cylinder; or, two branch pipelines are arranged, one of the two branch pipelines is connected with the first cylinder, the second cylinder and the third cylinder, and the other of the two branch pipelines is connected with the fourth cylinder, the fifth cylinder and the sixth cylinder.

4. A vehicle comprising an engine according to any one of claims 2-3.