Arrangement structure of Venturi tube and engine

Abstract

The utility model relates to the technical field of engine structures, in particular to an arrangement structure of a Venturi tube and an engine, and the arrangement structure of the Venturi tube comprises an air filter; the supercharger is communicated with the air filter through a first pipeline; the crankcase is communicated with the supercharger through a second pipeline; and the venturi tube is communicated with the first pipeline and the second pipeline, and the venturi tube is communicated with the crankcase. According to the arrangement structure of the Venturi tube and the engine, the problem that an existing engine is lack of a Venturi structure or the Venturi structure is complex in arrangement can be solved.

Description

Technical Field

[0001] This application relates to the field of engine structure technology, and in particular to a venturi tube arrangement structure and an engine. Background Technology

[0002] As vehicle technology continues to advance, users' demands for engine performance are also increasing.

[0003] Currently, most engines do not have a venturi mechanism, making it difficult to create negative pressure in the crankcase when the turbocharger engages. Although a few engines do have a venturi mechanism, its arrangement is often quite complex due to limitations imposed by the engine's internal structure. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a Venturi tube arrangement structure and an engine to solve the problems of existing engines lacking a Venturi structure or having a complex Venturi structure arrangement.

[0005] According to a first aspect of the present invention, a venturi tube arrangement structure is provided, wherein the venturi tube arrangement structure includes: an air filter; a turbocharger connected to the air filter via a first pipeline; a crankcase connected to the turbocharger via a second pipeline; and a venturi tube connected to the first pipeline and the second pipeline, wherein the venturi tube is connected to the crankcase.

[0006] Preferably, the crankcase includes a first oil-gas separation zone, and the venturi tube is connected to the first oil-gas separation zone.

[0007] Preferably, the crankcase further includes an intake manifold, and the second pipeline is connected to the intake manifold.

[0008] Preferably, the crankcase further includes a combustion chamber, and the intake manifold is connected to the combustion chamber.

[0009] Preferably, the turbocharger is provided with an exhaust pipe, and the combustion chamber is connected to the turbocharger through a pipeline, and the exhaust gas produced by the combustion chamber is discharged through the exhaust pipe.

[0010] Preferably, the crankcase further includes a second oil-gas separation zone, which is connected to the first oil-gas separation zone. The oil and gas in the crankcase enter the venturi tube after passing through the second oil-gas separation zone and the first oil-gas separation zone in sequence.

[0011] Preferably, the airflow enters the first pipeline through the air filter, and the airflow in the first pipeline enters the second pipeline after passing through the supercharger. A first portion of the airflow in the second pipeline flows to the venturi tube, and a second portion of the airflow in the second pipeline flows to the intake manifold.

[0012] Preferably, the first portion of the gas flow mixes with the oil and gas in the venturi tube and flows into the first pipeline.

[0013] Preferably, the venturi tube is disposed on top of the cylinder head cover of the crankcase.

[0014] According to a second aspect of the present invention, an engine is provided, wherein the engine includes the Venturi tube arrangement structure as described above.

[0015] The present invention relates to a Venturi tube arrangement structure and an engine, wherein the turbocharger is connected to the air filter via a first pipe. The crankcase is connected to the turbocharger via a second pipe. The Venturi tube is connected to both the first and second pipes, and is also connected to the crankcase. This allows the high-pressure airflow in the second pipe to generate negative pressure when returning to the first pipe through the Venturi tube, thereby drawing in oil and gas from the crankcase. This arrangement results in a simple Venturi tube installation structure that occupies little space, effectively solving the problem of existing engines lacking a Venturi structure or having a complex Venturi structure arrangement.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the arrangement structure of the venturi tube according to this utility model.

[0019] Figure 2 This is a schematic diagram of a portion of the arrangement structure of the venturi tube according to this utility model.

[0020] Figure reference numerals: 1-Air filter; 2-Turbocharger; 20-Exhaust pipe; 3-Crankcase; 30-Intake manifold; 31-First oil-gas separation zone; 32-Second oil-gas separation zone; 33-Combustion box; 4-Venturi tube; 51-First pipeline; 52-Second pipeline; 61-First part of airflow; 62-Second part of airflow; 71-Low-pressure airflow; 72-High-pressure airflow; 8-Oil-gas. Detailed Implementation

[0021] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0022] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0023] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0024] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0025] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0026] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0027] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0028] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0029] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0030] like Figure 1 and Figure 2 As shown, according to a first aspect of the present invention, a Venturi tube arrangement structure is provided, which includes an air filter 1, a turbocharger 2, a crankcase 3, and a Venturi tube 4.

[0031] In the following description, reference will be made to Figure 1 and Figure 2 The specific structure of the aforementioned components and their connection relationships are described in detail in the arrangement of the venturi tube.

[0032] like Figure 1 and Figure 2 As shown, in this embodiment, the air filter 1 can be connected to the turbocharger 2 via a first pipe 51. The turbocharger 2 can be connected to the crankcase 3 via a second pipe 52. The two ends of the venturi tube 4 can be connected to the first pipe 51 and the second pipe 52 respectively, and the venturi tube 4 can also be connected to the crankcase 3. This arrangement allows the high-pressure airflow 72 in the second pipe 52 to generate negative pressure when returning to the first pipe 51 through the venturi tube 4, thereby drawing in the oil and gas 8 from the crankcase 3. The arrangement of the venturi tube occupies less space and is simple in structure and easy to install, effectively avoiding the situation where the PCV valve cannot work due to the intervention of the turbocharger 2, thus causing pressurization in the crankcase 3.

[0033] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, a first oil-gas separation zone 31 may be provided inside the crankcase 3. The first oil-gas separation zone 31 is used to separate impurities in the oil-gas 8. The venturi tube 4 can be connected to the first oil-gas separation zone 31 through a pipeline, so that the oil-gas 8 in the crankcase 3 can flow from the first oil-gas separation zone 31 to the venturi tube 4.

[0034] Furthermore, preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, a second oil-gas separation zone 32 may also be provided inside the crankcase 3. The second oil-gas separation zone 32 can also be used to separate impurities in the oil-gas 8. The second oil-gas separation zone 32 can be connected to the first oil-gas separation zone 31. This ensures that the oil-gas 8 in the crankcase 3 must pass through the second oil-gas separation zone 32 and the first oil-gas separation zone 31 sequentially before entering the venturi tube 4, thus further reducing impurities in the oil-gas 8.

[0035] Further optimized, such as Figure 1 and Figure 2 As shown, in this embodiment, the crankcase 3 may further include a cylinder head cover (not shown in the figure), which may cover the upper part of the first oil-gas separation zone 31 and the second oil-gas separation zone 32. The venturi tube 4 may be disposed on top of the cylinder head cover. This arrangement can further save the installation space of the venturi tube arrangement structure and improve the installation strength of the venturi tube 4.

[0036] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the crankcase 3 may further include an intake manifold 30 and a combustion chamber 33. The intake manifold 30 is connected to the combustion chamber 33, which is used to burn the fuel-air mixture 8. The turbocharger 2 is connected to the intake manifold 30 via a second pipe 52, allowing airflow to reach the combustion chamber 33 within the crankcase 3.

[0037] Further, preferably, in this embodiment, the supercharger 2 can be a turbocharger. The combustion chamber 33 can be connected to the supercharger 2 via a pipeline (not shown in the figure). Preferably, the supercharger 2 can also be provided with an exhaust pipe 20, so that the exhaust gas generated after the combustion of oil and gas 8 in the combustion chamber 33 can flow to the supercharger 2 through the pipeline and be discharged through the exhaust pipe 20.

[0038] Specifically, such as Figure 1 As shown, in this embodiment, low-pressure airflow 71 can enter the first pipe 51 through the air filter 1, which can be the air filter intake pipe. The low-pressure airflow 71 can flow along the first pipe 51 to the turbocharger 2, and under the action of the turbocharger 2, it is converted into high-pressure airflow 72 and enters the second pipe 52. The high-pressure airflow 72 in the second pipe 52 can be split into two parts. The first part of the airflow 61 in the second pipe 52 can flow to the venturi tube 4 and return to the first pipe 51 through the venturi tube 4. The second part of the airflow 62 in the second pipe 52 can flow to the intake manifold 30 and flow into the combustion chamber through the intake manifold 30.

[0039] like Figure 1 As shown, in this embodiment, the first portion of the airflow 61 generates negative pressure when flowing through the venturi tube 4, causing the oil-gas 8 in the crankcase 3 to flow towards the venturi tube 4 under the influence of the negative pressure. The oil-gas 8 flows into the venturi tube 4 after passing through the first oil-gas separation zone 31 and the second oil-gas separation zone 32 in sequence, and mixes with the first portion of the airflow 61 in the venturi tube 4, flowing together into the first pipeline 51. Subsequently, the oil-gas 8 flows into the intake manifold 30 after passing through the first pipeline 51 and the second pipeline 52 in sequence, and finally enters the combustion chamber 33 for combustion. The exhaust gas generated in the combustion chamber 33 flows to the turbocharger 2 through a pipeline and is discharged through the exhaust pipe 20 of the turbocharger 2.

[0040] In addition, such as Figure 1 and Figure 2 As shown, according to a second aspect of the present invention, an engine is provided, which may include the Venturi tube arrangement structure described above.

[0041] During use, the high-pressure airflow 72 in the second pipe 52 of the Venturi tube arrangement can generate negative pressure when returning to the first pipe 51 through the Venturi tube 4, thereby drawing in the oil and gas 8 from the crankcase 3. The Venturi tube arrangement occupies less space and is simple in structure and easy to install, effectively avoiding the situation where the PCV valve cannot work due to the intervention of the turbocharger 2, thus causing pressurization in the crankcase 3.

[0042] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A venturi tube arrangement structure, characterized in that, The arrangement structure of the venturi tube includes: Air filter; The booster is connected to the air filter via a first pipeline; The crankcase is connected to the turbocharger via a second pipe; and A venturi tube is connected to the first pipe and the second pipe, and the venturi tube is connected to the crankcase; The crankcase includes a first oil-gas separation zone, and the venturi tube is connected to the first oil-gas separation zone; The crankcase also includes a second oil-gas separation zone, which is connected to the first oil-gas separation zone. The oil and gas in the crankcase pass through the second oil-gas separation zone and the first oil-gas separation zone in sequence before entering the venturi tube. The venturi tube is disposed on the top of the cylinder head cover of the crankcase, and the cylinder head cover covers the upper part of the first oil-gas separation zone and the second oil-gas separation zone.

2. The arrangement structure of the venturi tube according to claim 1, characterized in that, The crankcase also includes an intake manifold, and the second pipe is connected to the intake manifold.

3. The arrangement structure of the venturi tube according to claim 2, characterized in that, The crankcase also includes a combustion chamber, and the intake manifold is connected to the combustion chamber.

4. The arrangement structure of the venturi tube according to claim 3, characterized in that, The turbocharger is equipped with an exhaust pipe, and the combustion chamber is connected to the turbocharger through a pipeline. The exhaust gas produced by the combustion chamber is discharged through the exhaust pipe.

5. The arrangement structure of the venturi tube according to claim 4, characterized in that, Airflow enters the first pipeline through the air filter, and the airflow in the first pipeline enters the second pipeline after passing through the supercharger. A first portion of the airflow in the second pipeline flows to the venturi tube, and a second portion of the airflow in the second pipeline flows to the intake manifold.

6. The arrangement structure of the venturi tube according to claim 5, characterized in that, The first portion of the gas flow mixes with the oil and gas in the venturi tube and flows into the first pipeline.

7. An engine, characterized in that, The engine includes the arrangement of venturi tubes as described in any one of claims 1 to 6.

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