Integrated air inlet system, engine and vehicle

Abstract

The invention relates to the technical field of engines, and provides an integrated air inlet system, an engine and a vehicle, the integrated air inlet system comprises a cylinder head cover, an air filter shell, an air filter element, a throttle valve and an air inlet manifold; an air outlet cavity is formed in the cylinder head cover, and the throttle valve and the air inlet manifold are connected with the cylinder head cover and communicate with the air outlet cavity. The air filter shell is connected to the top of the cylinder head cover, the air filter shell and the cylinder head cover define an air inlet cavity, an air inlet communicated with the air inlet cavity is formed in the side wall of the cylinder head cover, the air filter shell is provided with a connecting pipe communicated with the air inlet cavity, and the connecting pipe is connected with the throttle valve; the air filter element is arranged in the air inlet cavity and separates the air inlet from the connecting pipe. Traditional independent parts are integrated into a whole, the purpose of reducing the assembling difficulty is achieved, the whole body is highly integrated, the transverse space occupied by the air inlet system in an engine compartment is greatly reduced, and the arrangement flexibility of other parts is conveniently improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine, in particular to an integrated intake system, an engine and a vehicle. BACKGROUND

[0002] As a key component of engine, the core function of engine intake system is to provide clean, stable and sufficient air for engine combustion chamber, and its structure rationality directly affects the power performance, fuel economy and running stability of engine.

[0003] At present, the typical structure of existing engine intake system includes air filter (i.e. air cleaner), intake pipeline, pressure stabilization chamber, intake manifold and other components, which are sequentially spliced to form a complete intake pipeline through flange connection, clamp fixation and other ways. The assembly process of this spliced intake pipeline needs to complete the positioning, docking and fixation of each component in sequence, involving multiple processes such as flange connection and clamp fastening, which has high assembly complexity; moreover, the overall path of the intake pipeline is tortuous, occupying a large space in the engine compartment and limiting the flexibility of arrangement of other components. SUMMARY

[0004] The present application aims to provide an integrated intake system, an engine and a vehicle to solve the above-mentioned defects of the prior art.

[0005] The present application is implemented by the following technical solutions: An integrated intake system, comprising a cylinder head cover, an air filter housing, an air filter element, a throttle valve and an intake manifold; the cylinder head cover is internally provided with an air outlet chamber, the throttle valve and the intake manifold are both connected with the cylinder head cover and both communicate with the air outlet chamber; the air filter housing is connected to the top of the cylinder head cover and both enclose an air inlet chamber, the side wall of the cylinder head cover is provided with an air inlet communicating with the air inlet chamber, the air filter housing is provided with a connecting pipe communicating with the air inlet chamber, and the connecting pipe is connected with the throttle valve; the air filter element is arranged in the air inlet chamber and separates the air inlet from the connecting pipe.

[0006] Further, the cylinder head cover is internally provided with a lower support ring in the air inlet chamber, the air filter housing is internally provided with an upper support ring in the air inlet chamber, the upper support ring and the lower support ring clamp and fix the air filter element, and the air inlet is located below the air filter element.

[0007] Further, one end of the air filter element is provided with a skirt, which is clamped by the upper support ring and the lower support ring.

[0008] Further, the throttle valve is installed on the top of the cylinder head cover, and the intake manifold is connected to the side of the cylinder head cover.

[0009] Further, the air filter housing and the cylinder head cover are connected by screws.

[0010] Further, a sealing gasket is arranged between the air filter housing and the cylinder head cover.

[0011] Further, the air filter housing and the cylinder head cover are both made of plastic.

[0012] Further, the connecting pipe is integrally formed with the air filter housing.

[0013] The application further provides an engine comprising the integrated intake system.

[0014] The application further provides a vehicle comprising the engine.

[0015] The application has at least the following advantages and beneficial effects: in the application, the air filter housing is directly connected to the top of the cylinder head cover, and the two enclose an air intake cavity, thus eliminating the connecting components between the traditional intake pipeline, air filter and cylinder head cover; the throttle valve and the intake manifold are both directly connected to the cylinder head cover and communicate with the internal air outlet cavity, thus realizing high integration of the structure; the connecting pipe is directly integrated with the air filter housing, further reducing the assembly interface. As can be seen, the traditional independent components are integrated into one in the application, not only reducing the connecting interface (to reduce the assembly difficulty), but also realizing high integration of the whole (fully utilizing the space on the top of the traditional engine which is not effectively utilized), avoiding the traditional winding intake pipeline, greatly reducing the horizontal space occupation of the intake system in the engine compartment, facilitating the arrangement flexibility of other components. In addition, the intake path is also shortened, which helps to reduce the intake resistance and flow loss, facilitating the improvement of the intake efficiency of the engine, thus improving the power response and torque output. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a structural schematic diagram of an integrated intake system provided by the application; Figure 2 Fig. 2 is a top view of the integrated intake system provided by the application; Figure 3 Fig. 3 is a sectional view of A-A in Fig. 1; Figure 2 Figure 4 Fig. 4 is a structural schematic diagram of a cylinder head cover; Fig. 1 is a structural schematic diagram of an integrated intake system provided by the application; Fig. 2 is a top view of the integrated intake system provided by the application; Fig. 3 is a sectional view of A-A in Fig. 1; Fig. 4 is a structural schematic diagram of a cylinder head cover; Fig. 5 is a structural schematic diagram of an air filter housing; Fig. 6 is a structural schematic diagram of a connecting pipe; 1, cylinder head cover; 101, air outlet cavity; 102, lower support ring; 103, air inlet; 104, connecting port; 105, mounting port; 2, air filter housing; 201, connecting pipe; 202, upper support ring; 3, throttle valve; 4, air filter element; 5, intake manifold; 6, air intake cavity. DETAILED DESCRIPTION

[0017] Reference Figures 1-4 ​The application discloses an integrated air intake system, which comprises a cylinder head cover 1, an air filter shell 2, an air filter element 4, a throttle valve 3 and an intake manifold 5. The cylinder head cover 1 is internally provided with an air outlet cavity 101, the throttle valve 3 and the intake manifold 5 are connected with the cylinder head cover 1 and are communicated with the air outlet cavity 101, and the high integration of the structure is realized. The air filter shell 2 is connected to the top of the cylinder head cover 1 and the air filter shell 2 and the cylinder head cover 1 jointly form an air inlet cavity 6, a side wall of the cylinder head cover 1 is provided with an air inlet 103 which is communicated with the air inlet cavity 6, and the connecting components between the traditional air inlet pipeline and the air filter and the cylinder head cover are omitted. The air filter shell 2 is provided with a connecting pipe 201 which is communicated with the air inlet cavity 6, the connecting pipe 201 is connected with the throttle valve 3, that is, the connecting pipe 201 is directly integrated on the air filter shell 2, and the assembly interface is further reduced. The air filter element 4 is arranged in the air inlet cavity 6, and it is easy to understand that the air filter shell 2 will press and fix the filter element after being connected with the cylinder head cover 1; the air filter element 4 separates the air inlet 103 from the connecting pipe 201, so that the entering air is ensured to pass through the air filter element 4 and then enter the connecting pipe 201.

[0018] In actual application, the cylinder head cover 1 is connected to the top of a cylinder head (not shown in the figure), and the connection mode is not limited, for example, the connection is achieved through screws. After the air enters the connecting pipe 201, the air successively passes through the throttle valve 3, the air outlet cavity 101 and the intake manifold 5, and then enters a combustion chamber from an air inlet part on the cylinder head.

[0019] In the application, the traditional independent components are integrated into one whole, not only the connecting interface is reduced (so as to reduce the assembly difficulty), but also the whole is highly integrated (so as to make full use of the space on the top of the traditional engine which is not effectively used), the traditional winding air inlet pipeline is avoided, the horizontal space occupation of the air intake system in the engine compartment is greatly reduced, and the arrangement flexibility of other components is facilitated. In addition, the air inlet path is shortened, the air resistance and flow loss are reduced, the air intake efficiency of the engine is improved, and the power response and torque output are improved.

[0020] In the embodiment, the air filter shell 2 and the cylinder head cover 1 are made of plastic, the plastic material is helpful for reducing the whole weight, in actual application, the plastic material is formed through injection molding, and the specific material is not limited, for example, polypropylene (PP), acrylonitrile-butadiene-styrene copolymer (ABS) and the like can be used, on the basis, the connecting pipe 201 and the air filter shell 2 are integrally formed in the embodiment, that is, the connecting pipe 201 and the air filter shell 2 are formed through injection molding at one time, so as to form one whole, the interface and the sealing element between the connecting pipe 201 and the air filter shell 2 are eliminated, and the leakage problem possibly occurring at the position is fundamentally solved. In other embodiments, the air filter shell 2 and the cylinder head cover 1 can also be made of other materials, for example, aluminum alloy, composite resin and the like.

[0021] The air filter shell 2 is connected with the cylinder cover 1 by screws, specifically, a plurality of lower connecting seats are arranged on the top edge of the cylinder cover 1 in the circumferential direction, and the air filter shell 2 is correspondingly provided with one-to-one lower connecting seats arranged on the bottom edge, and the upper connecting seat and the lower connecting seat are fastened by screw connection. Similarly, the cylinder cover 1 and the cylinder cover can also be connected and fixed in the above-mentioned manner in actual application. Further, a sealing gasket (not shown in the figure) is arranged between the air filter shell 2 and the cylinder cover 1 to ensure the sealing performance of the connecting surface. Similarly, a sealing gasket (not shown in the figure) is arranged between the connecting surface of the cylinder cover 1 and the cylinder cover in actual application.

[0022] The cylinder cover 1 is provided with a lower supporting ring 102 inside the intake cavity 6, and the air filter shell 2 is provided with an upper supporting ring 202 inside the intake cavity 6. After the cylinder cover 1 and the air filter shell 2 are connected and fixed, the air filter element 4 is clamped and fixed by the upper supporting ring 202 and the lower supporting ring 102, so as to ensure the accuracy and stability of the installation position of the air filter element 4. The air inlet 103 is located below the air filter element 4. In actual application, the top side of the air inlet 103 can be completely lower than the bottom surface of the air filter element 4. Alternatively, the bottom side of the air inlet 103 can be lower than the bottom surface of the air filter element 4, and the top side of the air inlet 103 can be slightly higher than the bottom surface of the air filter element 4. It is worth noting that this structure enables the air to flow upwards from below the air filter element 4 into the connecting pipe 201. The heavier dust and impurities have a natural tendency to settle after entering the intake cavity 6, and do not directly impact the filter element. Some impurities can directly settle at the bottom of the cavity, thereby reducing the burden on the filter element and prolonging its service life.

[0023] In the embodiment, the air filter element 4 is provided with a skirt, that is, the air filter element 4 has a "T" shape structure as a whole. The skirt is clamped by the upper supporting ring 202 and the lower supporting ring 102. In actual application, the end of the air filter element 4 away from the skirt can be arranged downward, and of course, it can also be arranged upward.

[0024] In the embodiment, the throttle valve 3 is installed on the top of the cylinder cover 1 (in actual application, the top of the cylinder cover 1 is provided with a mounting port 105 communicating with the exhaust cavity 101, and the throttle valve 3 is installed at the mounting port 105 and is sealed). This facilitates disassembly and cleaning, and facilitates butt joint with the connecting pipe 201 from the air filter shell 2. The intake manifold 5 is connected to the side surface of the cylinder cover 1 (in actual application, the side surface of the cylinder cover 1 is provided with a connecting port 104 for connecting the intake manifold 5). This facilitates butt joint with the air inlet part on the side surface of the cylinder cover. Such a design helps to shorten the intake path and form an excellent air path layout.

[0025] The application also provides an engine using the above-mentioned integrated intake system.

[0026] The application also provides a vehicle using the above-mentioned engine.

[0027] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An integrated air induction system characterized by, The air filter housing is connected to the top of the cylinder cover and the air filter housing and the cylinder cover form the air inlet cavity together, the side wall of the cylinder cover is provided with an air inlet port which communicates with the air inlet cavity, the air filter housing is provided with a connecting pipe which communicates with the air inlet cavity and the connecting pipe is connected with the throttle valve, and the air filter element is arranged in the air inlet cavity and separates the air inlet port from the connecting pipe.

2. The one-piece air intake system of claim 1, wherein, The cylinder cover is provided with a lower supporting ring inside the air inlet cavity, the air filter housing is provided with an upper supporting ring inside the air inlet cavity, the upper supporting ring and the lower supporting ring clamp and fix the air filter element, and the air inlet port is located below the air filter element.

3. The one-piece air intake system of claim 2, wherein, One end of the air filter element is provided with a skirt which is clamped by the upper supporting ring and the lower supporting ring.

4. The one-piece air intake system of claim 1, wherein, The throttle valve is installed on the top of the cylinder cover, and the intake manifold is connected to the side of the cylinder cover.

5. The one-piece air intake system of claim 1, wherein, The air filter housing and the cylinder cover are connected by screws.

6. The one-piece air intake system of claim 5, wherein, A sealing gasket is arranged between the air filter housing and the cylinder cover.

7. The one-piece air intake system of claim 1, wherein, The air filter housing and the cylinder cover are made of plastic.

8. The one-piece air intake system of claim 7, wherein, The connecting pipe and the air filter housing are integrally formed.

9. An engine characterized by, The integrated air intake system of any one of claims 1-8.

10. A vehicle characterized by comprising: The engine of claim 9.

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