Intake manifold assembly

Abstract

The application discloses an air intake manifold assembly, which comprises an air intake manifold body, a PCV valve and an air intake manifold connecting pipe, the air intake manifold connecting pipe is provided with a main air inlet pipeline and a distribution pipeline which are communicated, the PCV valve is connected to an air inlet of the main air inlet pipeline, a plurality of air outlets are arranged on the distribution pipeline, the number of the air outlets is consistent with the number of air outlet channels of the air intake manifold body, and the air outlets and the air outlet channels are in one-to-one correspondence and are communicated.

Description

Technical Field

[0001] This invention relates to the field of engine intake systems, and more specifically to an intake manifold assembly. Background Technology

[0002] In traditional engines, the PCV valve is connected to the intake manifold main pipe, close to the throttle body. This structural layout has the following technical problems:

[0003] a. It is prone to condensation, which can cause the throttle body to freeze.

[0004] b. The formation of condensate also causes uneven flow of condensate as it enters the air through the throttle valve, which can easily lead to misfire in a single cylinder;

[0005] c. Uneven entry of fuel and air into each cylinder leads to uneven combustion in each cylinder of the engine.

[0006] d. Oil and gas can easily deposit and coke at the throttle position, causing throttle jamming.

[0007] Therefore, an intake manifold assembly is needed that can solve the above problems, improve engine performance and service life, reduce maintenance frequency, and improve engine quality. Summary of the Invention

[0008] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide an intake manifold assembly that can improve engine performance and service life, reduce maintenance frequency, and improve engine quality.

[0009] The intake manifold assembly of the present invention includes an intake manifold body, a PCV valve, and a simulated intake manifold connecting pipe. The simulated intake manifold connecting pipe has a main intake pipe and a distribution pipe that are connected. The PCV valve is connected to the intake port of the main intake pipe. The distribution pipe has a plurality of outlets. The number of outlets is the same as the number of outlet channels of the intake manifold body. The outlets and outlet channels are connected in a one-to-one correspondence. The assembly also includes a throttle valve, which is installed on the main intake manifold of the intake manifold body. By adding a simulated intake manifold connector to the intake manifold body, the PCV valve is no longer installed in the main intake passage of the intake manifold body. The simulated intake manifold delivers the air-fuel mixture to the intake manifold outlet passage through a distribution pipe. During the delivery process, the path for condensate to collect at the throttle body is increased. Under the high temperature environment of the intake manifold, condensate no longer collects at a large flow rate at the throttle body, thus solving the problem of condensate accumulation and freezing at the throttle body. At the same time, due to the dispersed delivery path, the condensate is distributed approximately evenly, preventing misfires in a single cylinder caused by excessive condensate. Furthermore, the air-fuel mixture enters each cylinder evenly, resulting in uniform combustion in each cylinder and improved engine performance. Moreover, the PCV valve and throttle body are far apart, preventing fuel and gas deposits and coking at the throttle body location, thus preventing throttle body jamming. This improves engine performance and service life, reduces maintenance frequency, and enhances engine quality.

[0010] Furthermore, the intake and exhaust directions of the intake manifold body are at an angle γ, where γ < 90°. Further, 55° < γ < 70°, and in this design, γ is 65°. This γ angle setting makes the exhaust from the intake manifold body more uniform and allows for a lower exhaust rate, improving the uniformity of intake for each cylinder; it also prevents condensate from accumulating at the throttle valve.

[0011] Furthermore, the outlet direction of the distribution pipe and the outlet direction of the intake manifold body are at an angle β, where β < 90°. Further, 80° < β < 90°, and in this design, γ is 90°. The setting of the β angle ensures that the outlet of the distribution pipe does not merge with the outlet of the intake manifold body, and the perpendicular arrangement of the outlet directions in this design improves the uniformity of intake airflow to each cylinder.

[0012] Furthermore, the air outlet on the distribution pipe is connected to the beginning of the corresponding intake manifold outlet channel. The beginning of the intake manifold outlet channel is the position where the air intake from the throttle valve first contacts the intake manifold outlet channel, further reducing the escape of the air-fuel mixture towards the throttle valve, improving engine performance and service life, and enhancing engine quality.

[0013] Furthermore, the main intake pipe and the distribution pipe are perpendicular, and the main intake pipe is connected to the middle of the distribution pipe. As shown in the figure, the main structure of the simulated intake manifold connecting pipe is roughly "T" shaped, and the simulated intake manifold connecting pipe is installed at the top of the intake manifold body, while the throttle valve is installed at the bottom of the intake manifold body. The top and bottom refer to... Figure 2 The top and bottom of the intake manifold are positioned opposite each other and far apart, allowing them to converge within the intake manifold's flow stabilization chamber, thus optimizing the intake manifold's ventilation and improving engine performance and quality.

[0014] Furthermore, the bottom wall of the intake manifold body near the outlet of the distribution pipe slopes downwards from front to back, which guides the air outlet of the distribution pipe to mix with the air intake of the throttle valve, improving the uniformity of air intake. The main intake pipe slopes upwards and backwards; this causes the air intake through the intake manifold connecting pipe to flow in an approximately reverse "C" shape when the throttle valve is closed, improving mixing efficiency; the aforementioned front and rear reference... Figure 4 The left and right sides are respectively front and back, which will not be elaborated further here.

[0015] Furthermore, the intake manifold body has intake holes with the same number as the intake manifold outlet channels, and these intake holes are connected to the beginning of the intake manifold outlet channels in a one-to-one correspondence. The distribution pipe has outlet connectors with the same number as the distribution pipe outlets, and these outlets are located at the ends of the outlet connectors in a one-to-one correspondence. The outlet connectors extend into the intake holes in a one-to-one correspondence, and the outlet connectors and the periphery of the intake holes are sealed in a one-to-one correspondence. As shown in the figure, the intake holes are stepped holes, and the ends of the outlet connectors are sealed to the intake holes by O-rings. This enclosed structure ensures strict sealing and improves product quality.

[0016] The beneficial effects of this invention are as follows: The intake manifold assembly disclosed in this invention, by adding a simulated intake manifold connecting pipe to the intake manifold body, eliminates the need for the PCV valve to be mounted on the main intake passage of the intake manifold body. The simulated intake manifold delivers the air-fuel mixture to the intake manifold outlet passage through a distribution pipe. During the delivery process, the path for condensate to converge towards the throttle body is extended. Under the high-temperature environment of the intake manifold, condensate no longer converges towards the throttle body in a large flow rate, thus solving the problem of condensate condensation and freezing at the throttle body. At the same time, due to the dispersed delivery path, the condensate is dispersed approximately uniformly, preventing misfires in a single cylinder caused by excessive condensate. Furthermore, the air-fuel mixture enters each cylinder evenly, resulting in uniform combustion in each cylinder and improved engine performance. Moreover, the PCV valve and throttle body are far apart, preventing the problem of fuel and gas deposits and coking at the throttle body location, thus preventing throttle body jamming. This improves engine performance and service life, reduces maintenance frequency, and enhances engine quality. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 3 This is a top view of the structure of the present invention;

[0021] Figure 4 This is a side view of the structure of the present invention;

[0022] Figure 5 For the present invention Figure 1 A schematic diagram of the AA-direction structure;

[0023] Figure 6 For the present invention Figure 1 A schematic diagram of the BB-oriented structure. Detailed Implementation

[0024] Figure 1 As shown in the schematic diagram of the present invention, the intake manifold assembly in this embodiment includes an intake manifold body 1, a PCV valve 2, and a simulated intake manifold connecting pipe 3. The simulated intake manifold connecting pipe 3 has a main intake pipe 31 and a distribution pipe 32 that are connected. The PCV valve 2 is connected to the intake port of the main intake pipe 31. The distribution pipe 32 has a plurality of outlets. The number of outlets is the same as the number of outlet channels of the intake manifold body. The outlets and outlet channels are connected in a one-to-one correspondence. It also includes a throttle valve 4, which is installed on the main intake pipe of the intake manifold body 1. By adding a simulated intake manifold connecting pipe 3 to the intake manifold body 1, the PCV valve is no longer installed in the main intake passage of the intake manifold body 1. The simulated intake manifold sends the air-fuel mixture to the intake manifold outlet passage through the distribution pipe 32. During the delivery process, the path for condensate to collect towards the throttle valve 4 is increased. Under the high temperature environment of the intake manifold, condensate no longer collects at a large flow rate towards the throttle valve 4, thus solving the problem of condensate accumulation and freezing at the throttle valve 4. At the same time, due to the dispersed delivery path, the condensate is dispersed approximately evenly, preventing misfires in a single cylinder caused by excessive condensate. Furthermore, the air-fuel mixture enters each cylinder evenly, resulting in even combustion in each cylinder and improved engine performance. Moreover, the PCV valve 2 and the throttle valve 4 are far apart, preventing the problem of fuel and gas deposits and coking at the throttle valve 4 and throttle valve 4 jamming. This can improve engine performance and service life, reduce maintenance frequency, and improve engine quality.

[0025] In this embodiment, the intake direction and the exhaust direction of the intake manifold body 1 are at an angle γ, where γ < 90°. Further, 55° < γ < 70°, and in this solution, γ is 65°. The setting of the γ angle makes the exhaust of the intake manifold body 1 more uniform, and the rate can be reduced, improving the intake uniformity of each cylinder; at the same time, it can also prevent condensate from accumulating in the throttle valve 4.

[0026] In this embodiment, the air outlet direction of the distribution pipe 32 and the air outlet direction of the intake manifold body 1 are at an angle β, where β < 90°. Further, 80° < β < 90°, and in this design, γ is 90°. The setting of the β angle ensures that the air outlet of the distribution pipe 32 does not merge with the air outlet of the intake manifold body 1. Furthermore, the perpendicular setting of the air outlet directions in this design improves the uniformity of air intake for each cylinder.

[0027] In this embodiment, the air outlet on the distribution pipe 32 is connected to the beginning of the corresponding intake manifold outlet channel. The beginning of the intake manifold outlet channel is the position where the air intake from the throttle valve 4 first contacts the intake manifold outlet channel, further reducing the escape of the air-fuel mixture towards the throttle valve 4, improving engine performance and service life, and enhancing engine quality.

[0028] In this embodiment, the main intake pipe 31 and the distribution pipe 32 are perpendicular, and the main intake pipe 31 is connected to the middle of the distribution pipe 32. As shown in the figure, the main structure of the simulated intake manifold connecting pipe 3 is roughly "T" shaped, and the simulated intake manifold connecting pipe 3 is installed at the top of the intake manifold body 1, while the throttle valve 4 is installed at the bottom of the intake manifold body 1. The top and bottom refer to... Figure 2 The top and bottom of the intake manifold are positioned opposite each other and far apart, allowing them to converge within the intake manifold's flow stabilization chamber, thus optimizing the intake manifold's ventilation and improving engine performance and quality.

[0029] In this embodiment, the bottom wall of the intake manifold body 1 near the outlet of the distribution pipe 32 slopes downwards from front to back, which can guide the air outlet of the distribution pipe 32 to mix with the air intake of the throttle valve 4, improving the uniformity of air intake. The main intake pipe 31 slopes backwards from bottom to top, so that when the throttle valve 4 is closed, the air intake direction through the simulated intake manifold connecting pipe 3 is approximately a reverse "C" shape, improving the mixing efficiency; the front and rear reference... Figure 4 The left and right sides are respectively front and back, which will not be elaborated further here.

[0030] In this embodiment, the intake manifold body 1 has an intake port number consistent with the number of intake manifold outlet channels, and the intake ports are connected to the beginning of the intake manifold outlet channels in a one-to-one correspondence. The distribution pipe 32 has an outlet connector number consistent with the number of outlets of the distribution pipe 32, and the outlets of the distribution pipe 32 are opened at the end of the outlet connectors in a one-to-one correspondence. The outlet connectors extend into the intake ports in a one-to-one correspondence, and the outlet connectors and the periphery of the intake ports are sealed in a one-to-one correspondence. As shown in the figure, the intake port is a stepped hole, and the end of the outlet connector is sealed to the intake port by an O-ring. This surrounding structure can ensure strict sealing and improve product quality.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An intake manifold assembly, characterized in that: It includes an intake manifold body, a PCV valve, a throttle valve, and a simulated intake manifold connecting pipe. The simulated intake manifold connecting pipe has a main intake pipe and a distribution pipe that are connected. The PCV valve is connected to the intake port of the main intake pipe. The distribution pipe has a number of air outlets. The number of air outlets is the same as the number of air outlet channels of the intake manifold body. The air outlets and air outlet channels are connected in a one-to-one correspondence. The throttle valve is installed on the main intake duct of the intake manifold body; the outlet on the distribution pipe is connected to the beginning of the corresponding intake manifold outlet channel; the simulated intake manifold connecting pipe is installed on the top of the intake manifold body; the throttle valve is installed on the bottom of the intake manifold body; the main intake duct slopes backward from bottom to top; the bottom wall of the intake manifold body near the outlet of the distribution pipe slopes downward from front to back to guide the air outlet of the distribution pipe to mix with the air intake of the throttle valve. The first end of the intake manifold outlet passage is the position where the intake air from the throttle valve first contacts the intake manifold outlet passage.

2. The intake manifold assembly according to claim 1, characterized in that: The intake and exhaust directions of the intake manifold body are at an angle γ, where γ < 90°.

3. The intake manifold assembly according to claim 1, characterized in that: The outlet direction of the distribution pipe is at an angle β to the outlet direction of the intake manifold body, where β < 90°.

4. The intake manifold assembly according to claim 1, characterized in that: The main intake pipe and the distribution pipe are perpendicular, and the main intake pipe is connected to the middle of the distribution pipe.

5. The intake manifold assembly according to claim 1, characterized in that: The intake manifold body has an intake port with the same number as the intake manifold outlet channels, and the intake ports are connected to the beginning of the intake manifold outlet channels in a one-to-one correspondence; the distribution pipe has an outlet connector with the same number as the distribution pipe outlets, and the distribution pipe outlets are opened at the end of the outlet connectors in a one-to-one correspondence; the outlet connectors extend into the intake ports in a one-to-one correspondence, and the outlet connectors and intake ports are sealed around their periphery in a one-to-one correspondence.

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