Air inlet pipe structure capable of reducing tempering influence

Abstract

The utility model discloses an air inlet pipe structure capable of reducing tempering influence, belongs to the technical field of air inlet pipes, and solves the problems that when an engine has a tempering phenomenon, the air inlet pipe is easy to damage, so that the use experience of the engine is seriously reduced, and the service life of the engine is seriously prolonged. The air inlet pipe structure capable of reducing the tempering influence comprises an air inlet pipe body, a flange plate is arranged at the bottom of the air inlet pipe body, the air inlet pipe body is connected with an air cylinder cover through the flange plate, any section of the top of the air inlet pipe body is semicircular, and the semicircle of the top of the air inlet pipe body is tangent to the two sides of the air inlet pipe body. An air inlet is formed in the top of the air inlet pipe body. According to the air inlet pipe structure capable of reducing the tempering influence, damage to the air inlet pipe caused by tempering is reduced, the service life of the air inlet pipe is prolonged, and therefore the service life of an engine is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of intake pipe technology, and more specifically, to an intake pipe structure that can reduce the impact of backfire. Background Technology

[0002] The engine intake manifold is usually installed on the cylinder head. It introduces fresh air from the mixer into the intake manifold on the cylinder head and is the conduit that provides oxygen for engine combustion.

[0003] Currently, there are several arrangements for intake manifolds: 1. A square intake manifold with an internal cavity, which is directly fitted onto the cylinder head; 2. A round intake manifold, which allows air to enter each intake port of the cylinder head individually through its upper outlet; 3. The intake manifold is integrated into the cylinder head. Among these, the square structure of the first option is widely used due to its simple structure and economical material usage. However, for gas engines, backfire and other abnormal combustion problems remain one of the main challenges. When backfire occurs in the engine, the gas pressure inside the intake manifold increases, making the intake manifold susceptible to damage, thus severely reducing the engine's performance and lifespan. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing an intake pipe structure that can reduce the impact of backfire, reduce the damage caused by backfire to the intake pipe, extend the service life of the intake pipe, and thus extend the service life of the engine.

[0005] The technical solution of this utility model is as follows: an intake pipe structure that can reduce the impact of backfire includes an intake pipe body, a flange at the bottom of the intake pipe body, the intake pipe body and the cylinder head are connected by the flange, any cross section of the top of the intake pipe body is semi-circular, the semi-circular top of the intake pipe body is tangent to both sides of the intake pipe body, and an intake port is provided at the top of the intake pipe body.

[0006] As a further improvement, a sealing ring is provided between the flange of the intake manifold body and the cylinder head.

[0007] Furthermore, a mounting groove is provided on one side of the outer wall of the intake pipe body, and there are multiple mounting grooves, which extend to the upper end face of the flange.

[0008] Furthermore, a clearance groove is provided on the other side of the outer wall of the intake pipe body, and there are multiple clearance grooves.

[0009] Furthermore, one side of the inner wall of the intake pipe body is provided with a plurality of first arc-shaped surfaces, each of which corresponds to a plurality of mounting grooves. The other side of the inner wall of the intake pipe body is provided with a plurality of second arc-shaped surfaces, each of which corresponds to a plurality of clearance grooves. Both the first and second arc-shaped surfaces are smooth arc-shaped surfaces.

[0010] Furthermore, the central axis of the first arc-shaped surface is staggered with the central axis of the second arc-shaped surface.

[0011] Beneficial effects

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] This invention provides an intake pipe structure that reduces the impact of backfire. Any cross-section at the top of the intake pipe body is semi-circular, which provides better pressure resistance and better rigidity against the high pressure of the environment during backfire. This reduces the damage caused by backfire to the intake pipe, extends the service life of the intake pipe, and thus extends the service life of the engine. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present invention in use;

[0015] Figure 2 This is a top view cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the left-side cross-sectional structure of this utility model;

[0017] Figure 4 This is a schematic diagram showing the stress analysis of the existing intake pipe and the intake pipe of this utility model during tempering.

[0018] Wherein: 1-Intake pipe body, 2-Intake port, 3-Mounting groove, 4-Leaving groove, 5-First arc surface, 6-Second arc surface, 7-Cylinder head. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0020] See Figure 1-4An intake pipe structure that can reduce the impact of backfire includes an intake pipe body 1, a flange at the bottom of the intake pipe body 1, and an intake pipe body 1 connected to a cylinder head 7 via the flange. Any cross-section of the top of the intake pipe body 1 is semi-circular, and the semi-circular top of the intake pipe body 1 is tangent to both sides of the intake pipe body 1. An intake port 2 is located at the top of the intake pipe body 1. The semi-circular top cross-section of the intake pipe body 1 can balance some of the gas pressure, providing better rigidity and pressure resistance against high-pressure gas generated by backfire. It also avoids small rounded corner transitions, reducing the impact of stress concentration and effectively improving the service life of the intake pipe body 1.

[0021] In this embodiment, a sealing ring is provided between the flange of the intake pipe body 1 and the cylinder head 7 to further enhance the sealing between the intake pipe body 1 and the cylinder head 7.

[0022] In this embodiment, a mounting groove 3 is provided on one side of the outer wall of the intake pipe body 1. There are multiple mounting grooves 3, and the mounting grooves 3 extend to the upper end face of the flange. The intake pipe body 1 is connected to the cylinder head 7 through a flange. The mounting holes on the flange of the intake pipe body 1 are opened in the mounting groove 3, which can reduce the area required by the flange and avoid the intake pipe body 1 occupying too much area on the cylinder head 7 and interfering with other components.

[0023] In this embodiment, a clearance groove 4 is provided on the other side of the outer wall of the intake pipe body 1. There are multiple clearance grooves 4. When the intake pipe body 1 is installed on the cylinder head 7, the multiple clearance grooves 4 provided on the side of the intake pipe body 1 can prevent the intake pipe body 1 from interfering with other components during installation.

[0024] In this embodiment, a plurality of first arc-shaped surfaces 5 are provided on one side of the inner wall of the intake pipe body 1, and the plurality of first arc-shaped surfaces 5 correspond one-to-one with a plurality of mounting grooves 3. A plurality of second arc-shaped surfaces 6 are provided on the other side of the inner wall of the intake pipe body 1, and the plurality of second arc-shaped surfaces 6 correspond one-to-one with a plurality of clearance grooves 4. The first arc-shaped surfaces 5 and the second arc-shaped surfaces 6 are both smooth arc-shaped surfaces. The first arc-shaped surfaces 5 and the second arc-shaped surfaces 6 are arc-shaped surfaces that smoothly transition to the inner wall of the intake pipe body 1, which can effectively ensure smooth gas flow in the intake pipe body 1. Preferably, if the area of ​​the flange on the intake pipe body 1 is increased, the installation grooves 3 can be avoided, thereby avoiding the setting of the first arc-shaped surfaces 5 on the inner wall of the intake pipe body 1, effectively increasing the space inside the intake pipe body 1.

[0025] In this embodiment, the central axis of the first arc-shaped surface 5 is misaligned with the central axis of the second arc-shaped surface 6 to avoid making the local space volume inside the intake pipe body 1 too small. When the engine backfires, it avoids the local space pressure inside the intake pipe body 1 being too high, which would put too much pressure on the intake pipe body 1 and affect its service life.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. An intake manifold structure that reduces the effects of backfire, characterized in that, Includes an intake pipe body (1), the bottom of which is provided with a flange, the intake pipe body (1) is connected to the cylinder head (7) through the flange, any cross section of the top of the intake pipe body (1) is semi-circular, the semi-circular top of the intake pipe body (1) is tangent to both sides of the intake pipe body (1), and the top of the intake pipe body (1) is provided with an air inlet (2).

2. The intake pipe structure according to claim 1, characterized in that, A sealing ring is provided between the flange of the intake pipe body (1) and the cylinder head (7).

3. The intake manifold structure according to claim 1, characterized in that, The intake pipe body (1) has a mounting groove (3) on one side of its outer wall. There are multiple mounting grooves (3), and the mounting grooves (3) extend to the upper end face of the flange.

4. An intake pipe structure that reduces the impact of backfire according to claim 3, characterized in that, The intake pipe body (1) has a relief groove (4) on the other side of its outer wall, and there are multiple relief grooves (4).

5. An intake pipe structure according to claim 4 that can reduce the effect of backfire, characterized in that, The inner wall of the intake pipe body (1) has a plurality of first arc-shaped surfaces (5) on one side, and the plurality of first arc-shaped surfaces (5) correspond one-to-one with a plurality of mounting grooves (3). The inner wall of the intake pipe body (1) has a plurality of second arc-shaped surfaces (6) on the other side, and the plurality of second arc-shaped surfaces (6) correspond one-to-one with a plurality of clearance grooves (4). The first arc-shaped surfaces (5) and the second arc-shaped surfaces (6) are both smooth arc-shaped surfaces.

6. An intake pipe structure according to claim 5 that can reduce the effect of backfire, characterized in that, The central axis of the first arc-shaped surface (5) is misaligned with the central axis of the second arc-shaped surface (6).

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