An engine intake pipe

Abstract

The utility model provides an engine air intake pipe, belonging to the technical field of engines. It includes an air intake pipe, a base plate and a gasket. An air intake port and an air outlet port are provided on the air intake pipe. The base plate is connected to the air outlet port on the air intake pipe. A plurality of air outlet ports are provided on the base plate. The gasket is arranged between the base plate and the air intake pipe. The base plate is fixedly connected to the air intake pipe through a plurality of first connecting bolts. A hollow air intake pipe is used to connect the air intake port with the plurality of air outlet ports. The entire interior of the air intake pipe is used as the inner cavity part of the air intake pipe, so that it has sufficient inner cavity volume, ensuring that the performance and emission of the engine reach the design and development goals. At the same time, the air intake pipe and the base plate are detachably designed, which has the effect of facilitating the cleaning of the air intake pipe at a later stage.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine intake pipe. Background Art

[0002] The intake pipe is a pipe that guides the air needed for combustion into the engine. In terms of design, it is generally necessary to design intake pipe structures of different shapes, lengths, and cross-sectional areas according to different engine requirements to meet the needs of different engines; and for multi-cylinder high-power engines, to ensure the uniformity of multi-cylinder intake, the design also needs to focus on the intake inertia generated under high airflow and the backflow and vortex phenomena that are particularly prone to occur due to large ventilation volume, so as to reduce flow losses and pressure fluctuations, so as to meet the design requirements of high speed, high power, economy, and emission performance.

[0003] The existing conventional intake pipe can no longer meet the intake system requirements of the D36 diesel engine. Limited by the intake side structure of the cylinder head, the intake pipe solution must meet the requirements of both convenient assembly and sufficient intake pipe inner cavity volume to ensure that the performance and emissions of this engine meet the design and development goals. Utility Model Content

[0004] In view of the above problems, the utility model provides an engine intake pipe.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0006] An engine air intake pipe is provided, comprising an air intake pipe, a base plate and a gasket. The air intake pipe is provided with an air inlet and an air outlet. The base plate is connected to the air outlet port on the air intake pipe. A plurality of air outlets are provided on the base plate. The gasket is arranged between the base plate and the air intake pipe. The base plate is fixedly connected to the air intake pipe by a plurality of first connecting bolts.

[0007] Furthermore, the gasket is an asbestos paper gasket.

[0008] Furthermore, a lap ear is integrally provided on one side edge of the bottom plate, a connecting hole is provided on the lap ear, and the lap ear is used for connecting to a common rail pipe in a fuel supply system.

[0009] Furthermore, a first mounting opening is provided on the outer wall of the intake pipe at the air inlet, and the first mounting opening of the intake pipe is used for mounting an intake air temperature sensor.

[0010] Furthermore, a second installation opening is provided on the outer wall of the air inlet pipe at the air outlet port, and the second installation opening of the air inlet pipe is used for installing the air heating device.

[0011] Furthermore, mounting holes are correspondingly opened on both side edges of the intake pipe, bottom plate and gasket, and second connecting bolts are passed through the mounting holes of the intake pipe, bottom plate and gasket. The intake pipe, bottom plate and gasket are fixed to the intake side of the engine cylinder head by the second connecting bolts.

[0012] Furthermore, a plurality of guide parts are integrally provided on the bottom plate, and the guide parts are arranged at intervals along the circumference of the bottom plate, and the guide parts are used to contact the gasket and the outer wall of the intake pipe.

[0013] The beneficial effects of the utility model are as follows: a hollow intake pipe is used to connect the air inlet with multiple air outlets, and the entire interior of the intake pipe is used as the inner cavity part of the intake pipe, so that it has a sufficient inner cavity volume, ensuring that the performance and emissions of the engine reach the design and development goals. At the same time, the intake pipe and the base plate are designed to be detachable, which is convenient for cleaning the internal structure of the intake pipe at a later time and prolonging the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the engine intake pipe after assembly according to an embodiment of the present application.

[0015] Figure 2 This is a schematic exploded view of an engine intake pipe according to an embodiment of the present application.

[0016] Figure 3 This is a schematic structural diagram of the intake pipe from another perspective of an embodiment of the present application.

[0017] Among them, 1. air inlet pipe; 11. air inlet; 12. air outlet port; 13. first mounting port; 14. second mounting port; 2. bottom plate; 21. air outlet; 22. lap ear; 23. guide part; 3. gasket; 4. mounting hole. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] The present application embodiment discloses an engine intake pipe, referring to Figure 1 , Figure 2 and Figure 3, including an intake pipe 1, a bottom plate 2 and a gasket 3. The intake pipe 1 is provided with an intake port 11 and an outlet port 12, wherein the outlet port 12 is in a long strip shape, the intake pipe 1 is integrally formed and hollowed out inside, the gasket 3 and the bottom plate 2 are sequentially arranged at the outlet port 12 of the intake pipe 1, and a plurality of outlets 21 are opened along the length direction of the intake pipe 1 and the top of the intake pipe 1, each outlet 21 is respectively connected to each piston cylinder intake manifold of the engine. Four through holes are spaced apart at the edges of both sides of the intake pipe 1, the gasket 3 and the bottom plate 2, and a first connecting bolt is inserted in the through hole. The first bolt passes through the intake pipe 1, the gasket 3 and the bottom plate 2 and is threadedly connected with a nut, thereby connecting and fixing the intake pipe 1, the bottom plate 2 and the gasket 3.

[0020] The air inlet 11 is connected to the multiple air outlets 21 in a chamber through the air inlet pipe 1, so that the air inlet pipe 1 has a sufficient air inlet cavity volume to meet the performance requirements of the D36 diesel engine. The air inlet pipe 1 and the bottom plate 2 are formed in one step, and the gasket 3 is made of asbestos paper, which is convenient for assembly, subsequent disassembly and cleaning.

[0021] In the embodiment of the present application, a lap ear 22 is integrally formed on one side edge of the bottom plate 2. Specifically, there are two lap ears 22. A connecting hole is opened through the lap ear 22. The lap ear 22 is used to connect to the common rail pipe in the fuel supply system.

[0022] A first mounting opening 13 is provided on the outer wall of the intake pipe 1 at the air inlet 11, and the first mounting opening 13 of the intake pipe 1 is used to install an intake air temperature sensor. A second mounting opening 14 is provided on the outer wall of the intake pipe 1 at the air outlet 12, and the second mounting opening 14 of the intake pipe 1 is used to install an air heating device.

[0023] Mounting holes 4 are correspondingly provided at the edges of both sides of the intake pipe 1, the bottom plate 2 and the gasket 3. Second connecting bolts are inserted into the mounting holes 4 of the intake pipe 1, the bottom plate 2 and the gasket 3. The intake pipe 1, the bottom plate 2 and the gasket 3 are fixed to the intake side of the engine cylinder head through the second connecting bolts. By integrating the intake temperature sensor and the air heating device on the intake pipe 1 and then installing the intake pipe 1 on the intake side of the engine cylinder head, the engine structure can be compacted.

[0024] Furthermore, a plurality of guide portions 23 are integrally formed on a surface of the base plate 2 facing the intake pipe 1. The plurality of guide portions 23 are spaced apart circumferentially along the base plate 2. The guide portions 23 are used to contact the gasket 3 and the outer wall of the intake pipe 1. During the process of assembling the intake pipe 1, the gasket 3 and the base plate 2, the gasket 3 is assembled with the base plate 2 first, so that the gasket 3 can be easily aligned, and the gasket 3 can be avoided from being offset during the process of connecting the intake pipe 1 with the base plate 2, thereby improving the assembly accuracy.

[0025] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An engine intake pipe, characterized in that: The invention comprises an air intake pipe (1), a base plate (2) and a gasket (3); the air intake pipe (1) is provided with an air intake port (11) and an air outlet port (12); the base plate (2) is connected to the air outlet port (12) on the air intake pipe (1); a plurality of air outlet ports (21) are provided on the base plate (2); the gasket (3) is arranged between the base plate (2) and the air intake pipe (1); the base plate (2) is fixedly connected to the air intake pipe (1) by a plurality of first connecting bolts; a lap ear (22) is integrally provided on one side edge of the base plate (2); a connecting hole is provided on the lap ear (22); the lap ear (22) is used for connecting to a common rail pipe in a fuel supply system.

2. An engine intake pipe according to claim 1, characterized in that: The gasket (3) is made of asbestos paper.

3. The engine intake pipe according to claim 1, characterized in that: A first mounting opening (13) is provided on the outer wall of the air intake pipe (1) at the air intake port (11), and the first mounting opening (13) of the air intake pipe (1) is used for mounting an air intake temperature sensor.

4. An engine intake pipe according to claim 3, characterized in that: A second mounting opening (14) is provided on the outer wall of the air inlet pipe (1) at the air outlet port (12), and the second mounting opening (14) of the air inlet pipe (1) is used for mounting an air heating device.

5. An engine intake pipe according to claim 4, characterized in that: Mounting holes (4) are correspondingly provided on the edges of both sides of the intake pipe (1), the bottom plate (2) and the gasket (3); second connecting bolts are inserted into the mounting holes (4) of the intake pipe (1), the bottom plate (2) and the gasket (3); and the intake pipe (1), the bottom plate (2) and the gasket (3) are fixed to the intake side of the engine cylinder head by the second connecting bolts.

6. An engine intake pipe according to claim 5, characterized in that: A plurality of guide portions (23) are integrally provided on the bottom plate (2), and the guide portions (23) are arranged at intervals along the circumference of the bottom plate (2). The guide portions (23) are used to contact the gasket (3) and the outer wall of the intake pipe (1).

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