Anti-icing air inlet structure of engine

Abstract

The utility model belongs to the technical field of engines, and provides an anti-icing air inlet structure of an engine, an air inlet of a throttle valve is communicated with an air inlet pipe, an air outlet of the throttle valve is communicated with an exhaust pipe, a fixing frame used for being fixedly connected with the engine is arranged on the upper side of the exhaust pipe, and a through hole is formed in the fixing frame. Damping assemblies are symmetrically arranged on the two sides of the bottom of the exhaust pipe, and a heating assembly is arranged around the throttle valve. The damping assembly comprises a mounting plate and a damping pad, the damping pad is made of rubber, the damping pad is cylindrical, and the damping pad is connected with the mounting plate in a clamped mode. When the intake manifold and the engine are assembled, the fixing frame is directly and fixedly connected with the engine through the bolts, and the shock pads are elastic and can be directly clamped with clamping columns on the engine or connected with the engine through the bolts, so that the influence of matching errors is eliminated, and the intake manifold and the engine are convenient to assemble.

Description

TECHNICAL FIELD

[0001] The application relates to an anti-icing engine air intake structure. BACKGROUND

[0002] An air intake manifold is located between the throttle valve and the engine intake valve, and for a carburetor or throttle body gasoline injection engine, the air intake manifold refers to the air intake pipeline from the carburetor or throttle body to the cylinder head air intake passage.

[0003] The air intake manifold is usually fixed on the engine through bolts, in order to ensure reliable fixation of the air intake manifold, the top and bottom of the air intake manifold are usually fixedly connected with the engine, and in actual use, the following technical problems exist: when the top of the air intake manifold is fixed with the engine through bolts, due to the existence of assembly errors, the bolt holes on the lower side of the air intake manifold are prone to the problem of being unable to be aligned with the bolt holes of the engine. CONTENT OF THE UTILITY MODEL

[0004] The utility model solves the technical problems that the existing technology has the defects, and provides an anti-icing engine air intake structure which can eliminate assembly errors and facilitate connection of the air intake manifold with the engine.

[0005] The utility model adopts the technical scheme that an anti-icing engine air intake structure comprises an air inlet pipe, an air outlet pipe, a throttle valve and a damping assembly, the air inlet of the throttle valve is communicated with the air inlet pipe, the air outlet of the throttle valve is communicated with the air outlet pipe, a fixing frame for being fixedly connected with an engine is arranged on the upper side of the air outlet pipe, a through hole is arranged on the fixing frame, the damping assembly is symmetrically arranged on the bottom of the air outlet pipe, a heating assembly is arranged around the throttle valve.

[0006] The damping assembly comprises a mounting plate and a damping pad, the damping pad is made of rubber, the damping pad is in a cylindrical shape, and the damping pad is clamped with the mounting plate.

[0007] Further, the damping pad comprises a damping part, a connecting part and a locking part which are connected in sequence, the damping part, the connecting part and the locking part are coaxially arranged in a circular ring, the inner diameters of the three parts are equal, the outer diameter of the locking part is greater than that of the connecting part and smaller than that of the damping part, and the locking part and the damping part are respectively located on the two sides of the mounting plate.

[0008] Further, the outer diameter of the locking part gradually increases along the direction close to the connecting part, and the damping part gradually decreases along the direction close to the connecting part.

[0009] Further, the two ends of the damping part are provided with chamfers.

[0010] Further, the heating assembly comprises a jacket surrounding the throttle valve, and a liquid inlet pipe and a liquid outlet pipe connected with the jacket.

[0011] Further, the exhaust pipes are arranged in parallel, each of the exhaust pipes is communicated with the distribution chamber, and the throttle valve is communicated with the distribution chamber through the connecting pipe.

[0012] Further, a limiting assembly is arranged between the distribution chamber and the connecting pipe.

[0013] Further, the limiting assembly comprises a limiting groove arranged on the end face of the connecting pipe and a limiting block arranged on the distribution chamber, and the limiting block is arranged in the limiting groove.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The heating assembly can heat the throttle valve, so that the icing phenomenon of the throttle valve is avoided, a fixing frame is arranged on the top of the exhaust pipe, a damping assembly is arranged on the bottom of the exhaust pipe, the damping assembly realizes damping through the damping pad made of rubber material, when the intake manifold is assembled with the engine, the fixing frame is directly fixedly connected with the engine through bolts, the damping pad is directly clamped with the clamping column on the engine or is connected with the engine through bolts, the influence of the matching error is eliminated, and the assembly of the intake manifold and the engine is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 is Figure 1 is an enlarged view of part A in Fig.

[0018] Figure 3 is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 4 is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0020] Figure 5 is Figure 4 is an enlarged view of part B in Fig.

[0021] In the figure: 1, air inlet pipe; 2, exhaust pipe; 3, fixed frame; 4, distribution chamber; 5, mounting plate; 501, mounting portion; 6, first sensor; 7, second sensor; 8, electronic throttle valve; 9, liquid outlet pipe; 10, liquid inlet pipe; 11, fixed column; 12, shock pad; 1201, shock portion; 1202, connecting portion; 1203, locking portion; 13, connecting pipe; 1301, limiting groove; 14, limiting platform. DETAILED DESCRIPTION

[0022] The utility model will be further explained below in combination with specific embodiments, however, people skilled in the art should understand that the detailed description given in combination with the drawings is for better explanation, the structure of the utility model must exceed these limited embodiments, and for some equivalent replacement schemes or common means, the detailed description will not be described in this paper, but still belongs to the protection scope of the application.

[0023] Figures 1-5 It is the best embodiment of the utility model, the following will be combined with the Figures 1-5 The utility model will be further explained.

[0024] Refer to the Figures 1-5 An air inlet structure of anti-icing engine, including air inlet pipe 1, exhaust pipe 2, throttle valve and shock subassembly, the air inlet of throttle valve is linked together with air inlet pipe 1, the air outlet of throttle valve is linked together with exhaust pipe 2, be provided with the fixed frame 3 for being connected with engine on the upside of exhaust pipe 2, be provided with through-hole on fixed frame 3, be provided with shock subassembly on the bottom both sides of exhaust pipe 2 symmetry, be provided with heating subassembly around throttle valve;Shock subassembly includes mounting plate 5 and shock pad 12, shock pad 12 is rubber material, shock pad 12 is cylindrical, shock pad 12 is clamped with mounting plate 5.The heating subassembly of the utility model can heat throttle valve, to avoid the icing phenomenon of throttle valve, secondly, fixed frame 3 is set up on the top of exhaust pipe 2, and shock subassembly is set up on the bottom of exhaust pipe 2, and shock subassembly realizes shock through rubber material shock pad 12, when air inlet manifold and engine are assembled, fixed frame 3 is directly connected with engine by bolt, because shock pad 12 has elasticity, can be directly clamped with the clamping column on engine, or be connected with engine by bolt, eliminates the influence of matching error, and facilitates the assembly of air inlet manifold and engine.

[0025] Specifically, the anti-icing engine air intake structure further comprises a distribution chamber 4, a plurality of exhaust pipes 2 are arranged side by side and at intervals, each exhaust pipe 2 is fixedly connected, and the air inlet end of each exhaust pipe 2 is fixedly connected with the lower part of the distribution chamber 4. The air inlet pipe 1 is arranged on the upper side of the exhaust pipe 2, and the air inlet pipe 1 and the exhaust pipe 2 are located on the same side of the distribution chamber 4. In this embodiment, the throttle valve is an electronic throttle valve 8, the air inlet of the electronic throttle valve 8 is fixedly connected with the air inlet pipe 1, the air outlet of the electronic throttle valve 8 is fixedly connected with the upper part of the distribution chamber 4 through a connecting pipe 13, and the air inlet pipe 1 is used to connect the air outlet of the intercooler. In this embodiment, the exhaust pipe 2 is arranged side by side with three exhaust pipes.

[0026] A first sensor 6 is arranged on the air inlet pipe 1, and a second sensor 7 is arranged on the upper part of the distribution chamber 4. The first sensor 6 is a temperature sensor and is mainly used for detecting the air inlet temperature. The second sensor 7 is a temperature and pressure sensor and is used for detecting the temperature and pressure of the air inlet in real time.

[0027] In this embodiment, the first sensor 6 and the second sensor 7 are both temperature and pressure sensors, wherein the first sensor 6 only uses the temperature detection function of the temperature and pressure sensor.

[0028] The air outlet end of each exhaust pipe 2 is provided with a fixing frame 3, the fixing frame 3 is provided with a through hole to facilitate the fixing frame 3 to be fixedly connected with the engine through bolts, and a damping assembly is symmetrically arranged on the bottom of the distribution chamber 4. The damping assembly is clamped with a pre-set clamping column on the engine and can also be fixed with the engine through bolts. Since the damping assembly has elasticity and can be deformed to a certain extent, the assembly error can be eliminated.

[0029] A fixing column 11 is arranged between each adjacent two exhaust pipes 2, the fixing column 11 is also provided with a through hole, the two sides of the fixing column 11 are fixedly connected with the exhaust pipes 2 on the corresponding side through a rib plate, and the fixing column 11 is fixedly connected with the engine through bolts, so as to ensure that the exhaust pipes 2 are fixedly and reliably connected with the engine.

[0030] In order to prevent the electronic throttle valve 8 from icing, a jacket is arranged around the electronic throttle valve 8 to form a heating assembly arranged around the electronic throttle valve 8. The electronic throttle valve 8 is provided with an inlet pipe 10 and an outlet pipe 9 which are in communication with the jacket. The inlet pipe 10 and the outlet pipe 9 are connected with the cooling liquid circulation pipeline of the snowmobile, so that the electronic throttle valve 8 is heated by the heat absorbed by the cooling liquid of the engine to avoid icing of the electronic throttle valve 8.

[0031] The top of the mounting plate 5 is fixedly connected with the distribution chamber 4, and the lower part of the mounting plate 5 is provided with a mounting portion 501, and the mounting portion 501 is provided with a mounting hole. The damping pad 12 comprises a damping portion 1201, a connecting portion 1202 and a locking portion 1203 which are connected in sequence, the damping portion 1201, the connecting portion 1202 and the locking portion 1203 are coaxially arranged annular rings, and the inner diameters thereof are equal, so as to facilitate clamping with the clamping column reserved on the engine or facilitating connection with the engine through bolts, the outer diameter of the locking portion 1203 is greater than the outer diameter of the connecting portion 1202 and smaller than the outer diameter of the damping portion 1201, the connecting portion 1202 is located in the mounting hole of the mounting portion 501, and the locking portion 1203 and the damping portion 1201 are respectively located on both sides of the mounting portion 501 and clamp the mounting portion 501, so that the fixed installation of the damping pad 12 is realized.

[0032] The outer diameter of the locking portion 1203 gradually increases along the direction close to the connecting portion 1202, and the damping portion 1201 gradually decreases along the direction close to the connecting portion 1202, and both ends of the damping portion 1201 are provided with chamfers, so as to facilitate the installation of the damping pad 12 on the mounting portion 501.

[0033] A limiting assembly is arranged between the distribution chamber 4 and the connecting pipe 13, the limiting assembly comprises a limiting groove 1301 arranged on the end face of the connecting pipe 13 and a limiting table 14 arranged at the air inlet of the distribution chamber 4, the air inlet of the distribution chamber 4 extends into the connecting pipe 13, so that the limiting table 14 enters into the limiting groove 1301, thereby being capable of playing an indicating role during installation and avoiding relative rotation between the connecting pipe 13 and the distribution chamber 4.

[0034] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content into equivalent embodiments. However, any simple modification, equivalent change and modification of the above embodiments without departing from the technical scheme of the present application and according to the technical essence of the present application still belongs to the protection scope of the technical scheme of the present application.

Claims

1. An anti-icing engine air intake structure, characterized by: The application relates to an exhaust pipe for an engine, which comprises an air inlet pipe (1), an exhaust pipe (2), a throttle valve and a damping assembly, the air inlet of the throttle valve is communicated with the air inlet pipe (1), the air outlet of the throttle valve is communicated with the exhaust pipe (2), a fixing frame (3) for fixing connection with the engine is arranged on the upper side of the exhaust pipe (2), a through hole is arranged on the fixing frame (3), the damping assembly is symmetrically arranged on the bottom of the exhaust pipe (2), and a heating assembly is arranged around the throttle valve. The damping assembly comprises a mounting plate (5) and a damping pad (12), the damping pad (12) is made of rubber, the damping pad (12) is in a cylindrical shape, and the damping pad (12) is clamped with the mounting plate (5).

2. The anti-icing engine air intake structure of claim 1, wherein: The damping pad (12) comprises a damping part (1201), a connecting part (1202) and a locking part (1203) which are sequentially connected, the damping part (1201), the connecting part (1202) and the locking part (1203) are coaxially arranged in the form of a ring, the inner diameters of the damping part (1201), the connecting part (1202) and the locking part (1203) are equal, the outer diameter of the locking part (1203) is greater than that of the connecting part (1202) and smaller than that of the damping part (1201), and the locking part (1203) and the damping part (1201) are respectively located on the two sides of the mounting plate (5).

3. An anti-icing engine air intake structure according to claim 2, characterized by: The outer diameter of the locking part (1203) gradually increases along the direction close to the connecting part (1202), and the damping part (1201) gradually decreases along the direction close to the connecting part (1202).

4. An anti-icing engine air intake structure according to claim 2 or 3, characterized in that: Both ends of the damping part are provided with chamfers.

5. The anti-icing engine air intake structure of claim 1, wherein: The heating assembly comprises a jacket arranged around the throttle valve and liquid inlet and outlet pipes (10) and (9) communicated with the jacket.

6. The anti-icing engine air intake structure of claim 1, wherein: The exhaust pipe (2) is arranged in parallel with a plurality of distribution chambers (4), each exhaust pipe (2) is communicated with the distribution chamber (4), and the throttle valve is communicated with the distribution chamber (4) through a connecting pipe (13).

7. An anti-icing engine air intake structure according to claim 6, characterized by: A limiting assembly is arranged between the distribution chamber (4) and the connecting pipe (13).

8. The anti-icing engine air intake structure of claim 7, wherein: The limiting assembly comprises a limiting groove (1301) arranged on the end face of the connecting pipe (13) and a limiting table (14) arranged on the distribution chamber (4), and the limiting table (14) is arranged in the limiting groove (1301).

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