Front air inlet structure of heavy truck

Abstract

The utility model provides a front-mounted air inlet structure of a heavy truck, which comprises a front face shield grating, an air collecting cavity, a first air guide pipe, an air inlet channel, a second air guide pipe and an air filter which are sequentially arranged from front to back, the front face shield grating is used as an air inlet grating, the air collecting cavity is arranged on the air inlet grating, and the first air guide pipe is communicated with the air inlet channel. The front end part is provided with an air collecting port matched with the air inlet grille, the rear end part is provided with an air outlet, the first air guide pipe gradually extends upwards in the direction from front to back, the front end part can be attached to the air outlet of the air collecting cavity in a sealed mode, and the air inlet channel is horizontally arranged in the direction from front to back; the front end part and the rear end part are respectively connected with the rear end part of the first air guide pipe and the front end part of the second air guide pipe, the second air guide pipe gradually extends downwards from front to back, and the air filter is connected with the rear end part of the second air guide pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile manufacturing, and particularly relates to a front-mounted air intake structure for heavy trucks. Background Art

[0002] At present, heavy trucks generally adopt rear-mounted air intakes, enabling more fresh air to smoothly enter the cylinders and fully mix with the fuel, thereby achieving more complete combustion, releasing more energy, and enhancing the power output of the engine.

[0003] However, the rear-mounted air intake structure has the following disadvantages: (1) limited by the external structure, the air intake volume is too small; (2) the air intake passage is relatively long, and the air flows from top to bottom, resulting in an increase in air intake resistance, affecting the charging efficiency of the engine, and thus reducing the power performance of the engine to a certain extent. Summary of the Utility Model

[0004] To address the deficiencies of the above prior art, the purpose of the present utility model is to provide a front-mounted air intake structure for heavy trucks.

[0005] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0006] The present utility model provides a front-mounted air intake structure for heavy trucks, which has the following characteristics: including a front grille, an air collecting cavity, a first air duct, an air intake passage, a second air duct, and an air filter arranged in sequence from front to back. Among them, the front grille serves as an air intake grille, the air collecting cavity is arranged on the air intake grille, the front end has an air collecting port matching the air intake grille, the rear end has an air outlet, the first air duct gradually extends upward along the front-to-back direction, the front end can be hermetically fitted with the air outlet of the air collecting cavity, the air intake passage is horizontally arranged along the front-to-back direction, the front end and the rear end are respectively connected to the rear end of the first air duct and the front end of the second air duct, the second air duct gradually extends downward along the front-to-back direction, and the air filter is connected to the rear end of the second air duct.

[0007] In the front-mounted air intake structure for heavy trucks provided by the present utility model, it may also have the following characteristics: a pest control net is provided at the air collecting port.

[0008] In the front-mounted air intake structure for heavy trucks provided by the present utility model, it may also have the following characteristics: an expansion joint for hermetically fitting with the air outlet of the air collecting cavity is provided at the front end of the first air duct.

[0009] In the front-mounted air intake structure for heavy trucks provided by the present utility model, it may also have the following characteristics: both the first air duct and the second air duct are corrugated pipes.

[0010] In the front-mounted air intake structure for heavy trucks provided by the present utility model, it may further have the following feature: A wind deflector is provided at the inner bottom position of the rear end of the air intake passage.

[0011] In the front-mounted air intake structure for heavy trucks provided by the present utility model, it may further have the following feature: A raised portion is provided upward at the inner bottom position of the middle part of the air intake passage.

[0012] Compared with the prior art, the advantages of the present utility model are as follows: The air intake structure is arranged at the front end of the vehicle and cooperates with the original front grille, having a relatively large air intake area. Especially when the vehicle is running, it is convenient to increase the air flow rate, thereby improving the charging efficiency of the engine, enhancing the power performance of the engine, and improving fuel economy; The air flow path from front to back can effectively reduce the air intake resistance and enhance the power performance. Moreover, the overall layout is relatively simple, reducing the complexity and cost of design and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective structural view of the front-mounted air intake structure in the embodiment of the present utility model;

[0014] Figure 2 is a partial structural view of the air intake grille, air collecting cavity and insect-proof net in the embodiment of the present utility model;

[0015] Figure 3 is a structural view of the air collecting cavity, expansion joint, first air duct and air intake passage in the embodiment of the present utility model;

[0016] Figure 4 is a sectional structural view of the first air duct, air intake passage and first air duct in the embodiment of the present utility model;

[0017] Figure 5 is a schematic diagram of the air flow direction of the front-mounted air intake structure in the embodiment of the present utility model; and

[0018] Figure 6 is a three-dimensional air flow direction schematic diagram of the front-mounted air intake structure in the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will further illustrate the concept, specific structure and technical effects generated by the present utility model in conjunction with the drawings, so as to fully understand the purpose, features and effects of the present utility model.

[0020] <Embodiment>

[0021] Reference Figures 1 to 4, this embodiment provides a front-mounted intake structure for heavy trucks, including: a front grille 1, a gas collecting cavity 3, a first air duct 5, an air intake passage 6, a second air duct 7, and an air filter 8 arranged in sequence from front to back.

[0022] The front grille 1 serves as an intake grille.

[0023] The gas collecting cavity 3 is arranged on the intake grille 1 and is used to collect the air entering through the intake grille 1. The front end of the gas collecting cavity 3 has a gas collecting port matching the intake grille 1, and the rear end has an air outlet. In this embodiment, an insect-proof net 2 with a pore diameter of 2 mm is provided at the gas collecting port of the gas collecting cavity 3 to block flying stones and insects during vehicle driving, so as to ensure that the air entering the gas collecting cavity 3 has no large particle impurities.

[0024] The first air duct 5 is a corrugated pipe that gradually extends upward along the front-to-back direction. It can effectively filter the moisture and dust in the air during the process of introducing the air upward into the air intake passage 6, enhancing the air purity. The front end of the first air duct 5 can be hermetically fitted with the air outlet of the gas collecting cavity 3; in this embodiment, an expansion joint 4 for hermetically fitting with the air outlet of the gas collecting cavity 3 is provided at the front end of the first air duct 5, which is convenient for separating the gas collecting cavity 3 from the first air duct 5 when the front grille of the heavy truck is opened, and can also hermetically connect the first air duct 5 with the air outlet of the gas collecting cavity 3 when the front grille of the heavy truck is closed, ensuring the smoothness of the air duct.

[0025] The air intake passage 6 is horizontally arranged along the front-to-back direction, and its front end and rear end are respectively connected to the rear end of the first air duct 5 and the front end of the second air duct 7. In this embodiment, a wind deflector 9 is provided at the inner bottom position of the rear end of the air intake passage 6 to lift the air again and filter the moisture and dust in the air again; an upward protrusion 10 is provided at the inner bottom position of the middle part of the air intake passage 6, which can effectively rectify the air, reduce the intake resistance, and increase the flow rate.

[0026] The second air duct 7 is a corrugated pipe that gradually extends downward along the front-to-back direction. It can increase the flow rate of the air during the process of introducing the air downward into the air filter 8, and filter the moisture and dust in the air again, further enhancing the air purity.

[0027] The air filter 8 is connected to the rear end of the second air duct 7.

[0028] In this embodiment, the air intake passage 6 is arranged at the bottom of the cab, which does not affect the overall shape of the vehicle, improves the air flow during vehicle driving, and reduces the wind resistance. Compared with the prior art, the internal space of the cab can be increased.

[0029] Reference Figure 4 and Figure 5, the working principle of the heavy truck front-mounted intake structure in this embodiment is as follows:

[0030] During the driving of the heavy truck, the air entering through the intake grille 1 is collected in the air collecting cavity 3 and then enters the first air duct 5.

[0031] While introducing the air upward into the intake passage 3, the first air duct 5 filters out part of the moisture and dust in the air.

[0032] The air entering the intake passage 3 is first lifted again by the windshield 9 to filter out moisture and dust, and then rectified and accelerated by the protrusion 10.

[0033] The air flowing out of the intake passage 3 is accelerated by the second air duct 7 and filtered out moisture and dust again, and then enters the air filter 8.

[0034] The above implementation manner is a preferred case of the present invention and is not used to limit the protection scope of the present invention.

Claims

1. A front-mounted intake structure for heavy trucks, characterized in that, Including: A front mask grille, an air collecting cavity, a first air duct, an air inlet passage, a second air duct, and an air filter arranged in sequence from front to back, wherein the front mask grille serves as an air intake grille, the air collecting cavity is arranged on the air intake grille, has an air collecting port matching the air intake grille at the front end, and has an air outlet at the rear end, the first air duct gradually extends upward along the direction from front to back, and the front end can be hermetically fitted with the air outlet of the air collecting cavity, the air inlet passage is horizontally arranged along the direction from front to back, and the front end and the rear end are respectively connected to the rear end of the first air duct and the front end of the second air duct, the second air duct gradually extends downward along the direction from front to back, and the air filter is connected to the rear end of the second air duct.

2. The heavy truck front-mounted air intake structure according to claim 1, characterized in that: Among them, An insect-proof net is provided at the air collecting port.

3. The heavy truck front-mounted air intake structure according to claim 1, characterized in that: Among them, the front end of the first air duct is provided with an expansion joint for hermetically fitting with the air outlet of the air collecting cavity.

4. The heavy truck front-mounted air intake structure according to claim 1, characterized in that: Among them, Both the first air duct and the second air duct are corrugated pipes.

5. The heavy truck front-mounted air intake structure according to claim 1, characterized in that: Among them, A wind deflector is provided at the inner bottom position of the rear end of the air inlet passage.

6. The heavy truck front-mounted air intake structure according to claim 1, characterized in that: Among them, A protrusion is provided upward at the inner bottom position of the middle part of the air inlet passage.

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