Engine hood

Abstract

The utility model provides an engine hood which comprises a top cover and a heat insulation cover, the heat insulation cover is arranged below the top cover, a plurality of fastening holes are formed in the heat insulation cover, bolts are arranged in the fastening holes, and the heat insulation cover is fixedly connected with the top cover through the bolts. A cooling cavity is formed in the heat insulation cover in a hollow mode, the cooling cavity is filled with cooling liquid, a water inlet and a water outlet are formed in the back face of the heat insulation cover, the water inlet and the water outlet are communicated with the cavity, and the water inlet and the water outlet are connected with an external heat dissipation water tank. Heat generated by the engine can be effectively absorbed, meanwhile, the ventilation structure on the top cover is combined, air convection is formed, the heat dissipation effect is further enhanced, the temperature of the surrounding environment of the engine is effectively reduced, and normal operation of the engine is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of engine parts technology, and in particular to an engine cover. Background Technology

[0002] As the core power component of various mechanical equipment (such as automobiles, construction machinery, etc.), the engine generates a large amount of heat during operation;

[0003] Existing Chinese patent document CN202022155026.7 discloses an engine hood, including an engine housing. A hood body is rotatably connected to the engine housing via a rotating shaft. The top surface of the hood body is provided with a buffer plate, and the bottom surface of the buffer plate is provided with a first buffer pad. The bottom surface of the buffer plate has four sliding pillars arranged in a rectangular array. The top surface of the hood body has four grooves, and the four sliding pillars are inserted into the four grooves. The four sliding pillars and the grooves are connected by a first spring. The engine hood provided by this utility model, by setting a buffer plate on the hood body and connecting the sliding pillars at the bottom of the buffer plate to the grooves on the hood via a first spring, provides good protection for the top of the hood. Furthermore, the cushioning effect of the first spring and the first buffer pad improves the shock absorption of the hood body, making it highly practical.

[0004] However, the above-mentioned patents have certain defects in use. Traditional engine hoods are usually made of single-layer metal or composite material structures. When the engine is running at high temperature, the surface temperature of the hood is too high, which can easily cause thermal radiation damage to the surrounding components. Relying solely on natural convection for heat dissipation makes it difficult to quickly dissipate heat.

[0005] To address these issues, an engine hood is proposed here. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology and solve the problem that the surface temperature of the engine cover is too high and it is difficult to quickly dissipate heat when the engine is running at high temperature, this utility model provides an engine cover.

[0007] This utility model is achieved using the following technical solution:

[0008] An engine hood includes a top cover and a heat insulation cover, the heat insulation cover being disposed below the top cover, the heat insulation cover having a plurality of fastening holes, bolts being disposed in the fastening holes, and the heat insulation cover being fixedly connected to the top cover by bolts;

[0009] The heat insulation cover has a hollow interior with a cooling cavity filled with coolant. The back of the heat insulation cover has an inlet and an outlet, which are connected to the cavity and to an external heat dissipation tank.

[0010] Multiple buffer blocks are provided between the heat insulation cover and the top cover. The top of the buffer block is fixed to the lower surface of the top cover, and the bottom of the buffer block abuts against the fastening hole on the heat insulation cover.

[0011] The top cover has two sets of air inlets on the front, which are symmetrically arranged on both sides of the front of the top cover, and air outlets are symmetrically arranged on both sides of the top cover.

[0012] A filter screen is provided on the back of the air inlet, and the filter screen is snapped onto the top cover.

[0013] Multiple reinforcing tubes are provided between the top cover and the heat insulation cover, and the reinforcing tubes are fixed to the lower surface of the top cover.

[0014] The present invention has the following advantages over the prior art:

[0015] 1. Through the cooling chamber inside the heat insulation cover and the circulation of coolant, the heat generated by the engine can be effectively absorbed. At the same time, combined with the ventilation structure on the top cover, air convection is formed, which further enhances the heat dissipation effect, effectively reduces the ambient temperature around the engine, and ensures the normal operation of the engine.

[0016] 2. The buffer block installed between the heat insulation cover and the top cover can effectively buffer the vibration generated by the engine, reduce the impact of vibration on the engine hood and related components, improve the service life of the engine hood and the operating stability of the engine, and the reinforcing tube installed between the top cover and the heat insulation cover significantly improves the overall structural strength of the engine hood, enabling it to maintain good shape stability when subjected to external impact, and providing reliable protection for the engine. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention;

[0018] Figure 2 This is a utility model Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0019] Figure 3 This is a top view of the present invention;

[0020] Figure 4 This is a rear view of the present invention;

[0021] Figure 5 This is a bottom view of the present invention;

[0022] Figure 6 This is an exploded three-dimensional structural diagram of this utility model;

[0023] In the diagram: 1. Top cover; 11. Air outlet; 12. Air inlet; 2. Filter screen; 3. Heat insulation cover; 31. Fastening hole; 32. Water inlet; 33. Water outlet; 34. Cooling chamber; 4. Buffer block; 5. Reinforcing pipe. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 6 As shown, an engine hood includes a top cover 1 and a heat insulation cover 3. These two components work together to protect the engine. The top cover 1, as the outermost structure of the engine hood, is directly exposed to the external environment and primarily serves to prevent foreign objects from directly impacting the engine, thus avoiding physical damage. The heat insulation cover 3 is located below the top cover 1 and is in direct contact with the engine. It is a key component for heat insulation, effectively preventing the high-temperature heat generated by the engine from being directly transferred to the top cover 1, thereby reducing the overall temperature inside the engine compartment. The heat insulation cover 3 has multiple fastening holes 31, each containing bolts. The heat insulation cover 3 is fixedly connected to the top cover 1 by bolts. This connection method is simple and reliable, easy to install and disassemble, and facilitates subsequent maintenance and repair of the engine hood.

[0027] The heat insulation cover 3 has a hollow interior with a cooling chamber 34 filled with coolant. The circulating coolant effectively absorbs heat generated by the engine, reducing the ambient temperature around the engine. The back of the heat insulation cover 3 has an inlet 32 ​​and an outlet 33, which are connected to the cavity and to an external radiator. Coolant enters the cooling chamber 34 from the radiator through the inlet 32, absorbs heat, and then flows back to the radiator through the outlet 33 for further cooling. This cycle repeats continuously, achieving a sustained cooling effect. The cooling process involves the engine generating a large amount of heat during operation. The coolant inside the heat insulation cover 3 absorbs this heat, increasing its temperature. The hot coolant flows out through the outlet 33 into the external radiator for cooling, and then flows back into the cooling chamber 34 through the inlet 32, thus continuously cooling the engine. Meanwhile, cold air from outside enters the engine hood through the air inlet 12 on the front of the top cover 1, absorbs heat, and is then discharged through the air outlets 11 on both sides, forming air convection and further enhancing the heat dissipation effect.

[0028] Multiple buffer blocks 4 are provided between the heat insulation cover 3 and the top cover 1. The top of the buffer block 4 is fixed to the lower surface of the top cover 1, and the bottom of the buffer block 4 abuts against the fastening hole 31 on the heat insulation cover 3. When the engine vibrates, the buffer block 4 can buffer and dampen the vibration, reducing the impact of the vibration on the top cover 1 and the heat insulation cover 3, and avoiding damage to the engine and related components due to vibration transmission. The buffer block 4 is usually made of elastic materials (such as rubber and polyurethane). These materials have good elasticity and damping characteristics. When the engine vibration is transmitted to the heat insulation cover 3, the heat insulation cover 3 transfers the vibration energy to the buffer block 4. The buffer block 4 undergoes elastic deformation, converting the vibration energy into its own elastic potential energy and internal energy, thereby reducing the vibration energy transmitted to the top cover 1.

[0029] The top cover 1 has two sets of air inlets 12 on its front side, symmetrically arranged on both sides of the front of the top cover 1. The top cover 1 also has symmetrically arranged air outlets 11 on both sides. This symmetrical ventilation structure creates a good airflow channel. External cold air enters the engine hood through the air inlets 12, absorbs heat, and is then discharged through the air outlets 11, further enhancing the heat dissipation effect. When the vehicle is moving or the fan is running, cold air from outside the hood enters the hood through the air inlets 12 under the action of pressure difference. As the cold air flows inside the hood, it comes into contact with components such as the engine and heat shield 3, absorbs heat, and its temperature rises, forming hot air. This hot air is discharged through the air outlets 11 on both sides under the action of buoyancy and pressure difference, thus achieving air convection heat dissipation.

[0030] A filter screen 2 is provided on the back of the air inlet 12, and the filter screen 2 is snapped onto the top cover 1. The filter screen 2 can effectively filter dust, debris, etc. that enter the engine hood, preventing them from entering the engine and affecting its normal operation.

[0031] Multiple reinforcing tubes 5 are provided between the top cover 1 and the heat insulation cover 3, and the reinforcing tubes 5 are fixed to the lower surface of the top cover 1. The reinforcing tubes 5 can significantly improve the overall structural strength of the engine hood, making it less prone to deformation when subjected to external impact, and providing more reliable protection for the engine.

[0032] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An engine cowling characterized by, Including top cover (1) and heat insulation cover (3), heat insulation cover (3) is arranged below top cover (1), a plurality of fastening holes (31) are arranged on heat insulation cover (3), bolts are arranged in fastening holes (31), heat insulation cover (3) and top cover (1) are fixedly connected through bolts; The inside of the heat insulation cover (3) is hollow and provided with a cooling cavity (34), the cooling cavity (34) is filled with cooling liquid, the back of the heat insulation cover (3) is provided with a water inlet (32) and a water outlet (33), the water inlet (32) and the water outlet (33) are communicated with the cavity, the water inlet (32) and the water outlet (33) are connected with the external heat dissipation water tank.

2. An engine cowling as claimed in claim 1 wherein: A plurality of buffer blocks (4) are arranged between the heat insulation cover (3) and the top cover (1), the top of the buffer block (4) is fixed to the lower surface of the top cover (1), and the bottom of the buffer block (4) is abutted with the fastening hole (31) on the heat insulation cover (3).

3. An engine cowling as claimed in claim 1 wherein: The front of the top cover (1) is provided with two groups of air inlets (12), the air inlets (12) are symmetrically arranged on the two sides of the front of the top cover (1), and the two sides of the top cover (1) are symmetrically provided with air outlets (11). The back of the air inlet (12) is provided with a filter screen (2), and the filter screen (2) is clamped on the top cover (1).

4. An engine cowling as claimed in claim 1 wherein: A plurality of reinforcing pipes (5) are arranged between the top cover (1) and the heat insulation cover (3), and the reinforcing pipes (5) are fixed to the lower surface of the top cover (1).

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