Engine cover and engine

Abstract

The utility model discloses an engine cover cap which comprises a cover cap body and a cover plate installed on the cover cap body in a matched mode, a cavity allowing oil gas to circulate is formed between the cover cap body and the cover plate, and the cover plate is provided with an air inlet, an oil return channel and an oil gas separation box. The oil-gas separation box is arranged between the gas inlet and the oil return channel, the oil-gas separation box comprises a vertical plate, a blocking piece, a rear plate and a bottom plate, a space used for containing the blocking piece is formed between the rear plate and the vertical plate, and the bottom plate extends towards the oil return channel from the bottom end of the vertical plate and covers the space above the oil return channel. According to the engine cover, the bottom plate covers the space above the oil return channel, so that an independent space is formed between the bottom plate and the oil return channel, even if oil is not discharged from the oil return channel in time, the oil can be blocked by the bottom plate in the independent space, and the problem that the oil flows disorderly is effectively reduced or avoided.

Description

Technical Field

[0001] The utility model particularly relates to an engine cover and an engine comprising the engine cover. Background Art

[0002] The engine hood is a cover covering the engine cylinder block to prevent external impurities from entering the engine. In order to reduce the operating cost of the engine and to minimize the discharge of oil with oil and gas, most existing engine hoods are integrated with oil and gas separation devices.

[0003] In the existing oil-gas separation device scheme, in order to facilitate oil return, the oil return channel is generally directly connected to the cavity without obstruction. However, if the oil after passing through the oil-gas separation box cannot be discharged from the oil return hole in time, it will form accumulation in the high-load cover plate. When the engine is driving in a car, if it encounters a bumpy road section, the oil in the engine will inevitably shake out of the engine cover with the bumps of the car. For example, in the patent with publication number CN215907964U and the name of the engine cover, the top of the oil return channel is unobstructed and directly connected to the cavity, which poses a risk of oil accumulation, backflow to the cavity and out of the engine cover. Utility Model Content

[0004] In view of this, in order to solve the problems in the prior art, the utility model provides an engine hood with an improved structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An engine hood comprises a hood body and a cover plate mounted on the hood body, a cavity for oil and gas circulation is formed between the hood body and the cover plate, an air inlet, an oil return channel and an oil-gas separation box are provided on the cover plate, the oil-gas separation box is arranged between the air inlet and the oil return channel, the oil-gas separation box comprises a vertical plate, a baffle, a rear plate and a bottom plate, a space for accommodating the baffle is formed between the rear plate and the vertical plate, and the bottom plate extends from the bottom end of the vertical plate toward the oil return channel and covers the space above the oil return channel.

[0007] According to some preferred implementation aspects of the utility model, the bottom plate extends from the bottom end of the vertical plate toward the oil return channel and covers the space above the oil return channel and extends all the way to the edge of the cavity, so that the bottom plate, the cover plate, the cover body and the bottom of the vertical plate cooperate to form an independent space, which can effectively contain the oil when it is not discharged from the oil return channel in time and forms an accumulation, thereby reducing or avoiding the chaos of the oil.

[0008] According to some preferred implementation aspects of the utility model, the bottom plate is provided with a first oil outlet that runs through the bottom plate in the thickness direction, and the first oil outlet is correspondingly arranged between the oil return channel and the vertical plate. Preferably, it is arranged below the baffle. More preferably, it is correspondingly arranged below the side of the baffle close to the rear plate. The baffle is preferably felt.

[0009] According to some preferred implementation aspects of the utility model, the bottom plate is provided with a second oil outlet penetrating the bottom plate in its thickness direction, and the second oil outlet is correspondingly arranged between the oil return channel and the edge of the cavity along the length direction of the bottom plate.

[0010] According to some preferred implementation aspects of the utility model, a convex plate extending from the bottom plate toward a side away from the oil return channel is provided between the first oil outlet and the second oil outlet.

[0011] According to some preferred implementation aspects of the utility model, the projection of the oil return channel on the bottom plate does not overlap with the first oil outlet and / or the second oil outlet, thereby extending the distance that the oil accumulated in the oil return channel moves to the upper space of the bottom plate, and reducing or avoiding the chaotic movement of the oil accumulated in the oil return channel.

[0012] According to some preferred implementation aspects of the utility model, the oil return channel has a vertical channel close to one side of the cavity width direction, and the second oil outlet is arranged on the side of the bottom plate away from the vertical channel, thereby extending the distance that the oil accumulated in the oil return channel moves to the upper space of the bottom plate.

[0013] According to some preferred implementation aspects of the utility model, there is a gap between the bottom surface of the bottom plate and the top surface of the oil return channel to form a separate space, so that the oil accumulated in the oil return channel will be accommodated inside when it flows back, and will not directly run into the upper space of the bottom plate.

[0014] According to some preferred implementation aspects of the utility model, the bottom plate is arranged in an arc shape, thereby increasing the volume of the space between the bottom plate and the cover plate.

[0015] The utility model also provides an engine comprising the engine cover as described above.

[0016] Compared with the prior art, the utility model is advantageous in that the engine hood of the utility model covers the space above the oil return channel with a bottom plate, so that an independent space is formed between the bottom plate and the oil return channel. Even if the oil is not discharged from the oil return channel in time, it will be blocked by the bottom plate in the independent space, thereby effectively reducing or avoiding the occurrence of the problem of oil chaos. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the engine cover in the preferred embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the engine cover in the preferred embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure after the cover plate and the oil-gas separation box are installed in the preferred embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the cover plate in the preferred embodiment of the utility model;

[0022] Among them: cover body -1, baffle -11, cover plate -2, air inlet -21, oil return channel -22, second oil return channel -23, vertical channel -24, inclined channel -25, oil-gas separation box -3, vertical plate -31, baffle -32, rear plate -33, bottom plate -34, first oil outlet -35, second oil outlet -36, convex plate -37. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] The engine in this embodiment has Figure 1-4 The engine hood shown. The engine hood includes a hood body 1 and a cover plate 2 mounted on the hood body 1. A cavity is formed between the hood body 1 and the cover plate 2 for the oil and gas generated by the engine to circulate. The cover plate 2 has an air inlet 21, an oil return channel 22, a second oil return channel 23 and an oil and gas separation box 3. The oil and gas separation box 3 is arranged between the air inlet 21 and the oil return channel 22 to block the oil in the oil and gas generated by the engine and leak it through the oil return channel 22. The second oil return channel 23 is located between the oil and gas separation box 3 and the air inlet 21.

[0025] The inner wall of the cover body 1 is provided with a baffle 11 and baffle ribs to initially absorb the oil in the oil gas and leak it out through the second oil return channel 23. The air inlet 21 takes in air in a direction away from the oil-gas separation box 3, and the oil outlet direction of the second oil return channel 23 is away from the air inlet direction of the air inlet 21.

[0026] The oil-gas separation box 3 includes a vertical plate 31, a baffle 32, a rear plate 33 and a bottom plate 34. A space for accommodating the baffle 32 is formed between the rear plate 33 and the vertical plate 31. The bottom plate 34 extends from the bottom end of the vertical plate 31 toward the oil return channel 22 and covers the space above the oil return channel 22 and extends all the way to the edge of the cavity. The bottom plate 34, the cover plate 2, the cover body 1 and the bottom of the vertical plate 31 cooperate to form an independent space, which can effectively accommodate the oil when it is not discharged from the oil return channel 22 in time to form an accumulation, thereby reducing or avoiding the disorder of the oil.

[0027] The bottom plate 34 is provided with a first oil outlet 35 and a second oil outlet 36 that pass through the thickness direction thereof, and a convex plate 37 extending from the bottom plate 34 toward the side away from the oil return channel 22 is provided between the first oil outlet 35 and the second oil outlet 36. The first oil outlet 35 is correspondingly arranged between the oil return channel 22 and the vertical plate 31. It is preferably arranged below the baffle 32. More preferably, it is correspondingly arranged below the side of the baffle 32 close to the rear plate 33. The baffle 32 is preferably made of felt. The second oil outlet 36 is correspondingly arranged between the oil return channel 22 and the edge of the cavity along the length direction of the bottom plate 34.

[0028] The upper part of the vertical plate 31 has a channel through its thickness to filter the oil and gas into the baffle 32. Preferably, the side of the vertical plate 31 facing the air intake is inclined, gradually approaching the baffle 32 from bottom to top, so as to better filter and return the oil.

[0029] The projection of the oil return channel 22 on the bottom plate 34 does not overlap with the first oil outlet 35 and the second oil outlet 36. The distance that the oil accumulated in the oil return channel 22 moves to the upper space of the bottom plate 34 is extended, and the oil accumulated in the oil return channel 22 is reduced or prevented from running around. The convex plate 37 is correspondingly arranged at the edge position of the projection of the oil return channel 22 on the bottom plate 34.

[0030] The oil return channel 22 has a vertical channel 24 near one side of the cavity width direction and an inclined channel 25 near the other side, and the inclined channel 25 and the vertical channel 24 are connected. The bottom of the inclined channel 25 gradually decreases toward the vertical channel 24 to minimize the accumulation of oil. The second oil outlet 36 is set on the side of the bottom plate 34 away from the vertical channel 24 to extend the distance that the oil accumulated in the oil return channel 22 moves to the upper space of the bottom plate 34. The top surface of the cover plate 2 corresponding to the bottom plate 34 is inclined toward the oil return channel 22 to facilitate oil return.

[0031] There is a gap between the bottom surface of the bottom plate 34 and the top surface of the oil return channel 22 to form a separate space, so that the oil accumulated in the oil return channel 22 will be contained in the space when it flows back, and will not directly flow into the upper space of the bottom plate 34. The bottom plate 34 is arranged in an arc shape, with the middle position in the width direction being the highest, and gradually tilting toward both sides and downward, so as to increase the space volume between the bottom plate 34 and the cover plate 2.

[0032] The working process of the engine cover structure in this embodiment is briefly described below:

[0033] The oil and gas generated by the engine enter through the air inlet 21 of the cover plate 2, and then pass through the baffle 11 and the baffle rib of the cover body 1. The oil in the air will be adsorbed on the baffle 11 and the baffle rib, and then drip into the second oil return channel 23 below and leak out.

[0034] After simple filtration, the oil and gas pass through the oil and gas separation box 3, and the oil is adsorbed by the baffle 32, and the oil drips to the top surface of the cover plate 2 through the second oil outlet 36, and leaks out from the oil return channel 22. In order to prevent the oil from accumulating and running around during driving, a bottom plate 34 extending as far back as possible is set in the oil and gas separation box 3 so that the position of the accumulated oil forms an independent space, and the distance that the oil accumulated in the oil return channel 22 moves to the upper space of the bottom plate 34 is extended, so as to increase the accommodation space of the oil return channel 22.

[0035] In the existing engine hood, if the oil after passing through the oil-gas separation box 3 cannot be discharged from the oil return hole in time, it will form an accumulation in the cover plate 2, and may scatter and cause adverse effects. The engine hood of the utility model, by covering the bottom plate 34 in the space above the oil return channel 22, forms an independent space between the bottom plate 34 and the oil return channel 22. Even if the oil is not discharged from the oil return channel 22 in time, it will be contained in the independent space as much as possible and blocked by the bottom plate 34, effectively reducing or avoiding the problem of oil scattering.

[0036] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An engine hood, comprising a hood body and a cover plate mounted on the hood body, wherein a cavity for oil and gas circulation is formed between the hood body and the cover plate, wherein the cover plate has an air inlet, an oil return channel and an oil-gas separation box, wherein the oil-gas separation box is arranged between the air inlet and the oil return channel, and wherein: The oil-gas separation box includes a vertical plate, a baffle, a rear plate and a bottom plate, a space for accommodating the baffle is formed between the rear plate and the vertical plate, and the bottom plate extends from the bottom end of the vertical plate toward the oil return channel and covers the space above the oil return channel.

2. The engine cover according to claim 1, characterized in that: The bottom plate extends from the bottom end of the vertical plate toward the oil return channel and covers the space above the oil return channel and extends to the edge close to the cavity.

3. The engine cover according to claim 1, characterized in that: The bottom plate is provided with a first oil outlet penetrating the bottom plate in its thickness direction, and the first oil outlet is correspondingly arranged between the oil return channel and the vertical plate.

4. The engine cover according to claim 3, characterized in that: The bottom plate is provided with a second oil outlet penetrating the bottom plate in its thickness direction. The second oil outlet is correspondingly arranged between the oil return channel and the edge of the cavity along the length direction of the bottom plate.

5. The engine cover according to claim 4, characterized in that: A convex plate extending from the bottom plate toward a side away from the oil return channel is provided between the first oil outlet and the second oil outlet.

6. The engine cover according to claim 4, characterized in that: A projection of the oil return channel on the bottom plate does not overlap with the first oil outlet and / or the second oil outlet.

7. The engine cover according to claim 4, characterized in that: The oil return channel has a vertical channel close to one side in the width direction of the cavity, and the second oil outlet is arranged on a side of the bottom plate away from the vertical channel.

8. The engine cover according to claim 1, characterized in that: A gap is provided between the bottom surface of the bottom plate and the top surface of the oil return channel.

9. The engine cover according to any one of claims 1 to 8, characterized in that: The bottom plate is arranged in an arc shape.

10. An engine, characterized in that: Comprising the engine cover as described in any one of claims 1-9.

Images