CN218509608U

CN218509608U - EGR cooler assembly assembling structure

Info

Publication number: CN218509608U
Application number: CN202223050514.7U
Authority: CN
Inventors: 刘隽撰; 陈黎祥; 张松; 沈赛赛; 邵旸
Original assignee: Chagchai Co ltd
Current assignee: Chagchai Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-02-21
Anticipated expiration: 2032-11-15

Abstract

The utility model relates to a diesel engine part technical field, concretely relates to EGR cooler assembly structure has EGR cooler, diesel engine organism, cylinder head, diesel engine water pump, thermostat assembly, water tank, and the exhaust end of EGR cooler is connected with EGR cooler inlet tube and EGR pipe, and the end of getting of EGR cooler is connected with EGR cooler wet return, and the cylinder head is connected in the top of diesel engine organism, and the EGR cooler is located the top of cylinder head, EGR cooler inlet tube communicate in the diesel engine water pump, EGR cooler wet return communicate in thermostat assembly, diesel engine water pump pipeline communicate in the water tank, and diesel engine water pump communicates in the diesel engine organism. The utility model discloses EGR cooler assembly installs in diesel engine organism top, improves diesel engine complete machine space utilization for EGR cooler part possesses more overall arrangement and selects, and high-order installation space is big, makes things convenient for the dismouting, reduces EGR cooler mounted position's limitation.

Description

EGR cooler assembly assembling structure

Technical Field

The utility model relates to a diesel engine part technical field, concretely relates to EGR cooler assembly structure.

Background

At present, common EGR cooler assemblies are usually arranged below an air inlet pipe or an exhaust pipe on the market, but for a small diesel engine, the space on the air inlet side and the air outlet side is compact, a large number of external parts of the diesel engine, such as an oil pump, a supercharger, an oil cooler, a diesel filter and the like, need to be arranged, particularly, when a matching part is used for the whole vehicle, a supporting position is also needed to be provided for arranging the parts of the whole vehicle, and the rest space gives poor layout selectivity to the EGR cooler assemblies. In addition, most of the traditional EGR cooler assemblies are cooled by a circulating water path in the diesel engine, inlet water and return water are circulated from a water pump and only participate in internal small circulation of the diesel engine, and the water circulation mode has the problems that when the EGR cooler is higher than a water return position, the internal circulating water pressure is low, a vacuum state is easily generated in the EGR cooler, partial water circulation participated by the EGR cooler cannot be completed, heat dissipation cannot be achieved, and the EGR cooler is damaged due to high-temperature dry burning.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art's defect, provide a EGR cooler assembly structure.

Realize the utility model discloses the technical scheme of purpose is: the utility model provides a EGR cooler assembly structure, has EGR cooler, diesel engine organism, cylinder head, diesel engine water pump, thermostat assembly, water tank, the exhaust end of EGR cooler is connected with EGR cooler inlet tube and EGR pipe, the end of getting of EGR cooler is connected with EGR cooler wet return, the upper end of EGR cooler is connected with the EGR valve, the cylinder head connect in the top of diesel engine organism, the EGR cooler is located the top of cylinder head, EGR cooler inlet tube communicate in the diesel engine water pump, EGR cooler wet return communicate in the thermostat assembly, the diesel engine water pump passes through thermostat assembly pipeline communicate in the water tank with the diesel engine organism.

According to the technical scheme, an air inlet pipe is connected to one end of the cylinder cover, which is on the same side as the exhaust end of the EGR cooler, and the air inlet pipe is connected with an air inlet connecting pipe; the air cylinder cover is connected with an exhaust pipe at one end of the same side of the gas taking end of the EGR cooler, the exhaust pipe is connected with an exhaust connecting pipe, the EGR pipe is connected with the gas inlet pipe, and the rear end of the EGR cooler is connected with the exhaust connecting pipe.

According to the technical scheme, the diesel engine body and one end, on the same side of the exhaust end of the EGR cooler, of the diesel engine body are connected with the engine oil cooler, the pipeline of the water inlet pipe of the EGR cooler is connected to the engine oil cooler, and the pipeline of the engine oil cooler is connected to the diesel engine water pump.

According to the technical scheme, the air inlet connecting pipe is connected with an EGR cooler support, and the EGR cooler support is connected to the exhaust end of the EGR cooler.

According to the technical scheme, bolt fixing holes are formed in the front end and the rear end of the EGR cooler support.

According to the technical scheme, the welding bracket is arranged below the middle of the EGR cooler.

After the technical scheme is adopted, the utility model discloses following positive effect has:

(1) The utility model discloses EGR cooler assembly installs in diesel engine organism top, can serve small-size diesel engine and the sufficient diesel engine model in headspace, improves diesel engine complete machine space utilization for EGR cooler part possesses more overall arrangement and selects, and high-order installation space is big, makes things convenient for the dismouting, reduces EGR cooler mounted position's limitation.

(2) The utility model discloses in the hydrologic cycle of EGR cooler participated in the outside hydrologic cycle of diesel engine organism, solved the latent problem of high-order installation, and the water pressure of big circulating water route is stable, and cooling efficiency is high, improves EGR cooler's cooling effect, increase of service life.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a conventional EGR cooler water circulation scheme;

fig. 4 is a schematic diagram of the water circulation scheme of the present invention.

In the figure: the engine oil cooler comprises an EGR cooler 1, a diesel engine body 2, a cylinder cover 3, a diesel engine water pump 4, a thermostat assembly 8, a water tank 5, an EGR cooler water inlet pipe 11, an EGR pipe 12, an EGR cooler water return pipe 13, an EGR valve 6, an air inlet pipe 31, an air inlet connecting pipe 32, an exhaust pipe 33, an exhaust connecting pipe 34, an engine oil cooler 21, an EGR cooler support 7, a bolt fixing hole 71 and a welding support 14.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

See fig. 1-4, the utility model provides a EGR cooler assembly structure has EGR cooler 1, diesel engine organism 2, cylinder head 3, diesel engine water pump 4, thermostat assembly 8, water tank 5, the exhaust end of EGR cooler 1 is connected with EGR cooler inlet tube 11 and EGR pipe 12, the end of getting gas of EGR cooler 1 is connected with EGR cooler wet return 13, the upper end of EGR cooler 1 is connected with EGR valve 6, and cylinder head 3 is connected in the top of diesel engine organism 2, and EGR cooler 1 is located the top of cylinder head 3, EGR cooler inlet tube 11 communicate in diesel engine water pump 4, EGR cooler wet return 13 communicate in thermostat assembly 8, diesel engine water pump 4 communicates in water tank 5 and diesel engine organism 2 through thermostat assembly 8 pipeline. With fig. 1 as a perspective, the exhaust end of the EGR cooler 1 is located at the front end, and the intake end of the EGR cooler 1 is located at the rear end. The utility model discloses a top in cylinder head 3 and diesel engine organism 2 is installed to EGR cooler 1, mainly serves small-size diesel engine and the sufficient model of headspace, improves diesel engine complete machine space utilization for EGR cooler part possesses more overall arrangement and selects, and high-order installation space is big, makes things convenient for the dismouting, reduces EGR cooler mounted position's limitation. The EGR cooler 1 and the EGR valve 6 are designed and connected integrally, the space occupation rate can be reduced, and the EGR valve 6 is used for monitoring by a sensor, collecting data and controlling the gas flow. The water of the diesel engine water pump 4 is respectively circulated and communicated to the diesel engine body 2 and the EGR cooler 1, the water inlet pipe 11 of the EGR cooler and the water return pipe 13 of the EGR cooler are both arranged outside the front side and the rear side of the diesel engine body 2, the EGR cooler 1 is arranged at a high position, water is returned to the external water circulation of the diesel engine oil 2 in a water circulation mode, the circulating water pressure is large, the EGR cooler 1 is not easy to generate a vacuum state, and the problems of vacuum and heat dissipation are effectively solved. Diesel engine water pump 4 and thermostat assembly 8 formula as an organic whole are connected, and diesel engine water pump 4 provides power for the pipe-line transportation of cooling water, and thermostat assembly 8 includes the thermostat and connects the end cover etc. on the thermostat, communicates or closes whole hydrologic cycle through opening and close. Specifically, when the thermostat is opened, the water of the diesel engine water pump 4 can flow back to the water tank 5 through the thermostat; when the thermostat is closed, the water of the diesel engine water pump 4 can only return to the inside of the diesel engine.

In the present embodiment, an intake pipe 31 is connected to one end of the cylinder head 3 on the same side as the exhaust end of the EGR cooler 1, and the intake pipe 31 is connected to an intake adapter 32; an exhaust pipe 33 is connected to one end of the cylinder head 3 on the same side as the gas intake end of the EGR cooler 1, an exhaust connection pipe 34 is connected to the exhaust pipe 33, the EGR pipe 12 is connected to the gas intake pipe 31, and the rear end of the EGR cooler 1 is connected to the exhaust connection pipe 34.

In order to realize the dual-purpose of cooling water, one end of the diesel engine body 2, which is on the same side as the exhaust end of the EGR cooler 1, is connected with an oil cooler 21, a water inlet pipe 11 of the EGR cooler is connected with the oil cooler 21 through a pipeline, and the oil cooler 21 is connected with a diesel engine water pump 4 through a pipeline. Cold water in the water tank 5 enters the engine oil cooler 21 through the diesel engine water pump 4, and after the engine oil cooler 21 cools the engine oil, the cold water enters the EGR cooler 1 through the EGR cooler water inlet pipe 11, then returns to the thermostat assembly 8, and finally returns to the water tank 5. The engine oil temperature inside the diesel engine body 2 is lower than the exhaust gas temperature just entering the EGR cooler 1, the same cooling water can be used for two purposes while ensuring the cooling effect, the arrangement of water circulation water paths is reduced, and the structure is simplified. Water after cooling machine oil passes through EGR cooler inlet tube 11 to EGR cooler 1's exhaust end, and the rivers direction is opposite with the flow direction of high temperature waste gas, can improve the cooling effect, through EGR cooler 1 back, the return water reaches thermostat assembly 8, walks the external water circulation return water of diesel engine at last and reaches water tank 5 and radiator.

The intake nipple 32 is connected with an EGR cooler holder 7, the EGR cooler holder 7 is connected with the exhaust end of the EGR cooler 1, and the EGR cooler holder 7 serves to reinforce the fixation of the intake nipple 32 and the exhaust end of the EGR cooler 1.

Bolt fixing holes 71 are formed in the front end and the rear end of the EGR cooler support 7, and installation is facilitated.

The welding bracket 14 is arranged below the middle of the EGR cooler 1, and the bracket can be used for fixing and supporting the middle position according to different assembling conditions, so that the installation stability of the EGR cooler assembly is improved.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An EGR cooler assembly fitting structure characterized in that: EGR cooler (1), diesel engine organism (2), cylinder head (3), diesel engine water pump (4), thermostat assembly (8), water tank (5) have, the exhaust end of EGR cooler (1) is connected with EGR cooler inlet tube (11) and EGR pipe (12), the end of getting gas of EGR cooler (1) is connected with EGR cooler wet return (13), the upper end of EGR cooler (1) is connected with EGR valve (6), cylinder head (3) connect in the top of diesel engine organism (2), EGR cooler (1) is located the top of cylinder head (3), EGR cooler inlet tube (11) communicate in diesel engine water pump (4), EGR cooler wet return (13) communicate in thermostat assembly (8), diesel engine water pump (4) pass through thermostat assembly (8) pipeline communicate in water tank (5) with diesel engine organism (2).

2. An EGR cooler assembly fitting structure according to claim 1, wherein: an air inlet pipe (31) is connected to one end of the cylinder head (3) on the same side as the exhaust end of the EGR cooler (1), and the air inlet pipe (31) is connected with an air inlet connecting pipe (32); the cylinder head (3) with the one end of the end homonymy of getting of EGR cooler (1) is connected with blast pipe (33), blast pipe (33) are connected with exhaust takeover (34), EGR pipe (12) connect in intake pipe (31), the rear end of EGR cooler (1) connect in exhaust takeover (34).

3. An EGR cooler assembly fitting structure according to claim 1, wherein: the exhaust end of the diesel engine body (2) and the exhaust end of the EGR cooler (1) are arranged on the same side, one end of the EGR cooler is connected with an engine oil cooler (21), a water inlet pipe (11) of the EGR cooler is connected to the engine oil cooler (21) through a pipeline, and the engine oil cooler (21) is connected to the diesel engine water pump (4) through a pipeline.

4. An EGR cooler assembly fitting structure according to claim 2, wherein: the air inlet connecting pipe (32) is connected with an EGR cooler support (7), and the EGR cooler support (7) is connected to the exhaust end of the EGR cooler (1).

5. An EGR cooler assembly fitting structure according to claim 4, wherein: and the front end and the rear end of the EGR cooler support (7) are provided with bolt fixing holes (71).

6. An EGR cooler assembly fitting structure according to claim 4, wherein: and a welding bracket (14) is arranged below the middle of the EGR cooler (1).