CN212583843U

CN212583843U - EGR hybrid system, engine and automobile

Info

Publication number: CN212583843U
Application number: CN202021232474.6U
Authority: CN
Inventors: 李俊琦; 李德胜; 闫乐乐
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-02-23
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a EGR hybrid system, it includes: an air inlet pipe (5) for fresh air to enter; an EGR exhaust line (7) through which exhaust gas flows; EGR mixed structure (6), the section of admitting air of EGR mixed structure (6) with EGR exhaust gas line (7) intercommunication, the section of giving vent to anger of EGR mixed structure (6) is located in intake pipe (5), and the section of giving vent to anger has venthole (4), EGR mixed structure (6) with the opposite end of the lateral wall of intake pipe (5) has and is used for keeping apart intake pipe (5) with sealing member (2) of EGR mixed structure (6). The utility model provides a EGR hybrid system, stretches into in the intake pipe with EGR mixed structure to keep apart between the pipe wall of EGR mixed structure and intake pipe sealed, prevent that EGR waste gas among the EGR mixed structure from blowing to the pipe wall of intake pipe through the tip, thereby alleviated the frozen problem of intake pipe wall. In addition, an engine and an automobile with the EGR hybrid system are also disclosed.

Description

EGR hybrid system, engine and automobile

Technical Field

The utility model relates to a EGR mixing arrangement technical field, in particular to car and engine, more particularly relate to an EGR hybrid system.

Background

The EGR hybrid system includes: the air inlet connecting pipe, the EGR mixed structure and the EGR waste gas pipeline. At present, to the model that the arrangement space is little, the intake is taken over pipeline length is limited, can't realize the natural mixing, adopts the formula of punching mixed structure usually, increases the structure of punching promptly in the mixed section, lets EGR waste gas and fresh air intensive mixing, reaches the good purpose of each jar EGR homogeneity. However, after the EGR exhaust gas passes through the EGR mixing structure, the EGR exhaust gas directly rushes to the wall surface of the intake connecting pipe, when the engine is in a cold environment, the temperature of the wall surface is low, and water in the EGR exhaust gas is easily separated out to cause icing, so that the normal use of the engine is influenced.

Therefore, how to provide an EGR hybrid system to reduce the icing rate is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a EGR hybrid system to reduce the rate of icing. Furthermore, the utility model also provides an engine and car of having above-mentioned EGR hybrid system.

In order to achieve the above object, the utility model provides a following technical scheme:

an EGR hybrid system, comprising:

an air inlet pipe for fresh air to enter;

an EGR exhaust line through which exhaust gas flows;

EGR mixed structure, EGR mixed structure's the section of admitting air with EGR exhaust gas line intercommunication, EGR mixed structure's the section of giving vent to anger is located in the intake pipe, and the section of giving vent to anger has the venthole, EGR mixed structure with the relative tip of lateral wall of intake pipe has and is used for keeping apart the intake pipe with EGR mixed structure's sealing member.

Preferably, among the foretell EGR hybrid system, the EGR mixed structure is for setting up the hybrid tube of the cylinder type in the intake pipe, the axis of hybrid tube with the axis of intake pipe is perpendicular, just hybrid tube one end with the sealed intercommunication of EGR exhaust gas line, the other end of hybrid tube is provided with the sealing member, the circumference of hybrid tube is provided with the venthole.

Preferably, in the EGR mixing system, the mixing pipe is connected to the EGR exhaust gas pipe in a sealing manner by a sealing flange, and the sealing flange is mounted on the outer side of the pipe wall of the intake pipe in a sealing manner.

Preferably, in the EGR mixing system, the sealing member is a cap welded to an end of the mixing tube for sealing the end of the mixing tube.

Preferably, in the EGR mixing system, the number of the outlet holes is three, and the outlet holes are uniformly arranged along the circumferential direction of the mixing pipe.

Preferably, in the EGR mixing system, the width of the outlet hole near the EGR exhaust pipe is larger than that of the end far away from the EGR exhaust pipe.

An engine comprising an EGR hybrid system, wherein the EGR hybrid system is any of the EGR hybrid systems described above.

An automobile comprises an engine, wherein the engine is the engine.

The utility model provides a pair of EGR hybrid system stretches into in the intake pipe with EGR mixed structure to keep apart between the pipe wall of EGR mixed structure and intake pipe sealed, prevent that EGR waste gas in the EGR mixed structure from blowing to the pipe wall of intake pipe through the tip, thereby alleviated the frozen problem of intake pipe wall.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an EGR mixing structure in an embodiment of the present invention;

fig. 2 is a front view of an EGR hybrid system in an embodiment of the present invention.

Detailed Description

The utility model discloses a EGR hybrid system to reduce the rate of freezing. Furthermore, the utility model also discloses an engine and car of having above-mentioned EGR hybrid system.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the present application further discloses an EGR hybrid system comprising: an intake pipe 5, an EGR exhaust line 7 and an EGR mixing structure 6. Specifically, the intake pipe 5 is a device for allowing fresh air to enter the EGR mixing system, and the shape and size thereof can be set according to different needs; the EGR exhaust gas pipe 7 is a pipe for feeding EGR exhaust gas into the EGR mixing system, and the EGR mixing structure 6 is used for mixing fresh air and EGR exhaust gas together, specifically, an air inlet end of the EGR mixing structure 6 is communicated with the EGR exhaust gas pipe 7, an air outlet section of the EGR mixing structure 6 is located in the air inlet pipe 5, the air outlet section of the EGR mixing structure 6 is provided with an air outlet hole, and an end portion of the EGR mixing structure 6 opposite to a side wall of the air inlet pipe 5 is provided with a sealing member 2 for isolating the air inlet pipe 5 from the EGR mixing structure 6. Stretch into intake pipe 5 with EGR mixed structure 6 in this application to keep apart between the pipe wall of EGR mixed structure 6 and intake pipe 5 sealed, prevent that the EGR waste gas in the EGR mixed structure 6 from blowing to the pipe wall of intake pipe 5 through the tip, thereby alleviated the frozen problem of intake pipe 5 wall.

In a specific embodiment, the EGR mixing structure 6 is a cylindrical mixing pipe 1 disposed in the intake pipe 5, an axis of the mixing pipe 1 is perpendicular to an axis of the intake pipe 5, one end of the mixing pipe 1 is in sealed communication with an EGR exhaust gas pipeline 7, the other end of the mixing pipe 1 is provided with a sealing member 2, and the mixing pipe 1 is circumferentially provided with an air outlet 4. Set up mixing tube 1 into the mixing tube of cylinder type in this application, simple structure. And the axis of mixing pipe 1 and the axis of intake pipe 5 are arranged perpendicularly to set up venthole 4 in circumference, so that EGR waste gas comes out the back from venthole 4, parallel with the fresh air of intake pipe 5, prevent EGR waste gas backward flow.

The mixing pipe 1 and the EGR exhaust gas pipeline 7 are connected in a sealing mode through the sealing flange 3, the sealing flange 3 is mounted on the outer side of the pipe wall of the air inlet pipe 5 in a sealing mode, and the mounting mode of the EGR exhaust gas pipeline can be set according to different requirements in practice and is within a protection range.

Sealing member 2 in this application adopts the blanking cover to seal the tip of hybrid tube 1 for the blanking cover that the welding is used for shutoff hybrid tube 1 tip at 1 tip of hybrid tube, prevents that EGR waste gas from blowing to the pipe wall of intake pipe 5 through the tip of hybrid tube 1 to the frozen problem of intake pipe 5 has been alleviated. The shape and material of the cap can be selected according to actual needs, as long as the end opening of the mixing tube 1 can be sealed.

The number of the air outlet holes 4 disclosed in the above embodiment is three, and is uniformly arranged in the circumferential direction of the mixing pipe 1. Specifically, the size of the air outlet 4 can be set according to actual needs, and on the premise of reducing the processing cost and reducing the resistance, the size of the air outlet 4 can be set to be larger, and those skilled in the art can understand that the size and the number of the air outlet 4 are within the protection range.

In a further embodiment, the width of the outlet hole 4 near the EGR exhaust pipe 7 is larger than that of the end far from the EGR exhaust pipe 7. With this arrangement, the resistance at the time of exhaust of the EGR exhaust gas can be further reduced.

In addition, the application also discloses an engine, including an EGR hybrid system, wherein the EGR hybrid system is the EGR hybrid system disclosed in the above embodiments, therefore, the engine with the EGR hybrid system also has all the above technical effects, and is not repeated herein.

In addition, the application also discloses an automobile, which comprises an engine, wherein the engine is the engine disclosed in the embodiment, so that the automobile with the engine also has all the technical effects, and the details are not repeated herein.

In addition, the application also discloses an automobile which comprises the battery box, and the battery box is the battery box disclosed in the above embodiment, so that the automobile with the battery box also has all the technical effects.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An EGR hybrid system, comprising:

an air inlet pipe (5) for fresh air to enter;

an EGR exhaust line (7) through which exhaust gas flows;

EGR mixed structure (6), the section of admitting air of EGR mixed structure (6) with EGR exhaust gas line (7) intercommunication, the section of giving vent to anger of EGR mixed structure (6) is located in intake pipe (5), and the section of giving vent to anger has venthole (4), EGR mixed structure (6) with the opposite end of the lateral wall of intake pipe (5) has and is used for keeping apart intake pipe (5) with sealing member (2) of EGR mixed structure (6).

2. The EGR mixing system according to claim 1, wherein the EGR mixing structure (6) is a cylindrical mixing pipe (1) arranged in the air inlet pipe (5), the axis of the mixing pipe (1) is perpendicular to the axis of the air inlet pipe (5), one end of the mixing pipe (1) is in sealed communication with the EGR exhaust pipeline (7), the other end of the mixing pipe (1) is provided with the sealing element (2), and the circumferential direction of the mixing pipe (1) is provided with the air outlet (4).

3. The EGR hybrid system according to claim 2, wherein the mixing pipe (1) and the EGR exhaust gas line (7) are sealingly connected by a sealing flange (3), the sealing flange (3) being sealingly mounted outside the pipe wall of the intake pipe (5).

4. The EGR mixing system according to claim 2, wherein the seal (2) is a plug welded at the end of the mixing tube (1) for plugging the end of the mixing tube.

5. The EGR mixing system according to claim 2, wherein the number of the gas outlet holes (4) is three and is uniformly arranged in a circumferential direction of the mixing pipe (1).

6. The EGR hybrid system according to claim 5, wherein the width of the gas outlet hole (4) near the EGR exhaust line (7) is larger than the end far from the EGR exhaust line (7).

7. An engine comprising an EGR hybrid system, characterized in that the EGR hybrid system is an EGR hybrid system according to any of claims 1-6.

8. An automobile comprising an engine, wherein the engine is the engine of claim 7.