CN217841802U

CN217841802U - Special vehicle post-processing system

Info

Publication number: CN217841802U
Application number: CN202222058086.6U
Authority: CN
Inventors: 胡晓瑞; 殷均君; 张勇; 柳斌
Original assignee: Dongfeng Cummins Emission Solutions Co Ltd
Current assignee: Dongfeng Cummins Emission Solutions Co Ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2022-11-18
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses a special vehicle post-processing system, which relates to the technical field of vehicle tail gas processing and solves the problem that the exhaust back pressure of an exhaust processing system assembly is abnormally increased because the design of 'special-shaped concave reducing' can be made for avoiding relevant parts of a chassis when the exhaust pipeline of the existing exhaust processing system assembly is designed and arranged; a special vehicle aftertreatment system comprises a straight-tube type exhaust funnel main body, wherein the straight-tube type exhaust funnel main body is integrally formed by three sections of bobbins, the diameters of the three sections of bobbins are sequentially reduced from front to back, an exhaust pipe is welded in the center of a rear-end bobbin, and the exhaust pipe is communicated with a rearmost-end section of bobbin; an annular air guide cover is welded on one section of the bobbin at the front end, and an air inlet pipe is welded on the circumferential outer wall of the annular air guide cover; the utility model discloses make exhaust pipe can accomplish the blast pipe distance that is connected with the engine gas outlet when avoiding other parts when the design overall arrangement shortest, practice thrift the cost.

Description

Special vehicle post-processing system

Technical Field

The utility model relates to a car aftertreatment system technical field specifically is a special-purpose vehicle aftertreatment system.

Background

The general length of the tail pipe that commercial vehicle type used exceeds 3 meters to can increase the spark arrester at the end of tail pipe in order to avoid the vehicle fire risk when refueling, when commercial vehicle is in the horse power section motorcycle type of developing, the requirement to chassis space is comparatively compact, when the exhaust pipe is in the design overall arrangement, can do the design of "dysmorphism sunken reducing" for dodging the relevant part on chassis, this kind of design can lead to exhaust treatment system assembly to bear the exhaust back pressure that abnormally rises, thereby cause the systemic fault of "high back pressure", and then lead to the vehicle to normally go, the speed reduction appears, fall to turn round, the problem such as combination appearance report trouble.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special-purpose vehicle aftertreatment system to the exhaust treatment system assembly exhaust backpressure of the present special-purpose vehicle that provides in solving above-mentioned background art is higher, has the unable normal traveling of vehicle, and the deceleration, fall to turn round, make up the appearance report trouble scheduling problem.

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

a special vehicle aftertreatment system comprises a straight-tube type exhaust funnel main body, wherein the straight-tube type exhaust funnel main body is integrally formed by three sections of bobbins, the diameters of the three sections of bobbins are sequentially reduced from front to back, an exhaust pipe is welded in the center of a rear-end bobbin, and the exhaust pipe is communicated with a rearmost-end section of bobbin; the front end section of the bobbin is welded with an annular gas guide cover, and the circumferential outer wall of the annular gas guide cover is welded with a gas inlet pipe.

Preferably, the air inlet pipe is arranged obliquely, and the angular position of the air inlet pipe relative to the vertical plane is 80 degrees and the angular position of the air inlet pipe relative to the horizontal plane is 10 degrees.

Preferably, a spark arrester is installed on the circumferential outer wall of the exhaust pipe in a penetrating manner.

Preferably, the direction of the exhaust pipe nozzle faces the left side of the cab, and the angular position angle of the exhaust pipe and the horizontal plane is 0 degrees.

Preferably, the inlet of the air inlet pipe faces the back of the cab, and the angle between the air inlet pipe and the horizontal plane is 10 degrees.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the pipe orifice of the air inlet pipe is changed into a side-entering type, the direction of the pipe orifice is designed to face the side of the air outlet of the engine, so that the exhaust tail pipe of the chassis can have a reasonable layout avoiding space, and the exhaust pipe does not need to be made into a design of 'special-shaped concave reducing', thereby effectively reducing the pressure value of exhaust back pressure;

2. the utility model discloses well blast pipe direct collocation spark arrester, spark when helping reducing tail gas discharge, reduce the fire risk when the vehicle refuels, and spark arrester directly runs through to install inside the blast pipe, the part of blast pipe has been reduced, thereby accomplish that the blast pipe length is the shortest, the pressure value of exhaust back pressure has been reduced effectively, adopt this overall arrangement to make the chassis design of special-purpose vehicle more nimble, the pipeline no longer need dodge other parts on chassis, the degree of difficulty of special-purpose vehicle to the exhaust pipe special design has been reduced, the degree of difficulty of the special manufacturing process of pipeline has been reduced, the holistic exhaust back pressure of engine has been reduced, make the oil consumption reduce 1.5%;

3. the utility model discloses the import position of well intake pipe is towards the back of driver's cabin, and the angular position degree of intake pipe and horizontal plane is 10, makes the blast pipe distance that the blast pipe that accomplishes to be connected with the engine gas outlet when avoiding other parts when the exhaust pipe is in design overall arrangement shortest, practices thrift the cost.

Drawings

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

FIG. 2 is a front view of the present invention;

FIG. 3 is an overall rear view of the present invention;

in the figure: 1. a straight cylinder type exhaust cylinder main body; 101. an annular air guide hood; 2. an air inlet pipe; 3. an exhaust pipe; 301. a spark arrester.

Detailed Description

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.

Referring to fig. 1 to fig. 3, the present invention provides an embodiment: a special vehicle aftertreatment system comprises a straight cylinder type exhaust funnel main body 1, wherein the whole straight cylinder type exhaust funnel main body 1 is jointly composed of three sections of bobbins, the diameters of the three sections of bobbins are sequentially decreased from front to back, an exhaust pipe 3 is welded at the center of a rear end bobbin, and the exhaust pipe 3 is communicated with a rearmost section of bobbin; an annular air guide cover 101 is welded on one section of the front end bobbin, and an air inlet pipe 2 is welded on the circumferential outer wall of the annular air guide cover 101.

Furthermore, the air inlet pipe 2 is obliquely arranged, the angle position between the air inlet pipe 2 and the vertical surface is 80 degrees, the angle position between the air inlet pipe 2 and the horizontal surface is 10 degrees, the pipe orifice of the air inlet pipe 2 is changed into a side-inlet type, the direction of the pipe orifice is designed to face the air outlet side of the engine, so that the exhaust tail pipe of the chassis can have a reasonable layout avoiding space, the exhaust pipe does not need to be designed into a special-shaped concave reducing structure, and the pressure value of exhaust back pressure is effectively reduced.

Further, run through on the circumference outer wall of blast pipe 3 and install a spark arrester 301, the spark arrester 301 of directly arranging of blast pipe 3 helps reducing the spark when tail gas discharges, reduces the fire risk when the vehicle refuels.

Further, 3 orificial directions of blast pipe are towards the driver's cabin left side, and the angular position degree of blast pipe 3 and horizontal plane is 0, and spark arrester 301 directly runs through and installs inside blast pipe 3, the part of blast pipe 3 has been reduced, thereby accomplish 3 shortest lengths of blast pipe, the pressure value of exhaust back pressure has been reduced effectively, adopt this overall arrangement to make the chassis design of special-purpose vehicle more nimble, the pipeline no longer need dodge other parts on chassis, the special-purpose vehicle has reduced the degree of difficulty to the exhaust pipe special design, the degree of difficulty of pipeline special manufacturing process has been reduced, the holistic exhaust back pressure of engine has been reduced, make the oil consumption reduce 1.5%.

Furthermore, the inlet position of intake pipe 2 is towards the back of driver's cabin (slope towards ground), and intake pipe 2 is 10 with the angular position degree of horizontal plane, makes the blast pipe 3 that accomplish to be connected with the engine gas outlet when the exhaust pipe can avoid other parts when the design overall arrangement apart from the shortest distance, practices thrift the cost.

The working principle is as follows: the pipe orifice of the air inlet pipe 2 is changed into a side-entering form, the direction of the pipe orifice is designed to face the air outlet side of the engine, the exhaust tail pipe of the chassis can have a reasonable layout avoiding space, the exhaust pipe does not need to be designed into a special-shaped concave reducing shape, the pressure value of exhaust backpressure is effectively reduced, the exhaust pipe 3 is directly matched with the spark arrester 301, the emission of tail gas is favorably reduced, the spark arrester 301 is directly installed inside the exhaust pipe 3 in a penetrating mode, the parts of the exhaust pipe 3 are reduced, the length of the exhaust pipe 3 is shortest, the pressure value of the exhaust backpressure is effectively reduced, the chassis design of the special vehicle is more flexible by adopting the layout, the pipeline does not need to avoid other parts of the chassis, the difficulty of the special vehicle in specially designing the exhaust pipeline is reduced, the difficulty of special manufacturing processes of the pipeline is reduced, the overall exhaust backpressure of the engine is reduced, the oil consumption is reduced by 1.5%, the inlet position of the air inlet pipe 2 faces the back side of a cab (obliquely facing the ground direction), the angle position of the air inlet pipe 2 and the horizontal plane is 10 degrees, the exhaust pipe 3 distances between the air outlet of the engine can be shortest while avoiding other parts when the exhaust pipeline is designed, and the cost is saved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A special vehicle post-processing system is characterized in that: the straight-tube type exhaust funnel comprises a straight-tube type exhaust funnel main body (1), wherein the straight-tube type exhaust funnel main body (1) is integrally formed by three sections of bobbins, the diameters of the three sections of bobbins are sequentially reduced from front to back, an exhaust pipe (3) is welded in the center of a rear-end bobbin, and the exhaust pipe (3) is communicated with a rearmost section of bobbin; the front end section of the bobbin is welded with an annular gas guide cover (101), and the circumferential outer wall of the annular gas guide cover (101) is welded with an air inlet pipe (2).

2. The special-purpose vehicle aftertreatment system according to claim 1, wherein: the air inlet pipe (2) is obliquely arranged, and the angle between the air inlet pipe (2) and a vertical plane is 80 degrees.

3. The special-purpose vehicle aftertreatment system according to claim 1, wherein: and a spark arrester (301) penetrates through the circumferential outer wall of the exhaust pipe (3).

4. The special-purpose vehicle aftertreatment system according to claim 1, wherein: the direction of the pipe opening of the exhaust pipe (3) faces the left side of the cab, and the angle between the exhaust pipe (3) and the horizontal plane is 0 degree.

5. The special-purpose vehicle aftertreatment system according to claim 1, wherein: the inlet position of the air inlet pipe (2) faces the back of the cab, and the angle between the air inlet pipe (2) and the horizontal plane is 10 degrees.