CN214366327U - Tail pipe and tail pipe backpressure reducing device - Google Patents
Tail pipe and tail pipe backpressure reducing device Download PDFInfo
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- CN214366327U CN214366327U CN202022809591.0U CN202022809591U CN214366327U CN 214366327 U CN214366327 U CN 214366327U CN 202022809591 U CN202022809591 U CN 202022809591U CN 214366327 U CN214366327 U CN 214366327U
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- 239000000446 fuel Substances 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
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- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a tail pipe and tail pipe backpressure reducing device, tail pipe backpressure reducing device include first sleeve pipe, first conical duct and second conical duct. When the motor vehicle runs, air on the periphery of the exhaust pipe enters a gap between the first sleeve and the exhaust pipe through the air inlet end of the second conical pipe, the flow cross section is reduced, the flow speed of the air is accelerated, and finally the air is discharged through the first conical pipe. Because the velocity of flow of the gaseous flow of through first conical duct exhaust is very fast, can form a negative pressure at the play of gas end of blast pipe, this negative pressure can produce the effect of a suction to the play of gas end of blast pipe, for the gas flow in the blast pipe provides a power, reaches the purpose that reduces the blast pipe backpressure to reduce the fuel consumption rate of engine.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to tail pipe and tail pipe backpressure reducing device.
Background
The exhaust backpressure of the aftertreatment is the pressure at the inlet of the aftertreatment, or the resistance pressure of the exhaust gas flow. When exhaust back pressure rises, engine exhaust is not smooth, and fuel consumption of the engine is increased.
Therefore, how to reduce the exhaust back pressure to reduce the fuel consumption rate of the engine is a technical 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 tail pipe backpressure reducing device to reduce exhaust backpressure, reduce the fuel consumption rate of engine. The utility model also provides a tail pipe.
In order to achieve the above object, the utility model provides a following technical scheme:
a tailpipe back pressure reducing device comprising:
the first sleeve can be sleeved on the tail pipe and is in clearance fit with the tail pipe, and the gas outlet end of the first sleeve is at least flush with the gas outlet end of the tail pipe;
the air inlet end with the larger diameter of the first conical pipe is communicated with the air outlet end of the first sleeve, and the air outlet end with the smaller diameter of the first conical pipe is a free end;
the second conical pipe can be sleeved on the tail pipe, the large-diameter air inlet end of the second conical pipe is connected with the tail pipe through a connecting piece, and the small-diameter air outlet end of the second conical pipe is communicated with the air inlet end of the first sleeve.
Preferably, in the above tail pipe back pressure reducing device, a clearance between the first sleeve and the tail pipe is 5 to 10 mm.
Preferably, in the above-mentioned tail pipe backpressure-reducing device, the connecting piece is a support rod, one end of the support rod is connected with the tail pipe, the other end of the support rod is connected with the inner wall of the second tapered pipe, the number of the support rods is multiple, and the support rods are uniformly arranged along the inner wall of the second tapered pipe.
Preferably, in the above back pressure reducing device for the tail pipe, the connecting member is a hole plate, the hole plate can be sleeved on the tail pipe, an air inlet is formed in the hole plate, and the periphery of the hole plate is connected with the inner wall of the second tapered pipe.
Preferably, in the tail pipe backpressure reducing device, a gas supply assembly is further included for supplying high-pressure gas into the second conical pipe,
the gas supply assembly includes:
the gas supply pipe can be communicated with a high-pressure gas cylinder, and an electromagnetic valve is arranged on the gas supply pipe;
the second sleeve pipe can be established on the tail pipe, the sheathed tube one end of second with the inlet end intercommunication of second taper pipe, the sheathed tube other end of second is provided with the shrouding, the shrouding cover is established on the tail pipe, the second sleeve pipe with the air supply pipe intercommunication.
Preferably, in the tail pipe back pressure reducing apparatus, the first sleeve, the first tapered pipe, and the second tapered pipe are integrally formed.
Preferably, in the above tail pipe backpressure reducing device, the taper of the second conical pipe is 45-60 °, and the diameter of the air inlet end of the second conical pipe is 10-20mm larger than that of the tail pipe.
A tail pipe comprises a tail pipe body and a tail pipe back pressure reducing device, wherein the tail pipe back pressure reducing device is the tail pipe back pressure reducing device in any one scheme.
According to the above technical scheme, the utility model provides a tail pipe backpressure device that falls, including first sleeve pipe, first conical duct and second conical duct. When the motor vehicle runs, air on the periphery of the exhaust pipe enters a gap between the first sleeve and the exhaust pipe through the air inlet end of the second conical pipe, the flow cross section is reduced, the flow speed of the air is accelerated, and finally the air is discharged through the first conical pipe. Because the velocity of flow of the gaseous flow of through first conical duct exhaust is very fast, can form a negative pressure at the play of gas end of blast pipe, this negative pressure can produce the effect of a suction to the play of gas end of blast pipe, for the gas flow in the blast pipe provides a power, reaches the purpose that reduces the blast pipe backpressure to reduce the fuel consumption rate of engine.
The scheme also discloses a tail pipe, which comprises a tail pipe body and a tail pipe back pressure reducing device, wherein the tail pipe back pressure reducing device is the tail pipe back pressure reducing device recorded in any one scheme. Because the tail pipe backpressure reducing device has the technical effects, the tail pipe with the tail pipe backpressure reducing device also has the same technical effects, and the details are not repeated.
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 view of a tail pipe backpressure reducing device according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a tail pipe according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of a tail pipe backpressure reducing device according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a tail pipe according to a second embodiment of the present invention.
Wherein,
1. the device comprises a first sleeve pipe, a second sleeve pipe, a first conical pipe, a second conical pipe, a gas supply assembly, a gas supply pipe, a second sleeve pipe, a tail pipe and a gas supply assembly, wherein the first sleeve pipe 2, the first conical pipe 3, the second conical pipe 4, the gas supply assembly 41, the gas supply pipe 42, the second sleeve pipe 5 and the tail pipe.
Detailed Description
The utility model discloses a tail pipe backpressure device that falls to reduce exhaust backpressure, reduce the fuel consumption rate of engine. The utility model also discloses a tail pipe.
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.
Please refer to fig. 1-4.
The utility model discloses a tail pipe backpressure device that falls, including first sleeve pipe 1, first conical duct 2 and second conical duct 3.
The second taper pipe 3, the first sleeve 1 and the first taper pipe 2 are coaxially arranged along the flowing direction of gas, the first sleeve 1 and the second taper pipe 3 are sleeved on the tail pipe 5, and the first taper pipe 2 is positioned outside the tail pipe 5.
As shown in fig. 1-4, the first sleeve 1 can be sleeved on the tail pipe 5 and the first sleeve 1 is in clearance fit with the tail pipe 5. The air inlet end of the first sleeve 1 is communicated with the second conical pipe 3, and the air outlet end of the first sleeve 1 is at least flush with the air outlet end of the tail pipe 5.
The inlet end of the first conical pipe 2 is communicated with the outlet end of the first sleeve 1, and the outlet end of the first conical pipe 2 is a free end. As shown in fig. 1 and 3, the diameter of the inlet end of the first tapered tube 2 is larger than the diameter of the outlet end of the first tapered tube 2. The diameter of the air outlet end of the first conical pipe 2 is smaller than that of the exhaust pipe.
The air inlet end of the second conical pipe 3 is a free end, and the air outlet end of the second conical pipe 3 is communicated with the air inlet end of the first sleeve 1.
When the motor vehicle runs, air on the periphery of the exhaust pipe enters a gap between the first sleeve 1 and the exhaust pipe through the air inlet end of the second conical pipe 3, the gap between the first sleeve 1 and the exhaust pipe compresses the entering air, the flow rate of the air is accelerated, and finally the air is discharged through the first conical pipe 2. Because the velocity of flow of the gaseous flow of through first conical duct 2 exhaust is very fast, can form a negative pressure at the play of gas end of blast pipe, this negative pressure can produce the effect of a suction to the play of gas end of blast pipe, for the gas flow in the blast pipe provides a power, reaches the purpose that reduces the blast pipe backpressure to reduce the fuel consumption rate of engine.
In the scheme, the second conical pipe 3 is arranged at the air inlet end of the first sleeve 1, the diameter of the air inlet end of the second conical pipe 3 is larger than that of the air outlet end of the second conical pipe 3, and the air inflow of the second conical pipe 3 is increased. The larger the amount of gas supplied between the first sleeve 1 and the exhaust pipe through the second taper pipe 3 is, the larger the compression amount of the gas by the gap between the first sleeve 1 and the exhaust pipe is, the faster the flow speed of the gas between the first sleeve 1 and the exhaust pipe is, the smaller the pressure is, and the more remarkable the effect of reducing the back pressure of the exhaust pipe is.
First conical duct 2 can play the effect of assembling to the gas between first sleeve pipe 1 of discharging and the blast pipe, reduces gaseous energy loss for gas can have higher velocity of motion in first conical duct 2, maintains the pressure differential of gas after the space discharge between first sleeve pipe 1 and the blast pipe, reduces the pressure of blast pipe entrance, reaches the purpose that reduces the backpressure of blast pipe.
The smaller the clearance between the first sleeve 1 and the exhaust pipe, the better the effect of reducing the back pressure of the exhaust pipe. Preferably, the clearance between the first sleeve 1 and the tail pipe 5 in the scheme is 5-10 mm.
The second conical pipe 3 of the tail pipe backpressure reducing device is connected with the tail pipe 5 through a connecting piece, so that the working stability of the tail pipe backpressure reducing device is ensured.
In one embodiment of the present invention, the connecting member is a support rod, one end of the support rod is connected to the tail pipe 5, and the other end of the support rod is connected to the inner wall of the second conical pipe 3. Preferably, the support rods are arranged in the radial direction of the tail pipe 5. The number of the supporting rods is a plurality of and is uniformly arranged along the inner wall of the second conical pipe 3.
In another embodiment of the present invention, the connecting member is a hole plate (not shown), the hole plate is sleeved on the tail pipe 5, and the air around the tail pipe 5 enters the second conical pipe 3 through an air inlet hole on the hole plate. The pore plate is provided with a sleeving hole matched with the tail pipe 5, the pore plate is sleeved on the tail pipe 5 through the sleeving hole, and the periphery of the pore plate is connected with the inner wall of the second conical pipe 3.
The connecting means of the connecting member is various, not limited to the above two, but may be other connecting members as will occur to those skilled in the art.
Because the air contains a lot of dust, after the tail pipe backpressure reducing device is used for a period of time, the gap between the first sleeve 1 and the tail pipe 5 becomes smaller and smaller, even is blocked, at the moment, the tail pipe backpressure reducing device cannot effectively play a backpressure reducing role, and at the moment, the tail pipe backpressure reducing device needs to be cleaned.
In order to solve the above problem, the exhaust tail pipe backpressure reducing device disclosed by the present scheme further comprises an air supply assembly 4. The gas supply assembly 4 is used to supply high pressure gas into the second conical tube 3.
In a particular embodiment of the present solution, the gas supply assembly 4 comprises a gas supply pipe 41 and a second casing 42.
The air supply pipe 41 can communicate with a high pressure gas cylinder, and the air supply pipe 41 is provided with an electromagnetic valve.
The second sleeve 42 is sleeved on the tail pipe 5, one end of the second sleeve 42 is communicated with the air inlet end of the second conical pipe 3, the other end of the second sleeve 42 is provided with a sealing plate, the sealing plate is sleeved on the tail pipe 5, and the second sleeve 42 is communicated with the air supply pipe 41. Here, it should be noted that one end and the other end of the second sleeve 42 refer to one end and the other end in the axial direction of the second sleeve 42. The diameter of the second sleeve 42 is equal to the diameter of the larger sized end of the second conical tube 3.
As shown in fig. 3 and 4, the second sleeve 42, the second tapered tube 3, the first sleeve 1 and the first tapered tube 2 are coaxially and linearly arranged.
The solenoid valve on the gas supply pipe 41 is opened, and the clean gas in the high-pressure gas cylinder is supplied into the second sleeve 42 through the gas supply pipe 41 and then enters the second conical pipe 3. The gas entering the second conical pipe 3 has certain pressure and speed, and is further pressurized and accelerated after passing through the gap between the first sleeve 1 and the exhaust pipe, so that the exhaust back pressure of the exhaust pipe is further reduced.
In order to reduce the difficulty in processing the tail pipe backpressure reduction device, it is preferable that the first sleeve 1, the first conical pipe 2 and the second conical pipe 3 are integrally formed.
Preferably, the taper of the second conical pipe 3 is 45-60 degrees, and the diameter of the air inlet end of the second conical pipe 3 is 10-20mm larger than that of the tail pipe 5.
The scheme also discloses a tail pipe, which comprises a tail pipe body and a tail pipe back pressure reducing device, wherein the tail pipe back pressure reducing device is the tail pipe back pressure reducing device recorded in any one scheme.
Since the tail pipe backpressure reducing device has the technical effects, the tail pipe 5 with the tail pipe backpressure reducing device also has the same technical effects, and the details are not repeated.
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 (8)
1. A tail pipe backpressure reducing device, comprising:
the first sleeve (1) can be sleeved on the tail pipe (5) and is in clearance fit with the tail pipe (5), and the air outlet end of the first sleeve (1) is at least flush with the air outlet end of the tail pipe (5);
the gas inlet end with the larger diameter of the first conical pipe (2) is communicated with the gas outlet end of the first sleeve (1), and the gas outlet end with the smaller diameter of the first conical pipe (2) is a free end;
second conical pipe (3), can the cover establish on tail pipe (5), the great inlet end of diameter of second conical pipe (3) pass through the connecting piece with tail pipe (5) are connected, the less end of giving vent to anger of diameter of second conical pipe (3) with the inlet end intercommunication of first sleeve pipe (1).
2. A tail pipe backpressure reducing device according to claim 1, characterized in that the clearance between the first sleeve (1) and the tail pipe (5) is 5-10 mm.
3. The tail pipe backpressure reducing device according to claim 1, wherein the connecting piece is a support rod, one end of the support rod is connected with the tail pipe (5), the other end of the support rod is connected with the inner wall of the second conical pipe (3), the number of the support rods is multiple, and the support rods are uniformly arranged along the inner wall of the second conical pipe (3).
4. The tail pipe backpressure reducing device according to claim 1, wherein the connecting piece is a hole plate, the hole plate can be sleeved on the tail pipe (5), an air inlet hole is formed in the hole plate, and the periphery of the hole plate is connected with the inner wall of the second conical pipe (3).
5. The tail pipe backpressure reducing device according to claim 3 or 4, further comprising a gas supply assembly (4) for supplying high-pressure gas into the second conical pipe (3),
the gas supply assembly (4) comprises:
the gas supply pipe (41) can be communicated with a high-pressure gas cylinder, and an electromagnetic valve is arranged on the gas supply pipe (41);
second sleeve pipe (42), can the cover establish on tail pipe (5), the one end of second sleeve pipe (42) with the inlet end intercommunication of second taper pipe (3), the other end of second sleeve pipe (42) is provided with the shrouding, the shrouding cover is established on tail pipe (5), second sleeve pipe (42) with air supply pipe (41) intercommunication.
6. The tailpipe backpressure reducing device according to claim 1, characterized in that the first sleeve (1), the first conical pipe (2) and the second conical pipe (3) are integrally formed.
7. The tail pipe backpressure reducing device according to claim 1, characterized in that the taper of the second conical pipe (3) is 45-60 degrees, and the diameter of the air inlet end of the second conical pipe (3) is 10-20mm larger than that of the tail pipe (5).
8. A tail pipe comprising a tail pipe body and a tail pipe backpressure reducing device, the tail pipe backpressure reducing device being as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809591.0U CN214366327U (en) | 2020-11-27 | 2020-11-27 | Tail pipe and tail pipe backpressure reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809591.0U CN214366327U (en) | 2020-11-27 | 2020-11-27 | Tail pipe and tail pipe backpressure reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214366327U true CN214366327U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022809591.0U Active CN214366327U (en) | 2020-11-27 | 2020-11-27 | Tail pipe and tail pipe backpressure reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214366327U (en) |
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2020
- 2020-11-27 CN CN202022809591.0U patent/CN214366327U/en active Active
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