CN218479857U - Pulse turbine system and automobile with same - Google Patents
Pulse turbine system and automobile with same Download PDFInfo
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- CN218479857U CN218479857U CN202121977854.7U CN202121977854U CN218479857U CN 218479857 U CN218479857 U CN 218479857U CN 202121977854 U CN202121977854 U CN 202121977854U CN 218479857 U CN218479857 U CN 218479857U
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- 238000010992 reflux Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a pulse turbine system and an automobile provided with the same, wherein the pulse turbine system comprises a first return pipe and a second return pipe; one end of the first return pipe is communicated with the turbine air outlet pipe, the other end of the first return pipe is communicated with the first pulse exhaust pipe, a first valve is arranged between the first return pipe and the first pulse exhaust pipe, and the first valve is opened only when the pressure in the first pulse exhaust pipe is smaller than the pressure in the first return pipe; one end of the second return pipe is communicated with the turbine air outlet pipe, the other end of the second return pipe is communicated with the second pulse exhaust pipe, a second valve is arranged between the second return pipe and the second pulse exhaust pipe, and the second valve is opened only when the pressure in the second pulse exhaust pipe is smaller than the pressure in the second return pipe. Due to the adoption of the technical scheme, compared with the prior art, the invention eliminates the influence of exhaust negative pressure on the pressure before the vortex, increases the gas energy before the vortex, reduces the pressure after the vortex of the turbocharger and reduces the pumping loss.
Description
Technical Field
The utility model relates to an automobile power equipment field, concretely relates to pulse turbine system and be equipped with car of this system.
Background
With the continuous improvement of the driving requirements of people on automobiles, the oil consumption of an engine is required to be lower, the power is stronger, and the responsiveness is faster. The turbocharger technology is an important technology application of the engine technology, the energy of exhaust gas is utilized to drive a turbine to do work, and the turbine rotates at high speed to drive a coaxial compressor impeller to work, so that the air inlet pressure is improved, and the air inlet amount is increased. However, in the past, the exhaust pipe of the engine mostly adopts a pressure-stabilizing exhaust pipe, the exhaust of each cylinder is directly communicated, and the exhaust gas is discharged into the turbocharger to do work through the pressure-stabilizing exhaust pipe. Researches show that the exhaust pressure of each cylinder of the engine is gradually attenuated in a waveform in the exhaust process of each cylinder and is lower than the atmospheric pressure in a certain range interval. Therefore, all the cylinders are communicated with the exhaust main pipe, and the exhaust pulse pressures of all the cylinders are necessarily balanced, so that energy is wasted.
In view of the above disadvantages, a pulse exhaust pipe is used. Fig. 1 shows a prior art four-cylinder pulse turbine system that separates the cylinders' exhausts that are present in cancellation according to the engine exhaust sequence, thereby greatly improving the exhaust pulse energy utilization. However, such pulse turbine systems still have disadvantages: as shown in fig. 2 and 3, the pulse exhaust pipe still has a negative pressure region during pressure fluctuation, which adversely affects the pressure before the vortex for driving the turbocharger to operate.
Disclosure of Invention
For the pulse blast pipe of solving current pulse turbine system among the background art still has the negative pressure region when the pressure oscillation, the problem that the pressure led to the fact adverse effect before the whirlpool that promotes turbocharger work, the utility model provides a pulse turbine system, concrete technical scheme is as follows.
A pulse turbine system comprises a first pulse exhaust pipe, a second pulse exhaust pipe and a turbocharger, wherein the turbocharger comprises a turbine air inlet and a turbine air outlet, and exhaust ends of the first pulse exhaust pipe and the second pulse exhaust pipe are communicated with the turbine air inlet; the device also comprises a first return pipe and a second return pipe; one end of the first return pipe is communicated with the turbine air outlet pipe, the other end of the first return pipe is communicated with the first pulse exhaust pipe, a first valve is arranged between the first return pipe and the first pulse exhaust pipe, and the first valve is opened only when the pressure in the first pulse exhaust pipe is smaller than the pressure in the first return pipe; one end of the second return pipe is communicated with the turbine air outlet pipe, the other end of the second return pipe is communicated with the second pulse exhaust pipe, a second valve is arranged between the second return pipe and the second pulse exhaust pipe, and the second valve is opened only when the pressure in the second pulse exhaust pipe is smaller than the pressure in the second return pipe.
Therefore, when the exhaust pressure of each cylinder of the engine is in a negative pressure area due to inertia, the first valve/the second valve is opened, and partial positive pressure gas is introduced into the first pulse exhaust pipe/the second pulse exhaust pipe from the turbine exhaust pipe through the first return pipe/the second return pipe, so that the influence of the exhaust negative pressure on the vortex front pressure is eliminated, the vortex front gas energy is increased, the vortex rear pressure of the turbocharger is reduced, and the pumping loss is reduced. The utility model discloses simple structure, arrange the convenience, not only reduced exhaust backpressure, increased the turbine ability of doing work moreover, promoted energy utilization, reduced the oil consumption.
Preferably, the inner wall of the turbine air outlet pipe is provided with an annular communicating groove, and the outer wall of the turbine air outlet pipe is provided with a first through hole and a second through hole which are communicated with the communicating groove; one end of the first backflow pipe is communicated with the first through hole, and one end of the second backflow pipe is communicated with the second through hole. Through setting up annular intercommunication groove, can guarantee that the backflow process is to turbine circumference even getting gas.
Preferably, the first through hole comprises two first air outlets arranged oppositely, the second through hole comprises two second air outlets arranged oppositely, and the first air outlets are perpendicular to the second air outlets;
the first return pipe comprises two first return branch pipes and a first return header pipe; one end of each of the two first return branch pipes is respectively communicated with the two first air outlets, the other end of each of the two first return branch pipes is communicated with one end of the first return main pipe, and the other end of the first return main pipe is communicated with the first pulse exhaust pipe;
the second return pipe comprises two second return branch pipes and a second return header pipe; and one ends of the two second reflux branch pipes are respectively communicated with the two second air outlets, the other ends of the two second reflux branch pipes are communicated with one end of a second reflux main pipe, and the other end of the second reflux main pipe is communicated with the second pulse exhaust pipe.
Therefore, the first air outlet and the second air outlet which are uniformly distributed can ensure that the backflow process can uniformly take air from the circumferential direction of the turbine.
Preferably, the first return pipe is provided with a bending part at the joint with the first through hole and/or the second return pipe is provided with a bending part at the joint with the second through hole; the bent part and the turbine air outlet pipe are obliquely arranged, the inclination direction is upward inclination, and the inclination angle range is 15-75 degrees. Thus, drainage can be improved.
Preferably, the device also comprises an engine cylinder, an engine air inlet pipe, an impeller air inlet pipe and an impeller air outlet; one end of the engine air inlet pipe is communicated with the impeller air outlet, and the other end of the engine air inlet pipe is communicated with the air inlet end of the engine air cylinder; and the first pulse exhaust pipe and the second pulse exhaust pipe are communicated with the exhaust end of the engine cylinder.
Preferably, the engine cylinders include a first cylinder, a second cylinder, a third cylinder, and a fourth cylinder; the first pulse exhaust pipe is communicated with the exhaust ends of the second cylinder and the third cylinder respectively; and the second pulse exhaust pipe is respectively communicated with the exhaust ends of the first cylinder and the fourth cylinder.
Preferably, the engine cylinders include a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder, and a sixth cylinder; the first pulse exhaust pipe is communicated with the exhaust ends of the fourth cylinder, the fifth cylinder and the sixth cylinder respectively; and the second pulse exhaust pipe is respectively communicated with the exhaust ends of the first cylinder, the second cylinder and the third cylinder.
Preferably, the first and second valves are both one-way valves.
Preferably, the first valve and the second valve are both mechanical check valves or electrical check valves.
Based on the same utility model discloses think, the utility model discloses still provide a car, install above-mentioned pulse turbine system on the car.
Since the technical scheme above is adopted, compare with prior art, the utility model discloses when each jar exhaust pressure of engine because inertia when appearing in the negative pressure region, first valve/second valve is opened, through first return line/second return line from the turbine outlet duct with partial malleation gas introduce first pulse blast pipe/second pulse blast pipe, eliminated the influence of exhaust negative pressure to vortex front pressure, increased vortex front gas energy, reduced turbo charger's vortex back pressure, the pump gas loss reduces. The utility model discloses simple structure, arrange the convenience, not only reduced exhaust backpressure, increased the turbine ability of doing work moreover, promoted energy utilization, reduced the oil consumption. Furthermore, the utility model discloses still through setting up annular intercommunication groove to and evenly distributed's first gas outlet and second gas outlet, guaranteed that the backward flow process evenly gets gas to turbine circumference. Through setting up the kink, further improve the drainage effect.
Drawings
FIG. 1 is a schematic structural diagram of a conventional four-cylinder pulse turbine system;
fig. 2 and 3 are schematic diagrams of waveforms of pressures in a pulse exhaust pipe when a conventional four-cylinder pulse turbine system works (1, 2, 3 and 4 respectively represent four cylinders);
fig. 4 is a schematic structural diagram of a pulse turbine system according to the present invention;
FIG. 5 is an enlarged detail view of the connection between the communicating channel and the first and second return pipes in the pulse turbine system of the present invention;
fig. 6 is a schematic structural view of a turbine air outlet pipe in the pulse turbine system of the present invention;
fig. 7 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 6.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in FIGS. 4-7, a pulse turbine system comprises an engine cylinder, an engine intake pipe 2, a pulse exhaust pipe,
A pulse turbine system comprising an engine cylinder and a turbocharger 2; wherein the engine cylinders comprise a first cylinder 11, a second cylinder 12, a third cylinder 13 and a fourth cylinder 14; the turbocharger 2 includes a turbine air inlet 21, a turbine air outlet 22, a wheel air inlet 23, and a wheel air outlet 24.
The inlet end of the engine cylinder communicates with the impeller outlet 24 via an engine inlet duct 15. The exhaust end of the engine cylinder communicates with the turbine intake port 21 through a first pulse exhaust pipe 3 and a second pulse exhaust pipe 4. Specifically, one end of the first pulse exhaust pipe 3 is communicated with the turbine inlet 21, and the other end is divided into two branches and communicated with the second cylinder 12 and the third cylinder 13 respectively; one end of the second pulse exhaust pipe 4 is communicated with the turbine inlet 21, and the other end is divided into two branches and communicated with the first cylinder 11 and the fourth cylinder 14 respectively.
As shown in fig. 4, an annular communicating groove 25 is formed in the inner wall of the turbine outlet pipe 22, and a first through hole and a second through hole communicated with the communicating groove 25 are formed in the outer wall of the turbine outlet pipe 22. The first through hole comprises two first air outlets 26 which are oppositely arranged, the second through hole comprises two second air outlets 27 which are oppositely arranged, and the first air outlets 26 are perpendicular to the second air outlets 27.
As shown in fig. 4-7, the first air outlet 26 is communicated with the first pulse exhaust pipe 3 through a first return pipe. Specifically, the first return pipe includes two first return branch pipes 51 and one first return header pipe 52. One end of each of the two first return branch pipes 51 is communicated with the two first air outlets 26, the other end of each of the two first return branch pipes is communicated with one end of the first return header pipe 52, and the other end of the first return header pipe 52 is communicated with the first pulse exhaust pipe 3 through the first valve 61.
The second air outlet 27 is communicated with the second pulse exhaust pipe 4 through a second return pipe. In particular, the second return line comprises two second return branch lines 53 and one second return header line 54. One end of each of the two second return branch pipes 53 is communicated with the two second air outlets 27, the other end is communicated with one end of the second return header pipe 54, and the other end of the second return header pipe 54 is communicated with the second pulse exhaust pipe 4 through a second valve 62.
The first valve 61 and the second valve 62 are both one-way valves, and the first valve 61 is opened only when the pressure in the first pulse exhaust pipe 3 is lower than the pressure in the first return pipe, and the second valve 62 is opened only when the pressure in the second pulse exhaust pipe 4 is lower than the pressure in the second return pipe. The first valve 61 and the second valve 62 are conventional, and may be, for example, mechanical valves or electrically controlled valves. The mechanical valve is formed by a spring structure, and is opened when the thrust formed by the pressure difference is greater than the threshold value of the spring. The electrically controlled valve can be opened/closed by arranging two pressure sensors in the first pulse exhaust pipe 3 and the first return pipe and comparing the pressures measured by the two pressure sensors.
As shown in fig. 4, the first return pipe and the second return pipe are provided with a bending portion 7 at the connection position of the first return pipe and the first through hole and at the connection position of the second return pipe and the second through hole. Specifically, the junctions of the two first return branch pipes 51 and the two first air outlets 26, and the junctions of the two second return branch pipes 53 and the two second air outlets 27 are provided with the bent portions 7. The bent part 7 and the turbine outlet pipe 22 are obliquely arranged, the inclination direction is upward inclination, and the inclination angle alpha is 45 degrees.
The present embodiment is only an example of a four-cylinder engine, but the present invention is not limited to a four-cylinder engine, and engines with other numbers of cylinders are also applicable, for example, a six-cylinder or eight-cylinder engine.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A pulse turbine system comprises a first pulse exhaust pipe, a second pulse exhaust pipe and a turbocharger, wherein the turbocharger comprises a turbine air inlet and a turbine air outlet pipe, and the exhaust ends of the first pulse exhaust pipe and the second pulse exhaust pipe are communicated with the turbine air inlet; the method is characterized in that: the device also comprises a first return pipe and a second return pipe; one end of the first return pipe is communicated with the turbine air outlet pipe, the other end of the first return pipe is communicated with the first pulse exhaust pipe, a first valve is arranged between the first return pipe and the first pulse exhaust pipe, and the first valve is opened only when the pressure in the first pulse exhaust pipe is smaller than the pressure in the first return pipe; one end of the second return pipe is communicated with the turbine air outlet pipe, the other end of the second return pipe is communicated with the second pulse exhaust pipe, a second valve is arranged between the second return pipe and the second pulse exhaust pipe, and the second valve is opened only when the pressure in the second pulse exhaust pipe is smaller than the pressure in the second return pipe.
2. The pulse turbine system of claim 1, wherein: an annular communicating groove is formed in the inner wall of the turbine air outlet pipe, and a first through hole and a second through hole which are communicated with the communicating groove are formed in the outer wall of the turbine air outlet pipe; one end of the first backflow pipe is communicated with the first through hole, and one end of the second backflow pipe is communicated with the second through hole.
3. The pulse turbine system of claim 2, wherein: the first through hole comprises two first air outlets which are oppositely arranged, the second through hole comprises two second air outlets which are oppositely arranged, and the first air outlets are perpendicular to the second air outlets;
the first return pipe comprises two first return branch pipes and a first return header pipe; one end of each of the two first return branch pipes is communicated with the two first air outlets, the other end of each of the two first return branch pipes is communicated with one end of the first return header pipe, and the other end of the first return header pipe is communicated with the first pulse exhaust pipe;
the second return pipe comprises two second return branch pipes and a second return header pipe; and one ends of the two second reflux branch pipes are respectively communicated with the two second air outlets, the other ends of the two second reflux branch pipes are communicated with one end of a second reflux main pipe, and the other end of the second reflux main pipe is communicated with the second pulse exhaust pipe.
4. The impulse turbine system of claim 2 or 3, wherein: the first return pipe is provided with a bending part at the joint with the first through hole and/or the second return pipe is provided with a bending part at the joint with the second through hole; the bent part and the turbine air outlet pipe are obliquely arranged, the inclination direction is upward inclination, and the inclination angle range is 15-75 degrees.
5. The pulse turbine system according to any one of claims 1 to 3, wherein: the engine air cylinder, the engine air inlet pipe, the impeller air inlet pipe and the impeller air outlet are also included; one end of the engine air inlet pipe is communicated with the impeller air outlet, and the other end of the engine air inlet pipe is communicated with the air inlet end of the engine air cylinder; and the first pulse exhaust pipe and the second pulse exhaust pipe are communicated with an exhaust end of the engine cylinder.
6. The pulse turbine system of claim 5, wherein: the engine cylinders comprise a first cylinder, a second cylinder, a third cylinder and a fourth cylinder; the first pulse exhaust pipe is communicated with the exhaust ends of the second cylinder and the third cylinder respectively; and the second pulse exhaust pipe is respectively communicated with the exhaust ends of the first cylinder and the fourth cylinder.
7. The pulse turbine system of claim 5, wherein: the engine cylinders comprise a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder and a sixth cylinder; the first pulse exhaust pipe is communicated with the exhaust ends of the fourth cylinder, the fifth cylinder and the sixth cylinder respectively; and the second pulse exhaust pipe is respectively communicated with the exhaust ends of the first cylinder, the second cylinder and the third cylinder.
8. The impulse turbine system of any one of claims 1-3, wherein: the first valve and the second valve are both one-way valves.
9. The pulse turbine system of claim 8, wherein: the first valve and the second valve are both mechanical one-way valves or electric control one-way valves.
10. An automobile, characterized in that: the vehicle having mounted thereon the impulse turbine system of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121977854.7U CN218479857U (en) | 2021-08-23 | 2021-08-23 | Pulse turbine system and automobile with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121977854.7U CN218479857U (en) | 2021-08-23 | 2021-08-23 | Pulse turbine system and automobile with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218479857U true CN218479857U (en) | 2023-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121977854.7U Expired - Fee Related CN218479857U (en) | 2021-08-23 | 2021-08-23 | Pulse turbine system and automobile with same |
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| CN (1) | CN218479857U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586228A (en) * | 2021-08-23 | 2021-11-02 | 湖南天雁机械有限责任公司 | Pulse turbine system and automobile with same |
-
2021
- 2021-08-23 CN CN202121977854.7U patent/CN218479857U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586228A (en) * | 2021-08-23 | 2021-11-02 | 湖南天雁机械有限责任公司 | Pulse turbine system and automobile with same |
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Granted publication date: 20230214 |