CN206234015U - A kind of waste gas recycles pressure charging system and two-step supercharging internal combustion engine - Google Patents
A kind of waste gas recycles pressure charging system and two-step supercharging internal combustion engine Download PDFInfo
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- CN206234015U CN206234015U CN201621353090.3U CN201621353090U CN206234015U CN 206234015 U CN206234015 U CN 206234015U CN 201621353090 U CN201621353090 U CN 201621353090U CN 206234015 U CN206234015 U CN 206234015U
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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
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
This application discloses a kind of waste gas recycling pressure charging system and two-step supercharging internal combustion engine, belong to field of internal combustion engine, waste gas recycling pressure charging system includes exhaust gas recirculation (egr) valve system, for controlling the waste gas to recycle the gas inlet amount of pressure charging system；Waste gas recycles compressor, and for compressed exhaust gas, the waste gas recycling compressor is connected with the motor for providing power of calming the anger to waste gas recycling；Exhaust gas recirculation mixer, for waste gas and air to be mixed；Exhaust gas recirculation (egr) valve system is connected with waste gas recycling compressor, and waste gas recycling compressor is connected with exhaust gas recirculation mixer, and exhaust gas recirculation mixer connects air-source and air-intake of combustion engine house steward respectively.Two-step supercharging internal combustion engine includes pressurization system of internal combustion engine and internal combustion engine, also recycles pressure charging system including waste gas.The utility model compares existing internal combustion engine, and with more preferable efficiency of combustion, output power of internal combustion engine is stronger, more energy-saving and emission-reduction.
Description
Technical field
The utility model is related to field of internal combustion engine, and in particular to a kind of waste gas recycles pressure charging system and two-step supercharging internal combustion
Machine.
Background technology
Current increasing engine uses turbocharging technology to tackle current increasingly strict engine emission method
Ensure its effective output while rule.EGR Technology (waste gas recycling) introduces air inlet by by I. C. engine exhaust
In-cylinder combustion is participated in again, can reduce gaseous mixture oxygen content in ignition temperature and cylinder, and then reduce the generation and discharge of NOx.
Two-step supercharging technology is connected by two turbocharger and improve suction press using I. C. engine exhaust energy, can improve interior
The power density and efficiency of combustion engine.
Traditional two-step supercharging gas recirculation system has high pressure exhaust gas to recycle, middle pressure waste gas is recycled and low pressure exhaust gas
Three kinds of exhaust gas recirculation circuits of recycling, such as patent publication No. is created for a utility model of CN201513259U and disclosed
A kind of tandem type two-stage engine with supercharger exhaust gas recirculation multi-loop device, including engine, hiigh pressure stage booster, low-pressure stage increase
Depressor, hiigh pressure stage air inlet pipe, hiigh pressure stage blast pipe, hiigh pressure stage exhaust gas reclrculation pipe, medium pressure grade air inlet pipe, medium pressure grade blast pipe,
Medium pressure grade exhaust gas reclrculation pipe, low-pressure stage air inlet pipe, low-pressure stage blast pipe, low-pressure stage exhaust gas reclrculation pipe, three waste gas are followed again
Control valve is equipped with endless tube road respectively.
The structure that above-mentioned patent document is introduced by selecting exhaust gas recirculation circuit, start alone or in combination by the guarantee of work
Machine all obtains enough recirculated exhaust gas flows under each operating mode, is given up when can avoid only with high pressure exhaust gas recirculation circuit
The limited problem of gas recirculation rate, but, however it remains some is not enough below：
First, system pipeline that above-mentioned patent document is introduced is various, complex structure, reliability reduction；
Second, in middle high load capacity because admission pressure must press waste gas recycling and low pressure more than pressure at expulsion in use
Exhaust gas recirculation circuit, ER EGR Rate regulation is complicated and can consume exhaust gas turbine work(；
Third, mixing arrangement of the patent without waste gas EGR gas Yu fresh air, can cause egr gas
Mix uneven with fresh air, in-cylinder combustion local deteriorated, efficiency of internal combustion engine reduction；
Fourth, because the patent is without pressurized air cascade EDFA, pressure charging system efficiency can be caused low, deficiency of air, bavin
The problems such as oil machine burning is bad, economy is reduced, soot emissions are raised.
Utility model content
In view of drawbacks described above of the prior art or deficiency, the utility model purpose is to provide a kind of waste gas recycling to increase
Pressure system and two-step supercharging internal combustion engine.
According to one side of the present utility model, there is provided a kind of waste gas recycles pressure charging system, including waste gas recycling
Valve system, waste gas recycling compressor and exhaust gas recirculation mixer, exhaust gas recirculation (egr) valve system are arranged on waste gas again
On the pipeline that circulation compressor is connected, to control the waste gas to recycle the air inflow of compressor；The waste gas recycling is mixed
The inlet end of clutch connects waste gas recycling compressor and the air-source respectively, and waste gas recycling compressor is coaxially connected with and carries
The drive device of voltage supply aerodynamic force.Exhaust gas recirculation mixer, for waste gas and air to be mixed；Waste gas recycling herein is calmed the anger
The meaning of machine compressed exhaust gas is to increase exhaust gas pressure and density, improves exhaust gas pressure and concentration, is conducive to increasing exhaust energy
Transformation efficiency；
Herein, drive device drives waste gas recycling compressor to provide boost pressure for egr gas, makes it can
Exhaust gas recirculation mixer and improve exhaust gas concentration to overcome admission pressure to enter, in exhaust gas recirculation mixer waste gas with it is new
After fresh air is well mixed, cylinder of internal-combustion engine is entered by inlet manifold and participates in burning.Also, motor can be by basis
Inlet pressure and Flow-rate adjustment waste gas the recycling rotating speed of gas compressor of egr gas, make waste gas recycle compressor and exist
All there is efficiency higher in internal combustion engine full working scope, and then reduce motor wasted work, improve system total efficiency.It is noticeable
It is that drive device is rotating speed adjustable motor.
Exhaust gas recirculation (egr) valve system, is made up of multiple exhaust gas recirculation (egr) valves, for controlling the waste gas EGR gas
The gas inlet amount of pressure charging system, specifically control enter the gas inlet amount that waste gas recycles compressor；
Because EGT is higher, according to the principle expanded with heat and contract with cold, the air capacity into waste gas recycling compressor is less,
So the waste gas density after being compressed through waste gas recycling compressor is still smaller, in order to solve this problem, in waste gas recycling
Cooler for recycled exhaust gas is connected between compressor and exhaust gas recirculation (egr) valve system, waste gas is cooled down through cooler for recycled exhaust gas
Afterwards, contraction of gas, so into the exhausted air quantity increase of waste gas recycling compressor, waste gas after compressor compresses is recycled through waste gas
Density increases significantly.
According to other side of the present utility model, there is provided a kind of two-step supercharging internal combustion engine, the two-step supercharging internal combustion engine
Including pressurization system of internal combustion engine and cylinder, pressure charging system also is recycled including above-mentioned waste gas,
Pressurization system of internal combustion engine is located at and inlet manifold and exhaust is respectively arranged between air-source and the cylinder, on cylinder
House steward；The outlet side connection inlet manifold of exhaust gas recirculation mixer, pipeline and exhaust residing for exhaust gas recirculation (egr) valve system
House steward is connected.
Pressurization system of internal combustion engine includes low-pressure stage compressor, and the effect of low-pressure stage compressor is will to enter the supercharging of internal combustion engine
The fresh air of system is compressed, and is used to increase oxygen concentration, because low-pressure stage compressor makes air themperature to air acting
Increase, in order to be expanded when preventing the air after being pressurized from being flowed out from low-pressure stage compressor, so in low-pressure stage compressor gas outlet
Interstage cooler is connected with, interstage cooler will be lowered the temperature by compressed air, it is ensured that will not be reduced by compressed air density；
Pressurization system of internal combustion engine also includes lower pressure stage turbine, and lower pressure stage turbine is rotated coaxially with low-pressure stage compressor and is connected,
The lower pressure stage turbine is connected with the exhaust main, and the exhaust gas recirculation (egr) valve system is arranged on the blast pipe of exhaust main
Lu Shang, the waste gas of exhaust main discharge promotes lower pressure stage turbine to rotate, because lower pressure stage turbine coaxially turns with low-pressure stage compressor
Dynamic connection, so lower pressure stage turbine is rotated as low-pressure stage compressor provides power.
Pressurization system of internal combustion engine also includes：
Hiigh pressure stage compressor, hiigh pressure stage compressor one end is connected with interstage cooler, the connection of the hiigh pressure stage compressor other end
There is charge air cooler, charge air cooler is connected with hiigh pressure stage compressor and exhaust gas recirculation mixer respectively, hiigh pressure stage compressor and charge air cooler
Cooperate, on the basis of low-pressure stage compressor and interstage cooler, further compresses fresh air is done work, further increase
Add the oxygen content into exhaust gas recirculation mixer, significantly increase the efficiency of waste gas work by combustion in the cylinder；
Exhaust gas recirculation mixer connects waste gas recycling compressor and inlet manifold, cooled high-density air respectively
It is sufficiently mixed uniformly in exhaust gas recirculation mixer with waste gas, in-cylinder combustion is participated in subsequently into cylinder, due to admission pressure
Height, the oxygen content of waste gas is high, and air inflow is big, and volumetric efficiency is big in cylinder, and gaseous mixture is uniform and high combustion efficiency, and then reaches raising
System and the efficiency of internal combustion engine, the purpose for improving internal combustion engine economy.
The beneficial effects of the utility model are：
1. waste gas recycling pressure charging system and the two-step supercharging internal combustion engine of the utility model example, realize internal combustion engine and give up
Gas recycling participates in in-cylinder combustion, not only reduces the consumption of fuel, and reduces exhaust pollutant, with energy-saving and emission-reduction
Advantage, supercharged engine compared to existing technology, effects of energy saving and emission reduction is more preferably protruded；
2. the waste gas of the utility model example recycles pressure charging system and two-step supercharging internal combustion engine, respectively by low pressure exhaust gas
Recycle valve, middle pressure exhaust gas recirculation valve and high pressure exhaust gas recycle valve adjust different exhaust gas recirculation circuits, are carried with this
Recirculated exhaust gas flow high, and the demand of EGR rate can be adjusted according to internal combustion engine difference operating mode, and then it is total to improve system
Efficiency, effectively reduce engine exhaust；
3. the two-step supercharging internal combustion engine of the utility model example, intake and exhaust by-passing valve and hiigh pressure stage turbine bypass valve can be with roots
Different demands is adjusted according to internal combustion engine full working scope, has both been improved internal combustion engine operation efficiency and in turn ensure that the safety of internal combustion engine
Reliability, improves internal combustion engine service life；
4. waste gas recycling pressure charging system and the two-step supercharging internal combustion engine of the utility model example, set waste gas recycling mixed
Clutch makes waste gas uniformly mix with fresh air, improves in-cylinder combustion efficiency, has the advantages that energy-saving and emission-reduction；
5. the two-step supercharging internal combustion engine of the utility model example, low-pressure stage compressor, interstage cooler, hiigh pressure stage compressor
And charge air cooler realizes two stages of compression and the two-stage cooling of inlet air, can improve compressor isentropic efficiency, improves into airtight
Degree and pressure, and then pressure charging system efficiency is improved, further up to the mesh for improving the efficiency of internal combustion engine, improving internal combustion engine economy
's.
Brief description of the drawings
By the detailed description made to non-limiting example made with reference to the following drawings of reading, the application other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of the utility model embodiment two-step supercharging internal combustion engine.
In figure：1. cylinder, 2. exhaust main, 3. high pressure exhaust gas recycle valve, 4. hiigh pressure stage turbine, 5. by hiigh pressure stage turbine
Port valve, 6. in press exhaust gas recirculation valve, 7. low pressure exhaust gas recycle valve, 8. lower pressure stage turbine, 9. low-pressure stage compressor, 10. grade
Between cooler, 11. hiigh pressure stage compressors, 12. intake and exhaust by-passing valves, 13. charge air coolers, 14. exhaust gas recirculation mixers, 15. enter
Gas house steward, 16. cooler for recycled exhaust gases, 17. waste gas recycling compressor, 18. motors.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining relevant utility model, rather than the restriction to the utility model.Further need exist for explanation
, for the ease of description, the part related to utility model is illustrate only in accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, a kind of waste gas recycling pressure charging system, the waste gas recycles pressure charging system to be included：Waste gas is recycled
Valve system, the gas inlet amount for controlling the waste gas EGR gas pressure charging system；Waste gas recycles compressor 17, is used for
Compressed exhaust gas, waste gas recycling compressor 17 is connected with the motor 18 for providing power of calming the anger to waste gas recycling；It is useless
Gas recirculation mixer 14, for waste gas and air to be mixed；Exhaust gas recirculation (egr) valve system recycles compressor 17 with waste gas
Connection, waste gas recycling compressor 17 is connected with the exhaust gas recirculation mixer 14, and exhaust gas recirculation mixer 14 connects respectively
Meet air-source and air-intake of combustion engine house steward 15.It is connected between waste gas recycling compressor 17 and exhaust gas recirculation (egr) valve system useless
Gas recycle cooler 16.
As shown in figure 1, a kind of two-step supercharging internal combustion engine, the two-step supercharging internal combustion engine includes pressurization system of internal combustion engine and internal combustion
Machine, also including waste gas EGR gas pressure charging system, described internal combustion engine includes：Cylinder 1, it is total that cylinder 1 is respectively arranged with air inlet
Pipe 15 and exhaust main 2；
Pressurization system of internal combustion engine includes low-pressure stage compressor 9, interstage cooler 10, hiigh pressure stage compressor 11 and charge air cooler
13, along air-intake of combustion engine direction, the connection interstage cooler 10 of low-pressure stage compressor 9, the connection of interstage cooler 10 hiigh pressure stage is calmed the anger
Machine 11, the connection charge air cooler 13 of hiigh pressure stage compressor 11, the connection exhaust gas recirculation mixer 14 of charge air cooler 13, waste gas recycling mixing
Device 14 is connected with inlet manifold 15；
Pressurization system of internal combustion engine also includes hiigh pressure stage turbine 4 and lower pressure stage turbine 8, along I. C. engine exhaust direction, internal combustion engine
The connection of exhaust main 2 hiigh pressure stage turbine 4, the connection lower pressure stage turbine 8 of hiigh pressure stage turbine 4；
Wherein, hiigh pressure stage compressor 11 and low-pressure stage compressor 9 are coaxial with hiigh pressure stage turbine 4 and lower pressure stage turbine 8 respectively
Rotate.
Exhaust gas recirculation (egr) valve system includes low pressure exhaust gas recycle valve 7, the one end of low pressure exhaust gas recycle valve 7 and low-pressure stage
The gas outlet of turbine 8 connects, and the other end of low pressure exhaust gas recycle valve 7 is connected with cooler for recycled exhaust gas 16.Exhaust gas recirculation valve
Door system also includes middle pressure exhaust gas recirculation valve 6, and middle pressure one end of exhaust gas recirculation valve 6 is connected with the gas outlet of hiigh pressure stage turbine 4,
The middle pressure other end of exhaust gas recirculation valve 6 is connected with cooler for recycled exhaust gas 16.Exhaust gas recirculation (egr) valve system also includes high pressure
Exhaust gas recirculation valve 3, one end of high pressure exhaust gas recycle valve 3 is connected with exhaust main 2, the other end of high pressure exhaust gas recycle valve 3 with
Cooler for recycled exhaust gas 16 is connected.
Intake and exhaust by-passing valve 12 is connected between the air inlet of hiigh pressure stage turbine 4 and the gas outlet of hiigh pressure stage compressor 11.High pressure
Hiigh pressure stage turbine bypass valve 5 is connected between the level air inlet of turbine 4 and the air inlet of the lower pressure stage turbine 8.Described waste gas is again
Circulation blender 14 is three-port structure, and the charge air cooler 13, inlet manifold 15 and waste gas recycling compressor 17 are connected respectively.
The two-step supercharging internal combustion engine working process is：Catch fire after startup, cylinder 1 is started working and done work：
On the one hand, internal combustion engine starts from outside absorption air, and air is first into carrying out one-level in low-pressure stage compressor 9
Compression, air after one stage of compression then into carrying out one-level cooling in interstage cooler 10, the air after being cooled down through one-level
Enter into interstage cooler 10 after carrying out one-level cooling carries out two-stage compression into hiigh pressure stage compressor 11, then into
Cooler 13 carries out two grades of coolings, and air enters into exhaust gas recirculation mixer 14 after being cooled down through two grades；
On the other hand, the waste gas that burning is produced in cylinder 1 is transported at hiigh pressure stage turbine 4 through exhaust main 2 and blows height
Turbine 4 of arbitrarily downgrading rotates, and the waste gas for then passing through hiigh pressure stage turbine 4 continues to blow lower pressure stage turbine 8 and rotates, and then waste gas can pass through
It is cold that the regulation of high pressure exhaust gas recycle valve 3, middle pressure exhaust gas recirculation valve 6 or senior exhaust gas recirculation valve enters into waste gas recycling
But in device 16, entered into exhaust gas recirculation mixer 14 after being compressed through waste gas recycling compressor 17 again after waste gas cooling；
Now, in exhaust gas recirculation mixer 14, air and waste gas enter into gas after uniformly mixing through inlet manifold 15
In cylinder 1, make waste gas that second-time burning acting is carried out in cylinder 1.
Wherein, when internal combustion engine needs less exhaust gas flow, by opening and high pressure exhaust gas recycle valve 3 can be adjusted
High pressure exhaust gas recirculation circuit is formed, waste gas is adjusted to desired flow by high pressure exhaust gas recycle valve 3 and is entered waste gas again
In recirculation cooler 16；
When the exhaust gas flow during internal combustion engine needs relatively, exhaust gas recirculation valve 6 can be pressed to be formed by opening and in adjusting
Middle pressure exhaust gas recirculation circuit, makes waste gas press exhaust gas recirculation valve 6 to adjust to desired flow in passing through and is recycled into waste gas
In cooler 16；
When internal combustion engine needs larger exhaust gas flow, by opening and low pressure exhaust gas recycle valve 7 can be adjusted formed
Low pressure exhaust gas recirculation circuit, makes waste gas be adjusted to desired flow by low pressure exhaust gas recycle valve 7 and is recycled into waste gas
In cooler 16；
Meanwhile, for real-time guard internal combustion engine stabilization, increasing combustion engine service life, intake and exhaust by-passing valve 12 and height
Turbine bypass valve of arbitrarily downgrading 5 can be adjusted according to the operating mode of specific internal combustion engine, and its detailed course of work is：
When internal combustion engine operation is in low operating mode, by opening and intake and exhaust by-passing valve 12 can be adjusted, internal combustion is improved with this
The admission pressure of machine inlet manifold 15 in speed operation, improves engine performance, optimizes internal combustion engine full working scope operational efficiency, enters
One step reaches raising system and the efficiency of internal combustion engine, improves internal combustion engine economy.
When internal combustion engine operation is in operating mode high, by opening and hiigh pressure stage turbine bypass valve 5 can be adjusted, be reduced with this
By the exhaust gas flow of hiigh pressure stage turbine 4 during internal combustion engine operating mode high, and then prevent senior compressor excessive to supercharging air.Institute
With, the size of supercharging air degree can be controlled by this regulation, prevent from making combustion engine mechanical load mistake because air pressure is too high
It is high.
It is worth noting that, exhaust gas recirculation mixer preferably uses Venturi tube, Venturi tube has the advantages that pressure difference is big,
Waste gas can be improved by gas extraction system into air velocity during exhaust gas recirculation mixer, waste gas is more smoothly entered mixing
Device, and then improve waste gas and the mixed uniformly effect of air.
Above-mentioned exhaust gas recirculation mixer is not limited only to use Venturi tube, can also replace other threeways such as heat-resisting cavity volume
Structure.
The cylinder of above-mentioned internal combustion engine is not limited only to the distribution in upright arrangement shown in Figure of description, also replaceable V-type distribution etc.
Other kinds of internal combustion engine.
Above description is only the preferred embodiment and the explanation to institute's application technology principle of the application.People in the art
Member is it should be appreciated that involved utility model scope in the application, however it is not limited to the particular combination of above-mentioned technical characteristic
Technical scheme, while should also cover not departing from the case that the utility model conceives, by above-mentioned technical characteristic or its be equal to
Other technical schemes that feature is combined and is formed.Such as features described above has with (but not limited to) disclosed herein
The technical scheme that the technical characteristic for having similar functions is replaced mutually and formed.
Claims (10)
1. a kind of waste gas recycles pressure charging system, it is characterized in that, including exhaust gas recirculation (egr) valve system, waste gas recycling compressor
And exhaust gas recirculation mixer, the exhaust gas recirculation (egr) valve system is arranged on and is connected with waste gas recycling compressor
On pipeline, to control the waste gas to recycle the air inflow of compressor；The inlet end of the exhaust gas recirculation mixer connects respectively
Waste gas recycling compressor and the air-source are connect, the waste gas recycling compressor connects the driving for being provided with calming the anger power and fills
Put.
2. waste gas according to claim 1 recycling pressure charging system, it is characterized in that, described waste gas recycling compressor with
Cooler for recycled exhaust gas is connected between the exhaust gas recirculation (egr) valve system.
3. a kind of two-step supercharging internal combustion engine, it is characterized in that, including the pressurization system of internal combustion engine and cylinder being connected by pipeline, also
Pressure charging system is recycled including the waste gas described in claim 1 or 2；
The pressurization system of internal combustion engine is total positioned at air inlet is respectively arranged between the air-source and the cylinder, on the cylinder
Pipe and exhaust main；The outlet side of the exhaust gas recirculation mixer connects the inlet manifold, the exhaust gas recirculation (egr) valve
Pipeline residing for system is connected with the exhaust main.
4. two-step supercharging internal combustion engine according to claim 3, it is characterized in that, the pressurization system of internal combustion engine includes low voltage section
Part and high voltage component, the high voltage component are located between the low pressure components and the cylinder；The low pressure components include coaxial
The low-pressure stage compressor and lower pressure stage turbine of connection, the high voltage component include coaxially connected hiigh pressure stage compressor and hiigh pressure stage
Turbine, is provided with interstage cooler between low-pressure compressor and high-pressure compressor.
5. two-step supercharging internal combustion engine according to claim 4, it is characterized in that, the hiigh pressure stage compressor passes through the waste gas
Recirculation mixer is connected with the inlet manifold, and the hiigh pressure stage turbine is connected with the exhaust main；In hiigh pressure stage
Charge air cooler is provided between compressor and exhaust gas recirculation mixer.
6. the two-step supercharging internal combustion engine according to claim 4 or 5, it is characterized in that, described exhaust gas recirculation (egr) valve system
Including low pressure exhaust gas recycle valve, the low pressure exhaust gas recycle valve is arranged on the gas outlet of the lower pressure stage turbine and described useless
Between gas recycle cooler.
7. two-step supercharging internal combustion engine according to claim 6, it is characterized in that, described exhaust gas recirculation (egr) valve system is also wrapped
Middle pressure exhaust gas recirculation valve is included, medium pressure exhaust gas recirculation valve one end is connected to lower pressure stage turbine and hiigh pressure stage whirlpool by pipeline
Between wheel, the medium pressure exhaust gas recirculation valve other end is connected on the pipeline being connected with waste gas recycling compressor.
8. two-step supercharging internal combustion engine according to claim 7, it is characterized in that, described exhaust gas recirculation (egr) valve system is also wrapped
High pressure exhaust gas recycle valve is included, described high pressure exhaust gas recycle valve one end is connected at the air inlet of the hiigh pressure stage turbine, institute
The high pressure exhaust gas recycle valve other end is stated to be connected on the pipeline being connected with waste gas recycling compressor.
9. two-step supercharging internal combustion engine according to claim 8, it is characterized in that, the hiigh pressure stage compressor gas outlet and high pressure
Intake and exhaust by-passing valve is provided between level turbine air-intake, is set between hiigh pressure stage turbine air-intake and lower pressure stage turbine air inlet
It is equipped with hiigh pressure stage turbine bypass valve.
10. two-step supercharging internal combustion engine according to claim 9, it is characterized in that, the waste gas recycles compressor and waste gas
Recirculation mixer is connected by gas exhaust piping, and the another two ends of exhaust gas recirculation mixer are connected to the inlet manifold of internal combustion engine
On.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621353090.3U CN206234015U (en) | 2016-12-09 | 2016-12-09 | A kind of waste gas recycles pressure charging system and two-step supercharging internal combustion engine |
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| CN201621353090.3U CN206234015U (en) | 2016-12-09 | 2016-12-09 | A kind of waste gas recycles pressure charging system and two-step supercharging internal combustion engine |
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| CN206234015U true CN206234015U (en) | 2017-06-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481484A (en) * | 2016-12-09 | 2017-03-08 | 中国船舶重工集团公司第七研究所 | A kind of waste gas recirculation pressure charging system and two-step supercharging internal combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481484A (en) * | 2016-12-09 | 2017-03-08 | 中国船舶重工集团公司第七研究所 | A kind of waste gas recirculation pressure charging system and two-step supercharging internal combustion engine |
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Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |