CN104533599B - The two-stage adjustable pressurization system of internal combustion engine - Google Patents
The two-stage adjustable pressurization system of internal combustion engine Download PDFInfo
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- CN104533599B CN104533599B CN201410843362.7A CN201410843362A CN104533599B CN 104533599 B CN104533599 B CN 104533599B CN 201410843362 A CN201410843362 A CN 201410843362A CN 104533599 B CN104533599 B CN 104533599B
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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
Abstract
The invention discloses a kind of two-stage adjustable pressurization system of internal combustion engine, it includes two groups of cylinder of internal-combustion engine groups；Cylinder of internal-combustion engine group is provided with hiigh pressure stage turbine and lower pressure stage turbine in discharge directions；Cylinder of internal-combustion engine group is provided with low-pressure stage compressor, charge air cooler and hiigh pressure stage compressor on airintake direction；The common power transmission shaft of hiigh pressure stage compressor of hiigh pressure stage turbine and same group, lower pressure stage turbine and the common power transmission shaft of low-pressure stage compressor with group；The side of one intake and exhaust by-passing valve connects the outlet of hiigh pressure stage compressor, and opposite side connects the air inlet of hiigh pressure stage turbine.By setting the outlet of only one intake and exhaust by-passing valve two groups of hiigh pressure stage compressors of connection and the air inlet of hiigh pressure stage turbine, the air inlet of one hiigh pressure stage turbine bypass valve two groups of hiigh pressure stage turbine of connection of further setting and gas outlet so that whole system can be just adjusted with suitable for a variety of operating modes using only less by-passing valve.
Description
Technical field
The present invention relates to the pressure charging system of internal combustion engine, the two-stage adjustable pressurization system of more particularly to a kind of internal combustion engine.
Background technology
With the implementation of following ship Abgasgesetz and to the internal combustion engine such as diesel engine high power density, efficient pursuit,
Two-step supercharging technology with more high pressure ratio is the trend of the internal combustion engine developments such as marine diesel.However, current marine diesel
It is single stage supercharging Deng the internal combustion engine overwhelming majority.Existing two-step supercharging technology is low using a hiigh pressure stage booster and one mostly
The pattern of booster of arbitrarily downgrading series connection, such as a kind of internal combustion engine disclosed in Chinese patent (publication number CN 1834421A), it has hair
Motivation and at least two-stage exhaust-driven turbo-charger exhaust-gas turbo charger being made up of high pressure supercharging device and low-pressure supercharging device, its mesohigh supercharging dress
Put with high-pressure turbine stage, high pressure compressor and the charger-air cooler being connected between high pressure compressor and engine.
But its boost pressure is unadjustable, and pressure charging system can not be made to keep high efficiency in the full working scope that diesel engine runs.
Two-step supercharging system with boost pressure regulating power also has and is employed, but these systems are all asked in the presence of certain
Topic.Such as international monopoly (WO 2010/097979A1) is using low-pressure stage compressor by-passing valve, deflation of hiigh pressure stage turbo valve etc. 5
Bypass or deflation valve regulated boost pressure, Chinese patent CN 103615309A use hiigh pressure stage turbine bypass valve, low-pressure stage
4 bypath valve regulation boost pressures such as turbine bypass valve.But for Marine V diesel engine, because it has two row cylinders, two
The special construction of row air inlet pipe and two row blast pipes, the supercharging pressure control valve door of these systems is more, and system architecture can be caused to answer
It is miscellaneous and be difficult to arrange, overall dimension is huge, pipeline linear loss is big, control method is complicated, the problems such as be more expensive to manufacture.
The content of the invention
The technical problem to be solved in the present invention run under prior art pressurization system of internal combustion engine Part load to be overcome
A kind of defect of inefficiency, there is provided the two-stage adjustable pressurization system of the internal combustion engine of equal energy Effec-tive Function under the conditions of full working scope.
The present invention is to solve above-mentioned technical problem by following technical proposals：
A kind of two-stage adjustable pressurization system of internal combustion engine, its feature is that it includes two groups has in several respectively
The cylinder of internal-combustion engine group of combustion engine cylinder；
The cylinder of internal-combustion engine group is sequentially communicated in discharge directions and is provided with a hiigh pressure stage turbine and a lower pressure stage turbine；
The cylinder of internal-combustion engine group is sequentially communicated on airintake direction and is provided with a low-pressure stage compressor, a charge air cooler and
Hiigh pressure stage compressor；
The hiigh pressure stage turbine is with the common power transmission shaft of the hiigh pressure stage compressor with group, the lower pressure stage turbine and with group
The common power transmission shaft of the low-pressure stage compressor；
The side of one intake and exhaust by-passing valve connects the outlet of hiigh pressure stage compressor described in two groups, and opposite side is connected described in two groups
The air inlet of hiigh pressure stage turbine.
That is, in discharge directions, waste gas is discharged after hiigh pressure stage turbine, lower pressure stage turbine, hiigh pressure stage whirlpool is driven
Wheel and lower pressure stage turbine are rotated, and then kinetic energy is transferred into hiigh pressure stage compressor and low-pressure stage compressor by common power transmission shaft
To increase the charge-air pressure of the two.
In addition, two groups of air inlets of cylinder of internal-combustion engine group, exhaust lay outs share an intake and exhaust by-passing valve.By this construction,
Can be by adjusting the aperture of intake and exhaust by-passing valve, using the pressure difference between hiigh pressure stage blower outlet and hiigh pressure stage turbine inlet
(after the pressure of air inlet circuit is more than the pressure of exhausting waste gas circuit, therefore opening intake and exhaust by-passing valve, air can be from air inlet
Circuit enters exhaust lay out), partial air is not entered charge air cooler and enter hiigh pressure stage turbine, turbine output rate is improved, reach
To the purpose for improving boost pressure.
Preferably, a hiigh pressure stage turbine bypass valve side connects the air inlet of hiigh pressure stage turbine described in two groups, the other end connects
The gas outlet of hiigh pressure stage turbine described in logical two groups.
That is, two groups of air inlets of cylinder of internal-combustion engine group, exhaust lay outs share a hiigh pressure stage turbine bypass valve.Pass through
This construction, can be entered by adjusting the aperture of hiigh pressure stage turbine bypass valve using hiigh pressure stage turbine inlet and lower pressure stage turbine
Pressure differential between mouthful, makes part I. C. engine exhaust be directly entered lower pressure stage turbine without hiigh pressure stage turbine, reduces two-stage whirlpool
Wheel general power, reaches the purpose for reducing boost pressure.
Preferably, charge air cooler described in two groups shares the cooling water pump of a regulating flow quantity.
Preferably, the air inlet of cylinder of internal-combustion engine group described in two groups shares a cylinder of internal-combustion engine inlet gas cooling device.Pass through
This construction, can make two row pressurized airs share a charge air cooler, effectively using arrangement space, reduce internal combustion engine part number
Amount and size, can make Structure of Internal-Combustion Engine more compact.
Preferably, the air inlet of the charge air cooler and gas outlet are respectively arranged with an inlet chamber and an outlet chamber, it is described enter
Set in air cavity and the outlet chamber and be respectively arranged with an at least deflector, one end of the deflector is entered with the charge air cooler
The airflow direction of gas or outlet is parallel, and the other end is bent to air inlet or gas outlet perpendicular to the charge air cooler.
Herein, the effect for setting deflector is to more uniformly spread the air draught into charge air cooler, so can be with
Reduce flow-disturbing loss and then improve the cooling effect of charge air cooler.
Preferably, the charge air cooler, the hiigh pressure stage compressor, the low-pressure stage compressor, the hiigh pressure stage turbine and
The lower pressure stage turbine is provided with the deflector with the junction of pipeline.
Positive effect of the invention is：Calmed the anger by setting two groups of hiigh pressure stages of only one intake and exhaust by-passing valve connection
The outlet of machine and the air inlet of hiigh pressure stage turbine, further set a hiigh pressure stage turbine bypass valve and connect two groups of hiigh pressure stage turbines
Air inlet and gas outlet so that whole system can be just adjusted with suitable for internal combustion engine using only less by-passing valve
A variety of operating conditions.
Brief description of the drawings
Fig. 1 is the structural representation of the two-stage adjustable pressurization system of the internal combustion engine of present pre-ferred embodiments.
Fig. 2 is the low-pressure stage compressor of present pre-ferred embodiments and the stereogram of the attachment structure of charge air cooler.
Fig. 3 is the top view of the inlet chamber of present pre-ferred embodiments.
Fig. 4 is the structural representation of the section of the inlet chamber of present pre-ferred embodiments.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.
Fig. 1 is the structural representation of the two-stage adjustable pressurization system of the internal combustion engine of the present embodiment, as shown in figure 1, this implementation
The two-stage adjustable pressurization system of the internal combustion engine of example is used for Marine V diesel engine, and it includes two groups has several internal combustions respectively
The cylinder of diesel engine group and two-step supercharging module 2 of machine cylinder.
The blast pipe 1 and blast pipe 13 of cylinder of diesel engine group are sequentially communicated in discharge directions and are provided with hiigh pressure stage turbine 4
With lower pressure stage turbine 8.Two groups of air inlet pipe of cylinder of diesel engine group 15 are sequentially communicated on airintake direction and are provided with low-pressure stage and calm the anger
Machine 6, charge air cooler 5 and hiigh pressure stage compressor 3.
Hiigh pressure stage turbine 4 and the common power transmission shaft of hiigh pressure stage compressor 3 with group, lower pressure stage turbine 8 and the low-pressure stage pressure with group
The common power transmission shaft of mechanism of qi 6.
The side of intake and exhaust by-passing valve 12 connects two groups of outlets of hiigh pressure stage compressor 3, and opposite side connects two groups of hiigh pressure stages
The air inlet of turbine 4.The side of hiigh pressure stage turbine bypass valve 10 connects two groups of air inlets of hiigh pressure stage turbine 4 (i.e. by institute in Fig. 1
The air inlet of the connection hiigh pressure stage of bypass line 11 turbine 4 for showing), the gas outlet that the other end connects two groups of hiigh pressure stage turbines 4 (connects
Blast pipe 7 between the turbine between logical Fig. 1 mesohighs level turbine 4 and lower pressure stage turbine 8).
Two groups of charge air coolers 5 share the cooling water pump 9 of regulating flow quantity.
Two groups of air inlets of cylinder of diesel engine group share a cylinder of internal-combustion engine inlet gas cooling device 14.
Fig. 2 is the low-pressure stage compressor of the present embodiment and the stereogram of the attachment structure of charge air cooler, and Fig. 3 is the present embodiment
The top view of inlet chamber, Fig. 4 is the structural representation of the section of the inlet chamber of the present embodiment, as shown in figs. 2 to 4, charge air cooler 5
Air inlet and gas outlet are respectively arranged with inlet chamber 21 and outlet chamber 22.The inlet chamber 21 of charge air cooler 5 by intake elbow 24 with
The outlet of low-pressure stage compressor 6.Set in inlet chamber 21 and outlet chamber 22 and be respectively arranged with deflector 23, deflector 23
One end is parallel with the air inlet of charge air cooler 5 or the airflow direction of outlet, the other end be bent to perpendicular to charge air cooler 5 air inlet or
Gas outlet.Split corresponding interface respectively for two deciles in the two ends of deflector 23.In addition, hiigh pressure stage compressor 3, low-pressure stage is calmed the anger
Machine 6, hiigh pressure stage turbine 4 and lower pressure stage turbine 8 are provided with deflector with the junction of pipeline.
The cooling water inflow of charge air cooler 5 and cylinder of internal-combustion engine inlet gas cooling device 14 is adjustable, by the cooling water of adjustable flow
Pump 9 provides different cooling water flows, and the gas temperature after intercooler can be controlled to match with the running status of system,
Gas temperature is 40-50 DEG C after preferred intercooler, can provide different cooling during rollings under diesel engine difference operating mode
Gas temperature after device, optimizes system overall performance, improves system total efficiency.
On the one hand, by adjusting the aperture of hiigh pressure stage turbine bypass valve, import and low-pressure stage whirlpool using hiigh pressure stage turbine
Pressure differential between the import of wheel, makes part diesel exhaust gas that lower pressure stage turbine is directly entered without high-pressure turbine, reduces by two
Level turbine general power, reaches the purpose for reducing boost pressure.On the other hand, two tubulation roads share an intake and exhaust by-passing valve, can
With the aperture by adjusting intake and exhaust by-passing valve, using the pressure difference between hiigh pressure stage blower outlet and hiigh pressure stage turbine inlet,
Partial air is not entered charge air cooler and enter hiigh pressure stage turbine, improve turbine power, reach the purpose for improving boost pressure.
It is that every group of cylinder equips a low-pressure stage booster and one respectively for the structure type of Marine V diesel engine
Hiigh pressure stage booster, intercooler is respectively configured between two low-pressure stage compressors and hiigh pressure stage compressor, be used to reduce into
Enter the air themperature of hiigh pressure stage compressor.Intercooler is placed in low-pressure stage booster lower section, by this construction, can save
Installing space, controls diesel engine size.Two row hiigh pressure stage blower outlet pipelines lead to two row pressurized airs by particular design
(it can use same cooling dress with charge air cooler 5 into cylinder of internal-combustion engine inlet gas cooling device 14 to cross an inlet manifold
Put), the inlet manifold is positioned in the v-angle of diesel engine, and cylinder of internal-combustion engine inlet gas cooling device is located at one end of diesel engine.
By this construction, two row pressurized airs can be made to share a cylinder of internal-combustion engine inlet gas cooling device, be effectively empty using cloth
Between, diesel engine part quantity and size are reduced, engine block can be made more compact.
Although the foregoing describing specific embodiment of the invention, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
On the premise of principle of the invention and essence, various changes or modifications can be made to these implementation methods, these change and repair
Change and each fall within protection scope of the present invention.
Claims (3)
1. the two-stage adjustable pressurization system of a kind of internal combustion engine, it is characterised in that it includes two groups has several internal combustions respectively
The cylinder of internal-combustion engine group of machine cylinder；
The downtake pipe and second exhaust pipe of the cylinder of internal-combustion engine group are sequentially communicated in discharge directions and are provided with a high pressure
Level turbine and a lower pressure stage turbine, the side of a hiigh pressure stage turbine bypass valve connect the air inlet of hiigh pressure stage turbine described in two groups,
Opposite side connects the gas outlet of hiigh pressure stage turbine described in two groups, and bypass conduit connects the air inlet of the hiigh pressure stage turbine；
The cylinder of internal-combustion engine group is sequentially communicated on airintake direction and is provided with a low-pressure stage compressor, a charge air cooler and a high pressure
Level compressor, the air inlet of cylinder of internal-combustion engine group described in two groups shares a cylinder of internal-combustion engine inlet gas cooling device, the two row height
Blower outlet pipeline of arbitrarily downgrading enters the cylinder of internal-combustion engine inlet gas cooling device by an inlet manifold；
The hiigh pressure stage turbine and with group the hiigh pressure stage compressor altogether power transmission shaft, the lower pressure stage turbine with group described in
The common power transmission shaft of low-pressure stage compressor；
The side of one intake and exhaust by-passing valve connects the outlet of hiigh pressure stage compressor described in two groups, and opposite side connects high pressure described in two groups
The air inlet of level turbine；
The air inlet of the charge air cooler and gas outlet are respectively arranged with an inlet chamber and an outlet chamber, the inlet chamber and it is described go out
Set in air cavity and be respectively arranged with an at least deflector, the air inlet of one end of the deflector and the charge air cooler or outlet
Airflow direction is parallel, and the other end is bent to air inlet or gas outlet perpendicular to the charge air cooler, the two ends point of the deflector
Do not split corresponding interface for two deciles.
2. the two-stage adjustable pressurization system of internal combustion engine as claimed in claim 1, it is characterised in that charge air cooler described in two groups is shared
The cooling water pump of one regulating flow quantity.
3. the two-stage adjustable pressurization system of internal combustion engine as claimed in claim 1, it is characterised in that the charge air cooler, the height
The arbitrarily downgrade junction of compressor, the low-pressure stage compressor, the hiigh pressure stage turbine and the lower pressure stage turbine and pipeline is all provided with
It is equipped with the deflector.
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| CN201410843362.7A CN104533599B (en) | 2014-12-29 | 2014-12-29 | The two-stage adjustable pressurization system of internal combustion engine |
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| CN201410843362.7A CN104533599B (en) | 2014-12-29 | 2014-12-29 | The two-stage adjustable pressurization system of internal combustion engine |
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| CN104533599A CN104533599A (en) | 2015-04-22 |
| CN104533599B true CN104533599B (en) | 2017-06-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106065809B (en) * | 2015-04-24 | 2020-12-25 | 福特环球技术公司 | Engine with two-stage supercharging and exhaust gas aftertreatment and method for operating the same |
| CN107237686A (en) * | 2017-05-10 | 2017-10-10 | 哈尔滨工程大学 | Realize two-stage consecutive pressurization system structure and control method that overall performance improves |
| CN110284958B (en) * | 2019-05-31 | 2020-09-08 | 北京理工大学 | Two-stage supercharging system for V-shaped 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 |
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