CN101749148A - Internal combustion engine with two exhaust gas turbochargers connected in series - Google Patents
Internal combustion engine with two exhaust gas turbochargers connected in series Download PDFInfo
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- CN101749148A CN101749148A CN200910260812A CN200910260812A CN101749148A CN 101749148 A CN101749148 A CN 101749148A CN 200910260812 A CN200910260812 A CN 200910260812A CN 200910260812 A CN200910260812 A CN 200910260812A CN 101749148 A CN101749148 A CN 101749148A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
- F01N5/04—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using kinetic energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0412—Multiple heat exchangers arranged in parallel or in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/004—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust drives arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
- F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
- F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
- F02M25/0222—Water recovery or storage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
- F02M25/028—Adding water into the charge intakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/08—EGR systems specially adapted for supercharged engines for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
- F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
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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 relates to an internal combustion engine with two exhaust-gas turbochargers connected in series, in particular to an internal combustion engine (10) having two exhaust-gas turbochargers (22, 26) connected in series, each of which comprises an exhaust-gas turbine (34, 36) in an exhaust-gas line (32) and a compressor (20, 24) in an intake side (18). In order to reduce nitrogen oxide emissions, an exhaust gas recirculation line (40) is provided which branches off from the exhaust gas line (32) upstream of an exhaust gas turbine (36) of an exhaust gas turbocharger (26) close to the engine and opens into the intake side (18) between the compressors (20, 24) of the two exhaust gas turbochargers (22, 26), and means (29, 44) are provided for cooling and humidifying the exhaust gas flow recirculated into the intake side (18) by means of the exhaust gas recirculation line (40). The system can be advantageously used in particular in large diesel engines which operate with heavy oil.
Description
Technical field
The present invention relates to a kind of (in Reihe geschalteten) two exhaust-gas turbochargers of serial connection and internal-combustion engine of exhaust gas recirculation of having.
Background technique
Waste gas cooled recirculation (AGR) is a kind of very effective method that is used to reduce discharged nitrous oxides.In its diesel engine (Dieselmotoren) (for example referring to file DE 10 2,004 009 794 A1) and in the large-scale motor that runs up, for example in railway applications, also be used more and more at the vehicle of all prior aries.The large-scale diesel engine that heavy oil promotes can have the mode of the AGR of cooling equally and move.In this case, about 10% ER EGR Rate will cause about 35% to 40% discharged nitrous oxides decrement.
In the vehicle motor that runs up, AGR mainly is used under low power situation in the circulation of travelling and comes work with negative scavenging pressure reduction (Spuelgefaellen), therein, the exhaust gas pressure after the cylinder of internal-combustion engine is greater than the charge-air pressure before the cylinder of internal-combustion engine (Ladeluftdruck).In large-scale diesel engine, high power weight in the operation circulation is bigger.Yet under high-power situation, the desired low member temperature and the positive scavenging pressure reduction at internal-combustion engine place make AGR become difficulty in the heavy oil engine.
In addition, there are the following problems in the large-scale diesel engine that utilizes heavy oil to move, promptly, can produce residue (Rueckstaende) in the burning of heavy oil, it may be in the alluvial of the member place of this pressurized air of guiding (Ladeluft) after exhaust flow (Abgasstrom) is recycled in the compressed charge air flow (Ladeluftstrom).For this reason, for example file DE 10 2,006 048269 A1 have advised a kind of internal-combustion engine, and therein, the exhaust flow that is cooled directly is recycled in the cylinder of internal-combustion engine by AGR.
By exhaust gas recirculation, the oxygen supply of burning that is used for the cylinder of internal-combustion engine is lowered, and this finally causes the minimizing of discharged nitrous oxides.So, the oxygen concentration in pressurized air is about 22.5% o'clock (relatively: air has about 23.2% oxygen concentration), and discharged nitrous oxides can reach about 30% degree and reduce.
The importantly reduction of combustion temperature for the minimizing of discharged nitrous oxides.Except above-mentioned waste gas cooled recirculation, this can for example realize by the humidification (Befeuchtung) of pressurized air equally, for example described in file EP 1386069B1 like that.Utilize so-called HAM (Humid Air Motor, wet air motor) method, the pressurized air of diesel engine is more being burnt in the malaria in internal-combustion engine by humidification and fuel.By this way, than traditional pressurized air, discharged nitrous oxides can reach about 50% and the degree of Geng Gao and being reduced in theory, yet moist pressurized air has negative effect to the power capacity of large-scale diesel engine.
Summary of the invention
The objective of the invention is, create a kind of internal-combustion engine of the discharged nitrous oxides that has (zweistufiger) supercharging (Aufladung) of two-stage and reduce to some extent through improving.
The internal-combustion engine of the feature of this purpose by having claim 1 is realized.Favourable design proposal of the present invention and improvement project illustrate in the dependent claims.
Internal-combustion engine of the present invention has two exhaust-gas turbochargers of serial connection, and it respectively is included in exhaust turbine (Abgasturbine) and the compressor in air inlet side (Ansaugtrakt) in the exhaust pipe.In addition, be provided with and from exhaust pipe, branch out and between the compressor of two exhaust-gas turbochargers, lead to the exhaust gas recirculation pipeline in the air inlet side in exhaust turbine upstream and be used for the exhaust flow that is recycled to the air inlet side by the exhaust gas recirculation pipeline is cooled off equipment with humidification near (motornahen) exhaust-gas turbocharger of motor.
In internal-combustion engine, be provided with the exhaust gas recirculation pipeline and be used for being recycled to the cooling of exhaust flow of air inlet side and the equipment of humidification by this exhaust gas recirculation pipeline according to the supercharging that has a two-stage of the present invention.By this structure, the combustion temperature in the cylinder of internal-combustion engine is lowered by two kinds measure: the on the one hand minimizing by oxygen supply (owing to be recycled in the air inlet side the exhaust flow that is cooled) and the humidification (because humidification of the exhaust flow that is recycled) by combustion air on the other hand.As the result of the combustion temperature that obviously is lowered in this mode, discharged nitrous oxides can be reduced significantly.
In addition, the exhaust gas recirculation pipeline leads in the air inlet side between two compressors of exhaust-gas turbocharger, thereby pressurized air is compressed in the compressor of the exhaust-gas turbocharger of close motor once more with the exhaust flow that is recycled.In this mode, in the large-scale diesel engine that has very good pressurization system efficient, can continue to use the big positive scavenging pressure reduction of internal-combustion engine equally.
In a kind of form of implementation of the present invention, the cooling of the exhaust flow that is used to be recycled and the equipment of humidification have waste gas washing machine (Abgaswaescher), and it is arranged in the exhaust gas recirculation pipeline.Employed waste gas washing machine is removed (entziehen) most of and most oxysulfide and metallic oxide from the ash of burned lubricant oil and fuel from the exhaust flow that is recycled.Therefore, pollution tendency in the air inlet side and the corrosion danger that is caused by the waste gas that is recycled can be reduced.Simultaneously, the waste gas washing machine has caused the cooling of the exhaust flow that is recycled, thereby can save the AGR cooler (AGR-Kuehler) of the common sensitive to pollution in the exhaust gas recirculation pipeline.In addition, the waste gas washing machine has caused the humidification of the exhaust flow that is recycled, and this discharged nitrous oxides for internal-combustion engine produces favorable influence.
Alternatively or extraly, the cooling of the exhaust flow that is used for being recycled and the equipment of humidification have the humidification device that is arranged in the air inlet side.In this case, the exhaust gas recirculation pipeline preferably leads in this humidification device.In addition, this humidification device for example is the humidification device according to HAM (Humid Air Motor) method or SAM (Scavenging Air Moistening, scavenging air humidification) method.This humidification device also causes the removal from the waste gas that is recycled of the cooling of these two kinds of streams and oxysulfide except the humidification that causes the charge air flow that comprises the exhaust flow that is recycled.
In another design proposal of the present invention, the exhaust turbine of the exhaust-gas turbocharger of close motor is configured to have the high pressure turbine of variable cross section (variablen Querschnitten).
In another design proposal of the present invention, be provided with turbosupercharger bypass tube (Turbolader-Bypassleitung), its exhaust turbine upstream at the exhaust-gas turbocharger of close motor branches out from exhaust pipe and leads in the exhaust pipe again between the exhaust turbine of two exhaust-gas turbochargers.
In particular, the present invention can be employed in the large-scale diesel engine that utilizes heavy oil to move in an advantageous manner.
Description of drawings
The present invention above-mentioned and other feature and advantage from the description of following preferred embodiment according to appended drawing, can be understood better.Wherein:
Fig. 1 has shown the schematic representation according to the internal-combustion engine of the first embodiment of the present invention; With
Fig. 2 has shown the schematic representation of internal-combustion engine according to a second embodiment of the present invention.
List of reference characters
10 internal-combustion engines
12 banks of cylinder (Zylinderreihe)
14 pressurized air house stewards (Ladeluftsammelleitung)
16 waste gas headers (Abgassammelleitung)
18 air inlet sides
20 22 compressor
22 (motorferner) exhaust-gas turbochargers away from motor
24 26 compressor
26 exhaust-gas turbochargers near motor
28 first charger-air coolers
29 first humidification device
30 second charger-air coolers
31 second humidification device
32 exhaust pipes
34 22 exhaust turbine
36 26 exhaust turbine
38 bypass tubes
39 bypass valve
40 exhaust gas recirculation pipelines (AGR)
42 AGR-valves
44 waste gas washing machines
Embodiment
Further described first embodiment of the internal-combustion engine of the present invention of the supercharging that has two-stage with reference to figure 1.
Internal-combustion engine 10 is own, especially the large-scale diesel engine that utilizes heavy oil to move, comprise bank of cylinder 12 in known manner, the waste gas header 16 of the waste gas that it produces when having the cylinder of a plurality of burnings that are used for fuel and carrying the pressurized air house steward 14 of combustion air and being used on the outlet side of bank of cylinder 12 to draw burning in being used on the input side of bank of cylinder 12.
In the air inlet side 18 of the internal-combustion engine 10 that leads to pressurized air house steward 14, be furnished with the supercharging that has constituted this two-stage low pressure stage away from first compressor 20 of the exhaust-gas turbocharger 22 of motor with second compressor 24 of exhaust-gas turbocharger 26 of close motor of high pressure stage that is used to suck and compresses ambient air and be furnished with the supercharging that has constituted this two-stage to be used for further compressing this pressurized air.In air inlet side 18, first charger-air cooler 28 is arranged, and in air inlet side 18, second charger-air cooler 30 is arranged in second compressor, 24 arranged downstream in first compressor, 20 arranged downstream.
By exhaust pipe 32, waste gas is flowed to the exhausted gas post-processing system (not shown) that has filter, catalyzer and fellow by the waste gas header 16 from internal-combustion engine 10.In exhaust pipe 32, be furnished with away from first exhaust turbine (low-pressure turbine) 34 of the exhaust-gas turbocharger 22 of motor with near second exhaust turbine (high pressure turbine) 36 of the exhaust-gas turbocharger 26 of motor.At first acting in high pressure turbine 36 of exhaust flow is so that drive coupled compressor 24 in known manner.In low-pressure turbine 34, exhaust flow does work once more and drives first compressor 20 in the air inlet side 18 of coupled internal-combustion engine 10 thus.
The high pressure turbine 36 of the exhaust-gas turbocharger 26 of close motor preferably is configured to have variable cross section (VTA-Variable Turbine Area).Alternatively or extraly, be provided with the turbosupercharger bypass tube 38 that has the controlled bypass valve 39 of mode that can be variable.This bypass tube 38 branches out and is being passed into again in the exhaust pipe 32 between two exhaust turbines 34,36 from exhaust pipe 32 in exhaust turbine 36 upstreams of the exhaust-gas turbocharger 26 of close motor.
As shown in FIG. 1, also be provided with exhaust gas recirculation pipeline 40.This exhaust gas recirculation pipeline 40 branches out (the some B Fig. 1) in second exhaust turbine, 36 upstreams near the exhaust-gas turbocharger 26 of motor from exhaust pipe 32 equally, but, at two exhaust- gas turbochargers 22,26 compressor 20, between 24, preferably, be passed into (the some A among Fig. 1) in the air inlet side 18 in first charger-air cooler, 28 downstreams.
In exhaust gas recirculation pipeline 40, be furnished with the AGR valve 42 and the so-called waste gas washing machine 44 that are used for to the control of the ER EGR Rate of air inlet side 18.AGR valve 42 can be alternatively in waste gas washing machine 44 upstreams or arranged downstream in exhaust gas recirculation pipeline 40.
In waste gas washing machine 44, from exhaust flow, remove nearly all acid ingredient that can for example be derived from fuel sulfur (Kraftstoffschwefel).The major part of particulate is removed from waste gas in waste gas washing machine 44 equally.Simultaneously,, with before pressurized air mixes in air inlet side 18 waste gas is cooled off and humidification at waste gas.By waste gas washing machine 44 and the exhaust gas recirculation in the exhaust gas recirculation pipeline 40, can obviously reduce the discharged nitrous oxides of the internal-combustion engine 10 of this two-stage ground supercharging.
At B place, the position of exhaust pipe 32, just the exhaust gas pressure at the point of branching place of exhaust gas recirculation pipeline 40 is higher than the charge-air pressure at A place, the position of air inlet side 18.In contrast, the charge-air pressure at the C place, position of the air inlet side 18 in compressor 24 downstreams of high pressure stage 26 is higher than the exhaust gas pressure at A place, position, thereby, can set or keep positive scavenging pressure reduction by internal-combustion engine 10, this is favourable in the large-scale diesel engine that utilizes heavy oil to move especially.
Now, further describe second embodiment of the internal-combustion engine of the present invention of the supercharging that has two-stage with reference to Fig. 2.At this, same or similar parts come mark with the member utilization as the identical reference number in above-mentioned first embodiment.
Second embodiment's the internal-combustion engine and the difference of the internal-combustion engine shown in Fig. 1 are, away from motor and/or near two charger-air coolers 28 in compressor 20,24 downstreams of the exhaust- gas turbocharger 22,26 of motor, 30 are respectively replaced by the humidification device in the air inlet side 18 29,31. Humidification device 29,31 are preferably such humidification device, promptly, it is according to HAM (HumidAir Motor) or SAM (Scavenging Air Moistening) method work, to be used for, so that the combustion temperature in the cylinder 12 of reduction internal-combustion engine 10 also reduces discharged nitrous oxides thus with pressurized air cooling and humidification.At this, humidification device 29,31 has been finished first embodiment's waste gas washing machine 44 and task charger-air cooler 28,30.
In a kind of modification of this form of implementation, replace second humidification device 31, can have common equally in compressor 24 arranged downstream near the exhaust-gas turbocharger 26 of motor as the charger-air cooler 30 among first embodiment at Fig. 1.
Go out as shown in FIG. 2, the exhaust gas recirculation pipeline 40 that branches out from exhaust pipe 32 in high pressure turbine 36 upstreams equally directly leads in first humidification device 29 in this embodiment, thereby the exhaust flow that is recycled by exhaust gas recirculation pipeline 40 is cooled and humidification equally.
Except humidification device 29, extraly, waste gas washing machine 44 can be arranged alternatively equally in this embodiment in exhaust gas recirculation pipeline 40, as shown in FIG. 2.But, compare with the embodiment of top Fig. 1, these waste gas washing machine 44 sizes can be given less.
Remaining parts of this embodiment, feature and advantage conform to first embodiment's of Fig. 1 parts, feature and advantage, therefore, save its description again.
Claims (8)
1. internal-combustion engine has two exhaust-gas turbochargers (22,26) of serial connection, described exhaust-gas turbocharger (22,26) respectively is included in exhaust turbine (34,36) and the compressor (20 in air inlet side (18) in the exhaust pipe (32), 24), it is characterized in that
Be provided with exhaust gas recirculation pipeline (40), it branches out from described exhaust pipe (32) in exhaust turbine (36) upstream near the exhaust-gas turbocharger (26) of motor and at described two exhaust-gas turbochargers (22,26) lead in the described air inlet side (18) between the compressor (20,24); And,
Be provided with and be used for being recycled to the cooling of exhaust flow of described air inlet side (18) and the equipment (29,44) of humidification by described exhaust gas recirculation pipeline (40).
2. internal-combustion engine according to claim 1 is characterized in that, is used for the cooling of the described exhaust flow that is recycled and the equipment of humidification (29,44) and has the waste gas washing machine (44) that is arranged in the described exhaust gas recirculation pipeline (40).
3. internal-combustion engine according to claim 1 and 2 is characterized in that, is used for the cooling of the described exhaust flow that is recycled and the equipment of humidification (29,44) and has the humidification device (29) that is arranged in the described air inlet side (18).
4. internal-combustion engine according to claim 3 is characterized in that, described exhaust gas recirculation pipeline (40) leads in the described humidification device (29).
5. according to claim 3 or 4 described internal-combustion engines, it is characterized in that described humidification device (29) is the humidification device according to HAM method or SAM method.
6. according to each described internal-combustion engine in the aforementioned claim, it is characterized in that the exhaust turbine (36) of the exhaust-gas turbocharger (26) of described close motor is configured to have the high pressure turbine of variable cross section.
7. according to each described internal-combustion engine in the aforementioned claim, it is characterized in that, be provided with turbosupercharger bypass tube (38), it branches out and at described two exhaust-gas turbochargers (22 from described exhaust pipe (32) in exhaust turbine (36) upstream of described exhaust-gas turbocharger (26) near motor, 26) lead to again between the exhaust turbine (34,36) in the described exhaust pipe (32).
8. according to each described internal-combustion engine in the aforementioned claim, it is characterized in that described internal-combustion engine (10) is the large-scale diesel engine that utilizes heavy oil to move.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008061399.1 | 2008-12-10 | ||
| DE102008061399A DE102008061399A1 (en) | 2008-12-10 | 2008-12-10 | Internal combustion engine with two exhaust gas turbochargers connected in series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101749148A true CN101749148A (en) | 2010-06-23 |
Family
ID=41263502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910260812A Pending CN101749148A (en) | 2008-12-10 | 2009-12-10 | Internal combustion engine with two exhaust gas turbochargers connected in series |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2010138892A (en) |
| KR (1) | KR20100067030A (en) |
| CN (1) | CN101749148A (en) |
| DE (1) | DE102008061399A1 (en) |
| FI (1) | FI123593B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210201A (en) * | 2010-11-09 | 2013-07-17 | 三菱重工业株式会社 | Engine exhaust gas purification device |
| CN110118142A (en) * | 2019-05-05 | 2019-08-13 | 天津大学 | A kind of high pressure exhaust gas medium voltage side introducing system based on two-stage turbocharger |
| CN114207258A (en) * | 2019-07-23 | 2022-03-18 | Avl李斯特有限公司 | Method for operating an internal combustion engine |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI124087B (en) * | 2010-05-12 | 2014-03-14 | Wärtsilä Finland Oy | Arrangement and procedure for exhaust gas recirculation and turbocharging |
| JP2012136957A (en) * | 2010-12-24 | 2012-07-19 | Isuzu Motors Ltd | Internal combustion engine and egr method therefor |
| DE102012209286A1 (en) | 2012-06-01 | 2013-12-05 | Man Diesel & Turbo Se | Internal combustion engine with exhaust charging and exhaust gas recirculation |
| CN104074636B (en) * | 2013-12-23 | 2016-05-04 | 哈尔滨工程大学 | There is the diesel engine EGR system of humidification effect |
| DE102014111835B4 (en) | 2014-08-19 | 2017-08-31 | Gardner Denver Deutschland Gmbh | Compressor unit and method for its operation |
| DE102018123871A1 (en) * | 2018-09-27 | 2020-04-02 | Volkswagen Aktiengesellschaft | Multi-stage supercharged internal combustion engine with liquid injection into the fresh gas line between two compressors |
| WO2024063685A1 (en) * | 2022-09-19 | 2024-03-28 | Cetech Ab | An exhaust recirculation device for a 4-stroke compression ignition engine |
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| DK170218B1 (en) * | 1993-06-04 | 1995-06-26 | Man B & W Diesel Gmbh | Large pressurized diesel engine |
| JP2002332919A (en) * | 2001-02-26 | 2002-11-22 | Mitsubishi Heavy Ind Ltd | Exhaust gas recirculation system |
| FI114112B (en) | 2001-03-14 | 2004-08-13 | Marioff Corp Oy | Method for Purifying Exhaust Gas from Internal Combustion Engine and Applying Damp Air to Internal Combustion Engine |
| DE102004009794A1 (en) | 2004-02-28 | 2005-09-22 | Daimlerchrysler Ag | Internal combustion engine with two exhaust gas turbochargers |
| JP4692202B2 (en) * | 2005-10-06 | 2011-06-01 | いすゞ自動車株式会社 | EGR system for two-stage supercharged engine |
| DE102006048269B4 (en) | 2006-10-12 | 2012-10-04 | Man Diesel & Turbo Se | Method for operating an internal combustion engine with exhaust gas recirculation and internal combustion engine |
-
2008
- 2008-12-10 DE DE102008061399A patent/DE102008061399A1/en not_active Withdrawn
-
2009
- 2009-08-14 KR KR1020090075181A patent/KR20100067030A/en not_active Application Discontinuation
- 2009-08-20 JP JP2009190870A patent/JP2010138892A/en active Pending
- 2009-10-22 FI FI20096087A patent/FI123593B/en not_active IP Right Cessation
- 2009-12-10 CN CN200910260812A patent/CN101749148A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210201A (en) * | 2010-11-09 | 2013-07-17 | 三菱重工业株式会社 | Engine exhaust gas purification device |
| CN103210201B (en) * | 2010-11-09 | 2016-03-23 | 三菱重工业株式会社 | Engine exhaust gas purification device |
| CN110118142A (en) * | 2019-05-05 | 2019-08-13 | 天津大学 | A kind of high pressure exhaust gas medium voltage side introducing system based on two-stage turbocharger |
| CN114207258A (en) * | 2019-07-23 | 2022-03-18 | Avl李斯特有限公司 | Method for operating an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| FI123593B (en) | 2013-07-31 |
| FI20096087A (en) | 2010-06-11 |
| JP2010138892A (en) | 2010-06-24 |
| FI20096087A0 (en) | 2009-10-22 |
| DE102008061399A1 (en) | 2010-06-17 |
| KR20100067030A (en) | 2010-06-18 |
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Application publication date: 20100623 |