CN101858240A - Large two-stroke diesel engine with exhaust gas scrubber - Google Patents
Large two-stroke diesel engine with exhaust gas scrubber Download PDFInfo
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- CN101858240A CN101858240A CN201010133220A CN201010133220A CN101858240A CN 101858240 A CN101858240 A CN 101858240A CN 201010133220 A CN201010133220 A CN 201010133220A CN 201010133220 A CN201010133220 A CN 201010133220A CN 101858240 A CN101858240 A CN 101858240A
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- Prior art keywords
- waste
- salinity
- fresh water
- scavenging
- washing machine
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
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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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
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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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a large two-stroke diesel engine with an exhaust gas scrubber, wherein the water with high salinity is pumped to the exhaust gas scrubber for generating spray. The exhaust gas passes through the spray for reducing the content of SO2. The engine is also provided with a scavenging humidifying unit which is operated by sea water and/or a fresh water generator that converts sea water to fresh water. The high salinity waste water of the scavenging humidifying unit and/or the fresh water generator is used for the exhaust gas scrubber. Compared with the common sea water, the high salinity of the waste water increases the efficiency of the scrubber. Therefore, a considerably large pumping workload required for keeping the operation of scrubber can be remarkably reduced.
Description
Technical field
The present invention relates to a kind of SO that is used to reduce waste gas that is equipped with
2The large-sized diesel motor of the heavy fuel operation of the exhaust scrubber of content, for example master motor of seagoing vessel.
Background technique
The overall cognition of environmental problem increases fast.In IMO (International Maritime Organization), exist continual discussion about the emission limit set of the atmospheric pollution form at sea.The authorities of different regions, the world have taked similar measure.For example current proposed EPA (EPA) regulations of discussing.
Yet owing to the cost reason, large-sized two-stroke diesel engine utilizes heavy oil usually, and---fuel that Sulpher content is higher relatively---is operated.Therefore, the SO of waste gas
2Content is also corresponding higher.A kind of known being used for reduces the SO of waste gas
2The method of level is to use exhaust scrubber, and exhaust scrubber produces brine spray, and waste gas is through this brine spray.SO in the waste gas
2Molecule combines with basic ion in the salt solution drop.The efficient of washing machine depends on that pumping passes through the water yield of washing machine and the salinity of water (being basicity definitely).On seagoing vessel, seawater is the most conspicuous selection as saline source.Yet, the seawater pumping of about 4kg need be passed through exhaust scrubber for every kilogram of waste gas, so that reach optimum efficiency.Large-sized two-stroke diesel engine per hour can produce the waste gas up to 500,000 tons, and this means needs 2,000, and exhaust scrubber is passed through in 000 ton seawater pumping.Required energy total amount is very large for the exhaust scrubber (position at waste gas place) that the seawater of quantity like this upwards is pumped to the top that is positioned at ship, and for the specific fuel consumption measurer significant negative effect is arranged.
Summary of the invention
Under this background, the purpose of this invention is to provide a kind of have be used for utilizing less energy to remove SO from waste gas
2The large-sized two-stroke diesel engine of system.
This purpose realizes that by the large-sized two-stroke diesel engine that the operation of a kind of heavy fuel is provided it comprises: be used for scavenging is supplied to the turbosupercharger of cylinder, it has exhaust-driven turbine and by turbo-driven compressor; Be positioned at the scavenging humidifying unit of the seawater operation in compressor downstream, described scavenging humidifying unit has import that is used for seawater and the outlet that is used for backwater; Be positioned at the waste-gas cleaning washing machine of salt solution operation that having of turbine downstream is used for the import of salt solution, described waste-gas cleaning washing machine produces brine spray, and waste gas is through this brine spray, in order to reduce the SO of waste gas
2Content; And pipeline, its backwater from scavenging humidifying unit is guided to the import of waste-gas cleaning washing machine.
Compare the backwater that has than high salinity by utilizing with the salinity of seawater, also reduced in order to reach the SO in the waste gas from scavenging humidifying unit
2The required water yield of given reduction of level.Usually, the salinity from the water in the scavenging humidifying unit is the twice of the salinity of seawater.Therefore, need pumping can reduce by half basically by the water yield of waste-gas cleaning washing machine.
The waste-gas cleaning washing machine can comprise brine circulation system.
Salinity from the backwater of air wetting unit is higher than the salinity that is introduced to the seawater in the air wetting unit basically.Preferably, the salinity from the backwater of air wetting unit is the twice that is introduced to the salinity of the seawater in the air wetting unit at least.
Above-mentioned purpose also can realize that it comprises by the large-sized two-stroke diesel engine that the operation of a kind of heavy fuel is provided: be used for scavenging is supplied to the turbosupercharger of cylinder, it has exhaust-driven turbine and by turbo-driven compressor; The import that provides the fresh water generator of power, described fresh water generator to have to be used for seawater by the used heat of motor, the outlet that is used for the outlet of the fresh water that produced and is used to have the waste water of high salinity; Be positioned at the waste-gas cleaning washing machine of salt solution operation that having of turbine downstream is used for the import of salt solution, described waste-gas cleaning washing machine produces brine spray, and waste gas is through this brine spray, in order to reduce the SO of waste gas
2Content; And pipeline, it will guide to the import of waste-gas cleaning washing machine from the waste water of fresh water generator.
The waste-gas cleaning washing machine can comprise brine circulation system.
Salinity from the waste water of fresh water generator is higher than the salinity that is introduced to the seawater in the air fresh water generator basically.Preferably, the salinity from the waste water of fresh water generator is the twice that is introduced to the salinity of the seawater in the fresh water generator at least.
Above-mentioned purpose can also realize by a kind of method that is used to operate the exhaust scrubber of large-sized two-stroke diesel engine is provided, and described method comprises from the scavenging humidifying unit of motor or from the step of the waste water of the fresh water generator of motor to exhaust scrubber.
Other purpose, feature, advantage and characteristic according to motor of the present invention and method will become obvious from detailed description.
Description of drawings
In the detailed description part of this specification below, the illustrative embodiments shown in is explained the present invention in further detail with reference to the accompanying drawings, wherein:
Fig. 1 is the diagram according to the intake and exhaust system of the explosive motor of first embodiment of the invention, and
Fig. 2 is the diagram according to the intake and exhaust system of the explosive motor of second embodiment of the invention.
Embodiment
In the following detailed description, will the present invention be described by preferred implementation.Fig. 1 shows the diagram of representing the cross hair style large-sized turbo-charging two-stroke diesel engine 1 with intake and exhaust system.Motor 1 has pressurized air receiver 2 and waste gas receiver 3.The outlet valve that belongs to the firing chamber is pointed out by 4.For example, motor 1 can be as the master motor in the seagoing vessel or with acting on the stationary engine of operating the generator in the power station.Total output of motor can be for example 5,000 to 110, the scope of 000kw.Motor 1 is by heavy oil operation, therefore is provided with the heavy fuel oil system of the heavy oil pipe-line system (not shown) of the heavy fuel oil tank that comprises heating and heating.Because heavy oil is extremely glutinous at ambient temperature, therefore also the element of the need heating of these fuel injection systems is heated at the motor stopping period.In addition, heavy fuel oil system (not shown) is provided with the circulatory system, so that keep the flow through parts of heavy fuel oil system of heavy oil at the motor stopping period.Described circulation has guaranteed that the parts of the heating equipment that does not have own special use of heavy fuel oil system keep temperature and described circulation to promote the degasification of heavy fuel oil system at the motor stopping period.
Scavenging arrives the scavenging port (not shown) of each cylinder from scavenging receiver 2.When outlet valve 4 was opened, waste gas flow in the waste gas receiver 3 by first exhaust piping and flows to the turbine 7 of turbosupercharger 6 forward by first exhaust piping 5, and waste gas flows away by second exhaust piping 20 from this.Turbine 7 drives via suction port 10 compressed and supplied machines 9 by axle 8.Compressor 9 is transferred to the pressurized air pipeline 11 that leads to pressurized air receiver 2 with the pressurized air of pressurization.
Air inlet in the pipeline 11 is through humidifying unit 12, so that humidification pressurized air/scavenging---it leaves compressor with about 200 ℃---and the temperature of scavenging is reduced to level between 36 to 80 ℃.In this embodiment, humidifying unit 12 is washing machines, injects and evaporate a large amount of water in humidifying unit.The water that injects is preferably warmer relatively, for example, and by being used to waste heat seawater from (water) cooling system (not shown) of motor 1.Alternately, can use not pre-heated water.The level of resulting absolute water content will be lower than to a certain extent when warm seawater is transferred to scavenging humidifying unit 12.
In a preferred embodiment, humidifying unit is a washing machine 12, operates on it so that leave the air of humidifying unit outlet to have roughly 100% relative moisture and about 70 ℃ temperature.The absolute humidity of this pressurized air/scavenging is approximately higher than five times of scavenging of the interstage cooler that leaves conventional engines greatly.Therefore, compare with conventional engines (the not motor of humidifying air), significantly higher in scavenging and the energy size that in waste gas, comprised.Therefore, under the high load level, can from waste gas, extract more energy.High absolute water content in the scavenging has been guaranteed ebb combustion temperature and average combustion temperature, and has therefore reduced the NO in the combustion process
xGeneration.
Humidifying air arrives pressurized air trap 2 via the auxiliary blower 16 that drives by motor 17, and under the situation of low-load or sub load, auxiliary blower pressurizes to charge air flow.Under higher load, scavenging and auxiliary blower 16 that the compressor 9 of turbosupercharger transmits enough compressions are bypassed by one-way valve 15.
Controlled valve 19 is set in place in the exhaust piping 5 of turbine 7 upstreams.A part (near 10%) waste gas is walked around turbine 7 by controlled valve.Controlled valve 19 and controller 50 couplings connection.The operation of controller 50 control controlled valves 19, and control the exhausted air quantity that is divided to power turbine 31 thus.The energy that flows out by controlled valve 19 is reclaimed in power turbine 31 relatively effectively, therefore can realize higher overall fuel efficiency.
In mode of execution, power turbine 31 drives generator 32.Therefore dump energy in the exhaust flow is converted into electric power,, has the energy of high available energy (exergy) that is.
The scavenging humidifying unit 12 that is embodied as washing machine is provided with high pressure sea water by pipeline 21 and pump 22.Scavenging humidifying unit 12 is created in the high salinity waste water that leaves under the relatively high pressure.This waste water leaves scavenging humidifying unit 12 via the outlet of scavenging humidifying unit 12 and arrives pipeline 23.The import of waste-gas cleaning washing machine 24 guided to high salinity waste water by pipeline 23.
This waste-gas cleaning washing machine is arranged in second exhaust piping 20, thereby makes waste gas through waste-gas cleaning washing machine 24.This waste-gas cleaning washing machine 24 comprises salt water-flow circuit 27, and this circulation loop 27 comprises pump 28.Circulation loop 27 comprises valve 25, is used for controlling the amount of the highrank fuel salinity water that is introduced to circulation loop 27, and circulation loop 27 comprises valve 29, is used to control the amount from the employed salt solution of circulation loop 27 emptyings.Valve 25 and 29 is coupled to controller 50, and described valve is fed into the amount of the highrank fuel salinity water in the circulation loop 27 and the amount of discharging and be introduced to the waste water of waste pipe 26 from circulation loop 27 in order to adjusting.High salinity waste water from scavenging humidifying unit 12 arrives with relatively high pressure, and therefore can be introduced in the circulation loop 27 under the situation that need not other pump.
SO in the waste gas
2With the basic ion reaction in the highrank fuel salinity water that is injected into as spraying in the washing machine 24.Absorbed SO in highrank fuel salinity water
2Discharge via waste pipe 26.
Fig. 2 show with reference to the substantially the same another embodiment of the present invention of the described mode of execution of Fig. 1, except the motor according to second mode of execution is not provided with scavenging humidifying unit.On the contrary, high salinity waste water is to obtain from fresh water generator 43.Fresh water generator 43 is provided with seawater by pipeline 42 and pump 40.Seawater is guided in the import of fresh water generator 43 and seawater is evaporated in fresh water generator 43 and condense again by means of vacuum with from the used heat of motor 1.Therefore the fresh water that obtains is introduced to fresh water jar (not shown) via the pipeline 44 of the outlet that is connected in fresh water generator 43.Another outlet of fresh water generator is connected in waste-gas cleaning washing machine 24 via pipeline 23.The operation of waste-gas cleaning washing machine 24 in this embodiment is with identical with reference to the operation of the waste-gas cleaning in the described mode of execution of Fig. 1.
The present invention has lot of advantages.Different mode of executions or implementation can produce one or more following advantages.Should be pointed out that this is not an exhaustive list, but can have other advantage of not describing herein.An advantage of the present invention is that it allows to reduce greatly brine pump is delivered to the waste-gas cleaning washing machine---it is used to reduce the SO of the waste gas of large-sized two-stroke diesel engine
2Content---required energy size.
Employed in the claims term " comprises " does not get rid of other element or step.As employed term " " or " a kind of " do not get rid of a plurality of situations in the claims.
Should not regard as be restriction to protection domain to employed reference character in the claim.
Be considered to the feature of particular importance though highlighted of the present invention those in the specification in front; but should be understood that; special emphasizing no matter whether, the claimant is claimed anyly to obtain Patent right feature or preamble relates to and/or the combination of feature illustrated in the accompanying drawings.Should be pointed out that in addition those skilled in the art can make in the scope and spirit of retrofiting and/or improving and still being set forth on the equipment herein in as claims when considering the disclosure.
Claims (9)
1. the large-sized two-stroke diesel engine (1) of heavy fuel operation, it comprises:
Be used for scavenging is supplied to the turbosupercharger (6) of cylinder, described turbosupercharger has exhaust-driven turbine (7) and by described turbine (7) compressor driven (9);
Be positioned at the scavenging humidifying unit (12) of the seawater operation in described compressor (9) downstream, described scavenging humidifying unit (12) has import that is used for seawater and the outlet that is used for backwater;
Be positioned at the waste-gas cleaning washing machine (24) of the salt solution operation with the import that is used for salt solution in described turbine (7) downstream, described waste-gas cleaning washing machine (24) produces brine spray, and waste gas is through described brine spray, in order to reduce the SO of waste gas
2Content; And
Pipeline (23), described pipeline will be guided to the import of described waste-gas cleaning washing machine (22) from the backwater of described scavenging humidifying unit (12).
2. motor according to claim 1, wherein, described waste-gas cleaning washing machine (24) comprises brine circulation system (27,28).
3. motor according to claim 1 wherein, is higher than the salinity that is introduced to the seawater in the described air wetting unit (12) basically from the salinity of the backwater of described air wetting unit (12).
4. motor according to claim 1 wherein, is the twice that is introduced to the salinity of the seawater in the described air wetting unit (12) from the salinity of the backwater of described air wetting unit (12) at least.
5. the large-sized two-stroke diesel engine (1) of heavy fuel operation, it comprises:
Be used for scavenging is supplied to the turbosupercharger (6) of cylinder, described turbosupercharger has exhaust-driven turbine (7) and by described turbine (7) compressor driven (9);
The import that provides the fresh water generator (43) of power, described fresh water generator (43) to have to be used for seawater by the used heat of described motor (1), the outlet that is used for the outlet of the fresh water that produced and is used to have the waste water of high salinity;
Be positioned at the waste-gas cleaning washing machine (24) of the salt solution operation with the import that is used for salt solution in described turbine (7) downstream, described waste-gas cleaning washing machine (24) produces brine spray, and waste gas is through described brine spray, in order to reduce the SO of waste gas
2Content; And
Pipeline (23), described pipeline will be guided to the import of described waste-gas cleaning washing machine (22) from the waste water of described fresh water generator (44).
6. motor according to claim 5, wherein, described waste-gas cleaning washing machine (24) comprises brine circulation system (27,28).
7. motor according to claim 5 wherein, is higher than the salinity that is introduced to the seawater in the described air fresh water generator (44) basically from the salinity of the waste water of fresh water generator (44).
8. motor according to claim 2 wherein, is the twice that is introduced to the salinity of the seawater in the described fresh water generator (44) from the salinity of the waste water of described fresh water generator (44) at least.
9. method that is used to operate the exhaust scrubber (24) of large-sized two-stroke diesel engine (1), described method comprise and will use to the step of exhaust scrubber (23) from the scavenging humidifying unit (12) of described motor or from the waste water of the fresh water generator (43) of described motor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009089638A JP5044601B2 (en) | 2009-04-02 | 2009-04-02 | Large two-cycle diesel engine with exhaust gas scrubber |
JP2009-089638 | 2009-04-02 |
Publications (2)
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CN101858240A true CN101858240A (en) | 2010-10-13 |
CN101858240B CN101858240B (en) | 2012-09-05 |
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CN2010101332203A Active CN101858240B (en) | 2009-04-02 | 2010-03-12 | Large two-stroke diesel engine with exhaust gas scrubber |
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JP (1) | JP5044601B2 (en) |
KR (1) | KR101249655B1 (en) |
CN (1) | CN101858240B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103670670A (en) * | 2012-12-03 | 2014-03-26 | 曼柴油机欧洲股份公司曼柴油机德国分公司 | Turbocharged two stroke uniflow internal combustion engine with crossheads and turbine |
CN106593689A (en) * | 2016-11-09 | 2017-04-26 | 安徽启东热能科技有限公司 | Oil gas ship power system |
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JP5377532B2 (en) * | 2011-01-26 | 2013-12-25 | エムエーエヌ・ディーゼル・アンド・ターボ・フィリアル・アフ・エムエーエヌ・ディーゼル・アンド・ターボ・エスイー・ティスクランド | Large turbocharged diesel engine with energy recovery configuration |
US9068489B2 (en) * | 2011-03-28 | 2015-06-30 | Haldor Topsoe A/S | Process for the reduction of nitrogen oxides and sulphur oxides in the exhaust gas from internal combustion engine |
EP2574393A1 (en) * | 2011-09-30 | 2013-04-03 | Alfa Laval Aalborg A/S | Scrubber system and process |
KR20140073279A (en) * | 2012-12-06 | 2014-06-16 | (주)세움 | Exhausy gas purifying apparatus for a ship |
JP6122300B2 (en) * | 2013-01-18 | 2017-04-26 | 川崎重工業株式会社 | Engine system and ship |
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JP2004081933A (en) * | 2002-08-23 | 2004-03-18 | Mitsubishi Heavy Ind Ltd | Wastewater treatment equipment |
CN101338698A (en) * | 2007-07-02 | 2009-01-07 | 曼狄赛尔公司 | Humid air diesel motor |
CN101429891A (en) * | 2007-11-08 | 2009-05-13 | 通用电气公司 | System for reducing the sulfur oxides emissions generated by a turbomachine |
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JPS5511045A (en) * | 1978-07-11 | 1980-01-25 | Mitsubishi Heavy Ind Ltd | Exhaust gas processing method |
JP2003343272A (en) * | 2002-05-21 | 2003-12-03 | Man B & W Diesel As | Large internal combustion engine with supercharger |
JP2007263078A (en) * | 2006-03-29 | 2007-10-11 | Mitsubishi Heavy Ind Ltd | Emission gas treatment apparatus and method for marine vessel |
-
2009
- 2009-04-02 JP JP2009089638A patent/JP5044601B2/en active Active
-
2010
- 2010-03-12 CN CN2010101332203A patent/CN101858240B/en active Active
- 2010-03-19 KR KR1020100024785A patent/KR101249655B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004081933A (en) * | 2002-08-23 | 2004-03-18 | Mitsubishi Heavy Ind Ltd | Wastewater treatment equipment |
CN101338698A (en) * | 2007-07-02 | 2009-01-07 | 曼狄赛尔公司 | Humid air diesel motor |
CN101429891A (en) * | 2007-11-08 | 2009-05-13 | 通用电气公司 | System for reducing the sulfur oxides emissions generated by a turbomachine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103670670A (en) * | 2012-12-03 | 2014-03-26 | 曼柴油机欧洲股份公司曼柴油机德国分公司 | Turbocharged two stroke uniflow internal combustion engine with crossheads and turbine |
CN106593689A (en) * | 2016-11-09 | 2017-04-26 | 安徽启东热能科技有限公司 | Oil gas ship power system |
CN106593689B (en) * | 2016-11-09 | 2018-05-11 | 安徽启东热能科技有限公司 | A kind of oil combustion gas ship power system |
Also Published As
Publication number | Publication date |
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KR101249655B1 (en) | 2013-04-01 |
KR20100110262A (en) | 2010-10-12 |
CN101858240B (en) | 2012-09-05 |
JP2010242536A (en) | 2010-10-28 |
JP5044601B2 (en) | 2012-10-10 |
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Address after: Copenhagen, Denmark Patentee after: Mannone solutions (mannone solutions Germany) branch Address before: Copenhagen, Denmark Patentee before: Mann Diesel & Turbine, an associate company of Mann Diesel & Turbine Europe AG |