CN115434833B - Novel cooling water system of EGR host computer - Google Patents
Novel cooling water system of EGR host computer Download PDFInfo
- Publication number
- CN115434833B CN115434833B CN202211208821.5A CN202211208821A CN115434833B CN 115434833 B CN115434833 B CN 115434833B CN 202211208821 A CN202211208821 A CN 202211208821A CN 115434833 B CN115434833 B CN 115434833B
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- egr
- fresh water
- cooler
- cooling
- seawater
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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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/24—Layout, e.g. schematics with two or more coolers
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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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
-
- 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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/32—Liquid-cooled heat exchangers
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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 Circulating Devices (AREA)
Abstract
The invention discloses a novel cooling water system of an EGR host, which comprises an EGR fresh water cooling system, a fresh water cooling system and a seawater cooling system. The EGR fresh water cooling system is connected with the fresh water cooling system through a stop valve, and the EGR fresh water cooler is used as a standby of the auxiliary fresh water cooler. The seawater cooling system is divided into two schemes according to whether the flow of the main seawater cooling pump is increased after the addition of the EGR seawater for cooling, and when the scheme 1 is that the main seawater cooling pump needs to span gears, an EGR seawater cooling pump is arranged for the EGR fresh water cooler, and the main seawater cooling pump is used as an EGR seawater cooling pump for standby through a stop valve; and in the scheme 2, when the main seawater cooling pump does not need to span gears, the EGR fresh water cooler is integrated into the cylinder sleeve water cooler, and the main seawater cooling pump supplies energy. The invention is approved by related class agencies, reduces the influence on a cooling water system after the conventional ship-type main engine such as a bulk carrier is assembled with the EGR, simplifies cabin arrangement, and saves the construction cost of shipyards.
Description
Technical Field
The invention belongs to the field of ship construction and ship design, and particularly relates to a cooling water system of a novel EGR host.
Background
Ocean vessel transportation is the most important means of world transportation industry, and with the rapid growth of world economic trade, the problem of emission pollution is more and more serious. Currently host patent manufacturers MAN divide NOx emission control technologies into Selective Catalytic Reduction (SCR) and Exhaust Gas Recirculation (EGR). The EGR system reduces NOx production by cooling and purging a portion of the exhaust gas to replace a portion of the scavenging gas, thereby reducing the oxygen content in the scavenging gas and increasing the heat capacity, thereby reducing the maximum combustion temperature in the cylinder.
Since the EGR system can only use fresh water for cooling, the EGR system has a great influence on a bulk carrier or the like conventionally using a seawater cooling system. Two solutions are generally adopted, the first way is to open up a separate EGR fresh water cooling circuit in the seawater cooling system, and the second way is to use a central cooling water system for the whole ship. The second way is to use the bulk carrier or other conventional ship type with a huge cost change and is not generally used. How to reduce the impact of the first approach is therefore critical to the effects of shipyard design changes, cabin layout and cost changes.
Disclosure of Invention
The invention aims to: in order to solve the defects of the prior method, the invention provides a novel cooling water system of an EGR host machine, which simplifies the cooling water system with the EGR host machine, and simplifies cabin arrangement, reduces pipeline complexity and reduces ship construction cost while meeting the requirement of host patent manufacturer MAN on cooling water inlet temperature of an EGR air cooler.
The technical scheme is as follows: a cooling water system of a novel EGR host comprises a host EGR fresh water cooling system, a fresh water cooling system and a seawater cooling system; the host EGR fresh water cooling system is connected with the fresh water cooling system through a stop valve; the seawater cooling system is in heat exchange with the host EGR fresh water cooling system and the fresh water cooling system through the EGR fresh water cooler and the auxiliary fresh water cooler respectively;
the host EGR fresh water cooling system comprises a host EGR air cooler, an EGR fresh water cooling pump and an EGR fresh water cooler, wherein the host EGR cooler and the EGR fresh water cooling pump are connected with the EGR fresh water cooler in series; the fresh water expansion water tank supplements fresh water for the host EGR fresh water cooling system; the EGR fresh water cooler cools circulating fresh water in the EGR fresh water cooling loop through high-temperature heat exchange; the EGR fresh water cooling pump supplies energy to the whole EGR fresh water cooling circulation pipeline;
the fresh water cooling system comprises an auxiliary fresh water cooler, a three-way temperature control valve and a generator internal cooler; the design of the traditional two auxiliary fresh water coolers is canceled, only one auxiliary fresh water cooler is provided, and the EGR fresh water cooler is used as the auxiliary fresh water cooler for standby through a stop valve; the fresh water expansion water tank supplements fresh water for the fresh water cooling system; the three-way temperature control valve is set at 38 ℃, fresh water passing through the internal cooler of the generator is mixed with fresh water passing through the auxiliary fresh water cooler, and the temperature of the cooling water at the inlet of the generator is kept at 38 ℃;
the seawater cooling system comprises a high-level sea chest, a low-level sea chest, a main seawater cooling pump, a main engine oil cooler, a main engine air cooler, a cylinder sleeve water cooler, other seawater cooling equipment, an EGR seawater cooling pump and a stop valve 2; the main seawater cooling pump pumps water from the high-level sea chest and the low-level sea chest to supply energy to the seawater cooling system; the engine oil cooler is arranged in front of the engine air cooler, and the engine oil cooler is connected with the engine air cooler in series; the cylinder sleeve water cooler, the EGR fresh water cooler, the auxiliary fresh water cooler, other seawater cooling equipment, the main engine lubricating oil cooler and the main engine air cooler which are connected in series are connected in parallel, and cooled seawater is directly discharged out of the outboard.
As an optimization: the seawater cooling system has two schemes, namely, the scheme 1 and the scheme 2 according to the problem of whether a main seawater cooling pump is selected to span gears after the EGR fresh water cooler is added.
As an optimization: in the scheme 1, a special EGR seawater cooling pump is arranged for the EGR fresh water cooler, and the main seawater cooling pump is used as a standby of the EGR seawater cooling pump through a stop valve 2.
As an optimization: in the scheme 1, an EGR seawater cooling pump is connected with a main seawater cooling pump in parallel through a stop valve, and the main seawater cooling pump is used for standby by using the capacity of a single main seawater cooling pump which is larger than that of the EGR seawater cooling pump; under normal operation condition, the stop valve 2 is in a closed state, when the EGR seawater cooling pump fails, the stop valve 2 is opened, and the main seawater cooling pump supplies energy to the EGR seawater cooling pipeline.
As an optimization: in the scheme 2, in order to properly increase the flow of the main seawater cooling pump, an EGR fresh water cooler is integrated into a cylinder sleeve water cooler and a main engine oil cooler and a main engine air cooler pipeline which are connected in series.
As an optimization: the EGR fresh water cooler in the scheme 2 is integrated into the main sea water cooling loop, the main sea water cooling pump is unchanged in selection, a special EGR sea water cooling pump is not required to be arranged, the construction cost of a shipyard is saved, and a cooling water pipeline is simplified.
As an optimization: the main seawater cooling pump in the host EGR fresh water cooling system adopts a variable frequency pump.
As an optimization: the stop valve in the host EGR fresh water cooling system is in a closed state under the normal operation working condition, and when the auxiliary fresh water cooler fails, the stop valve is opened, and the EGR fresh water cooler is connected to the fresh water cooling system to cool the generator and other equipment.
The beneficial effects are that: the invention fully utilizes the capacity of the EGR fresh water cooler to be larger than that of the auxiliary fresh water cooler, and takes the EGR fresh water cooler as the auxiliary fresh water cooler for standby. The design scheme has been accepted by related class agencies, and compared with the traditional central cooling water system, the invention saves an auxiliary fresh water cooler, and saves the construction cost of shipyards and the cabin arrangement space.
The invention reasonably considers the problem of whether the main seawater cooling pump is selected to span gears after the EGR seawater cooling pipeline is added, and provides the two seawater cooling systems of the scheme 1 and the scheme 2.
The invention is characterized in that the capacity of the EGR fresh water cooler is larger than that of the auxiliary fresh water cooler, the EGR fresh water cooler is used as the standby of the auxiliary fresh water cooler through the stop valve, the design of 2 to 3 auxiliary fresh water coolers in the traditional way is omitted, and when the auxiliary fresh water cooler has a problem, the large-capacity EGR fresh water cooler can cool the generator system.
Meanwhile, according to whether the main seawater cooling pump is selected to span gears after the EGR fresh water cooler is added in the seawater cooling system, two seawater cooling system schemes can be selected. If the main seawater cooling pump is selected to span the gear after the EGR fresh water cooler is added, the seawater cooling system in the scheme 1 is selected, a special EGR seawater pump is provided for the EGR fresh water cooling pump, and the main seawater cooling pump is used as a standby EGR seawater pump through the stop valve 2. If the main seawater cooling pump is not changed after the EGR fresh water cooler is added, the EGR fresh water cooler is integrated into a main seawater cooling pipeline, and the main seawater cooling pump is used for supplying energy to the EGR fresh water cooler.
Drawings
FIG. 1 is a simplified system diagram of a fresh water cooling system of the present invention;
FIG. 2 is a simplified system diagram of a seawater cooling system scheme 1 of the present invention;
fig. 3 is a simplified system diagram of a seawater cooling system scheme 2 of the present invention.
Wherein: the device comprises a 1-fresh water expansion tank, a 2-main engine EGR cooler, a 3-EGR fresh water cooling pump, a 4-EGR fresh water cooler, a 5-stop valve, a 6-auxiliary fresh water cooler, a 7-three-way temperature control valve, an 8-generator internal cooler, a 9-high-position sea chest, a 10-low-position sea chest, a 11-main sea water cooling pump, a 12-main engine oil cooler, a 13-main engine air cooler, a 14-cylinder sleeve water cooler, 15-other sea water cooling equipment, a 16-EGR sea water cooling pump and a 17-stop valve 2.
Detailed Description
The following technical solutions in the embodiments of the present invention will be clearly and completely described so that those skilled in the art can better understand the advantages and features of the present invention, thereby making a clearer definition of the protection scope of the present invention. The described embodiments of the present invention are intended to be only a few, but not all embodiments of the present invention, and all other embodiments that may be made by one of ordinary skill in the art without inventive faculty are intended to be within the scope of the present invention.
Examples
As shown in fig. 1, a cooling water system of a novel EGR host comprises a host EGR fresh water cooling system, a fresh water cooling system and a seawater cooling system; the host EGR fresh water cooling system is connected with the fresh water cooling system through a stop valve 5; the seawater cooling system is respectively in heat exchange with the host EGR fresh water cooling system and the fresh water cooling system through the EGR fresh water cooler 4.
The host EGR fresh water cooling system comprises a host EGR air cooler 2, an EGR fresh water cooling pump 3 and an EGR fresh water cooler 4, wherein the host EGR cooler 2 and the EGR fresh water cooling pump 3 are connected with the EGR fresh water cooler 4 in series; the fresh water expansion tank 1 supplements fresh water for the host EGR fresh water cooling system; the EGR fresh water cooler 2 cools circulating fresh water in the EGR fresh water cooling loop through high-temperature heat exchange; the EGR fresh water cooling pump 3 supplies power to the whole EGR fresh water cooling circulation pipeline.
The fresh water cooling system comprises an auxiliary fresh water cooler 6, a three-way temperature control valve 7 and a generator internal cooler 8; the design of the traditional two auxiliary fresh water coolers 6 is canceled, only one auxiliary fresh water cooler 6 is provided, and the EGR fresh water cooler 4 is used as the auxiliary fresh water cooler 6 for standby through a stop valve; the fresh water expansion tank 1 supplements fresh water for the fresh water cooling system; the three-way temperature control valve 7 is set at 38 ℃, and fresh water passing through the generator internal cooler 8 is mixed with fresh water passing through the auxiliary fresh water cooler 6, so that the temperature of the cooling water at the inlet of the generator is kept at 38 ℃.
The seawater cooling system comprises a high-level sea chest 9, a low-level sea chest 10, a main seawater cooling pump 11, a main engine oil cooler 12, a main engine air cooler 13, a cylinder liner water cooler 14, other seawater cooling equipment 15, an EGR seawater cooling pump 16 and a stop valve 2 17; the main seawater cooling pump 11 pumps water from the high-level sea chest 9 and the low-level sea chest 10 to supply energy to the seawater cooling system; the engine oil cooler 12 is arranged in front of the engine air cooler 13, and the engine oil cooler 12 is connected with the engine air cooler 13 in series; the cylinder sleeve water cooler 14, the EGR fresh water cooler 4, the auxiliary fresh water cooler 6, other sea water cooling equipment 15, the main engine lubricating oil cooler 12 and the main engine air cooler 13 which are connected in series are connected in parallel, and the cooled sea water is directly discharged out of the outboard.
The seawater cooling system has two schemes, namely, the scheme 1 and the scheme 2 according to the problem of whether the main seawater cooling pump 11 is selected to span gears after the EGR fresh water cooler 4 is added.
In the scheme 1, a special EGR seawater cooling pump 16 is arranged for the EGR fresh water cooler 4, and the main seawater cooling pump 11 is used as a standby of the EGR seawater cooling pump 16 through a stop valve 2 17.
In the scheme 1, an EGR seawater cooling pump 16 is connected with a main seawater cooling pump 11 in parallel through a stop valve, and the single main seawater cooling pump 11 with the capacity larger than that of the EGR seawater cooling pump is used as the standby of the EGR seawater cooling pump 16; under normal operation condition, the stop valve 2 17 is in a closed state, when the EGR seawater cooling pump 16 fails, the stop valve 2 17 is opened, and the main seawater cooling pump 11 supplies energy to the EGR seawater cooling pipeline.
In the scheme 2, in order to properly increase the flow rate of the main sea water cooling pump 11, the EGR fresh water cooler 4 is integrated into a pipeline of a cylinder liner water cooler 14, a main engine oil cooler 12 and a main engine air cooler 13 which are connected in series.
In the scheme 2, the EGR fresh water cooler 4 is integrated into a main sea water cooling loop, the main sea water cooling pump 11 is unchanged in selection, a special EGR sea water cooling pump 16 is not required to be arranged, the construction cost of a shipyard is saved, and a cooling water pipeline is simplified.
In this embodiment, the main seawater cooling pump 11 in the host EGR fresh water cooling system adopts a variable frequency pump.
In this embodiment, the stop valve 5 in the host EGR fresh water cooling system is in a closed state under a normal operation condition, and when the auxiliary fresh water cooler 6 fails, the stop valve 5 is opened, and the EGR fresh water cooler 4 is connected to the fresh water cooling system to cool the generator and other devices.
The invention fully utilizes the capacity of the EGR fresh water cooler to be larger than that of the auxiliary fresh water cooler, and takes the EGR fresh water cooler as the auxiliary fresh water cooler for standby. The design scheme has been accepted by related class agencies, and compared with a traditional central cooling water system, the invention saves an auxiliary fresh water cooler, saves the design cost and the construction cost of shipyards, reduces the difficulty of cabin arrangement and saves the cabin arrangement space.
The invention reasonably considers the problem of whether the main seawater cooling pump is selected to span gears after the EGR seawater cooling pipeline is added, and provides the two seawater cooling systems of the scheme 1 and the scheme 2.
Claims (7)
1. A novel cooling water system of EGR host computer, its characterized in that: comprises a host EGR fresh water cooling system, a fresh water cooling system and a sea water cooling system; the host EGR fresh water cooling system is connected with the fresh water cooling system through a stop valve (5); the seawater cooling system is respectively in heat exchange with the host EGR fresh water cooling system and the fresh water cooling system through an EGR fresh water cooler (4);
the host EGR fresh water cooling system comprises a host EGR cooler (2), an EGR fresh water cooling pump (3) and an EGR fresh water cooler (4), wherein the host EGR cooler (2) and the EGR fresh water cooling pump (3) are connected with the EGR fresh water cooler (4) in series; the fresh water expansion tank (1) supplements fresh water for the host EGR fresh water cooling system; the EGR fresh water cooler (4) cools circulating fresh water in the EGR fresh water cooling loop through high-temperature heat exchange; the EGR fresh water cooling pump (3) supplies energy to the whole EGR fresh water cooling circulation pipeline;
the fresh water cooling system comprises an auxiliary fresh water cooler (6), a three-way temperature control valve (7) and a generator internal cooler (8); the design of the traditional two auxiliary fresh water coolers (6) is canceled, only one auxiliary fresh water cooler (6) is provided, the EGR fresh water cooler (4) is connected with the auxiliary fresh water cooler (6) through a stop valve (5), and the fresh water expansion tank (1) supplements fresh water for a fresh water cooling system; the three-way temperature control valve (7) is set at 38 ℃, fresh water passing through the generator internal cooler (8) is mixed with fresh water passing through the auxiliary fresh water cooler (6), and the temperature of the cooling water at the inlet of the generator is kept at 38 ℃;
the seawater cooling system comprises a high-level sea chest (9), a low-level sea chest (10), a main seawater cooling pump (11), a main engine oil cooler (12), a main engine air cooler (13), a cylinder liner water cooler (14), other seawater cooling equipment (15), an EGR seawater cooling pump (16) and a stop valve 2 (17); the main seawater cooling pump (11) pumps water from the high-level sea chest (9) and the low-level sea chest (10) to supply energy to the seawater cooling system; the engine oil cooler (12) is arranged in front of the engine air cooler (13), and the engine oil cooler (12) is connected with the engine air cooler (13) in series; the cylinder sleeve water cooler (14), the EGR fresh water cooler (4), the auxiliary fresh water cooler (6), other seawater cooling equipment (15) and the serial engine lubricating oil cooler (12) and the serial engine air cooler (13) are connected in parallel, and cooled seawater is directly discharged to the outside.
2. The cooling water system of a novel EGR host machine according to claim 1, characterized in that: the seawater cooling system has two schemes, namely, the scheme 1 and the scheme 2 according to the problem of whether the main seawater cooling pump (11) is selected to span gears after the EGR fresh water cooler (4) is added.
3. The cooling water system of a novel EGR host machine according to claim 2, characterized in that: in the scheme 1, a special EGR seawater cooling pump (16) is arranged for the EGR fresh water cooler (4), and the main seawater cooling pump (11) is used as a standby of the EGR seawater cooling pump (16) through a stop valve 2 (17).
4. The cooling water system of a novel EGR host machine according to claim 2, characterized in that: in the scheme 1, an EGR seawater cooling pump (16) is connected with a main seawater cooling pump (11) in parallel through a stop valve, and the single main seawater cooling pump (11) with the capacity larger than that of the EGR seawater cooling pump is used as an EGR seawater cooling pump (16) for standby; under normal operation condition, the stop valve 2 (17) is in a closed state, when the EGR seawater cooling pump (16) fails, the stop valve 2 (17) is opened, and the main seawater cooling pump (11) supplies energy for the EGR seawater cooling pipeline.
5. The cooling water system of a novel EGR host machine according to claim 2, characterized in that: in the scheme 2, in order to properly increase the flow of the main seawater cooling pump (11), the EGR fresh water cooler (4) is integrated into a cylinder liner water cooler (14) and a main engine lubricating oil cooler (12) and a main engine air cooler (13) which are connected in series.
6. The cooling water system of a novel EGR host machine according to claim 2, characterized in that: in the scheme 2, the EGR fresh water cooler (4) is integrated into a main sea water cooling loop, the main sea water cooling pump (11) is unchanged in selection, a special EGR sea water cooling pump (16) is not required, the construction cost of a shipyard is saved, and a cooling water pipeline is simplified.
7. The cooling water system of a novel EGR host machine according to claim 1, characterized in that: and a stop valve (5) in the host EGR fresh water cooling system is in a closed state under a normal operation condition, and when the auxiliary fresh water cooler (6) fails, the stop valve (5) is opened, and the EGR fresh water cooler (4) is connected into the fresh water cooling system to cool the generator equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211208821.5A CN115434833B (en) | 2022-09-30 | 2022-09-30 | Novel cooling water system of EGR host computer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211208821.5A CN115434833B (en) | 2022-09-30 | 2022-09-30 | Novel cooling water system of EGR host computer |
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| CN115434833A CN115434833A (en) | 2022-12-06 |
| CN115434833B true CN115434833B (en) | 2023-07-25 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2330287B1 (en) * | 2009-12-04 | 2014-02-26 | Caterpillar Motoren GmbH & Co. KG | Exhaust gas recirculation method and system |
| CN203358863U (en) * | 2013-07-04 | 2013-12-25 | 南京中船绿洲环保有限公司 | Ship central cooling system |
| JP6788440B2 (en) * | 2016-09-06 | 2020-11-25 | 川崎重工業株式会社 | Ship cooling system |
| JP2018095164A (en) * | 2016-12-15 | 2018-06-21 | 株式会社三井Ｅ＆Ｓホールディングス | Sea water cooling system for vessel |
| CN106939823A (en) * | 2017-04-26 | 2017-07-11 | 哈尔滨工程大学 | A kind of open cooling system to improve cooling system efficiency applied to marine low-speed machine exhaust gas turbine |
| CN107795414B (en) * | 2017-11-29 | 2020-07-28 | 哈尔滨工程大学 | Marine EGR diesel engine with improve SCR catalyst converter structure |
| CN111332447B (en) * | 2020-03-28 | 2022-02-22 | 哈尔滨工程大学 | Double-shaft double-motor ship ammonia-electricity hybrid power system with fuel cell |
| CN112879169B (en) * | 2021-03-09 | 2023-09-05 | 广西玉柴船电动力有限公司 | Method and system for controlling air intake and exhaust treatment of internal combustion engine |
| CN214698029U (en) * | 2021-03-12 | 2021-11-12 | 中国人民解放军海军工程大学 | Cooling control device for internal combustion engine |
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2022
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