KR20170075377A - System And Method For Load Changing Of Ship - Google Patents
System And Method For Load Changing Of Ship Download PDFInfo
- Publication number
- KR20170075377A KR20170075377A KR1020150184971A KR20150184971A KR20170075377A KR 20170075377 A KR20170075377 A KR 20170075377A KR 1020150184971 A KR1020150184971 A KR 1020150184971A KR 20150184971 A KR20150184971 A KR 20150184971A KR 20170075377 A KR20170075377 A KR 20170075377A
- Authority
- KR
- South Korea
- Prior art keywords
- engine
- cooling water
- temperature
- lubricating oil
- lubricant
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
- B63H21/383—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling cooling-water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
- B63H21/386—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling lubrication liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/02—Conditioning lubricant for aiding engine starting, e.g. heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
-
- 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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
- F02M31/10—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot liquids, e.g. lubricants or cooling water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2070/00—Details
- F01P2070/04—Details using electrical heating elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
A ship load change system and method are disclosed. A load fluctuation system of a ship according to the present invention is a system for a load fluctuation of a ship provided with a plurality of engines capable of being driven by gas, the system comprising: a preheating system for heating the engine to keep the cooling water of the engine at a constant temperature, ) unit; A high-temperature lubricant circulation unit for supplying high-temperature lubricant oil of an engine in operation of the engine to a lubricant tank of the engine being stopped; And a coolant recirculation unit for supplying coolant, which is heat-exchanged with high-temperature lubricating oil supplied from the lubricant tank to the engine, upstream of the combustion air cooler of the engine to heat combustion air of the engine by heat exchange with coolant water at an initial start- The time required for reaching the cooling water temperature, the lubricating oil temperature and the combustion air temperature condition for the load variation of the engine under stoppage can be shortened when a sudden change in the load of the ship is required.
Description
The present invention relates to a system and method for changing the load of a ship, and more particularly, to a system and method for changing the load of a ship when a sudden load fluctuation of a ship is required, a cooling water temperature, a lubricating oil temperature, And more particularly, to a system and method for changing the load of a ship.
In order to promote Arctic DF LNGC, it is necessary to drive a plurality of engines using one fuel oil among three types of fuel oil, diesel oil and natural gas, And supplies the generated electric power to the motor for the main propulsion, in addition to supplying the electric power for driving the auxiliary device through the switchboard.
In order to drive the propulsion motor or POD with the rotation speed necessary for ship propulsion, a variable frequency converter is used to supply power and speed control to the main propulsion motor. Since the gas cost is low in the case of the same power production as compared with the general heavy oil and light oil, driving the generator engine to the maximum gas mode is a method of saving fuel. The use of gaseous fuels also has the advantage of reducing emissions of harmful combustion emissions compared to oils such as heavy oil and light oil.
However, in the gas mode, there is a restriction that the load of the generator engine, which can be changed within a certain time, is about twice as slow as that in the heavy oil and light oil use modes.
The Arctic DF LNGC operates according to the normal load ramp during the polar voyage, but when the ICE breaking condition occurs, a sudden increase in the load is required to overcome the resistance caused by the ice crystal of the fore part. However, this load increase is difficult to predict in advance, and when the ICE break is required, the speed of engine load increase does not satisfy the required load increase rate, resulting in an increase in the operating time of the ship.
Even in the gas mode, if the engine satisfies a certain condition, the load can be increased more rapidly than the general condition of the load.
The permissible conditions for sudden load increase and decrease depend on the manufacturer of the engine, but it requires a certain level of engine cooling water temperature, a certain lubricating oil temperature and a certain combustion air temperature. If these requirements are not met, And the like.
1. Cooling water temperature: If the cooling water temperature does not reach a certain level, sudden thermal expansion and contraction of the components constituting the engine due to a sudden increase in load may cause wear and tear of each part or decrease in life due to increase of tolerance.
2. Lubricating oil temperature: The low temperature lubricating oil has a high viscosity, the lubricating oil circulation at each part is lowered, and the resistance is increased to deteriorate the performance of the engine.
3. Temperature of combustion air: DF Engine adjusts the knocking or miss firing by controlling the air / fuel ratio (air-fuel ratio) during gas combustion. The mixture ratio of air and fuel is adjusted by adjusting the pressure and temperature of air and then adjusting the fuel injection amount Adjust the final air-fuel ratio. However, if the temperature of the combustion air does not reach a certain level, this control system can not properly control the rapid mixture increase and may cause knocking or Miss firing.
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a load fluctuation system and method of a ship which can quickly reach the coolant, lubricant and combustion air temperature conditions, .
According to an aspect of the present invention, there is provided a system for load fluctuation of a ship provided with a plurality of engines capable of being driven by gas,
A cooling water preheating unit which warms up the engine to keep the cooling water of the engine at a predetermined temperature when the engine is stopped;
A high-temperature lubricant circulation unit for supplying high-temperature lubricant oil of an engine in operation of the engine to a lubricant tank of the engine being stopped; And
And a coolant recirculation unit for supplying coolant heat-exchanged with the high temperature lubricant supplied from the lubricant tank to the engine upstream of the combustion air cooler of the engine to heat the combustion air of the engine with heat exchange with the coolant during an initial start of the engine,
A load fluctuation system for a ship is provided which is capable of shortening a time required for a cooling water temperature, a lubricating oil temperature, and a combustion air temperature condition for a load variation of a stopped engine when a sudden load variation of the ship is required.
Preferably, the cooling water pre-heating unit includes a cooling water pump for pumping and circulating cooling water, and a cooling water preheater for warming the cooling water supplied from the cooling water pump, To a part of the apparatus.
Preferably, the high-temperature lubricant circulation unit includes: a lubricant discharge line provided to discharge lubricant oil from each lubricant tank of the plurality of engines; a lubricant supply pump provided in a line where a lubricant discharge line connected from each lubricant tank is joined; And a lubricant supply line provided to supply lubricant from the lubricant supply pump to each of the lubricant tanks.
Preferably, a valve is provided in each of the lubricating oil discharge line and the lubricating oil supply line connected to the respective lubricating oil tanks in the high temperature lubricating oil circulating unit, and lubricating oil is supplied from the lubricating oil tank of the engine, Can be supplied.
Preferably, the cooling water recirculation unit includes a cooling water recirculation line for supplying the high temperature lubricating oil supplied from the lubricant tank to the engine and the cooling water heat-exchanged in the lubricant cooler to the upstream side of the combustion air cooler of the engine, And a coolant recirculation pump for supplying the coolant to the combustion air cooler.
Preferably, when a sudden increase in load is required during an ice breaking condition during the polar voyage of the ship, the cooling water temperature, the lubricating oil temperature and the combustion air temperature conditions for the load fluctuation of the engine being stopped by the load fluctuation system You can reach it quickly.
According to another aspect of the present invention, there is provided a method of changing a load on a ship provided with a plurality of engines capable of being driven by gas,
When the engine is stopped, the cooling water of the engine is warmed up to a predetermined temperature,
Supplying high-temperature lubricating oil of an engine in operation of the engine to a lubricating oil tank of a stopped engine,
The engine cooling water is supplied to the upstream side of the combustion air cooler of the engine so that the combustion air of the engine is heated by heat exchange with the cooling water at the initial start of the engine,
Wherein when a sudden change in the load is required on the ship, the arrival time to the cooling water temperature, the lubricating oil temperature and the combustion air temperature condition for the load fluctuation of the engine in the stopped state can be shortened .
Preferably, when a sudden increase in load is required during an ice breaking condition during the polar voyage of the ship, it is preferable that the cooling water temperature, the lubricating oil temperature and the combustion air temperature condition So that they can be reached quickly.
According to the load fluctuation system and method of the present invention, it is possible to quickly reach the coolant temperature, the lubricating oil temperature and the combustion air temperature conditions for the load fluctuation of the stopped engine when sudden load fluctuation is required on the ship. This allows a rapid load increase when a sudden load change such as an ice breaking condition is required, which can shorten a ship's operating time. In addition, since the engine is not required to be in a low-load operation and standby state in order to cope with such abrupt load fluctuation, the fuel cost and the operating cost can be reduced.
Figure 1 schematically depicts the lube oil tanks and the hot lubricant circulation of the engine in a load variation system of a ship in accordance with an embodiment of the present invention.
2 schematically shows a cooling water recirculation unit in a load fluctuation system of a ship according to an embodiment of the present invention.
In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.
Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.
FIG. 1 schematically shows the lubricant tanks and the high temperature lubricant circulation unit of the engine in the load fluctuation system of the ship according to the embodiment of the present invention, and FIG. 2 schematically shows the coolant recirculation unit.
As shown in FIGS. 1 and 2, a load fluctuation system according to an embodiment of the present invention is a system for load fluctuation of a ship provided with a plurality of engines that can be driven by gas, A high temperature lubricating oil circulating portion for supplying a high temperature lubricating oil of an engine in operation of the engine to a lubricating oil tank of the engine being stopped and a high temperature lubricating oil supplied from the lubricating oil tank to the engine, And a cooling water recirculation unit for supplying the heat-exchanged cooling water to the upstream side of the combustion air cooler of the engine to heat the combustion air of the engine by heat exchange with the cooling water at the initial start of the stopped engine.
In the present embodiment, a plurality of engines provided on a ship are engines that can be driven using gas as a fuel, and may be, for example, a DF (Dual Fuel) engine capable of using natural gas, heavy oil, light oil as fuel.
Permissible conditions for sudden increase and decrease of load include engine coolant temperature above a certain level, lubricating oil temperature above a certain level, and combustion air temperature above a certain level. The specific value varies depending on the engine manufacturer. In this embodiment, a cooling water preheating unit, a high-temperature lubricant circulating unit, and a cooling water recirculating unit are constituted so that when sudden load fluctuation of the ship is required such as an ice breaking condition, the cooling water temperature, the lubricating oil temperature, So that the time to reach the temperature condition can be shortened.
The cooling water preheating unit includes a cooling water pump for heating the cooling water to keep it at a predetermined temperature or higher even when the engine is stopped and circulating the cooling water by pumping it and a cooling water preheater for warming the cooling water supplied from the cooling water pump Lt; / RTI > The cooling water preheating unit supplies the parts of the engine that have been warmed up by the reheated cooling water of the engine that was being stopped. The cooling water preheating unit supplies each part of the engine, which is caused by sudden thermal expansion and contraction of the parts, It is possible to prevent a reduction in life span due to abrasion or an increase in tolerance.
1, the high temperature lubricant circulation unit includes a lubricant discharge line DL provided to discharge lubricant oil from each lubricant tank of the plurality of engines E1, E2, E3, and E4, A
V1, V2, V3, V4, V4, V5, V6, V7 and V8 are provided in the lubricating oil discharge line and the lubricating oil supply line which are connected to the respective lubricant tanks in the high temperature lubricant circulation part, Lubricating oil can be supplied from the lubricating oil tank of the engine to the lubricating oil tank of the stopped engine.
For example, if the engine of E1 is stopped and the remaining engines E2, E3, and E4 are running in the system shown in the diagram of Fig. 1, valves V3 and V2 are opened to release hot lubricant To the lubricating oil tank LT1 of the E1 which is stopped via the lubricating oil supply line SL via the lubricating oil supply line DL via the lubricating oil discharge line DL and the low temperature lubricating oil of the lubricating oil tank LT1 is opened by opening V1 and V4 Can be supplied to the lubricating oil tank LT2 of the E2 engine which is being driven via the lubricating
The temperature of the lubricating oil tank is maintained at about 68 ~ 78 ℃ when the engine is operated. In case of exchanging with 60㎥ / h pump at 5 ℃, which is about 12㎥ capacity, the lubricating oil temperature is raised . When a load increase such as ICE Breaking is required, the engine that is stopped is also operated, and the time required to reach the lubricating oil requirement can be further shortened because the temperature of the lubricating oil recirculated to the tank is increased by lubrication of the engine. It is possible to appropriately select and install the capacity of the pump in consideration of the time required for reaching the required condition of the engine.
Each device such as pump and valve of the high temperature lubricant circulation part monitors the operation state of the engine and the lubricating oil temperature so that it can be operated by a control part (not shown) by the inputted sequence when a sudden increase or decrease of load such as ICE breaking is necessary.
On the other hand, as shown in FIG. 2, the coolant recirculation unit recirculates coolant, which is heat-exchanged in the lubricant cooler (LO cooler) with hot lubricant supplied from the lubricant tank to the engine, to the upstream of the LT air cooler A line RL1 and a
During the initial operation of a stopped engine, the engine is loaded with cooling water that has cooled the lubricating oil through the lubricating oil cooler (LO Cooler), and the engine is loaded, . When the load after the initial engine startup is low As the lubricating oil temperature of the lubricating oil tank rises while the high temperature lubricating oil is supplied to the lubricating oil tank of the engine that is being stopped from the lubricating oil tank of the engine under driving as described above, can do.
The HT Air Cooler shown in FIG. 2 is also a kind of combustion air cooler. The cooling water discharged from the CYL jacket of the engine is supplied to the HT Air Cooler, the HT Air Cooler is supplied from the rear end of the HT Air Cooler through the recirculation line RL3 to the upstream of the CYL jacket and recirculated to the
The cooling water heat-exchanged in the lubricant cooler (LO cooler) can also be supplied to the
The cooling water preheater and the cooling water pump of the above-described cooling water preheating unit may be respectively symmetrical to the
As described above, when the system of the present embodiment requires a sudden load increase in the ice breaking condition during the polar voyage of the ship, the cooling water temperature, the lubricating oil temperature, and the combustion air temperature condition So that rapid load increase can be achieved, thereby shortening the operating time of the ship.
In addition, since the engine is not required to be placed in a low load operation or standby state in order to cope with such a sudden load fluctuation, the fuel cost and operating cost can be reduced, thereby improving the economical efficiency.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is.
E1, E2, E3, E4: engine
DL: Lubricating oil discharge line
SL: Lubricating oil supply line
100: Lubricating oil supply pump
V1, V2, V3, V4, V5, V6, V7, V8: Valve
RL1: Cooling water recirculation line
200: Cooling water recirculation pump
Claims (8)
A cooling water preheating unit which warms up the engine to keep the cooling water of the engine at a predetermined temperature when the engine is stopped;
A high-temperature lubricant circulation unit for supplying high-temperature lubricant oil of an engine in operation of the engine to a lubricant tank of the engine being stopped; And
And a coolant recirculation unit for supplying coolant heat-exchanged with high-temperature lubricant supplied from the lubricant tank to the engine upstream of the combustion air cooler of the engine to heat combustion air of the engine by heat exchange with coolant water at an initial start-
Wherein when a sudden change in the load of the ship is required, the arrival time of the cooling water temperature, the lubricating oil temperature, and the combustion air temperature condition for the load change of the stopped engine can be shortened.
A cooling water pump for pumping and circulating cooling water; And
And a cooling water preheater for warming the cooling water supplied from the cooling water pump,
And the cooling water that has been warmed up by the rebuilding of the stopped engine is supplied to the components of the engine.
A lubricant discharge line provided to discharge lubricant oil from each lubricant tank of the plurality of engines;
A lubricant supply pump provided in a line where a lubricant discharge line connected from each lubricant tank is joined; And
And a lubricating oil supply line provided to supply lubricating oil from the lubricating oil supply pump to each of the lubricating oil tanks.
A lubricating oil discharge line and a lubricating oil supply line which are connected to the respective lubricating oil tanks in the high temperature lubricating oil circulation unit are respectively provided with valves for supplying lubricating oil from the lubricating oil tank of the engine being driven to the lubricating oil tank of the engine Characterized by a load fluctuation system of the ship.
A coolant recirculation line for supplying the high temperature lubricant supplied from the lubricant tank to the engine and the coolant heat-exchanged in the lubricant cooler to the combustion air cooler upstream of the engine; And
And a cooling water recirculation pump for pumping cooling water supplied from the cooling water recirculation line and supplying the cooling water to the combustion air cooler.
When a sudden increase in load is required during an ice breaking condition during the polar voyage of the ship, it is possible to quickly reach the cooling water temperature, lubricating oil temperature and combustion air temperature conditions for load fluctuation of the engine being stopped by the load fluctuation system The load fluctuation system of the ship.
When the engine is stopped, the cooling water of the engine is warmed up to a predetermined temperature,
Supplying high-temperature lubricating oil of an engine in operation of the engine to a lubricating oil tank of a stopped engine,
The engine cooling water is supplied to the upstream side of the combustion air cooler of the engine so that the combustion air of the engine is heated by heat exchange with the cooling water at the initial start of the engine,
Wherein when a sudden change in load is required on the ship, a time for reaching a cooling water temperature, a lubricating oil temperature, and a combustion air temperature condition for a load change of the engine in a stopped state can be shortened.
When an abrupt load increase is required during an ice breaking condition during the polar voyage of the ship, it is possible to rapidly reach the cooling water temperature, lubricating oil temperature and combustion air temperature condition for load fluctuation of the engine being stopped by the load variation method The load of the ship is changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150184971A KR102010878B1 (en) | 2015-12-23 | 2015-12-23 | System And Method For Load Changing Of Ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150184971A KR102010878B1 (en) | 2015-12-23 | 2015-12-23 | System And Method For Load Changing Of Ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20170075377A true KR20170075377A (en) | 2017-07-03 |
| KR102010878B1 KR102010878B1 (en) | 2019-08-14 |
Family
ID=59357938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150184971A KR102010878B1 (en) | 2015-12-23 | 2015-12-23 | System And Method For Load Changing Of Ship |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR102010878B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190081151A (en) | 2017-12-29 | 2019-07-09 | 대우조선해양 주식회사 | Load regulation device and method in electric propulsion ship |
| KR20190081518A (en) | 2017-12-29 | 2019-07-09 | 대우조선해양 주식회사 | Load regulation device and method in electric propulsion ship |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0630408U (en) * | 1992-09-25 | 1994-04-22 | 株式会社クボタ | Lubricating oil supply device for multiple installed engines |
| JP3062761B2 (en) * | 1990-01-26 | 2000-07-12 | 株式会社小松製作所 | Engine lubricating oil cooling system |
| KR100985032B1 (en) * | 2008-09-10 | 2010-10-04 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Hydraulic tank heating apparatus utilizing exhausting gas from diesel heater in heavy construction equoipment |
| KR20150071753A (en) * | 2013-12-18 | 2015-06-29 | 대우조선해양 주식회사 | Dry running preventing apparatus and method of lubrication pump for engine lubrication oil system |
-
2015
- 2015-12-23 KR KR1020150184971A patent/KR102010878B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3062761B2 (en) * | 1990-01-26 | 2000-07-12 | 株式会社小松製作所 | Engine lubricating oil cooling system |
| JPH0630408U (en) * | 1992-09-25 | 1994-04-22 | 株式会社クボタ | Lubricating oil supply device for multiple installed engines |
| KR100985032B1 (en) * | 2008-09-10 | 2010-10-04 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Hydraulic tank heating apparatus utilizing exhausting gas from diesel heater in heavy construction equoipment |
| KR20150071753A (en) * | 2013-12-18 | 2015-06-29 | 대우조선해양 주식회사 | Dry running preventing apparatus and method of lubrication pump for engine lubrication oil system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190081151A (en) | 2017-12-29 | 2019-07-09 | 대우조선해양 주식회사 | Load regulation device and method in electric propulsion ship |
| KR20190081518A (en) | 2017-12-29 | 2019-07-09 | 대우조선해양 주식회사 | Load regulation device and method in electric propulsion ship |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102010878B1 (en) | 2019-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8555826B2 (en) | Cooler arrangement for a drive train in a motor vehicle | |
| GB2471514A (en) | Parallel Connected Exhaust Gas Heat Exchangers for a Motor Vehicle Engine | |
| US6098576A (en) | Enhanced split cooling system | |
| US7162987B2 (en) | Method and apparatus for maintaining warm engine temperature | |
| DE102010060319A1 (en) | cooling system | |
| JP2009507717A (en) | Method for controlling vehicle drive train with two cooling circuits | |
| JP2009002346A (en) | Method for thermally managing engine and engine system | |
| GB2472228A (en) | Reducing the fuel consumption of an i.c. engine by using heat from an EGR cooler to heat engine oil after cold-starting | |
| KR20170075377A (en) | System And Method For Load Changing Of Ship | |
| KR20120036134A (en) | Cooling system for hybrid vehicle | |
| KR102662430B1 (en) | Fuel Oil Changer Over System and Method for a Vessel | |
| KR101834591B1 (en) | Heating system for an internal combustion engine | |
| KR101042073B1 (en) | Oil supplying system for ships | |
| US9197098B2 (en) | Standby power system that predicts a need to supply power to a load to minimize start time of a generator | |
| KR101026181B1 (en) | Fuel oil supply system of an internal combustion engine | |
| KR20200031927A (en) | Engine cooling system | |
| RU2577916C1 (en) | System of heating and keeping of optimal temperatures of working liquids and oils in plants of self-propelled machines | |
| KR101943663B1 (en) | Preheating and cooling system for engine | |
| KR101291057B1 (en) | Fuel supply apparatus for engine | |
| RU2134804C1 (en) | System to maintain optimum temperature condition of internal combustion engine | |
| RU209659U1 (en) | System for heating and maintaining optimal temperatures of working fluids and oils in units of self-propelled machines | |
| KR20190028136A (en) | Warm up system for generator and ship | |
| CN111550324B (en) | Cylinder device for large engine and cooling method | |
| RU2803593C1 (en) | Method for comprehensive utilization of exhaust gas energy in engine-transmission units of self-propelled vehicles and system for its implementation | |
| CN108528672B (en) | Ship cooling system for saving fuel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application | ||
| J201 | Request for trial against refusal decision | ||
| J301 | Trial decision |
Free format text: TRIAL NUMBER: 2017101005651; TRIAL DECISION FOR APPEAL AGAINST DECISION TO DECLINE REFUSAL REQUESTED 20171123 Effective date: 20190620 |
|
| S901 | Examination by remand of revocation | ||
| GRNO | Decision to grant (after opposition) | ||
| GRNT | Written decision to grant |