CN105201622A - Cooling and lubricating system of marine diesel engine - Google Patents

Cooling and lubricating system of marine diesel engine Download PDF

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Publication number
CN105201622A
CN105201622A CN201510669932.XA CN201510669932A CN105201622A CN 105201622 A CN105201622 A CN 105201622A CN 201510669932 A CN201510669932 A CN 201510669932A CN 105201622 A CN105201622 A CN 105201622A
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CN
China
Prior art keywords
diesel engine
water pump
marine diesel
pump
sea water
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Application number
CN201510669932.XA
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Chinese (zh)
Inventor
沈捷
李伟
黄永仲
覃文
王利乐
胡俊芳
Original Assignee
广西玉柴机器股份有限公司
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Priority to CN201510669932.XA priority Critical patent/CN105201622A/en
Publication of CN105201622A publication Critical patent/CN105201622A/en

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Abstract

The invention discloses a cooling and lubricating system of a marine diesel engine. The cooling and lubricating system comprises a freshwater pump, a sea water pump and an engine oil pump, wherein the freshwater pump, the sea water pump and the engine oil pump are independently driven by alternating current motors respectively; rotary speeds and power of the freshwater pump and the sea water pump are adjusted according to temperatures of cooling water of the marine diesel engine; and rotary speeds and power of the engine oil pump are adjusted according to engine oil pressure of the marine diesel engine. With the adoption of the system, the power consumption of the whole machine can be greatly reduced, the fuel economy of the diesel engine is improved and the service life of the diesel engine also can be prolonged.

Description

Marine diesel engine cooling and lubrication system

Technical field

The present invention relates to marine diesel engine field, particularly a kind of marine diesel engine cooling and lubrication system.

Background technique

As everyone knows, the annexes such as fresh water pump, sea water pump and oil pump in the cooling system of marine diesel engine and lubrication system utilize the power of diesel engine self usually, adopt the operate accessories such as gear or belt drive fresh water pump, sea water pump and oil pump, it affects the power stage of diesel engine.

But promote transmission system efficiency in any case optimize, fresh water pump, sea water pump and oil pump consume the power of diesel engine self all the time, and driving unit fault rate is also higher, have impact on the working life of diesel engine.And, diesel engine is in full speed range, cooling system and lubrication system are also difficult to the cooling and the lubricating requirement that provide proper strength, particularly for the diesel engine of propelling peculiar to vessel, under often running on middle and slow speed of revolution operating mode, and in design in order to cooling during satisfied middle low cruise and lubricating function demand, it is larger that the flow of fresh water pump, sea water pump and oil pump is chosen usually, and when high regime is run, cooling and lubrication system will expend unnecessary power, and the fuel consume of motor also increases thereupon.In addition; after marine diesel engine is shut down; because fresh water pump, sea water pump and oil pump also quit work thereupon; cannot be taken away by circulation in time in the heat short time that diesel engine produces; high temperature is very large on position impacts such as piston, bent axle and connecting rod bearing shell, TC bearings, cylinder cap and body water jackets, affects the working life of diesel engine.

The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.

Summary of the invention

The object of the present invention is to provide a kind of marine diesel engine to cool and lubrication system, both significantly can reduce the power consumpiton of complete machine, improve Diesel Engine Fuel Economy, diesel engine working life can be extended again.

For achieving the above object, the invention provides the cooling of a kind of marine diesel engine and lubrication system, comprise fresh water pump, sea water pump and oil pump, fresh water pump, sea water pump and oil pump are respectively by AC motor drive, the rotating speed of fresh water pump and sea water pump and power stage adjust according to the temperature of marine diesel engine cooling water, and the rotating speed of oil pump and power stage adjust according to the engine oil pressure of marine diesel engine.

Preferably, also comprise solar energy photovoltaic generator, it is drive the AC motor of fresh water pump, sea water pump and oil pump to power.

Preferably, also comprise generating auxiliary machinery device peculiar to vessel and battery pack, utilize generating auxiliary machinery device peculiar to vessel to power when the electric energy that solar energy photovoltaic generator produces is not enough, when the electric energy that solar energy photovoltaic generator produces is unnecessary by this unnecessary electrical power storage in battery pack.

Preferably, marine diesel engine is started by electric starting motor, and electric starting motor is powered by solar energy photovoltaic generator or battery pack.

Preferably, also comprise controller, when before marine diesel engine start, controller controller oil pump operates in advance; When after marine diesel engine shutdown, controller controls fresh water pump, sea water pump and oil pump and remains in operation the scheduled time.

Compared with prior art, the present invention has following beneficial effect:

1. the electric energy major part of the annex consumption such as fresh water pump, sea water pump, oil pump and electric starting motor is provided by solar energy photovoltaic generator, so significantly can reduce the depletion charge of promotion diesel engine peculiar to vessel;

2, because fresh water pump, sea water pump and oil pump are respectively by AC motor drive, wherein the rotating speed of fresh water pump and sea water pump and power stage adjust according to the temperature of marine diesel engine cooling water, the rotating speed of oil pump and power stage adjust according to the engine oil pressure of marine diesel engine, make the cooling water temperature of diesel engine and engine oil pressure can be steady in a long-term in setting range, the heat load improving parts and components of diesel engine is impacted and thermal stress impact, and improves the fuel economy of diesel engine;

3, before diesel engine starting, can run in advance by controller oil pump, the movement parts such as the bent axle of diesel engine, connecting rod, piston, pressurized machine, gear pair are made to obtain the lubrication of sufficient intensity in advance, eliminate the wearing and tearing and impact that start and instantaneously above-mentioned movement parts is caused, extend diesel engine working life, after Technique For Push Diesel Engine is shut down, the oil pump of AC motor driving, fresh water pump and sea water pump can be controlled work on the scheduled time, take away the heat that high-temperature component produces in time, extend the working life advancing main frame;

4, electric starting motor directly can start diesel engine with the electrical energy drive of solar energy power generating, also diesel engine can be started with the electrical energy drive in storage battery, so electric starting motor does not consume the electric energy of diesel engine usually yet, the fuel consume of diesel engine can be reduced further;

5, because fresh water pump, sea water pump and oil pump adopt AC motor to drive respectively, so eliminate the many potential faults brought with diesel engine gear or belt transmission, and mounting point is more flexible, and universal scope is wide.

Accompanying drawing explanation

Fig. 1 is the schematic diagram according to marine diesel engine cooling of the present invention and lubrication system.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.

Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.

As shown in Figure 1, according to a kind of marine diesel engine cooling and the lubrication system 1 of the specific embodiment of the invention, comprise fresh water pump 3, sea water pump 4 and oil pump 2, core is that fresh water pump 3, sea water pump 4 and oil pump 2 are respectively by AC motor drive, wherein the rotating speed of fresh water pump 3 and sea water pump 4 and power stage adjust according to the temperature of marine diesel engine cooling water, and the rotating speed of oil pump 2 and power stage adjust according to the engine oil pressure of marine diesel engine.

In such scheme, fresh water pump 3, sea water pump 4 and oil pump 2 adopt AC motor drive respectively, be different from gear or the belt transmission of conventional employing diesel engine, make the Flow characteristics of fresh water pump 3, sea water pump 4 and oil pump 2 not by the impact of diesel engine speed height, according to the needs of cooling system and lubrication system, rotating speed and the power stage of AC motor can be regulated in real time.Particularly, when diesel engine runs at middle and slow speed of revolution high load working condition, water temperature is usually higher, and engine oil pressure is usually lower, now, by suitably improving rotating speed and the power stage of fresh water pump 3, sea water pump 4 and oil pump 2, cooling or sae number requirement can be met.When diesel engine is lower in water temperature, or when running under the higher operating mode of engine oil pressure, the rotating speed then suitably reducing fresh water pump 3, sea water pump 4 and oil pump 2 drive motor reduces cooling or sae number, motor is run under the cooling of proper strength and lubrication, allows diesel engine be in best fuel consume scope.

As a kind of preferred embodiment, also comprise solar energy photovoltaic generator 7, it is drive the AC motor of fresh water pump 3, sea water pump 4 and oil pump 2 to power.In the present embodiment, solar energy photovoltaic generator 7 comprises solar energy power generating plate and inverter.Solar energy power generating plate is arranged on hull, and the direct current sent by solar energy power generating plate by inverter carries out rectification output AC electricity, provides driving power for annexes such as the fresh water pump 3 to AC motor drive, sea water pump 4 and oil pump 2.

As a kind of preferred embodiment, also comprise generating auxiliary machinery device 8 peculiar to vessel and battery pack 15, utilize generating auxiliary machinery device 8 peculiar to vessel to power when the electric energy that solar energy photovoltaic generator 7 produces is not enough, when the electric energy that solar energy photovoltaic generator 7 produces is unnecessary by this unnecessary electrical power storage in battery pack 15.

As a kind of preferred embodiment, marine diesel engine is started by electric starting motor 5, and electric starting motor 5 is powered by solar energy photovoltaic generator 7 or battery pack 15.In the present embodiment, the electric energy that solar energy power generating plate sends both may be used for diesel engine starting, drove electric starting motor 5, and the electric energy of unnecessary solar energy power generating can be stored in battery pack 15.

As a kind of preferred embodiment, also comprise controller 6, when before marine diesel engine start, controller 6 controller oil pump 2 operates in advance.When after marine diesel engine shutdown, controller 6 controls fresh water pump 3, sea water pump 4 and oil pump 2 and remains in operation the scheduled time.In the present embodiment, before Technique For Push Diesel Engine starts, the oil pump 2 that can control AC motor driving operates in advance, ensure that the lubrication system of whole diesel engine just sets up enough engine oil pressures before being initiated, in advance each kinematic pair 10 of motor such as movement parts such as bent axle, connecting rod, piston, pressurized machine, the gear pair of key are lubricated.After Technique For Push Diesel Engine is shut down, the oil pump 2 of AC motor driving, fresh water pump 3 and sea water pump 4 can be controlled and work on the scheduled time, take away the heat that high-temperature component produces in time, extend the working life advancing main frame.

In above-mentioned preferred embodiment, illumination under normal circumstances by day, and the driving of the annexes such as fresh water pump 3, sea water pump 4, oil pump 2 and electric starting motor 5 provides electric energy by solar energy power generating.When sunshine strength deficiency and navigation at night time, the generating auxiliary machinery device peculiar to vessel 8 that boats and ships carry can provide electric energy to annexes such as fresh water pump 3, sea water pump 4, oil pump 2 and electric starting motors 5.Switching between solar energy photovoltaic generator 7 and generating auxiliary machinery device 8 peculiar to vessel is regulated according to solar energy power generating output power size by controller 6, when the output power of solar energy power generating is not enough to drive these annexes, then controller 6 automatically switches to generating subsidiary engine power supply, night or severse weather unglazed according to time, then the electric energy of the annex such as fresh water pump 3, sea water pump 4, oil pump 2 and electric starting motor 5 is all provided by generating auxiliary machinery device 8 peculiar to vessel.

In addition, in the cooling of the marine diesel engine of the present embodiment and lubrication system, seawater by sea water pump 4 extract enter water-air intercooler 14 after and seawater fresh water heat exchanger 16 carry out heat exchange outflow.Freshet, through machine oil cooler 13 and machine oil heat exchange, is communicated with thermoregulator 12 after entering the cooling jacket 11 of cylinder block, cylinder head simultaneously.Machine oil is circulated between oil sump 9 and each kinematic pair 10 of motor by oil pump 2.

To sum up, the cooling of the marine diesel engine of the present embodiment and lubrication system 1 have energy-saving and emission-reduction, extend diesel engine working life, compact structure, practical, are convenient to the advantage installed and promote the use of.Particularly, the electric energy of the annex consumption such as fresh water pump 3, sea water pump 4, oil pump 2 and electric starting motor 5 major part is provided by solar energy photovoltaic generator 7,7 depletion charges that significantly can reduce promotion diesel engine peculiar to vessel.Because fresh water pump 3, sea water pump 4 and oil pump 2 are respectively by AC motor drive, wherein the rotating speed of fresh water pump 3 and sea water pump 4 and power stage adjust according to the temperature of marine diesel engine cooling water, the rotating speed of oil pump 2 and power stage adjust according to the engine oil pressure of marine diesel engine, make the cooling water temperature of diesel engine and engine oil pressure can be steady in a long-term in setting range, the heat load improving parts and components of diesel engine is impacted and thermal stress impact, and improves the fuel economy of diesel engine.Eliminate the many potential faults brought with diesel engine gear or belt transmission, and mounting point is more flexible, universal scope is wide simultaneously.Particularly, before diesel engine starting, can run in advance by controller oil pump, the movement parts such as the bent axle of diesel engine, connecting rod, piston, pressurized machine, gear pair are made to obtain the lubrication of sufficient intensity in advance, eliminate the wearing and tearing and impact that start and instantaneously above-mentioned movement parts is caused, extend diesel engine working life.After Technique For Push Diesel Engine is shut down, the oil pump 2 of AC motor driving, fresh water pump 3 and sea water pump 4 can be controlled and work on the scheduled time, take away the heat that high-temperature component produces in time, extend the working life advancing main frame.In addition, electricity starting motor directly can start diesel engine with the electrical energy drive of solar energy power generating, also can start diesel engine with the electrical energy drive in storage battery, so electric starting motor does not consume the electric energy of diesel engine usually, the fuel consume of diesel engine can be reduced further yet.

The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.

Claims (5)

1. a marine diesel engine cooling and lubrication system, comprise fresh water pump, sea water pump and oil pump, it is characterized in that, described fresh water pump, described sea water pump and described oil pump are respectively by AC motor drive, the rotating speed of described fresh water pump and described sea water pump and power stage adjust according to the temperature of described marine diesel engine cooling water, and the rotating speed of described oil pump and power stage adjust according to the engine oil pressure of described marine diesel engine.
2. marine diesel engine cooling according to claim 1 and lubrication system, is characterized in that, also comprise solar energy photovoltaic generator, and it is drive the AC motor of described fresh water pump, described sea water pump and described oil pump to power.
3. marine diesel engine cooling according to claim 2 and lubrication system, it is characterized in that, also comprise generating auxiliary machinery device peculiar to vessel and battery pack, the electric energy that described solar energy photovoltaic generator produces utilizes described generating auxiliary machinery device peculiar to vessel to power time not enough, when the electric energy that described solar energy photovoltaic generator produces is unnecessary by this unnecessary electrical power storage in described battery pack.
4. marine diesel engine cooling according to claim 3 and lubrication system, it is characterized in that, described marine diesel engine is started by electric starting motor, and described electric starting motor is powered by described solar energy photovoltaic generator or described battery pack.
5. marine diesel engine cooling according to claim 1 and lubrication system, is characterized in that, also comprise controller, and when before described marine diesel engine start, described controller controls described oil pump and operates in advance;
When after described marine diesel engine shutdown, described controller controls described fresh water pump, described sea water pump and described oil pump and remains in operation the scheduled time.
CN201510669932.XA 2015-10-15 2015-10-15 Cooling and lubricating system of marine diesel engine CN105201622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510669932.XA CN105201622A (en) 2015-10-15 2015-10-15 Cooling and lubricating system of marine diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510669932.XA CN105201622A (en) 2015-10-15 2015-10-15 Cooling and lubricating system of marine diesel engine

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Publication Number Publication Date
CN105201622A true CN105201622A (en) 2015-12-30

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CN201510669932.XA CN105201622A (en) 2015-10-15 2015-10-15 Cooling and lubricating system of marine diesel engine

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58106123A (en) * 1981-12-18 1983-06-24 Tsuneo Ishii Cooling system of marine engine
CN101382133A (en) * 2008-08-01 2009-03-11 天津大学 Risk alarm method for ship electric pump
CN201284007Y (en) * 2008-09-08 2009-08-05 丁行 Electric ship using multiple energy sources
CN101716993A (en) * 2009-12-16 2010-06-02 中国船舶重工集团公司第七○二研究所 Boat with separated diesel-engine cooling sea water pump and method for starting sea water pump
CN201614961U (en) * 2010-01-28 2010-10-27 中国重汽集团济南动力有限公司 Marine diesel engine
CN202163611U (en) * 2011-05-18 2012-03-14 中国长江航运集团江东船厂 Ship water cooling system
CN103104952A (en) * 2011-11-15 2013-05-15 海南桑弗新能源科技开发有限公司 Air conditioning system
CN203825924U (en) * 2014-04-08 2014-09-10 上海船舶研究设计院 Ship cooling system scale model
US8882968B1 (en) * 2012-06-21 2014-11-11 Robert L. Griggs Method and apparatus for solar desalination
CN205025552U (en) * 2015-10-15 2016-02-10 广西玉柴机器股份有限公司 Marine diesel cooling and lubricating system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58106123A (en) * 1981-12-18 1983-06-24 Tsuneo Ishii Cooling system of marine engine
CN101382133A (en) * 2008-08-01 2009-03-11 天津大学 Risk alarm method for ship electric pump
CN201284007Y (en) * 2008-09-08 2009-08-05 丁行 Electric ship using multiple energy sources
CN101716993A (en) * 2009-12-16 2010-06-02 中国船舶重工集团公司第七○二研究所 Boat with separated diesel-engine cooling sea water pump and method for starting sea water pump
CN201614961U (en) * 2010-01-28 2010-10-27 中国重汽集团济南动力有限公司 Marine diesel engine
CN202163611U (en) * 2011-05-18 2012-03-14 中国长江航运集团江东船厂 Ship water cooling system
CN103104952A (en) * 2011-11-15 2013-05-15 海南桑弗新能源科技开发有限公司 Air conditioning system
US8882968B1 (en) * 2012-06-21 2014-11-11 Robert L. Griggs Method and apparatus for solar desalination
CN203825924U (en) * 2014-04-08 2014-09-10 上海船舶研究设计院 Ship cooling system scale model
CN205025552U (en) * 2015-10-15 2016-02-10 广西玉柴机器股份有限公司 Marine diesel cooling and lubricating system

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Application publication date: 20151230