CN108223096B - Cooling system of V-shaped multi-cylinder diesel engine - Google Patents

Cooling system of V-shaped multi-cylinder diesel engine Download PDF

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Publication number
CN108223096B
CN108223096B CN201810122093.3A CN201810122093A CN108223096B CN 108223096 B CN108223096 B CN 108223096B CN 201810122093 A CN201810122093 A CN 201810122093A CN 108223096 B CN108223096 B CN 108223096B
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China
Prior art keywords
temperature water
intercooler
low
cooling
cylinder block
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CN201810122093.3A
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CN108223096A (en
Inventor
黄第云
沈捷
黄永仲
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Guangxi Yuchai Marine and Genset Power Co Ltd
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Guangxi Yuchai Machinery Co Ltd
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Priority to CN201810122093.3A priority Critical patent/CN108223096B/en
Priority to PCT/CN2018/083190 priority patent/WO2019153494A1/en
Publication of CN108223096A publication Critical patent/CN108223096A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0412—Multiple heat exchangers arranged in parallel or in series
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • F01M1/02—Pressure lubrication using lubricating pumps
    • 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
    • F01M5/002—Cooling
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • 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
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0462—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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10157—Supercharged engines
    • 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
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/123—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P2005/105—Using two or more pumps
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/02—Intercooler
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The invention discloses a cooling system of a V-shaped multi-cylinder diesel engine, which comprises a V-shaped cylinder body and a plurality of single cylinder covers arranged at the cylinder opening part of the V-shaped cylinder body, wherein cold water taking jackets are arranged in the V-shaped cylinder body and the single cylinder covers, the lubricating system also comprises an engine oil cooler, the cooling system comprises a high-temperature water circulation loop and a low-temperature water circulation loop, the low-temperature water circulation loop comprises a rear-row radiator and a low-temperature water pump, the low-temperature water circulation loop is used for cooling the engine oil cooler, the high-temperature water circulation loop comprises a front-row radiator and a high-temperature water pump, and the high-temperature water circulation loop is used for cooling the V-shaped cylinder body and the single cylinder covers. The cooling system adopts the classified cooling of high-temperature and low-temperature components, can reduce the temperature of air inlet and the temperature of engine oil, and simultaneously reduces the loss of heat energy, so that the engine is more oil-saving.

Description

Cooling system of V-shaped multi-cylinder diesel engine
Technical Field
The invention relates to the field of engine cooling, in particular to a cooling system of a V-shaped multi-cylinder diesel engine.
Background
High-power high-speed diesel engines are generally used in generator stations, petrochemical industry, high-speed light ships, naval vessels and the like. The high-power high-speed diesel engine basically adopts a four-stroke engine, and the high-power high-speed diesel engine requires very high single-engine power, so that the high-load requirement is higher than that of a common diesel engine, the average effective pressure of the high-power high-speed diesel engine can reach 3MPa, and the highest detonation pressure of the high-power high-speed diesel engine can reach 20 MPa. Because the high-power high-speed diesel engine is required to have the characteristics of high power and large torque, the high-power high-speed diesel engine has higher requirements on several important key systems, such as a cylinder assembly system, a power system, a diesel oil system, a cooling system, a lubricating system and the like.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a cooling system of a V-shaped multi-cylinder diesel engine, which can cool high-temperature and low-temperature components in a classified manner, reduce the air inlet temperature and the engine oil temperature, reduce the heat energy loss and save the oil of the engine.
In order to achieve the purpose, the invention provides a cooling system of a V-shaped multi-cylinder diesel engine, which comprises a V-shaped cylinder body and a plurality of single cylinder covers arranged at the cylinder opening part of the V-shaped cylinder body, wherein cold water taking jackets are arranged in the V-shaped cylinder body and the single cylinder covers, the lubricating system also comprises an engine oil cooler, the cooling system comprises a high-temperature water circulation loop and a low-temperature water circulation loop, the low-temperature water circulation loop comprises a rear radiator and a low-temperature water pump, the low-temperature water circulation loop is used for cooling the engine oil cooler, the high-temperature water circulation loop comprises a front radiator and a high-temperature water pump, and the high-temperature water circulation loop is used for cooling the V-shaped cylinder body and the single cylinder covers.
Preferably, V type multi-cylinder diesel engine still includes air intake system, air intake system includes the left side intake pipe, the right side intake pipe, the left side booster, the right side booster, left side intercooler and right side intercooler, the both sides in V-arrangement cylinder block rear end top are installed respectively to left side intercooler and right side intercooler, left side booster and right side booster correspond the top of installing in the top of left side intercooler and right side intercooler and all protruding V-arrangement cylinder block, be connected with left side air cleaner on the booster of left side, be connected with right side air cleaner on the booster of right side, arrange the both sides upper end position at the V-arrangement cylinder block after left side intake pipe and right side intake pipe switch on with left side intercooler and right side intercooler respectively, low temperature water circulation loop is used for cooling left side.
Preferably, the low-temperature water pump is arranged at the front end of the V-shaped cylinder body and close to the position above the oil pump, the high-temperature water pump is arranged at the front end of the V-shaped cylinder body and close to the position above the diesel oil distributor, the low-temperature water pump, the high-temperature water pump, the oil pump and the diesel oil distributor surround a crankshaft pulley, the crankshaft pulley drives the low-temperature water pump and the high-temperature water pump respectively, cooling liquid flowing through the V-shaped cylinder body and the plurality of single cylinder heads enters the front-row radiator through a water outlet header pipe, three parallelly-connected thermostats are connected between the water outlet header pipe and the front-row radiator, the thermostat is arranged at the upper right position of the front end of the V-shaped cylinder body and is communicated with the front-row radiator.
Preferably, the low-temperature water circulation circuit includes a low-temperature water distributor fixed to a front end of the V-shaped cylinder block near above the crank pulley, and low-temperature cooling water in the low-temperature water pump is distributed to the oil cooler and the left and right intercoolers through the low-temperature water distributor.
Preferably, the left intercooler and the right intercooler are square shells, an air circulation cavity is formed in the square shell around the air circulation cavity, a cooling liquid flow channel is formed in the square shell, an additional shell is arranged on the front side of the square shell, an intermediate shell is arranged between the left intercooler and the right intercooler, two sides of the intermediate shell are connected with the inner side end faces of the additional shells of the left intercooler and the right intercooler respectively, circulation channels communicated with the cooling liquid flow channels inside the left intercooler and the right intercooler are arranged in the additional shells and the intermediate shell, a water inlet and a water outlet of each circulation channel are formed in the front end face of the intermediate shell, and the water inlet and the water outlet are communicated with the low-temperature water distributor through water pipes.
Compared with the prior art, the invention has the following beneficial effects: the cooling system belongs to a forced closed type circulating water cooling system, and the high-temperature and low-temperature components are classified and cooled, so that the air inlet temperature and the engine oil temperature can be reduced, the heat energy loss is reduced, and the engine is more oil-saving.
Drawings
FIG. 1 is a schematic structural diagram of a V-shaped cylinder block of a V-type multi-cylinder diesel engine according to the invention;
FIG. 2 is a schematic structural diagram of a single cylinder cover arranged on a V-shaped cylinder block of a V-type multi-cylinder diesel engine according to the invention;
FIG. 3 is a view showing the construction of an entire V-type multi-cylinder diesel engine according to the present invention;
FIG. 4 is a cooling schematic diagram of the cooling system of the V-type multi-cylinder diesel engine according to the present invention;
fig. 5 is a structural view of an intercooler in a cooling system of a V-type multi-cylinder diesel engine according to the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
The cooling system of the V-shaped multi-cylinder diesel engine is designed mainly for meeting the cooling requirement of a high-power high-speed diesel engine. The V-shaped multi-cylinder diesel engine has the characteristics of high power and large torque, can adopt an electric control monoblock pump technology, has large injection pressure, can accurately and dynamically adjust the fuel injection quantity, and ensures that the diesel engine has good atomization, sufficient combustion, good transient speed regulation, strong loading capacity and low fuel consumption under the condition of different loads. And one cover of each cylinder is designed, so that the strength of the cylinder cover is high.
The cooling system of the present embodiment will be described in detail by taking a 12-cylinder V-type diesel engine as an example:
as shown in fig. 1 to 3, a V-type multi-cylinder diesel engine according to an embodiment of the present invention includes a V-shaped cylinder block 100, a plurality of single cylinder heads 200, a diesel oil supply system, an air intake system, and a lubrication system, wherein the V-shaped cylinder block 100 has a plurality of two rows of cylinder bores arranged in a V-shape, an included angle between the two rows of cylinder bores of the V-shaped cylinder block 100 is 60 degrees, sleeves 101 corresponding to the number of cylinder bores are cast on the V-shaped cylinder block 100 outside the two rows of cylinder bores, the plurality of single cylinder heads 200 are respectively mounted on the cylinder head portions of the V-shaped cylinder block 100, and cold water taking jackets are provided in the V-shaped cylinder block and the plurality of single cylinder heads. The diesel oil supply system comprises a plurality of electric control monoblock pumps 14, a diesel oil tank and an oil supply pipeline, wherein the electric control monoblock pumps 14 are respectively and correspondingly installed in the sleeve 101, the electric control monoblock pumps 14 are respectively used for controlling injection of diesel oil for each cylinder, the diesel oil tank is communicated with the oil supply pipeline, the oil supply pipeline comprises a left oil pipe and a right oil pipe, and the left oil pipe and the right oil pipe are respectively and correspondingly connected through a vertical high-pressure oil pipe and the electric control monoblock pumps. The lubricating system comprises an oil pan, a pre-oil supply pump 7, an oil pump 5, an oil filter 2 and an oil cooler 1, wherein the oil pan is arranged at the bottom of the V-shaped cylinder block 100, the pre-oil supply pump 7 is arranged at the front side of the oil pan, the oil pump 5 is arranged at the left lower position of the front end of the V-shaped cylinder block 100, and the oil filter 2 and the oil cooler 1 are both arranged at the left upper position of the front end of the V-shaped cylinder block 100.
As shown in fig. 3 and 4, the cooling system of the V-type multi-cylinder diesel engine of the present embodiment includes a high-temperature water circulation circuit including a rear radiator and a low-temperature water pump 4, and a low-temperature water circulation circuit for cooling the oil cooler 1, a high-temperature water circulation circuit including a front radiator and a high-temperature water pump 9, and a high-temperature water circulation circuit for cooling the V-shaped cylinder block 100 and the plurality of single cylinder heads.
As shown in fig. 3, the V-type multi-cylinder diesel engine of the present embodiment further includes an intake system, and in fig. 3, the intake pipe, the supercharger, the intercooler, the air cleaner, and the exhaust pipe are partially labeled. The air intake system comprises a left air intake pipe, a right air intake pipe 15 and a left supercharger, right side booster 18, left side intercooler and right side intercooler 16, the both sides in V-arrangement cylinder block 100 rear end top are installed respectively to left side intercooler and right side intercooler 16, specifically, the downside of left side intercooler and right side intercooler 16 is equipped with support 506, left side intercooler and right side intercooler 16 pass through support 506 to be fixed in the both sides in V-arrangement cylinder block 100 rear end top, left side booster and right side booster 18 correspond the top of installing in left side intercooler and right side intercooler 16 and all bulge V-arrangement cylinder block 100, be connected with left side air cleaner on the booster of left side, be connected with right side air cleaner 17 on the booster 18 of right side, arrange the both sides upper end position at V-arrangement cylinder block 100 after left side intake pipe and right side intake pipe 15 switch on with left side intercooler and right side intercooler 16 respectively. Further, the left supercharger is provided with a rear turbine exhaust pipe 19, and the right supercharger 18 is also provided with a rear turbine exhaust pipe. In fact, the cooling system of the V-type multi-cylinder diesel engine further includes a corresponding exhaust system, the exhaust system includes exhaust pipes 21 (two left and right), the exhaust pipes 21 (two left and right) are correspondingly connected with the left supercharger and the right supercharger, and the exhaust pipes 21 (two left and right) are arranged at the middle position of the top of the V-shaped cylinder block 100. The low-temperature water circulation loop of the cooling system of the embodiment is used for cooling the left intercooler and the right intercooler at the same time.
As a preferred embodiment, as shown in fig. 3, the low-temperature water pump 4 is disposed at the front end of the V-shaped cylinder block 100 near the upper side of the oil pump 5, the high-temperature water pump 9 is disposed at the front end of the V-shaped cylinder block 100, the high-temperature water pump 9 and the low-temperature water pump 4 are disposed at the two sides above the crank pulley, respectively, the low-temperature water pump 4, the high-temperature water pump 9, the oil pump 5 and the oil transfer pump 8 surround the crank pulley (the crank pulley is provided with the silicone damper 6), the crank pulley drives the low-temperature water pump 4 and the high-temperature water pump 9, respectively, the coolant flowing through the V-shaped cylinder block 100 and the plurality of single cylinder heads 200 enters the front radiator 242 through the water outlet header, three parallel thermostats 23 are connected between the water outlet header and the front radiator 242, the thermostat 23 is disposed at the upper right position of the front end of the V-shaped cylinder, the radiator water pipe 20 is disposed at the top of the V-cylinder block 100.
As shown in fig. 3, as a preferred embodiment, the low temperature water circulation circuit includes a low temperature water distributor 3, the low temperature water distributor 3 is fixed at a position above the crank pulley at the front end of the V-block 100, and the low temperature water distributor 3 is provided for the purpose of cooling the oil cooler 1 and the two intercoolers at the same time. So far, as shown in fig. 4, the present embodiment proposes that high-low temperature water is used for cooling in a split manner, low-temperature water is used for cooling two intercoolers and the oil cooler 1, high-temperature water is used for cooling the cylinder block and the cylinder head, the cooling system belongs to a forced closed type circulating water cooling system, and the cooling liquid should be antifreezing and antirust. The high-temperature water and the low-temperature water are used for cooling, the low-temperature water cools the two intercoolers and the engine oil cooler, the high-temperature water cools the cylinder body and the cylinder cover, the temperature of the high-temperature water is controlled to be 75-95 ℃, and the temperature of the engine oil is controlled to be 80-110 ℃ preferably. In the system, a water pump, a fan, a radiator and an oil cooler are main components of the cooling system. When the engine runs, the crankshaft timing gear drives the high-low temperature water pump through the left idle gear and the right idle gear respectively to drive the water pump impeller to rotate, and the cooling liquid generates certain pressure under the centrifugal force action of the water pump and flows out of the outlet of the water pump. The cooling liquid pumped out by the high-temperature water pump enters the cooling water jackets of the cylinder body and the cylinder cover, and the cooling liquid flows to the water outlet main pipe after cooling the cylinder body and the cylinder cover and flows into the radiator after passing through the thermostat. The thermostat dress is in the delivery pipe tip, and thermostat automatic control temperature function when the coolant temperature is greater than 75 ℃, and the thermostat opens, and when the coolant temperature was greater than 85 ℃, the thermostat was opened fully, and the coolant liquid was whole to get into the radiator this moment, flows back to the water pump again. If the temperature of the cooling liquid is less than 75 ℃, the cooling liquid directly flows to a water pump to re-circulate cooling without heat dissipation and cooling of a radiator. The low-temperature water pump cools the two intercoolers and the engine oil cooler and then returns to the radiator for heat dissipation. The classified cooling of the high-temperature and low-temperature components can reduce the temperature of the air inlet and the temperature of the engine oil, reduce the loss of heat energy and save the oil of the engine.
As shown in fig. 5, as a preferred embodiment, this embodiment proposes a specific intercooler structure, where the left intercooler and the right intercooler are square cases 501, an air flow cavity is provided inside the square case 501, a coolant flow channel is provided inside the square case around the air flow cavity, an additional case 502 is provided on the front side of the square case 501, a middle case 503 is provided between the left intercooler and the right intercooler, both sides of the middle case 503 are respectively connected to the inner side surfaces of the additional cases 502 of the left intercooler and the right intercooler, circulation passages communicating with the coolant flow channel inside the left intercooler and the right intercooler are provided inside the additional cases 502 and the middle case 503, a water inlet 504 and a water outlet 505 of the circulation passage are provided on the front end surface of the middle case, the water inlet 504 and the water outlet 505 are communicated with a low-temperature water distributor through water pipes, and low-temperature cooling water in the low-temperature water pump 4 is distributed to the oil cooler 1 and the left intercooler and the right intercooler 16 through the low-temperature water distributor 3. In addition, an air inlet flange 507 extends upwards from the inner side wall of the square shell 501, an air outlet flange 508 extends forwards from the outer side wall of the square shell 501, the left supercharger and the right supercharger 18 are correspondingly installed above the left intercooler and the right intercooler 16, the air inlet flange 507 is conveniently connected with an air inlet of the supercharger, and the left air inlet pipe and the right air inlet pipe 15 are respectively communicated with the air outlet flange 508 on the outer side wall of the left intercooler and the right intercooler 16 and then are arranged on two sides of the V-shaped cylinder block 100.
In summary, the cooling system of the V-type multi-cylinder diesel engine of the embodiment adopts high-low temperature water split cooling, so that high-temperature and low-temperature components are classified and cooled, the air inlet temperature and the engine oil temperature can be reduced, the heat energy loss is reduced, the engine is more oil-saving, and the cooling requirements of high power and high torque of a high-power high-speed diesel engine are met.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (5)

1. The utility model provides a cooling system of V type multi-cylinder diesel engine, this V type multi-cylinder diesel engine include the V-arrangement cylinder block and install a plurality of monomer cylinder heads at the jar mouth position of V-arrangement cylinder block, the V-arrangement cylinder block with cold water cover has in a plurality of monomer cylinder heads, V type multi-cylinder diesel engine still includes lubricating system, lubricating system includes oil cooler, V type multi-cylinder diesel engine still includes air intake system, air intake system includes left side intake pipe, right side intake pipe, left side booster, right side booster, left side intercooler and right side intercooler, a serial communication port, cooling system includes high temperature water circulation loop and low temperature water circulation loop, low temperature water circulation loop includes back row radiator, low temperature water pump and low temperature water distributor, low temperature water circulation loop is used for passing through low temperature water distributor will low temperature cooling water in the low temperature water pump distributes to oil cooler with the left side intercooler and institute The right intercooler, the high-temperature water circulation circuit including a front radiator and a high-temperature water pump, the high-temperature water circulation circuit for cooling the V-block and the plurality of unit cylinder heads;
the cooling liquid flowing through the V-shaped cylinder block and the single cylinder heads enters the front row of radiators through a water outlet main pipe, three parallelly-connected thermostats are connected between the water outlet main pipe and the front row of radiators, the thermostats are arranged at the upper right position of the front end of the V-shaped cylinder block and are communicated with the front row of radiators through radiator water pipes, and the radiator water pipes are arranged at the tops of the V-shaped cylinder block;
when the temperature of the cooling liquid is higher than 85 ℃, the thermostat is completely opened, and the cooling liquid completely enters the front row radiator and then flows back to the high-temperature water pump.
2. The cooling system of a V-type multi-cylinder diesel engine according to claim 1, wherein the left intercooler and the right intercooler are respectively installed on both sides of the rear end of the V-shaped cylinder block, the left supercharger and the right supercharger are correspondingly installed above the left intercooler and the right intercooler and are both protruded out of the top of the V-shaped cylinder block, a left air cleaner is connected to the left supercharger, a right air cleaner is connected to the right supercharger, a left air inlet pipe and a right air inlet pipe are respectively communicated with the left intercooler and the right intercooler and then are arranged at the upper end positions of both sides of the V-shaped cylinder block, and the low-temperature water circulation loop is used for cooling the left intercooler and the right intercooler at the same time.
3. The cooling system of a V-type multi-cylinder diesel engine according to claim 2, wherein the low-temperature water pump is disposed at a front end of the V-shaped cylinder block near a position above the oil pump, the high-temperature water pump is disposed at a front end of the V-shaped cylinder block near a position above the diesel distributor, and the low-temperature water pump, the high-temperature water pump, the oil pump, and the diesel distributor are wound around a crank pulley which drives the low-temperature water pump and the high-temperature water pump, respectively.
4. The cooling system of a V-type multi-cylinder diesel engine according to claim 3, wherein said low temperature water distributor is fixed at a position where a front end of said V-shaped cylinder block is close to above said crank pulley.
5. The cooling system of a V-type multi-cylinder diesel engine according to claim 4, the left intercooler and the right intercooler are square shells, an air circulation cavity is arranged inside each square shell, a cooling liquid flow passage is arranged in the square shell around the air circulation cavity, an additional shell is arranged at the front side of the square shell, a middle shell is arranged between the left intercooler and the right intercooler, two sides of the middle shell are respectively connected with the inner side end surfaces of the additional shells of the left intercooler and the right intercooler, circulation passages communicated with the cooling liquid passages inside the left intercooler and the right intercooler are arranged in the additional shell and the middle shell, the water inlet and the water outlet of the circulating channel are arranged on the front end surface of the middle shell, and the water inlet and the water outlet are communicated with the low-temperature water distributor through water pipes.
CN201810122093.3A 2018-02-07 2018-02-07 Cooling system of V-shaped multi-cylinder diesel engine Active CN108223096B (en)

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PCT/CN2018/083190 WO2019153494A1 (en) 2018-02-07 2018-04-16 Cooling system for v-type multi-cylinder diesel engine

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CN110159466A (en) * 2019-07-03 2019-08-23 广西玉柴机器股份有限公司 The gas handling system of V-type multi-cylinder diesel engine
CN112682164B (en) * 2020-12-22 2022-10-21 中国北方发动机研究所(天津) Integrated intercooler of diesel engine
CN113738487B (en) * 2021-09-10 2022-09-23 潍柴动力股份有限公司 Engine advances exhaust system and has its vehicle
CN115059536B (en) * 2022-05-26 2024-03-01 中国第一汽车股份有限公司 Intelligent control cooling system and control method for V-shaped engine
CN115234365B (en) * 2022-08-02 2024-05-14 中船动力研究院有限公司 Marine high-speed engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1499898A (en) * 1966-03-02 1967-11-03 Improvements to cooling systems for supercharged internal combustion engines
ZA701750B (en) * 1969-03-25 1971-03-31 Caterpillar Tractor Co Dual cooling system for engines
JPH11257075A (en) * 1998-03-17 1999-09-21 Yanmar Diesel Engine Co Ltd Cooling device for internal combustion engine
DE102004024289A1 (en) * 2004-05-15 2005-12-15 Deere & Company, Moline Cooling system for a vehicle
AT513053B1 (en) * 2012-06-26 2014-03-15 Avl List Gmbh Internal combustion engine, in particular large diesel engine
CN106224094A (en) * 2016-08-31 2016-12-14 河北华北柴油机有限责任公司 12 cylinder water-cooled Diesel engines
CN207829980U (en) * 2018-02-07 2018-09-07 广西玉柴机器股份有限公司 The cooling system of V-type multi-cylinder diesel engine

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