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CN118959137A - A cooling system for diesel locomotive based on two-stage supercharging and EGR cooler - Google Patents

A cooling system for diesel locomotive based on two-stage supercharging and EGR cooler Download PDF

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Publication number
CN118959137A
CN118959137A CN202410927921.6A CN202410927921A CN118959137A CN 118959137 A CN118959137 A CN 118959137A CN 202410927921 A CN202410927921 A CN 202410927921A CN 118959137 A CN118959137 A CN 118959137A
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CN
China
Prior art keywords
low
temperature
pressure
water
cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410927921.6A
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Chinese (zh)
Inventor
闫玉凤
杨田云
米贵
张洪磊
郑永强
杨青青
张亮亮
方浩
吴娟
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CRRC Qishuyan Co Ltd
Original Assignee
CRRC Qishuyan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRRC Qishuyan Co Ltd filed Critical CRRC Qishuyan Co Ltd
Priority to CN202410927921.6A priority Critical patent/CN118959137A/en
Publication of CN118959137A publication Critical patent/CN118959137A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/08—Arrangements of lubricant coolers
    • 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
    • F01P3/18—Arrangements or mounting of liquid-to-air 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
    • F02B29/0406—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
    • 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
    • F02B29/0443—Layout of the coolant or refrigerant circuit
    • 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
    • F02B29/0475—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location
    • 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
    • F02B29/0493—Controlling the air charge temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/182—Arrangements or mounting of liquid-to-air heat-exchangers with multiple heat-exchangers
    • 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
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/185—Arrangements or mounting of liquid-to-air heat-exchangers arranged in parallel
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

The invention relates to the technical field of diesel locomotive cooling systems based on two-stage supercharging and EGR coolers, in particular to a diesel locomotive cooling system based on two-stage supercharging and EGR coolers, which comprises a diesel engine, and a high-temperature cooling system and a low-temperature cooling system which are arranged in the diesel locomotive. The design leads the high-temperature water cooled by the cylinder cover into the EGR cooler through the cooling pipeline, and is used for cooling the high-temperature exhaust gas in the EGR cooler. Meanwhile, a composite intercooling system is adopted, and the high-temperature water cooling high-low-pressure intercooler of the EGR cooler is firstly used for cooling to reduce the flow of the low-temperature water system cooling intercooler, so that the number of low-temperature heat dissipation single sections of the locomotive is reduced, and the cooling water system of the diesel locomotive is optimized. Through reasonable heat load distribution of the diesel engine, the cooling water cavities of the high-temperature and low-temperature circulating systems of the high-pressure intercooler and the low-pressure intercooler are designed, the flow of the cooling water pump of the high-temperature and low-temperature cooling system of the diesel engine is regulated, the auxiliary power consumption of the cooling system is reduced, and the heat efficiency of the diesel engine is improved.

Description

Diesel locomotive cooling system based on two-stage supercharging and EGR cooler
Technical Field
The invention relates to the technical field of diesel locomotive cooling systems based on two-stage supercharging and EGR coolers, in particular to a diesel locomotive cooling system based on two-stage supercharging and EGR coolers.
Background
The diesel engine adopts a two-stage supercharging and EGR system, so that the full-working condition performance of the diesel engine, in particular the dynamic performance and the fuel economy of a low-speed working condition and a partial load working condition, can be effectively improved. By introducing a small amount of combusted exhaust gas into the EGR cooler, the temperature in the combustion chamber is reduced, and the nitrogen oxide content in the exhaust emissions is reduced, thereby increasing the emission level of the diesel engine. However, since the temperature of the exhaust gas discharged from the cylinder is very high, it is necessary to introduce a cooler in the EGR line and introduce a coolant to reduce the temperature of the exhaust gas. The technology of the invention is produced in the development process of the diesel engine, and needs to realize reasonable heat load distribution of the diesel engine, so that the cooling problem of high-temperature waste gas in an EGR cooler is solved, and the design of a high-temperature heat dissipation single section and a low-temperature heat dissipation single section of a locomotive can be optimized by using a cooling water pump of a prototype machine, thereby achieving the purpose of reducing the design and development cost.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a diesel locomotive cooling system based on a two-stage supercharging and EGR cooler.
The technical scheme adopted for solving the technical problems is as follows: an internal combustion locomotive cooling system based on a two-stage supercharging and EGR cooler comprises a diesel engine, a high-temperature cooling system and a low-temperature cooling system, wherein the high-temperature cooling system and the low-temperature cooling system are arranged inside the internal combustion locomotive; the diesel engine is internally provided with a front-end integrated box body, a high-pressure intercooler and a low-pressure intercooler; the high-temperature cooling system comprises a high-temperature water pump, an EGR cooler, a high-temperature cooling pipeline and a high-temperature heat dissipation single section, wherein water flows into a cylinder head water inlet pipe of the diesel engine from a front-end integrated box body after the pressure of the water is increased by the high-temperature water pump, all cylinder liners on the left side and the right side are introduced into the EGR cooler through a cylinder head water outlet main pipe after cooled, and then enter a high-pressure intercooler and a low-pressure intercooler in the diesel engine respectively through pipelines after entering the front-end integrated box body again, and the high-pressure supercharger and the low-pressure supercharger arranged on one side of the high-pressure intercooler and the low-pressure intercooler are used for heat dissipation after the high-temperature cooling water is gathered and then enter the locomotive high-temperature heat dissipation single section for heat dissipation, and then the high-temperature water is sent to the high-temperature water pump for continuous circulation; the low-temperature cooling system comprises a low-temperature water pump, an engine oil heat exchanger, a low-temperature cooling pipeline and a low-temperature heat dissipation single section, wherein water flows into a high-pressure intercooler and a low-pressure intercooler in the diesel engine from a front-end integrated box body after the pressure of the water flows through the low-temperature water pump is increased, low-temperature cooling water enters the engine oil heat exchanger after being summarized, then enters the locomotive low-temperature heat dissipation single section for heat dissipation, and finally is sent to the low-temperature water pump for continuous circulation.
According to another embodiment of the invention, the front-end integrated box is further provided with three groups of water outlet pipes and three groups of water inlet pipes, wherein the three groups of water outlet pipes are a water outlet pipe I, a water outlet pipe II and a water outlet pipe III respectively; the three groups of water inlet pipes are a water inlet pipe I, a water inlet pipe II and a water inlet pipe III respectively.
According to another embodiment of the invention, the first water outlet pipe is divided into two cavities in the front-end integrated box body, and is respectively connected with a group of cylinder head water inlet pipes, each group of cylinder head water inlet pipes is connected with each cylinder of the diesel engine, each cylinder of the diesel engine is communicated with a cylinder head water outlet collecting pipe, the cylinder head water outlet collecting pipe is communicated with the EGR cooler, and the EGR cooler is collected into the front-end integrated box body through the first water inlet pipe.
According to another embodiment of the invention, the engine oil heat exchanger is characterized in that the second water outlet pipe is divided into four groups of branch pipes at the tail end, and is respectively connected with the two groups of low-pressure intercoolers and the two groups of high-pressure intercoolers, and is converged into the engine oil exchanger, a locomotive low-temperature heat dissipation single machine and a low-temperature water pump, and is connected with the front-end integrated box body through the second water inlet pipe.
According to another embodiment of the invention, the three ends of the water outlet pipe are divided into seven groups of branch pipes, and are respectively connected with two groups of low-pressure intercoolers, two groups of high-pressure intercoolers, one group of high-pressure superchargers and two groups of low-pressure superchargers, and are converged into a locomotive high-temperature heat dissipation single section and a high-temperature water pump, and are connected with a front-end integrated box body through three water inlet pipes.
According to another embodiment of the invention, further comprising, a throttle plate is added to the cooling line flowing into the high-pressure intercooler.
The invention has the beneficial effects that the high-temperature water cooled by the cylinder cover is completely introduced into the EGR cooler through the cooling pipeline to cool the high-temperature exhaust gas in the EGR cooler. Meanwhile, a composite intercooling system is adopted, and the high-temperature water cooling high-low-pressure intercooler of the EGR cooler is firstly used for cooling to reduce the flow of the low-temperature water system cooling intercooler, so that the number of low-temperature heat dissipation single sections of the locomotive is reduced, and the cooling water system of the diesel locomotive is optimized. Because the resistance of the high-pressure intercooler is far smaller than that of the low-pressure intercooler, the high-pressure intercooler parts in the two cooling circulation systems are additionally provided with throttle plates for realizing flow matching of the high-pressure intercooler and the low-pressure intercooler. Through reasonable heat load distribution of the diesel engine, the cooling water cavities of the high-temperature and low-temperature circulating systems of the high-pressure intercooler and the low-pressure intercooler are designed, the flow of the cooling water pump of the high-temperature and low-temperature cooling system of the diesel engine is regulated, the auxiliary power consumption of the cooling system is reduced, and the heat efficiency of the diesel engine is improved.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
In the figure, a diesel engine, a high-temperature cooling system, a low-temperature cooling system and a high-temperature cooling system are shown as the components 1 and 2.
Detailed Description
As shown in fig. 1, a cooling system of an internal combustion locomotive based on a two-stage supercharging and EGR cooler comprises a diesel engine 1, and a high-temperature cooling system 2 and a low-temperature cooling system 3 which are arranged inside the internal combustion locomotive; the diesel engine 1 is internally provided with a front-end integrated box body, a high-pressure intercooler and a low-pressure intercooler; the high-temperature cooling system 2 comprises a high-temperature water pump, an EGR cooler, a high-temperature cooling pipeline and a high-temperature heat dissipation single joint, wherein water flows through the high-temperature water pump, flows into a cylinder head water inlet pipe of the diesel engine 1 from a front-end integrated box body after the pressure is increased, is totally introduced into the EGR cooler through a cylinder head water outlet main pipe after cooling cylinder liners at the left side and the right side, respectively enters a high-pressure intercooler and a low-pressure intercooler in the diesel engine 1 through pipelines after being re-converged into the front-end integrated box body, and enters a high-pressure booster and a low-pressure booster arranged at one side of the high-pressure intercooler and the low-pressure intercooler for heat dissipation after being summarized, and then is sent to the high-temperature water pump for continuous circulation; the low-temperature cooling system 3 comprises a low-temperature water pump, an engine oil heat exchanger, a low-temperature cooling pipeline and a low-temperature heat dissipation single section, wherein water flows into a high-pressure intercooler and a low-pressure intercooler in the diesel engine 1 from a front-end integrated box body after the pressure of the water flows through the low-temperature water pump is increased, the low-temperature cooling water enters the engine oil heat exchanger after being summarized, then enters the locomotive low-temperature heat dissipation single section for heat dissipation, and finally is sent to the low-temperature water pump for continuous circulation.
According to another embodiment of the invention, the front-end integrated box is further provided with three groups of water outlet pipes and three groups of water inlet pipes, wherein the three groups of water outlet pipes are a water outlet pipe I, a water outlet pipe II and a water outlet pipe III respectively; the three groups of water inlet pipes are a water inlet pipe I, a water inlet pipe II and a water inlet pipe III respectively.
According to another embodiment of the invention, the first water outlet pipe is divided into two cavities in the front-end integrated box body, and is respectively connected with a group of cylinder head water inlet pipes, each group of cylinder head water inlet pipes is connected with each cylinder of the diesel engine, each cylinder of the diesel engine is communicated with a cylinder head water outlet collecting pipe, the cylinder head water outlet collecting pipe is communicated with the EGR cooler, and the EGR cooler is collected into the front-end integrated box body through the first water inlet pipe.
According to another embodiment of the invention, the engine oil heat exchanger is characterized in that the second water outlet pipe is divided into four groups of branch pipes at the tail end, and is respectively connected with the two groups of low-pressure intercoolers and the two groups of high-pressure intercoolers, and is converged into the engine oil exchanger, a locomotive low-temperature heat dissipation single machine and a low-temperature water pump, and is connected with the front-end integrated box body through the second water inlet pipe.
According to another embodiment of the invention, the front-end integrated box is further connected with two groups of low-pressure intercoolers, two groups of high-pressure intercoolers, one group of high-pressure superchargers and two groups of low-pressure superchargers respectively, and is converged into a locomotive high-temperature heat dissipation single-section high-temperature water pump and is connected with the front-end integrated box body through a water inlet pipe.
According to another embodiment of the invention, further comprising, a throttle plate is added to the cooling line flowing into the high-pressure intercooler.
Specifically, because the resistance of the high-pressure intercooler is far smaller than that of the low-pressure intercooler, the high-pressure intercooler parts in the two cooling circulation systems are additionally provided with throttle plates for realizing flow matching of the high-pressure intercooler and the low-pressure intercooler.
The specific operation process is that the structure of a high-temperature water circulation system of the diesel engine 1is changed, and high-temperature water collected by a cylinder head is totally introduced into an EGR cooler and then enters a high-pressure intercooler, a low-pressure intercooler, a high-grade supercharger and a low-pressure supercharger; the high-pressure intercooler and the low-pressure intercooler of the diesel engine 1 are composed of two paths of cooling pipelines of low-temperature water and high-temperature water, a throttle plate is additionally arranged on the cooling pipeline of the high-pressure intercooler with smaller resistance and used for adjusting the flow distribution of cooling water of the high-pressure intercooler and the low-pressure intercooler, and the flow of the low-temperature water entering the intercooler is reduced to enable the sum of the heat taken away by the low-temperature water and the heat taken away by the newly added high-temperature water to be consistent with the heat taken away by the original single low-temperature cooling, so that the circulation of the high-temperature cooling system 2 and the low-temperature cooling system 3 is realized.
The above description is illustrative of the invention and is not to be construed as limiting, and it will be understood by those skilled in the art that many modifications, changes or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (6)

1. An internal combustion locomotive cooling system based on a two-stage supercharging and EGR cooler is characterized by comprising a diesel engine (1), and a high-temperature cooling system (2) and a low-temperature cooling system (3) which are arranged in the internal combustion locomotive; the diesel engine (1) is internally provided with a front-end integrated box body, a high-pressure intercooler and a low-pressure intercooler;
The high-temperature cooling system (2) comprises a high-temperature water pump, an EGR cooler, a high-temperature cooling pipeline and a high-temperature heat dissipation single section, wherein water flows into a cylinder head water inlet pipe of the diesel engine (1) from a front-end integrated box body after the pressure of the water flows through the high-temperature water pump is increased, air jackets at the left side and the right side are cooled, and air jackets and cylinder heads are all led into the EGR cooler through a cylinder head water outlet main pipe, and then are led into a high-pressure intercooler and a low-pressure intercooler in the diesel engine (1) respectively through pipelines after being led into the front-end integrated box body again, and a high-pressure booster and a low-pressure booster which are arranged at one side of the high-pressure intercooler and the low-pressure intercooler are led into the locomotive high-temperature heat dissipation single section for heat dissipation after the high-temperature cooling water is summarized, and then the high-temperature cooling water is sent to the high-temperature water pump for continuous circulation;
The low-temperature cooling system (3) comprises a low-temperature water pump, an engine oil heat exchanger, a low-temperature cooling pipeline and a low-temperature heat dissipation single section, wherein water flows into a high-pressure intercooler and a low-pressure intercooler in the diesel engine (1) from a front-end integrated box body after the pressure of the water flow is increased by the low-temperature water pump, and the low-temperature cooling water enters the engine oil heat exchanger after being summarized, then enters the locomotive low-temperature heat dissipation single section for heat dissipation, and finally is sent to the low-temperature water pump for continuous circulation.
2. The cooling system of the diesel locomotive based on the two-stage supercharging and EGR cooler according to claim 1, wherein the front-end integrated box body is provided with three groups of water outlet pipes and three groups of water inlet pipes, and the three groups of water outlet pipes are a water outlet pipe I, a water outlet pipe II and a water outlet pipe III respectively; the three groups of water inlet pipes are a water inlet pipe I, a water inlet pipe II and a water inlet pipe III respectively.
3. The cooling system of the diesel locomotive based on the two-stage supercharging and EGR cooler according to claim 2, wherein the first water outlet pipe is divided into two cavities in the front-end integrated box body and is respectively connected with a group of cylinder head water inlet pipes, each group of cylinder head water inlet pipes is connected with each cylinder of the diesel engine, each cylinder of the diesel engine is communicated with a cylinder head water outlet collecting pipe, the cylinder head water outlet collecting pipe is communicated with the EGR cooler, and the first water outlet pipe is communicated into the front-end integrated box body.
4. The cooling system of the diesel locomotive based on the two-stage supercharging and EGR cooler according to claim 2, wherein the second water outlet pipe is divided into four groups of branch pipes at the tail end, is respectively connected with the two groups of low-pressure intercoolers and the two groups of high-pressure intercoolers, and is converged into an engine oil exchanger, a locomotive low-temperature heat dissipation single machine and a low-temperature water pump, and is connected with the front-end integrated box body through the second water inlet pipe.
5. The cooling system of the diesel locomotive based on the two-stage supercharging and EGR cooler according to claim 2, wherein the three ends of the water outlet pipe are divided into seven groups of branch pipes which are respectively connected with two groups of low-pressure intercoolers, two groups of high-pressure intercoolers, one group of high-pressure superchargers and two groups of low-pressure superchargers, and are converged into a locomotive high-temperature heat dissipation single-section high-temperature water pump, and are connected with a front-end integrated box body through three water inlet pipes.
6. The two-stage charge and EGR cooler based cooling system for diesel locomotives according to claim 1, wherein a throttle orifice plate is added to the cooling line flowing into said high pressure intercooler.
CN202410927921.6A 2024-07-11 2024-07-11 A cooling system for diesel locomotive based on two-stage supercharging and EGR cooler Pending CN118959137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410927921.6A CN118959137A (en) 2024-07-11 2024-07-11 A cooling system for diesel locomotive based on two-stage supercharging and EGR cooler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410927921.6A CN118959137A (en) 2024-07-11 2024-07-11 A cooling system for diesel locomotive based on two-stage supercharging and EGR cooler

Publications (1)

Publication Number Publication Date
CN118959137A true CN118959137A (en) 2024-11-15

Family

ID=93390203

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410927921.6A Pending CN118959137A (en) 2024-07-11 2024-07-11 A cooling system for diesel locomotive based on two-stage supercharging and EGR cooler

Country Status (1)

Country Link
CN (1) CN118959137A (en)

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