CN110778389A - Engine generator composite heat dissipation system for electric transmission vehicle - Google Patents
Engine generator composite heat dissipation system for electric transmission vehicle Download PDFInfo
- Publication number
- CN110778389A CN110778389A CN201911173580.3A CN201911173580A CN110778389A CN 110778389 A CN110778389 A CN 110778389A CN 201911173580 A CN201911173580 A CN 201911173580A CN 110778389 A CN110778389 A CN 110778389A
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- Prior art keywords
- engine
- water
- radiator
- permanent magnet
- magnet generator
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Classifications
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- 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
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- 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
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/0204—Filling
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- 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
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/029—Expansion reservoirs
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- 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
- F01P11/04—Arrangements of liquid pipes or hoses
-
- 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
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- 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
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
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- 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
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The composite heat dissipation system comprises an engine, a permanent magnet generator, a composite radiator and an expansion water tank, wherein the composite radiator comprises an engine water-cooling radiator and an engine intercooling radiator, and an intercooling radiator core body and a permanent magnet generator water cooler module are arranged inside an engine intercooling radiator shell. The composite radiator is adopted, the circulating water pump in the engine is used as a power source, power is provided for heat dissipation of the permanent magnet generator, the heat dissipation problem that no power source exists in a cooling water channel of the permanent magnet generator is solved, a power structure does not need to be designed independently, integrated heat dissipation of the engine and the permanent magnet generator is achieved, design cost is reduced, and reliability of a system is improved.
Description
Technical Field
The invention belongs to the technical field of heat dissipation systems, and particularly relates to a composite heat dissipation system for an engine generator of an electric transmission vehicle.
Background
The heat dissipation system of an electric drive rail car is a key component of a vehicle power system. For an electric drive rail car, an engine and a permanent magnet generator are provided, and the engine and the permanent magnet generator are respectively provided with a respective heat dissipation system. The efficiency of temperature to permanent magnet generator influences greatly, because the permanent magnet generator cooling water course that the electricity transmission car selected does not have the circulation power supply, needs outside independent increase power supply just can realize the heat dissipation circulation, and permanent magnet generator mainly adopts traditional plus circulating pump mode to realize cooling system's circulation now, and design cost is high, and system reliability depends on the performance of circulating pump, and the potential risk is big, reduces the reliability of system. There is therefore a need for improvements.
Disclosure of Invention
The technical problems solved by the invention are as follows: the invention provides a composite heat dissipation system for an engine generator of an electric transmission vehicle, which adopts a composite heat radiator, utilizes a circulating water pump in an engine as a power source to provide power for heat dissipation of a permanent magnet generator, solves the problem of heat dissipation without the power source in a cooling water channel of the permanent magnet generator, does not need to design a power structure for the permanent magnet generator independently, realizes integrated heat dissipation of the engine and the permanent magnet generator, reduces the design cost and improves the reliability of the system.
The technical scheme adopted by the invention is as follows: the composite heat dissipation system for the engine generator of the electric vehicle comprises an engine, a permanent magnet generator, a composite radiator and an expansion water tank, wherein the composite radiator comprises an engine water-cooling radiator and an engine intercooling radiator, and an intercooling radiator core body and a permanent magnet generator water cooler module are arranged in parallel in an engine intercooling radiator shell; an intercooling air outlet on the engine intercooling radiator is connected with an engine air inlet through an engine intercooling air inlet pipe, an engine air outlet is connected with an intercooling air inlet on the engine intercooling radiator through an engine intercooling air outlet pipe, and the engine intercooling air inlet pipe and the engine intercooling air outlet pipe form an engine intercooling heat dissipation pipeline; the water-cooled water outlet on the engine water-cooled radiator is connected with the water inlet of the engine through an engine water inlet pipe, the water outlet of the engine is connected with the water-cooled water inlet on the engine water-cooled radiator through an engine water outlet pipe, and the engine water inlet pipe and the engine water outlet pipe form an engine water-cooled heat dissipation pipeline; the composite water inlet of the water cooler module of the permanent magnet generator is connected with the water outlet end of the water circulating pump of the engine through a water taking pipe, the composite water outlet of the water cooler module of the permanent magnet generator is connected with the water inlet of the permanent magnet generator through a water outlet pipe of a radiator, the water outlet of the permanent magnet generator is connected with the water inlet of the water circulating pump of the engine through a water return pipe, and the water taking pipe, the water outlet pipe of the radiator and the water return pipe form a heat dissipation.
The technical scheme is further limited, a water-cooling exhaust port is arranged on an engine water-cooling radiator of the composite radiator, and a composite water exhaust port is arranged on the composite radiator corresponding to the water cooler module of the permanent magnet generator; the composite radiator also comprises a radiator shell, a set of internal radiating fins are respectively arranged in the radiator shell corresponding to the engine water-cooling radiator, the engine inter-cooling radiator and the permanent magnet generator water cooler module, the fan is arranged at the rear part of the internal radiating fins, the fan is shielded by the fan protective cover, the driving motor is arranged at the rear end of the fan protective cover, the output end of the driving motor is connected with the input end of the fan to drive the fan to rotate, the driving motor is powered by a three-phase alternating current power supply and is controlled by a direct current 24V power supply, the driving motor controls the start and stop of the fan through the wiring of the integrated junction box, the internal radiating fins adopt an aluminum plate-fin structure, the fan adopts a blowing fan or an air suction fan, the core body of the inter-cooling radiator of the engine and the water cooler module of the permanent magnet generator are arranged in parallel, and the ventilation and cooling of the core body and the water cooler module of the permanent magnet generator are controlled by a fan.
The technical scheme is further limited, an exhaust port I of the expansion water tank is connected with an engine exhaust port through an engine exhaust pipe, exhaust ports II and III of the expansion water tank are connected with a composite radiator exhaust port through a radiator exhaust pipe I and a radiator exhaust pipe II, a water replenishing port of the expansion water tank is connected with an engine water replenishing port through an engine water replenishing pipe, an expansion water tank overflow pipe is further arranged on the expansion water tank, and a liquid level mirror and a pressure release valve are arranged on the expansion water tank.
Compared with the prior art, the invention has the advantages that:
1. adopt a compound radiator in this scheme, including the cold radiator in engine water-cooling radiator and the engine, wherein, in the cold radiator casing of engine inside set up well cold radiator core and permanent magnet generator water cooler module side by side, engine water-cooling radiator divide into two sub-pipelines, is engine water-cooling heat dissipation pipeline and permanent magnet generator heat dissipation pipeline respectively, and permanent magnet generator water cooling system heat dissipation principle does: the internal circulating water pump of the engine is used as a power source, a part of cooling water is taken from the engine cylinder body and enters the water cooler module of the permanent magnet generator, the cooling water enters the heat dissipation pipeline of the permanent magnet generator after heat dissipation, and the cooling water returns to the water inlet of the circulating water pump of the engine after cooling the permanent magnet generator and participates in the next circulation, so that the problem of heat dissipation without the power source in a cooling water channel of the permanent magnet generator is solved, the integrated heat dissipation of the engine and the permanent magnet generator is realized, the design cost is reduced, and the.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a bottom view of the structure of the present invention;
FIG. 3 is a right side view of the structure of the present invention;
FIG. 4 is a schematic structural view of the composite heat sink of the present invention;
FIG. 5 is a front view of the composite heat sink of the present invention;
FIG. 6 is an exploded view of the composite heat sink of the present invention;
FIG. 7 is a schematic view showing the construction of an expansion tank according to the present invention;
FIG. 8 is a schematic diagram of a heat dissipation system of the present invention;
FIG. 9 is a graph of performance of the water circulating pump of the engine according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The connection modes of the components in the following embodiments are all conventional connection modes unless otherwise specified; the components used in the following examples are commercially available unless otherwise specified.
In the description of the present invention, it is to be noted that the terms "mounted," "connected," "disposed," and "provided" are to be construed broadly unless otherwise specifically stated or limited. For example, the connecting and arranging can be fixed, or can be detachable, or integrally connected and arranged. May be a mechanical connection; may be directly connected or may be indirectly connected through other intermediate members. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-9, embodiments of the present invention are described,
the composite heat dissipation system for the engine generator of the electric vehicle comprises an engine 1, a permanent magnet generator 2, a composite radiator 3 and an expansion water tank 4, wherein the composite radiator 3 comprises an engine water-cooling radiator 17 and an engine intercooling radiator 18, and an intercooling radiator core and a permanent magnet generator water cooler module 19 are arranged in parallel in a shell of the engine intercooling radiator 18; an intercooling air outlet 24 on the engine intercooling radiator 18 is connected with an air inlet of the engine 1 through an intercooling air inlet pipe 6, an air outlet of the engine 1 is connected with an intercooling air inlet 23 on the engine intercooling radiator 18 through an intercooling air outlet pipe 5, and the intercooling air inlet pipe 6 and the intercooling air outlet pipe 5 form an intercooling heat dissipation pipeline of the engine; the water-cooled heat dissipation device is characterized in that a water-cooled water outlet 20 on the engine water-cooled radiator 17 is connected with a water inlet of the engine 1 through an engine water inlet pipe 8, a water outlet of the engine 1 is connected with a water-cooled water inlet 21 on the engine water-cooled radiator 17 through an engine water outlet pipe 7, and the engine water inlet pipe 8 and the engine water outlet pipe 7 form an engine water-cooled heat dissipation pipeline; the compound water inlet 25 of permanent magnet generator water cooler module 19 and the water circulating pump of engine 1 water outlet end pass through water intaking pipe 9 and are connected, the compound delivery port 26 and the 2 water inlets of permanent magnet generator water cooler module 19 pass through radiator outlet pipe 14 and connect, 2 delivery ports of permanent magnet generator pass through wet return 11 with the 1 water circulating pump water inlet of engine and are connected, water intaking pipe 9, radiator outlet pipe 14 and wet return 11 form permanent magnet generator heat dissipation pipeline.
As shown in fig. 6, a water-cooled exhaust port 22 is arranged on the engine water-cooled radiator 17 of the composite radiator 3, and a composite water exhaust port 27 is arranged on the composite radiator 3 corresponding to the permanent magnet generator water cooler module 19; the composite radiator 3 also comprises a radiator shell 28, a set of internal radiating fins 29 are respectively arranged in the radiator shell 28 corresponding to the engine water-cooling radiator 17, the engine inter-cooling radiator 18 and the permanent magnet generator water cooler module 19, the fan 30 is arranged at the rear part of the internal radiating fins 29, the fan 30 is shielded by a fan guard 31, a driving motor 32 is installed at the rear end of the fan guard 31, the output end of the driving motor 32 is connected with the input end of the fan 30 to drive the fan to rotate, the driving motor 32 adopts a three-phase alternating current power supply to supply power and is controlled by a direct current 24V power supply, the driving motor 32 controls the start and stop of the fan 30 through the wiring of the integrated junction box 33, the internal radiating fins 29 adopt an aluminum plate-fin structure, the fan 30 adopts an air blowing type fan or an air suction type fan, the core of the engine intercooler 18 and the water cooler module 19 of the permanent magnet generator are arranged in parallel, and the ventilation and cooling are controlled by a fan.
As shown in fig. 2, an exhaust port i of the expansion tank 4 is connected with an exhaust port of the engine 1 through an engine exhaust pipe 12, exhaust ports ii and iii of the expansion tank 4 are connected with an exhaust port of the composite radiator 3 through a radiator exhaust pipe i 13 and a radiator exhaust pipe ii 14, a water replenishing port of the expansion tank 4 is connected with a water replenishing port of the engine 1 through an engine water replenishing pipe 15, an expansion tank overflow pipe 16 is further arranged on the expansion tank 4, and as shown in fig. 7, a liquid level mirror 34 and a pressure release valve 35 are arranged on the expansion tank.
The invention adopts a composite radiator, which comprises an engine water-cooling radiator 17 and an engine intercooling radiator 16, wherein an intercooling radiator core body and a permanent magnet generator water cooler module 19 are arranged in parallel in a shell of the engine intercooling radiator 18, the engine water-cooling radiator 17 is divided into two sub-pipelines which are respectively an engine water-cooling heat dissipation pipeline and a permanent magnet generator heat dissipation pipeline, and the heat dissipation principle of a permanent magnet generator water-cooling system is as follows: as shown in fig. 8, a circulating water pump inside the engine 1 is used as a power source, a part of cooling water is taken from a cylinder body of the engine 1 and enters a water cooler module of the permanent magnet generator 2, the cooling water enters a heat dissipation pipeline of the permanent magnet generator after heat dissipation, and the cooling water returns to a water inlet of the circulating water pump of the engine 1 after cooling the permanent magnet generator 2 to participate in the next circulation. The problem of the heat dissipation that does not have the power supply in the permanent magnet generator cooling water course is solved, realize the integrated heat dissipation of engine and permanent magnet generator, reduce design cost, improve the reliability of system.
The flow of the circulating water pump of the engine 1 is different at each rotating speed, and the control of the heat dissipation water intake amount of the permanent magnet generator 2 is particularly critical in order to avoid the influence on the performance of the engine 1 caused by excessive heat dissipation water intake of the permanent magnet generator 2. As shown in fig. 9, it is an engine water pump performance curve, and the following table shows the flow rate and pressure difference of the cooling water required by each rotation speed of the permanent magnet generator:
according to the chart, the performance of the engine 1 cannot be influenced when the permanent magnet generator 2 obtains the cooling water according to the requirement, and the water flow rate of the cooling water of the permanent magnet generator 2 is controlled by adopting water pipes with different drift diameters.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. A compound cooling system of engine generator for electricity transmission car, including engine (1), permanent magnet generator (2), compound radiator (3) and expansion tank (4), its characterized in that: the composite radiator (3) comprises an engine water-cooling radiator (17) and an engine intercooling radiator (18), wherein an intercooling radiator core body and a permanent magnet generator water cooler module (19) are arranged in parallel in a shell of the engine intercooling radiator (18); an intercooling air outlet (24) on the engine intercooling radiator (18) is connected with an air inlet of the engine (1) through an intercooling air inlet pipe (6), an air outlet of the engine (1) is connected with an intercooling air inlet (23) on the engine intercooling radiator (18) through an intercooling air outlet pipe (5), and the intercooling air inlet pipe (6) and the intercooling air outlet pipe (5) form an intercooling heat dissipation pipeline of the engine; a water-cooled water outlet (20) on the engine water-cooled radiator (17) is connected with a water inlet of the engine (1) through an engine water inlet pipe (8), a water outlet of the engine (1) is connected with a water-cooled water inlet (21) on the engine water-cooled radiator (17) through an engine water outlet pipe (7), and the engine water inlet pipe (8) and the engine water outlet pipe (7) form an engine water-cooled heat dissipation pipeline; the water inlet (25) of the water cooler module (19) of the permanent magnet generator and the water outlet end of the water circulating pump of the engine (1) are connected through a water intake pipe (9), the composite water outlet (26) of the water cooler module (19) of the permanent magnet generator and the water inlet of the permanent magnet generator (2) are connected through a radiator water outlet pipe (14), the water outlet of the permanent magnet generator (2) is connected with the water inlet end of the water circulating pump of the engine (1) through a water return pipe (11), and the water intake pipe (9), the radiator water outlet pipe (14) and the water return pipe (11) form a heat dissipation pipeline of the permanent magnet generator.
2. The engine-generator composite heat dissipation system for electric vehicles according to claim 1, wherein: a water-cooling exhaust port (22) is formed in an engine water-cooling radiator (17) of the composite radiator (3), and a composite water exhaust port (27) is formed in the composite radiator (3) corresponding to the water cooler module (19) of the permanent magnet generator; the composite radiator (3) further comprises a radiator shell (28), a set of internal radiating fins (29) are arranged inside the radiator shell (28) and correspond to the engine water-cooling radiator (17), the engine inter-cooling radiator (18) and the permanent magnet generator water cooler module (19) respectively, the fan (30) is arranged at the rear part of the internal radiating fins (29), the fan (30) is shielded through a fan protective cover (31), a driving motor (32) is arranged at the rear end of the fan protective cover (31), the output end of the driving motor (32) is connected with the input end of the fan (30) to drive the fan (30) to rotate, the driving motor (32) is powered by a three-phase alternating current power supply and controlled by a direct current 24V power supply, the driving motor (32) controls the start and stop of the fan (30) through the wiring of an integrated junction box (33), and the internal radiating fins (, the fan (30) adopts a blowing fan or a suction fan; the core of the engine inter-cooling radiator (18) and the water cooler module (19) of the permanent magnet generator are arranged in parallel, and ventilation and cooling are controlled by a fan (30).
3. The engine-generator composite heat dissipation system for electric vehicles according to claim 2, wherein: the exhaust port I of expansion tank (4) is connected with the exhaust port of engine (1) through engine exhaust pipe (12), the exhaust port II and III of expansion tank (4) are connected with the exhaust port of composite radiator (3) through radiator exhaust pipe I (13) and radiator exhaust pipe II (14), the water replenishing port of expansion tank (4) is connected with the water replenishing port of engine (1) through engine water replenishing pipe (15), still be equipped with expansion tank overflow pipe (16) on expansion tank (4), be equipped with liquid level mirror (34) and relief valve (35) on expansion tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173580.3A CN110778389A (en) | 2019-11-26 | 2019-11-26 | Engine generator composite heat dissipation system for electric transmission vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173580.3A CN110778389A (en) | 2019-11-26 | 2019-11-26 | Engine generator composite heat dissipation system for electric transmission vehicle |
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| Publication Number | Publication Date |
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| CN110778389A true CN110778389A (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911173580.3A Pending CN110778389A (en) | 2019-11-26 | 2019-11-26 | Engine generator composite heat dissipation system for electric transmission vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561384A (en) * | 2020-05-20 | 2020-08-21 | 中车株洲电力机车有限公司 | Power pack cooling system, self-cleaning method and rail transit vehicle |
-
2019
- 2019-11-26 CN CN201911173580.3A patent/CN110778389A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561384A (en) * | 2020-05-20 | 2020-08-21 | 中车株洲电力机车有限公司 | Power pack cooling system, self-cleaning method and rail transit vehicle |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20211104 Address after: 721003 Bao Fu Road, Jintai District, Baoji, Shaanxi Province, No. 118 Applicant after: BAOJI CRRC TIMES ENGINEERING MACHINERY Co.,Ltd. Applicant after: China National Railway Group Co.,Ltd. Address before: 721003 Bao Fu Road, Jintai District, Baoji, Shaanxi Province, No. 118 Applicant before: BAOJI CRRC TIMES ENGINEERING MACHINERY Co.,Ltd. |
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