CN110107384A - A kind of energy recovery utilizing system being classified separation output based on low speed machine exhaust energy - Google Patents

A kind of energy recovery utilizing system being classified separation output based on low speed machine exhaust energy Download PDF

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Publication number
CN110107384A
CN110107384A CN201910393546.0A CN201910393546A CN110107384A CN 110107384 A CN110107384 A CN 110107384A CN 201910393546 A CN201910393546 A CN 201910393546A CN 110107384 A CN110107384 A CN 110107384A
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China
Prior art keywords
exhaust
cryopumping
temperature
energy
outlet
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CN201910393546.0A
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Chinese (zh)
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CN110107384B (en
Inventor
路勇
苗立贤
李建
侯冬岩
齐华岳
潘振嘉
王正祎
曹鹏程
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Harbin Engineering University
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Harbin Engineering University
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08Other arrangements or adaptations of exhaust conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F01N5/025Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat the device being thermoelectric generators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02EGR systems specially adapted for supercharged engines
    • F02M26/09Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/16Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Supercharger (AREA)

Abstract

The purpose of the present invention is to provide a kind of energy recovery utilizing systems that separation output is classified based on low speed machine exhaust energy, including cylinder, high-temperature exhaust air general pipeline, cryopumping general pipeline, high-temperature residual heat utilizes system, low temperature heat system, an exhaust classification seperating vale is respectively mounted after the exhaust valve of each cylinder, each exhaust classification seperating vale is all connected with its hot exhaust manifolds and cryopumping manifold for corresponding to cylinder, all hot exhaust manifolds are connected to high-temperature exhaust air general pipeline, all cryopumping manifolds are connected to cryopumping general pipeline, the outlet of high-temperature exhaust air general pipeline connects booster turbine import, connection high-temperature residual heat in booster turbine outlet utilizes system, the outlet of cryopumping general pipeline is separately connected EGR control valve and cryopumping outlet, cryopumping outlet connects low temperature heat system.The present invention solves different discarded heat recovery loads for the contradiction of different delivery temperature demands, while exhaust energy can be improved and recycle efficiency.

Description

A kind of energy recovery utilizing system being classified separation output based on low speed machine exhaust energy
Technical field
The present invention relates to a kind of diesel engines, specifically diesel engine energy recovery utilizing system.
Background technique
As people pay attention to environmental protection further, major environmental protection organization, the world has put into effect relevant exhaust method in succession Rule supervise every profession and trade to carry out energy-saving and emission-reduction, especially for shipbuilding industry.Currently, there is two technological approaches to may be implemented to discharge Reduction, first is that optimization ship type reduce resistance, second is that improve dynamical system efficiency.For this purpose, dynamical system energy is rationally utilized, High efficiente callback waste heat reduces marine fuel equivalent consumption to reduce carbon discharge capacity, subtracts to China's shipbuilding industry and shipping business energy conservation It is huge to arrange meaning.Major impetus of the diesel engine as ship, the thermal efficiency have been approached 50%, but still have 50% energy to be given up Gas, cooling medium are taken away.If can make full use of this part of waste heat, the host thermal efficiency can be significantly improved.Using waste heat benefit The energy utilization efficiency of entire power device can be made to be increased to 54.8% from 49.3% with system, therefore, researching and designing is efficient Host afterheat utilizing system be improve ship power system efficiency one of main means.
Summary of the invention
The purpose of the present invention is to provide the one kind that can export different quality energy to be classified based on low speed machine exhaust energy Separate the energy recovery utilizing system of output.
The object of the present invention is achieved like this:
A kind of energy recovery utilizing system that separation output is classified based on low speed machine exhaust energy of the present invention, it is characterized in that: System, low temperature heat system, each cylinder are utilized including cylinder, high-temperature exhaust air general pipeline, cryopumping general pipeline, high-temperature residual heat Exhaust valve after be respectively mounted exhaust classification seperating vale, each exhaust classification seperating vale is all connected with its high temperature row for corresponding to cylinder Gas manifold and cryopumping manifold, all hot exhaust manifolds are connected to high-temperature exhaust air general pipeline, all cryopumping manifolds It is connected to cryopumping general pipeline, the outlet of high-temperature exhaust air general pipeline connects booster turbine import, and booster turbine outlet connection is high Warm afterheat utilizing system, the outlet of cryopumping general pipeline is separately connected EGR control valve and cryopumping outlet, low Warm exhaust exit pipe connects low temperature heat system.
The present invention may also include:
1, the high-temperature residual heat includes high-temperature residual heat boiler, steamturbine, the first generator, the first condensation using system Device, the first reflux pump, the boiler working substance of high-temperature residual heat boiler is followed by steamturbine, the first condenser, the first reflux pump stream High-temperature residual heat boiler is returned, steamturbine connects the first generator, the exhaust of the outlet high-temperature residual heat boiler of booster turbine Import, and cryopumping outlet is connected to by the air exit of high-temperature residual heat boiler.
2, the low temperature heat system includes low temperature waste heat exchanger, power turbine, the second generator, the second condensation Device, the second reflux pump, the heat exchanger working medium of low temperature waste heat exchanger is followed by power turbine, the second condenser, the second reflux Pump flows back to low temperature waste heat exchanger, and power turbine connects the second generator, and cryopumping outlet is connected to low temperature waste heat exchanger Exhaust gas intake port, and atmosphere is connected to by the air exit of low temperature waste heat exchanger.
3, exhaust classification separation electronic control unit connect and control exhaust classification seperating vale scheduled air valve phase guidance give up Gas enters hot exhaust manifolds or cryopumping manifold.
4, EGR control valve rear connects supercharger air compressor air inlet, and exhaust gas recycles electronic control unit connection simultaneously Control the opening and closing of EGR control valve.
Present invention has an advantage that
1, low speed machine exhaust energy recycling system designed by the present invention is able to achieve the classification separation of exhaust energy, will arrange Gas is divided into the exhaust of high temperature and pressure grade different from two kinds of low-temp low-pressure.
2, using system, high-temperature exhaust air supplies turbocharger and steam whirlpool for the exhaust energy classification separation that the present invention designs The device of the demands high-grade heat sources such as wheel power generation, can be improved the efficiency of turbine output and steam turbine power production.
3, using system, the cryopumping exported recycles exhaust gas for the exhaust energy classification separation that the present invention designs Cooling during rolling can be carried out without using cooler, can especially be saved in the case where application low-sulfur oil or gaseous propellant engine The devices such as exhaust gas washing, filtering are removed, system structure is simplified, improves system effectiveness and reduce operating cost.
4, the present invention uses Organic Rankine Cycle can as low temperature heat system in energy recovery utilizing system end Low-grade exhaust energy is made full use of, realizes the maximization of energy utilization.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
It illustrates with reference to the accompanying drawing and the present invention is described in more detail:
In conjunction with Fig. 1, low speed machine exhaust energy classification separation and recovery of the present invention specifically includes that exhaust point using system Grade seperating vale 2, cryopumping plenum chamber 1, high-temperature exhaust air plenum chamber 5, cryopumping manifold 3, hot exhaust manifolds 6, low temperature row Gas general pipeline 7, high-temperature exhaust air general pipeline 8, exhaust classification separation electronic control unit 4, EGR control valve 9, exhaust gas recycling are automatically controlled Unit 10, supercharger air compressor 11, booster turbine 12, high-temperature residual heat utilize system 23, low temperature heat system 24.
The exhaust that the present invention designs is classified seperating vale 2, after being located at exhaust valve for internal combustion engine, is classified separation electronic control unit by exhaust 4 controls.Waste gas flow direction can be changed in specific exhaust valve phasings, and exhaust gas is guided to flow into cryopumping plenum chamber 1 or high temperature row Gas plenum chamber 5.Above-mentioned exhaust classification seperating vale 2, cryopumping plenum chamber 1 and high-temperature exhaust air plenum chamber 5 constitute primary exhaust point Grade separation system, each cylinder of internal combustion engine are equipped with a set of primary exhaust classification separation system.Each cryopumping plenum chamber It is connected respectively by cryopumping manifold with cryopumping general pipeline 7;Similarly, each high-temperature exhaust air plenum chamber passes through high-temperature exhaust air discrimination Pipe is connected with high-temperature exhaust air general pipeline 8.Including exhaust classification seperating vale, high/low temperature exhaust collector box and its exhaust manifold, exhaust Each component including general pipeline, exhaust classification seperating vale electronic control unit constitutes complete exhaust classification separation output system.
High-temperature exhaust air general pipeline 8 is connected with booster turbine 12, for driving exhaust gas turbine.Booster turbine outlet and height Warm afterheat utilizing system 23 connects, specifically include that high-temperature residual heat boiler 13, steamturbine 14, generator 15, condenser 16, Reflux pump 17.High-temperature residual heat after by-pass line is connected with cryopumping general pipeline 7, is commonly connected to more than low temperature using system outlet Heat utilization system 24, the system are equipped with low temperature waste heat exchanger 22, power turbine 19, generator 18, condenser 20, reflux pump 21.9 one end of EGR control valve is connect with cryopumping general pipeline 7, and the other end is connect with 11 import of supercharger air compressor.
A kind of energy recovery utilizing system that separation output is classified based on low speed machine exhaust energy that the present invention designs, every The exhaust valve opening final vacuum classification seperating vale 2 of one cylinder is under the control that exhaust is classified separation electronic control unit 4 according to predetermined Air valve phase guidance exhaust gas enter high temperature or cryopumping plenum chamber, be vented initial stage temperature and pressure be relatively high, this When, exhaust gas enters high-temperature exhaust air plenum chamber 5 through exhaust classification seperating vale 2;Exhaust process rear half stage flows out exhaust valve at this time Delivery temperature and pressure are all relatively low, and exhaust gas enters cryopumping plenum chamber 1 through exhaust classification seperating vale 2.
High-temperature exhaust air enters booster turbine 12 through high-temperature exhaust air general pipeline 8, pushes 12 high-speed rotation of booster turbine, and band Dynamic 11 compressed air of supercharger air compressor, improves gas pressure.Pressurized gas is by inlet manifold in each cylinder intake Enter each cylinder under the control of valve.The high-temperature exhaust air for separating output based on energy cascade and generating compares the row for passing low speed machine Gas has higher energy density, more power can be provided to booster, and then realize higher boost pressure, indirectly Improve low speed engine efficiency.
The outlet exhaust of booster turbine 12 enters high-temperature residual heat using system 23 through exhaust pipe, and high-temp waste gas is in high temperature Exchange heat at waste heat boiler 13 with boiler working substance, and working medium made to be vaporizated into high-temperature steam, high-temperature steam by steam pipework into Enter steamturbine 14, steamturbine is pushed to rotate and generator 15 is driven to generate electricity, the working medium that steamturbine 14 exports is by condensation Device 16 is cooling and liquefies completely, comes back to high-temperature residual heat boiler 13 under the conveying of reflux pump 17 later.High-grade exhaust gas It can be further improved the efficiency that high-temperature residual heat utilizes system.
The exhaust energy classification separation output system that the present invention designs, the cryopumping temperature provided are far below conventional exhaust The delivery temperature of mode, for this purpose, can be cooled down without using intercooler to exhaust gas in gas recirculation system, especially It, can be only real by EGR control valve energy using cryopumping using the dynamical system of low-sulfur oil or gas engine Existing exhaust gas recycling.EGR control valve is controlled by-passing valve, can be under the control of exhaust gas recycling electronic control unit 10 The ER EGR Rate for adjusting low speed machine, makes portion pass through pressurization again and returns to cylinder, but most low temperature waste gas meeting It is directly mixed with high-temperature residual heat using the outlet exhaust of system, forms new low temperature waste gas.
Since high-temperature residual heat is using the exhaust gas parameters and low temperature waste gas parameter similar at system outlet, directly mix not Low temperature waste gas quality can be reduced, the mass flow of low temperature waste gas can be improved instead.Low temperature waste gas can finally enter low temperature exhaust heat Using system 24, low temperature heat system is that working medium is different using the maximum difference of system from high-temperature residual heat, and use is organic Organic Rankine Cycle of the object as working medium can use low-grade cryopumping as heat source, to improve system entirety Capacity usage ratio.

Claims (9)

1. it is a kind of based on low speed machine exhaust energy be classified separation output energy recovery utilizing system, it is characterized in that: include cylinder, High-temperature exhaust air general pipeline, cryopumping general pipeline, high-temperature residual heat utilize system, low temperature heat system, the exhaust valve of each cylinder After be respectively mounted exhaust classification seperating vale, each exhaust classification seperating vale be all connected with its hot exhaust manifolds for corresponding to cylinder and Cryopumping manifold, all hot exhaust manifolds are connected to high-temperature exhaust air general pipeline, and all cryopumping manifolds are connected to low Warm exhaust main, the outlet of high-temperature exhaust air general pipeline connect booster turbine import, booster turbine outlet connection high-temperature residual heat benefit With system, the outlet of cryopumping general pipeline is separately connected EGR control valve and cryopumping outlet, and cryopumping goes out Mouth pipe connects low temperature heat system.
2. a kind of energy regenerating for being classified separation output based on low speed machine exhaust energy according to claim 1 utilizes system System, it is characterized in that: the high-temperature residual heat includes high-temperature residual heat boiler, steamturbine, the first generator, the first condensation using system Device, the first reflux pump, the boiler working substance of high-temperature residual heat boiler is followed by steamturbine, the first condenser, the first reflux pump stream High-temperature residual heat boiler is returned, steamturbine connects the first generator, the exhaust of the outlet high-temperature residual heat boiler of booster turbine Import, and cryopumping outlet is connected to by the air exit of high-temperature residual heat boiler.
3. a kind of energy regenerating for being classified separation output based on low speed machine exhaust energy according to claim 1 or 2 utilizes System, it is characterized in that: the low temperature heat system includes low temperature waste heat exchanger, power turbine, the second generator, second Condenser, the second reflux pump, the heat exchanger working medium of low temperature waste heat exchanger is followed by power turbine, the second condenser, second Reflux pump flows back to low temperature waste heat exchanger, and power turbine connects the second generator, and cryopumping outlet connection low temperature exhaust heat changes The exhaust gas intake port of hot device, and atmosphere is connected to by the air exit of low temperature waste heat exchanger.
4. a kind of energy regenerating for being classified separation output based on low speed machine exhaust energy according to claim 1 or 2 utilizes System is drawn it is characterized in that: exhaust classification separation electronic control unit connects and controls exhaust classification seperating vale in scheduled air valve phase It leads exhaust gas and enters hot exhaust manifolds or cryopumping manifold.
5. a kind of energy regenerating for being classified separation output based on low speed machine exhaust energy according to claim 3 utilizes system System guides it is characterized in that: exhaust classification separation electronic control unit connects and controls exhaust classification seperating vale in scheduled air valve phase Exhaust gas enters hot exhaust manifolds or cryopumping manifold.
6. a kind of energy regenerating for being classified separation output based on low speed machine exhaust energy according to claim 1 or 2 utilizes System, it is characterized in that: EGR control valve rear connects supercharger air compressor air inlet, exhaust gas recycles electronic control unit and connects Connect and control the opening and closing of EGR control valve.
7. a kind of energy regenerating for being classified separation output based on low speed machine exhaust energy according to claim 3 utilizes system System, it is characterized in that: EGR control valve rear connects supercharger air compressor air inlet, exhaust gas recycles electronic control unit connection And control the opening and closing of EGR control valve.
8. a kind of energy regenerating for being classified separation output based on low speed machine exhaust energy according to claim 4 utilizes system System, it is characterized in that: EGR control valve rear connects supercharger air compressor air inlet, exhaust gas recycles electronic control unit connection And control the opening and closing of EGR control valve.
9. a kind of energy regenerating for being classified separation output based on low speed machine exhaust energy according to claim 5 utilizes system System, it is characterized in that: EGR control valve rear connects supercharger air compressor air inlet, exhaust gas recycles electronic control unit connection And control the opening and closing of EGR control valve.
CN201910393546.0A 2019-05-13 2019-05-13 Energy recycling system based on low-speed machine exhaust energy stage separation output Active CN110107384B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112377280A (en) * 2020-11-04 2021-02-19 哈尔滨工程大学 Supercharged engine exhaust energy gradient utilization system and utilization method thereof
CN114000926A (en) * 2021-11-01 2022-02-01 哈尔滨工程大学 Exhaust and shunt two-stage waste heat utilization system of low-speed diesel engine

Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2004011512A (en) * 2002-06-06 2004-01-15 Sango Co Ltd Waste heat recovering device
CN101459397A (en) * 2008-12-26 2009-06-17 大连海事大学 Residue heat temperature difference electricity conversion power generation system for internal combustion engine
CN203098005U (en) * 2013-03-08 2013-07-31 天津大学 Divided-flow type combustor engine exhaust waste heat recovery system
CN203906054U (en) * 2014-04-09 2014-10-29 浙江交通职业技术学院 Device using waste heat and pressure to generate electricity in tail gas of vehicle engine
CN107503832A (en) * 2017-09-16 2017-12-22 郑州大学 A kind of integrated thermal management system based on residual heat of tail gas of automobile cascade utilization

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004011512A (en) * 2002-06-06 2004-01-15 Sango Co Ltd Waste heat recovering device
CN101459397A (en) * 2008-12-26 2009-06-17 大连海事大学 Residue heat temperature difference electricity conversion power generation system for internal combustion engine
CN203098005U (en) * 2013-03-08 2013-07-31 天津大学 Divided-flow type combustor engine exhaust waste heat recovery system
CN203906054U (en) * 2014-04-09 2014-10-29 浙江交通职业技术学院 Device using waste heat and pressure to generate electricity in tail gas of vehicle engine
CN107503832A (en) * 2017-09-16 2017-12-22 郑州大学 A kind of integrated thermal management system based on residual heat of tail gas of automobile cascade utilization

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112377280A (en) * 2020-11-04 2021-02-19 哈尔滨工程大学 Supercharged engine exhaust energy gradient utilization system and utilization method thereof
CN112377280B (en) * 2020-11-04 2023-05-05 哈尔滨工程大学 Exhaust energy cascade utilization system of supercharged engine and utilization method thereof
CN114000926A (en) * 2021-11-01 2022-02-01 哈尔滨工程大学 Exhaust and shunt two-stage waste heat utilization system of low-speed diesel engine

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