CN106567769B - A kind of vehicular engine heat management system and method based on thermoelectric generation - Google Patents

A kind of vehicular engine heat management system and method based on thermoelectric generation Download PDF

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Publication number
CN106567769B
CN106567769B CN201610927788.XA CN201610927788A CN106567769B CN 106567769 B CN106567769 B CN 106567769B CN 201610927788 A CN201610927788 A CN 201610927788A CN 106567769 B CN106567769 B CN 106567769B
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CN
China
Prior art keywords
temperature
engine
electronic
coolant
cooling
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CN201610927788.XA
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Chinese (zh)
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CN106567769A (en
Inventor
傅佳宏
肖宝兰
张宇
孙树礼
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浙江大学城市学院
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Priority to CN201610927788.XA priority Critical patent/CN106567769B/en
Publication of CN106567769A publication Critical patent/CN106567769A/en
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Publication of CN106567769B publication Critical patent/CN106567769B/en

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Classifications

    • 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
    • F01N13/082Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • 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
    • F01N13/002Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
    • 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
    • F01N13/008Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • 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 from exhaust energy
    • F01N5/02Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
    • F01N5/025Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat the device being thermoelectric generators
    • 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

Abstract

A kind of vehicular engine heat management system based on thermoelectric generation, it is characterized by: being equipped with exhaust gas temperature sensor on the exhaust pipe of engine, exhaust pipe is connected on the first three-dimensional dynamoelectric proportion valve, and the other both ends of the first three-dimensional dynamoelectric proportion valve couple muffler and temperature-difference power generation module air inlet respectively;Engine coolant outlet is connected to electronic thermostat, and electronic thermostat is respectively coupled to water radiator and engine coolant entrance, and engine coolant inlet is equipped with coolant rate sensor and cooling-water temperature transmitter;Couple the second three-dimensional dynamoelectric proportion valve after water radiator, the second another both ends of three-dimensional dynamoelectric proportion valve are respectively coupled to temperature-difference power generation module coolant inlet and engine coolant entrance;Temperature-difference power generation module cooling liquid outlet is connected with engine coolant entrance again;Cooling-water temperature transmitter, coolant rate sensor and exhaust gas temperature sensor are connected to controller by signal wire, and battery is connected to controller by power line.

Description

A kind of vehicular engine heat management system and method based on thermoelectric generation
Technical field
The present invention relates to a kind of vehicular engine heat management systems, in particular to a kind of to be based on modified temperature-difference power generation module Waste heat recycling and engine thermal status adjustment vehicular engine heat management system, belong to energy regeneration technical field.
Background technique
At present vehicular engine heat management system mainly use electronic water pump, electronic fan, electronic thermostat etc. Equipment, but these equipment are primarily upon cooling of the engine when operating normally, and often ignore engine in cold start-up, height The Warm status of engine when fast operating condition and rear cooling operating condition, in addition to cooling, engine may be needed to keep the temperature and even be heated up at this time.
In addition, the control of above-mentioned electronic equipment and use all rely on vehicle battery, and the charging of battery mainly comes Derived from alternator for vehicle, consumption be engine Effective power a part, but a large amount of engine exhaust energy still not by It recycles.Finally, mainly utilizing the temperature difference between exhaust high temperature end and air low temperature end in the thermo-electric generation system ground at present It generates electricity, but enging cabin temperature is higher and air-flow movement disorder, and automobile exhaust is there are flow velocity height, cyclic fluctuation is big, The features such as exhaust back pressure should not be too large, leads to that thermo-electric generation efficiency is lower and generating voltage is extremely unstable.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of using based on the automobile-used of thermoelectric generation Engine thermal management system and its method.In conjunction with thermoelectric generation and engine thermal administrative skill, to the engine exhaust temperature difference Electricity generation module is redesigned, obtained while not increasing exhaust resistance as far as possible higher generating efficiency with it is more stable Thermo-electric generation efficiency.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is as follows:
A kind of vehicular engine heat management system based on thermoelectric generation, it is characterised in that:
Exhaust gas temperature sensor is installed on the exhaust pipe of engine, exhaust pipe is connected on the first three-dimensional dynamoelectric proportion valve, The other both ends of first three-dimensional dynamoelectric proportion valve couple muffler and temperature-difference power generation module air inlet respectively;
Engine coolant outlet is connected to electronic thermostat, and electronic thermostat is respectively coupled to water radiator and engine Coolant inlet, engine coolant inlet are equipped with coolant rate sensor and cooling-water temperature transmitter;
Couple the second three-dimensional dynamoelectric proportion valve after water radiator, the second another both ends of three-dimensional dynamoelectric proportion valve are respectively coupled to Temperature-difference power generation module coolant inlet and engine coolant entrance;Temperature-difference power generation module cooling liquid outlet again with engine cool Liquid entrance is connected;
Cooling-water temperature transmitter, coolant rate sensor and exhaust gas temperature sensor are connected to control by signal wire Device, battery are connected to controller by power line, and controller connect with power line traffic control by control line and drives electronic water Pump, electronic fan, electronic thermostat, the first three-dimensional dynamoelectric proportion valve and the second three-dimensional dynamoelectric proportion valve.
The temperature-difference power generation module is gas-liquid binary channels temperature-difference power generation module, including thermo-electric generation plate, cooling tube, shell, Enclosure interior has inner fin, and hull outside is evenly equipped with thermo-electric generation plate in two sides up and down, is connected with cooling tube among thermo-electric generation plate Thermo-electric generation plate cooling is carried out, and the cooling tube between each thermo-electric generation plate is in parallel, and connects with engine cool pipeline.
Preferably, the thermo-electric generation plate is single-layer double-side ceramic packaging structure, and encapsulant is silica gel, and inside is partly to lead Body material, ingredient are bismuth telluride (Bi2Te3).
The temperature-difference power generation module is connected to the battery by voltage changing module, power supply module, is generated by thermo-electric generation Electric energy is stored into battery by voltage changing module, power supply module.
Vehicular engine thermal management algorithm based on thermoelectric generation, it is characterised in that the following steps are included:
When engine start warming-up, electronic thermostat is closed, and cooling-water temperature transmitter measurement engine coolant enters Mouth temperature, until coolant temperature reaches 85 DEG C;
When coolant temperature temperature is more than 85 DEG C, controller opens electronic thermostat, and controller controls electronic water pump, electricity Sub- fan is opened;
When speed is further up, cooling effect increases vehicle windward, and downward trend occurs in coolant temperature, but in electronics When thermostat closing temperature nearby fluctuates, electronic thermostat lags the effect of lower water temperature, at this point, controller control first Electronic three-dimensional proportioning valve is opened, and engine exhaust enters temperature-difference power generation module, at this point, temperature-difference power generation module is carrying out thermo-electric generation While coolant liquid is heated so that coolant temperature is adjusted;At the same time, controller is according to engine exhaust temperature Degree adjusts electronic fan and electronic water pump revolving speed, and engine coolant inlet temperature is maintained at 90 DEG C;
When vehicle is out of service, when engine misses, the second electronic three-dimensional proportioning valve is closed, and controller controls electronic fan Continue to run until that engine coolant temperature reaches 80 DEG C hereinafter, stopping electronic fan, electronic water pump, pass with electronic water pump Close electronic thermostat.
Compared with prior art, the beneficial effects of the invention are as follows being improved to existing exhaust temperature-difference power generation module, gram It has taken and has commonly used the problems such as vehicle-mounted temperature-difference power generation module temperature difference is too small and the heat exchange of cold and hot side is not enough, and muffler can be played Effect.In addition, above-mentioned module can compactly be coupled in original machine heat management system and participate in engine thermal status adjustment.This hair It is bright that engine exhaust temperature-difference power generation module is redesigned, it is obtained while not increasing exhaust resistance as far as possible higher Generating efficiency and more stable thermo-electric generation efficiency, while being recovered energy using waste heat and carrying out engine thermal management, further mention Rise engine effective efficiency.The present invention can effectively solve that engine exhaust heat recycling and reusing efficiency is relatively low and engine thermal state Adjust inaccurate two hang-up.
Detailed description of the invention
Fig. 1 is system hardware arrangement schematic diagram;
Fig. 2 is temperature-difference power generation module structural schematic diagram.
In figure, 1. water radiators, 2. second three-dimensional dynamoelectric proportion valves, 3. engines, 4. cooling lines, 5. exhaust pipes, 6. Exhaust gas temperature sensor, 7. first three-dimensional dynamoelectric proportion valves, 8. mufflers, 9. temperature-difference power generation modules, 10. voltage changing modules, 11. supply Electric module, 12. coolant rate sensors, 13. batteries, 14. cooling-water temperature transmitters, 15. electronic water pumps, 16. controls Device, 17. electronic thermostats, 18. electronic fans, 19. temperature-difference power generation module air inlets, 20. shells, 21. thermo-electric generation plates, 22. Cooling tube, 23. temperature-difference power generation module exhaust outlets, 24. inner fins.
Specific embodiment
The following further describes the present invention with reference to the drawings.
As shown in Figure 1, including: thermo-electric generation mould the present invention is based on the vehicular engine heat management system of thermoelectric generation Block 9, engine 3, exhaust pipe 5, exhaust gas temperature sensor 6, the first three-dimensional dynamoelectric proportion valve 7, voltage changing module 10, power supply module 11, battery 13, cooling line 4, electronic thermostat 17, water radiator 1, the second three-dimensional dynamoelectric proportion valve 2, electronic fan 18, Electronic water pump 15, controller 16, cooling-water temperature transmitter 14, coolant rate sensor 12;The present invention is arranged using engine Gas and engine coolant are that the temperature-difference power generation module of heat transferring medium carries out thermo-electric generation, and is stored in battery, then pass through Monitoring control devices engine arranges mild engine coolant inlet temperature, flow, and drives electronic fan, electronics by battery Water pump, electronic thermostat carry out engine thermal status adjustment.
Exhaust gas temperature sensor 6 is installed on exhaust pipe 5, exhaust pipe 5 is connected on the first three-dimensional dynamoelectric proportion valve 7, The other both ends of one three-dimensional dynamoelectric proportion valve 7 couple muffler 8 and temperature-difference power generation module air inlet 9 respectively;
Engine coolant outlet is connected to electronic thermostat 17, and electronic thermostat 17 is respectively coupled to 1 He of water radiator Engine coolant entrance, engine coolant inlet are equipped with coolant rate sensor 12 and cooling-water temperature transmitter 14。
Couple the second three-dimensional dynamoelectric proportion valve 2 after water radiator 1, the another both ends of the second three-dimensional dynamoelectric proportion valve 2 join respectively It is connected to temperature-difference power generation module coolant inlet and engine coolant entrance;Temperature-difference power generation module cooling liquid outlet again with engine Coolant inlet is connected.
Cooling-water temperature transmitter 14, coolant rate sensor 12 and exhaust gas temperature sensor 6 are coupled by signal wire To controller 16, battery 13 is connected to controller 16 by power line.Controller 16 is connected by control line and power line traffic control Connect and drive electronic water pump 15, electronic fan 18, electronic thermostat 17, the first three-dimensional dynamoelectric proportion valve 7 and the second three-dimensional electronic Proportioning valve 2.Controller 16 uses arm processor.
A kind of follow-on temperature-difference power generation module 9 used in the present invention is gas-liquid binary channels temperature-difference power generation module, knot Referring to fig. 2, including thermo-electric generation plate 21, cooling tube 22, shell 20, inner fin 24, the shell 20 are that heating conduction is preferable to structure Metal material, inside has zigzag or other shapes inner fin 24, but does not influence engine exhaust back pressure, and has and eliminate the noise The effect of device is engine exhaust passage;Two sides are evenly equipped with thermo-electric generation plate to 20 outside of shell up and down, lead among thermo-electric generation plate Having cooling tube to carry out, power generation plate is cooling, and the cooling tube between each thermo-electric generation plate is in parallel, and goes here and there with engine cool pipeline 4 Connection.
Preferably, the thermo-electric generation plate is single-layer double-side ceramic packaging structure, and encapsulant is silica gel, and inside is partly to lead Body material, ingredient are bismuth telluride (Bi2Te3).
Temperature-difference power generation module is connected to the battery by voltage changing module, power supply module, the electric energy generated by thermo-electric generation Battery is stored by voltage changing module, power supply module.
The vehicular engine heat management control method for being specifically based on thermoelectric generation is as follows:
The present invention uses engine exhaust and engine coolant to carry out temperature difference hair for the temperature-difference power generation module of heat transferring medium Electricity, and be stored in battery, then mild cooling water temperature, flow are arranged by monitoring control devices engine, and pass through battery Electronic fan, electronic water pump, electronic thermostat is driven to carry out engine thermal status adjustment, the specific steps are as follows:
When engine 3 starts warming-up, electronic thermostat 17 is closed, and cooling-water temperature transmitter 14 measures engine cool Liquid inlet temperature, until coolant temperature reaches 85 DEG C.
When coolant temperature is more than 85 DEG C, controller 16 opens electronic thermostat 17, and partial circulating is closed, and systemic circulation is opened It opens, controller 16 controls electronic water pump 15, electronic fan 18 is opened.
When speed is further up, cooling effect increases vehicle windward, and downward trend occurs in water temperature, but in electronic thermostat When 17 closing temperatures nearby fluctuate, thermostat lags the effect of lower water temperature, at this point, the control first of controller 16 is electronic Three-dimensional proportioning valve 7 is opened, and engine exhaust enters temperature-difference power generation module 9, at this point, module is while carrying out thermo-electric generation to cold But liquid is heated, so that coolant temperature is adjusted;At the same time, controller 16 is according to engine exhaust temperature regulation electricity Sub- fan 18 and 15 revolving speed of electronic water pump, keep engine coolant inlet temperature to be maintained at 90 DEG C.
When vehicle is out of service, and engine 3 stops working, the second electronic three-dimensional proportioning valve 2 is closed, and controller 16 controls electronics Fan 18 and electronic water pump 15 continue to run until that engine coolant temperature reaches 80 DEG C hereinafter, stopping electronic fan 18, electricity Sub- water pump 15 closes electronic thermostat 17.
Temperature-difference power generation module can be compactly coupled in original machine heat management system by above-mentioned control strategy, and can be with Play the role of muffler.The present invention can not only carry out efficiently engine exhaust heat recycling and reusing, but also can be to starting Machine Warm status is accurately adjusted, and the thermal efficiency of engine is further promoted.At one stroke solve engine exhaust heat recycling and reusing and Inaccurate two hang-up of engine thermal status adjustment.

Claims (6)

1. a kind of vehicular engine heat management system based on thermoelectric generation, it is characterised in that:
Exhaust gas temperature sensor is installed on the exhaust pipe of engine, exhaust pipe is connected on the first three-dimensional dynamoelectric proportion valve, and first The other both ends of three-dimensional dynamoelectric proportion valve couple muffler and temperature-difference power generation module air inlet respectively;
Engine coolant outlet is connected to electronic thermostat, and electronic thermostat is respectively coupled to water radiator and engine cool Liquid entrance, engine coolant inlet are equipped with coolant rate sensor and cooling-water temperature transmitter;
Couple the second three-dimensional dynamoelectric proportion valve after water radiator, the second another both ends of three-dimensional dynamoelectric proportion valve are respectively coupled to the temperature difference Electricity generation module coolant inlet and engine coolant entrance;Temperature-difference power generation module cooling liquid outlet enters with engine coolant again Mouth is connected;
Cooling-water temperature transmitter, coolant rate sensor and exhaust gas temperature sensor are connected to controller by signal wire, Battery is connected to controller by power line, controller by control line connect and drive with power line traffic control electronic water pump, Electronic fan, electronic thermostat, the first three-dimensional dynamoelectric proportion valve and the second three-dimensional dynamoelectric proportion valve.
2. a kind of vehicular engine heat management system based on thermoelectric generation as described in claim 1, it is characterised in that: Temperature-difference power generation module is gas-liquid binary channels temperature-difference power generation module, including thermo-electric generation plate, cooling tube, shell, enclosure interior have Inner fin, hull outside are evenly equipped with thermo-electric generation plate in two sides up and down, and cooling tube is connected among thermo-electric generation plate and carries out thermo-electric generation Plate is cooling, and the cooling tube between each thermo-electric generation plate is in parallel, and connects with engine cool pipeline.
3. a kind of vehicular engine heat management system based on thermoelectric generation as claimed in claim 2, it is characterised in that: The thermo-electric generation plate is single-layer double-side ceramic packaging structure, and encapsulant is silica gel, and inside is semiconductor material, semiconductor material Material ingredient is bismuth telluride (Bi2Te3).
4. a kind of vehicular engine heat management system based on thermoelectric generation as claimed in claim 1 or 2, feature exist In: temperature-difference power generation module is connected to the battery by voltage changing module, power supply module, passes through change by the electric energy that thermo-electric generation generates Die block, power supply module are stored into battery.
5. such as a kind of described in any item vehicular engine heat management systems based on thermoelectric generation of Claims 1-4 Management method, it is characterised in that: engine exhaust and engine coolant is used to carry out for the temperature-difference power generation module of heat transferring medium Thermo-electric generation, and be stored in battery, then mild cooling water temperature, flow are arranged by monitoring control devices engine, and pass through Battery drives electronic fan, electronic water pump, electronic thermostat to carry out engine thermal status adjustment.
6. a kind of management method of the vehicular engine heat management system based on thermoelectric generation as claimed in claim 5, Characterized by the following steps:
When engine start warming-up, electronic thermostat is closed, and cooling-water temperature transmitter measures engine coolant entrance temperature Degree, until coolant temperature reaches 85 DEG C;
When coolant temperature is more than 85 DEG C, controller opens electronic thermostat, and controller controls electronic water pump, electronic fan It opens;
When speed is further up, cooling effect increases vehicle windward, and downward trend occurs in coolant temperature, but in electronics section temperature When device closing temperature nearby fluctuates, electronic thermostat lags the effect of lower water temperature, at this point, controller control first is electronic Three-dimensional proportioning valve is opened, and engine exhaust enters temperature-difference power generation module, at this point, temperature-difference power generation module is carrying out the same of thermo-electric generation When coolant liquid is heated so that coolant temperature is adjusted;At the same time, controller is according to engine exhaust temperature tune Electronic fan and electronic water pump revolving speed are saved, engine coolant inlet temperature is maintained at 90 DEG C;
When vehicle is out of service, when engine misses, the second electronic three-dimensional proportioning valve is closed, and controller controls electronic fan and electricity Sub- water pump continues to run until that engine coolant temperature reaches 80 DEG C hereinafter, stopping electronic fan, electronic water pump, closing electricity Sub- thermostat.
CN201610927788.XA 2016-10-31 2016-10-31 A kind of vehicular engine heat management system and method based on thermoelectric generation CN106567769B (en)

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CN107435574A (en) * 2017-09-06 2017-12-05 哈尔滨工程大学 Diesel exhaust waste heat ECR fan pressure charging system
CN107401449A (en) * 2017-09-06 2017-11-28 哈尔滨工程大学 Diesel exhaust waste heat cools down ECR fan pressure charging system
CN108183279B (en) * 2017-12-21 2019-09-27 长安大学 A kind of thermal management device of battery based on engine exhaust cogeneration
CN109973189A (en) * 2017-12-28 2019-07-05 陕西汽车集团有限责任公司 Engine-cooling system based on exhaust power generation

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JP2005061260A (en) * 2003-08-08 2005-03-10 Denso Corp Waste heat recovery system
CN101660468A (en) * 2008-08-31 2010-03-03 上海徕普太阳能科技有限责任公司 Waste gas recovery system device of noise elimination and air cooling static catalytic cracker of internal-combustion engine
BRPI1100460A2 (en) * 2011-02-14 2013-04-30 Fabricio Segabinazzi Siqueira integrated system for recycling organic matter
CN103306851B (en) * 2013-05-30 2015-05-13 天津大学 Cylinder sleeve temperature difference generation device for internal combustion engine waste heat recovery
CN105703662A (en) * 2015-12-24 2016-06-22 芜湖恒耀汽车零部件有限公司 Automobile tail gas thermoelectric power generation system
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CN206158835U (en) * 2016-10-31 2017-05-10 浙江大学城市学院 Vehicle engine thermal management system based on thermoelectric generation technique

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