CN105697189A - System and control method for increasing energy utilization rate of EGR engine - Google Patents
System and control method for increasing energy utilization rate of EGR engine Download PDFInfo
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- CN105697189A CN105697189A CN201610195051.3A CN201610195051A CN105697189A CN 105697189 A CN105697189 A CN 105697189A CN 201610195051 A CN201610195051 A CN 201610195051A CN 105697189 A CN105697189 A CN 105697189A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
- F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00792—Arrangement of detectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2260/00—Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a system and control method for increasing the energy utilization rate of an EGR engine. A power transmission system comprises the engine. One part of exhaust gas exhausted out of the engine passes through an exhaust gas turbocharging system, a secondary heat exchanger and an exhaust aftertreatment system, and the other part of the exhaust gas passes through an exhaust gas recirculating system. An engine cooling system treats cooling water of the engine and meanwhile is connected with a cab heating assembly. The temperature collected by a temperature sensor is received by a signal collection system and sent to a data analysis execution system. A bottom circulating system carries out multistage heating on a circulating work medium with the cooling water of the engine, engine exhaust and heat energy in the exhaust gas recirculating system as a heat source and then expands in an expander to do work, a generator coaxial with the expander is driven for power generation, generated electric energy is stored in a storage battery, and conversion from heat energy to chemical energy is completed. The chemical energy which is released during combustion of fuel oil and not converted into mechanical energy by the engine is utilized to the maximum extent by means of bottom circulating.
Description
Technical field
The present invention relates to technical field of internal combustion engines, particularly relate to a kind of system improving EGR engine energy utilization rate and control method。
Background technology
Waste gas recirculation (ExhaustGasRecirculation, EGR) refers to that the part discharging gas is isolated by electromotor, and imports the technology that air inlet side makes it burn once again。Rankine cycle refers to a kind of Ideal Cycle process using steam as working medium, mainly includes isentropic Compression, isobaric heating, constant entropy expansion and an isobaric condensation process。
It is known that, energy produced by common engine fuel combustion only about 30% can be converted into mechanical power, and the effective efficiency of most advanced diesel engine is less than 45%, but still has most energy to be taken away by high-temp waste gas and cooling water, it is discharged in air, causes energy to run off。From energy figure, diesel exhaust gas temperature reaches 600 DEG C, and gasoline engine row's temperature can reach 700 DEG C, and the exhaust energy in electromotor still has the quality that comparison is high。Therefore, reclaim this portion of energy by Rankine cycle, become and realize vehicle energy saving, improve the effective energy utilization rate of vehicle and reduce an approach of carbon emission。
At present, the method improving capacity usage ratio is mostly simply install a heat exchanger after exhaustor additional, and this problem brought is: if size of heat exchanger is too little, and the cycle fluid of Rankine cycle can not absorb heat fully, reaches superheat state；If size of heat exchanger is too big, may result in the rising of engine exhaust back pressure, increase the load of electromotor, reduce the thermal efficiency of electromotor。And in the electromotor equipped with gas recirculation system (EGR) system, generally require in the middle of exhaustor and compressor, increase a middle device for cooling, reduce EGT, the energy of this part also wastes。Accordingly, it would be desirable to by the exhaust energy of electromotor is reasonably made full use of。
Summary of the invention
The purpose of the present invention is contemplated to solve the problems referred to above, a kind of system improving EGR engine energy utilization rate and control method are provided, this system, when engine work, is utilized by bottoming cycle fuel oil burning to be released to greatest extent but is not converted to that a part of chemical energy of mechanical energy by electromotor。
To achieve these goals, the present invention adopts the following technical scheme that
A kind of system improving EGR engine energy utilization rate, including power drive system, described power drive system includes electromotor；The waste gas part that described electromotor is discharged is discharged to air through exhaust turbocharging system, secondary heat exchanger and exhaust after treatment system, and another part enters electromotor with fresh air after gas recirculation system and carries out new circulation；Engine-cooling system also heats assembly with driver's cabin while the cooling water of electromotor is processed and is connected；Signal acquiring system accept temperature sensor gather temperature, and give data analysis perform system process；
Bottom cycle system is using the heat energy in engine cooling water, engine exhaust and gas recirculation system as thermal source, cycle fluid is carried out Multi-stage heating, so as to fully absorb heat, expansion work in expansion apparatus subsequently, the electromotor coaxial with expansion apparatus is driven to generate electricity, and the electrical power storage sent in accumulator, complete heat energy to chemistry transformation of energy。
Described power drive system also includes the change speed gear box, retarder and the drive axle that are sequentially connected with electromotor by power transmission shaft。
Described bottom cycle system includes being circulated successively the driving pump of connection, first-class heat exchanger, secondary heat exchanger, three grades of heat exchangers, expansion apparatus and condenser by pipeline；Described expansion apparatus is connected by power transmission shaft with electromotor。
Connecting line between described driving pump and first-class heat exchanger is provided with bottoming cycle just temperature sensor；Described three grades of connecting lines between heat exchanger and expansion apparatus are provided with bottoming cycle final temperature sensor, and all of temperature sensor is all connected with described data collecting system, and data collecting system performs system with described data analysis and is connected；Data analysis performs system and electrically connects with driving switch pump。
Described exhaust turbocharging system includes exhaust-driven turbo-charger exhaust-gas turbo charger, and the compressor air inlet machine end of exhaust-driven turbo-charger exhaust-gas turbo charger is connected with air inlet pipe by air pipe line, and outlet side is sequentially connected with intercooler and motor intake manifold by air pipe line；
The turbine inlet end of exhaust-driven turbo-charger exhaust-gas turbo charger is connected by air pipe line with enmgine exhaust, and outlet side is connected by air pipe line with the secondary heat exchanger of engine aftertreatment system and bottom cycle system。
The waste gas of described gas recirculation system, from enmgine exhaust, then passes through the air pipe line three grades of heat exchangers through bottom cycle system, enters the inlet end of exhaust-driven turbo-charger exhaust-gas turbo charger compressor。
Described engine-cooling system includes being circulated successively the cooling water tank of connection by cooling water pipeline, cooling water pump, electromotor, driver's cabin heat assembly, the first-class heat exchanger of bottom cycle system and engine radiator。
The connecting line that described electromotor and driver's cabin heat between assembly is provided with coolant temperature sensor；Described driver's cabin heats assembly and is provided with cabin temperature sensor；Described driver's cabin heats the connecting line between assembly and bottom cycle system and is provided with one-level coolant temperature sensor, and all of temperature sensor is all connected with data collecting system, and described data collecting system performs system with data analysis and is connected；Described data analysis performs the three-way magnetic valve of three-way magnetic valve and first-class heat exchanger that system heats assembly with driver's cabin and is connected。
A kind of control method improving EGR engine energy utilization rate, comprises the following steps:
S201: when bottoming cycle carries out, detection drives pump discharge end and the temperature of the temperature of the as received basis being positioned at first-class heat exchanger front end and cooling water, passes to data analysis and performs system；
S202: data analysis performs system and the two temperature contrasted；If differing by more than setting value, data analysis performs system and two three-way magnetic valves of first-class heat exchanger is sent instruction, and electromagnetic valve is positioned at the unobstructed state of heat exchanger；In first-class heat exchanger, otherwise do not carry out heat exchange, be made directly S204；
S203: cycle fluid carries out heat exchange with cooling water in first-class heat exchanger；
S204: cycle fluid carries out heat exchange at secondary heat exchanger and three grades of heat exchangers, cycle fluid absorbs heat；
S205: judge that whether as received basis temperature is more than saturation temperature: if it has, then illustrate that as received basis has reached capacity or hypersaturated state；If it is otherwise, as received basis heat absorption is described not, current working is not suitable for carrying out bottoming cycle, after the system halt setting time, re-starts S201；
S206: expansion apparatus is done work by cycle fluid, heat release within the condenser；
S207: determine whether the request of shutting down, if it has, then loop ends；If it has not, then arrive S201 to carry out next new circulation。
Also including, when vehicle travels when relatively cold weather, driver, according to self needing selection to open vehicle heating, the temperature in the cooling water temperature of detection engine cool water out and driver's cabin, passes to data analysis and performs system；
If cooling water temperature exceedes setting value higher than cabin temperature, then data analysis performs system and heats the three-way magnetic valve of assembly to driver's cabin and driver's cabin radiator fan sends instruction, three-way magnetic valve is transformed into radiator state, radiator fan is opened, now cooling water flows through radiator, under the effect of radiator fan, carry out forced heat-exchanging, improve and drive indoor temperature；Otherwise, three-way magnetic valve is positioned at flow tube state, and radiator fan cuts out, and uses electromotor directly to drive air-conditioning to heat。
Beneficial effects of the present invention:
The present invention utilizes the bottoming cycle based on Rankine cycle, makes cycle fluid flow through three heat exchangers and absorbs heat, eventually arrives at superheated steam state, expansion work in expansion apparatus, drive electrical power generators, it is achieved convert heat energy into electric energy, and be stored in accumulator。
Driver's cabin can also be heated by the present invention according to driver intention, directly makes cooling water and cabin air carry out forced heat-exchanging, raises cabin temperature, decrease the use of air-conditioning, also avoid the air-conditioning destruction to environment to a certain extent。
Present configuration is simple, and existing vehicle can be realized by simple refit, and original vehicle performance is not impacted, it is possible to improve energy utilization rate, promotes energy-saving and emission-reduction。
Accompanying drawing explanation
Accompanying drawing 1 is invention system circulation and structure principle chart。
The control strategy flow chart of 2 invention system circulations of accompanying drawing。
Wherein, 1 electromotor, 2 change speed gear boxes, 3 coolant temperature sensors, 4 retarders, 5 drive axles, 6 three-way magnetic valves, 7 driver's cabins heat assembly, 8 cabin temperature sensors, 9 secondary heat exchangers, 10 one-level coolant temperature sensors, 11 first-class heat exchanger, 12 engine aftertreatment systems, 13 bottoming cycle are temperature sensor just, 14 drive pump, 15 data analysiss perform system, 16 data collecting systems, 17 condensers, 18 3 grades of heat exchangers, 19 electromotors, 20 expansion apparatuss, 21 engine radiators, 22 bottoming cycle final temperature sensors, 23 cooling water tanks, 24 exhaust-driven turbo-charger exhaust-gas turbo chargers, 25 charge air coolers, 26 cooling water pumps。
Detailed description of the invention
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described with embodiment。
A kind of system improving EGR engine energy utilization rate, including: power drive system, exhaust turbocharging system, gas recirculation system, gas extraction system, engine-cooling system, bottom cycle system and signal acquisition process perform system。
Power drive system includes the electromotor 1, change speed gear box 2, retarder 4 and the drive axle 5 that are sequentially connected with by power transmission shaft。
Exhaust turbocharging system includes, and the compressor air inlet machine end of exhaust-driven turbo-charger exhaust-gas turbo charger 24 is connected by air pipe line with air inlet pipe, and outlet side is sequentially connected with by air pipe line with intercooler 25 and electromotor 1 inlet manifold；The turbine inlet end of exhaust-driven turbo-charger exhaust-gas turbo charger 24 is connected by air pipe line with electromotor 1 exhaust manifold, and outlet side is connected by air pipe line with engine aftertreatment system 12 and the bottoming cycle secondary heat exchanger 9 of electromotor 1；
The waste gas of gas recirculation system carrys out since engine 1 exhaust manifold, by air pipe line through three grades of heat exchangers 18 of bottoming cycle, enters the inlet end of exhaust-driven turbo-charger exhaust-gas turbo charger 24 compressor；
Engine-cooling system includes being circulated successively the cooling water tank 23 of connection by cooling water pipeline, cooling water pump 26, electromotor 1, driver's cabin heat assembly 7, bottoming cycle first-class heat exchanger 11, engine radiator 21 etc.；Electromotor 1 and driver's cabin heat the connecting line between assembly 7 and are provided with coolant temperature sensor 3；Described driver's cabin heats assembly 7 and is provided with cabin temperature sensor 8；Described driver's cabin heats the connecting line between assembly 7 and bottoming cycle and is provided with one-level coolant temperature sensor 10；
Bottom cycle system includes being circulated the driving pump 14 of connection, bottoming cycle first-class heat exchanger 11, bottoming cycle secondary heat exchanger 9, three grades of heat exchangers 18 of bottoming cycle, expansion apparatus 20, condenser 17 etc. successively by pipeline；Connecting line between described driving pump 14 and first-class heat exchanger 11 is provided with bottoming cycle just temperature sensor 13；Connecting line between described three grades of heat exchangers 18 and expansion apparatus 20 is provided with bottoming cycle final temperature sensor 22；Described expansion apparatus 20 is connected by power transmission shaft with high-speed engine 19；
Coolant temperature sensor 3 gathers the real time temperature of the cooling water flowed out from electromotor；Cabin temperature sensor 8 gathers the temperature of driver's cabin；One-level coolant temperature sensor 10 gathers after driver's cabin heats assembly 7, the water temperature before first-class heat exchanger 11；Bottoming cycle just temperature sensor 13 gathers the temperature of the circulatory mediator driving pump 14 to pump；Bottoming cycle final temperature sensor 22 gathers circulatory mediator final temperature after three grades of heat exchange 18；
Coolant temperature sensor 3, cabin temperature sensor 8, one-level coolant temperature sensor 10, bottoming cycle just temperature sensor 13, bottoming cycle final temperature sensor 22 are all connected with data collecting system 16；Described data collecting system 16 performs system 15 with data analysis and is connected；Described data analysis performs system 15 and is connected with the three-way magnetic valve of bottoming cycle driving pump 14 switchs, driver's cabin heats assembly 7 three-way magnetic valve 6 and bottoming cycle first-class heat exchanger 11；
In the course of the work, cooling water is transported to electromotor 1 from cooling water tank 23 to electromotor 1 by cooling water pump 26, enters heat radiation link, be eventually returned in cooling water tank 23 and enter next one circulation after carrying out heat exchange with body。The aerofluxus of electromotor 1 is divided into two parts, it is partly into exhaust-driven turbo-charger exhaust-gas turbo charger 24, expansion work (this part merit is about to the fresh air of entrance electromotor and the gaseous mixture of EGR exhaust for the compression of driving pressure mechanism of qi), then enters in air through exhaust after treatment system and secondary heat exchanger 9 in the turbine。
In bottoming cycle, cycle fluid moves at the flows by action driving pump 14, and in three heat exchangers, heat absorption ultimately forms superheated steam, and superheated steam is expansion work in high speed expansion apparatus 20, driving turbine rotation, final remaining weary gas condensed device 17 heat release forms unsaturated liquid and enters next one circulation。In the process, turbine rotation drive electrical generators generates electricity, by electrical power storage in accumulator。The thermal energy collecting utilizing this system will originally slattern in this circulation, is converted into available electric energy。
The present invention, when engine work, is utilized by bottoming cycle fuel oil burning to be released to greatest extent but is not converted to that a part of chemical energy of mechanical energy by electromotor。This bottoming cycle is using the heat energy in engine cooling water, engine exhaust and gas recirculation system (EGR) as thermal source, cycle fluid is carried out Multi-stage heating, so as to fully absorb heat, expansion work in expansion apparatus subsequently, the electromotor coaxial with expansion apparatus is driven to generate electricity, and the electrical power storage sent in accumulator, complete heat energy to chemistry transformation of energy。Additionally, this system and method can also realize function driver's cabin heated at cold snap。
A kind of control method improving EGR engine energy utilization rate, comprises the following steps:
S201: when bottoming cycle carries out, be positioned at the first temperature sensor driving pump discharge end and be positioned at the one-level coolant temperature sensor in first-class heat exchanger front respectively by the temperature of the temperature of now as received basis and cooling water through signal acquiring system, pass to data analysis and perform system；
S202: data analysis performs system and the two temperature contrasted；If differing by more than 10% (can be manually set, it is not limited to 10% herein), data analysis performs system and two three-way magnetic valves of first-class heat exchanger is sent instruction, and electromagnetic valve is positioned at the unobstructed state of heat exchanger；In first-class heat exchanger, otherwise do not carry out heat exchange, directly skip next step S203, carry out S204；
S203: cycle fluid carries out heat exchange with cooling water in first-class heat exchanger；
S204: cycle fluid carries out heat exchange at two grades, three grades heat exchangers, cycle fluid absorbs heat；
S205: judge that whether as received basis temperature is more than saturation temperature: if it has, then illustrate that as received basis has reached capacity or hypersaturated state；If it is otherwise, as received basis heat absorption is described not, current working is not suitable for carrying out bottoming cycle, after system halt 5 minutes (can be manually set, it is not limited to 5 minutes herein), re-starts S201；
S206: expansion apparatus is done work by cycle fluid, heat release within the condenser；
S207: determine whether the request of shutting down, if it has, then loop ends；If it has not, then arrive S201 to carry out next new circulation。
When vehicle travels when relatively cold weather, driver according to self needing selection to open vehicle heating, can be now placed in the temperature sensor in the temperature sensor of engine cool water out and driver's cabin respectively by cooling water temperature with drive indoor temperature and pass to data analysis through data collecting system and perform system。If cooling water temperature (can be manually set higher than cabin temperature ten degree, it is not limited to ten degree herein), then data analysis performs system and heats the three-way magnetic valve of assembly to driver's cabin and driver's cabin radiator fan sends instruction, electromagnetic valve is transformed into radiator state, fan is opened, now cooling water flows through radiator, carries out forced heat-exchanging under the effect of radiator fan, improves and drives indoor temperature。Otherwise, electromagnetic valve is positioned at flow tube state, and fan cuts out, and uses electromotor directly to drive air-conditioning to heat。
The specific embodiment of the present invention is described in conjunction with accompanying drawing although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme, those skilled in the art need not pay various amendments or deformation that creative work can make still within protection scope of the present invention。
Claims (10)
1. improving a system for EGR engine energy utilization rate, it is characterized in that, including power drive system, described power drive system includes electromotor；Row is to air after exhaust turbocharging system, secondary heat exchanger and exhaust after treatment system for the waste gas part that described electromotor is discharged, and another part enters electromotor with fresh air after gas recirculation system and carries out new circulation；Engine-cooling system also heats assembly with driver's cabin while the cooling water of electromotor is processed and is connected；Signal acquiring system accept temperature sensor gather temperature, and give data analysis perform system process；
Bottom cycle system is using the heat energy in engine cooling water, engine exhaust and gas recirculation system as thermal source, cycle fluid is carried out Multi-stage heating, so as to fully absorb heat, expansion work in expansion apparatus subsequently, the electromotor coaxial with expansion apparatus is driven to generate electricity, and the electrical power storage sent in accumulator, complete heat energy to chemistry transformation of energy。
2. a kind of system improving EGR engine energy utilization rate as claimed in claim 1, is characterized in that, described power drive system also includes the change speed gear box, retarder and the drive axle that are sequentially connected with electromotor by power transmission shaft。
3. a kind of system improving EGR engine energy utilization rate as claimed in claim 1, is characterized in that, described bottom cycle system includes being circulated successively the driving pump of connection, first-class heat exchanger, secondary heat exchanger, three grades of heat exchangers, expansion apparatus and condenser by pipeline；Described expansion apparatus is connected by power transmission shaft with electromotor。
4. a kind of system improving EGR engine energy utilization rate as claimed in claim 3, is characterized in that, the connecting line between described driving pump and first-class heat exchanger is provided with bottoming cycle just temperature sensor；Described three grades of connecting lines between heat exchanger and expansion apparatus are provided with bottoming cycle final temperature sensor, and all of temperature sensor is all connected with described data collecting system, and data collecting system performs system with described data analysis and is connected；Data analysis performs system and electrically connects with driving switch pump。
5. a kind of system improving EGR engine energy utilization rate as claimed in claim 1, it is characterized in that, described exhaust turbocharging system includes exhaust-driven turbo-charger exhaust-gas turbo charger, the compressor air inlet machine end of exhaust-driven turbo-charger exhaust-gas turbo charger is connected with air inlet pipe by air pipe line, and outlet side is sequentially connected with intercooler and motor intake manifold by air pipe line；
The turbine inlet end of exhaust-driven turbo-charger exhaust-gas turbo charger is connected by air pipe line with enmgine exhaust, and outlet side is connected by air pipe line with the secondary heat exchanger of engine aftertreatment system and bottom cycle system。
6. a kind of system improving EGR engine energy utilization rate as claimed in claim 5, it is characterized in that, the waste gas of described gas recirculation system, from enmgine exhaust, then passes through the air pipe line three grades of heat exchangers through bottom cycle system, enters the inlet end of exhaust-driven turbo-charger exhaust-gas turbo charger compressor。
7. a kind of system improving EGR engine energy utilization rate as claimed in claim 1, it is characterized in that, described engine-cooling system includes being circulated successively the cooling water tank of connection by cooling water pipeline, cooling water pump, electromotor, driver's cabin heat assembly, the first-class heat exchanger of bottom cycle system and engine radiator。
8. a kind of system improving EGR engine energy utilization rate as claimed in claim 7, is characterized in that, the connecting line that described electromotor and driver's cabin heat between assembly is provided with coolant temperature sensor；Described driver's cabin heats assembly and is provided with cabin temperature sensor；Described driver's cabin heats the connecting line between assembly and bottom cycle system and is provided with one-level coolant temperature sensor, and all of temperature sensor is all connected with data collecting system, and described data collecting system performs system with data analysis and is connected；Described data analysis performs the three-way magnetic valve of three-way magnetic valve and first-class heat exchanger that system heats assembly with driver's cabin and is connected。
9. improve a control method for EGR engine energy utilization rate, it is characterized in that, comprise the following steps:
S201: when bottoming cycle carries out, detection drives pump discharge end and the temperature of the temperature of the as received basis being positioned at first-class heat exchanger front end and cooling water, passes to data analysis and performs system；
S202: data analysis performs system and the two temperature contrasted；If differing by more than setting value, data analysis performs system and two three-way magnetic valves of first-class heat exchanger is sent instruction, and electromagnetic valve is positioned at the unobstructed state of heat exchanger；In first-class heat exchanger, otherwise do not carry out heat exchange, be made directly S204；
S203: cycle fluid carries out heat exchange with cooling water in first-class heat exchanger；
S204: cycle fluid carries out heat exchange at secondary heat exchanger and three grades of heat exchangers, cycle fluid absorbs heat；
S205: judge that whether as received basis temperature is more than saturation temperature: if it has, then illustrate that as received basis has reached capacity or hypersaturated state；If it is otherwise, as received basis heat absorption is described not, current working is not suitable for carrying out bottoming cycle, after the system halt setting time, re-starts S201；
S206: expansion apparatus is done work by cycle fluid, heat release within the condenser；
S207: determine whether the request of shutting down, if it has, then loop ends；If it has not, then arrive S201 to carry out next new circulation。
10. the control method improving EGR engine energy utilization rate, it is characterized in that, also include, when vehicle travels when relatively cold weather, driver opens vehicle heating according to self needing selection, temperature in the cooling water temperature of detection engine cool water out and driver's cabin, passes to data analysis and performs system；
If cooling water temperature exceedes setting value higher than cabin temperature, then data analysis performs system and heats the three-way magnetic valve of assembly to driver's cabin and driver's cabin radiator fan sends instruction, three-way magnetic valve is transformed into radiator state, radiator fan is opened, now cooling water flows through radiator, under the effect of radiator fan, carry out forced heat-exchanging, improve and drive indoor temperature；Otherwise, three-way magnetic valve is positioned at flow tube state, and radiator fan cuts out, and uses electromotor directly to drive air-conditioning to heat。
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| CN201610195051.3A CN105697189B (en) | 2016-03-31 | 2016-03-31 | System and control method for increasing energy utilization rate of EGR engine |
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| CN201610195051.3A CN105697189B (en) | 2016-03-31 | 2016-03-31 | System and control method for increasing energy utilization rate of EGR engine |
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| CN107605619A (en) * | 2017-09-04 | 2018-01-19 | 安徽江淮汽车集团股份有限公司 | Engine exhaust heat two-way staged retracting device, control method and control system |
| CN110985230A (en) * | 2019-12-16 | 2020-04-10 | 西安交通大学 | Automobile waste heat recycling system and operation method thereof |
| CN111874200A (en) * | 2020-07-07 | 2020-11-03 | 武汉理工大学 | LNG ship heat energy comprehensive utilization system |
| CN114497811A (en) * | 2022-02-18 | 2022-05-13 | 山东大学 | Low-energy-consumption battery thermal management system and working method thereof |
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| CN110985230A (en) * | 2019-12-16 | 2020-04-10 | 西安交通大学 | Automobile waste heat recycling system and operation method thereof |
| CN110985230B (en) * | 2019-12-16 | 2021-03-16 | 西安交通大学 | Automobile waste heat recycling system and operation method thereof |
| CN111874200A (en) * | 2020-07-07 | 2020-11-03 | 武汉理工大学 | LNG ship heat energy comprehensive utilization system |
| CN114497811A (en) * | 2022-02-18 | 2022-05-13 | 山东大学 | Low-energy-consumption battery thermal management system and working method thereof |
| CN114497811B (en) * | 2022-02-18 | 2023-11-17 | 山东大学 | Low-energy-consumption battery thermal management system and working method thereof |
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