CN106812575A - A kind of application blast pipe carries out the device and its control method of waste heat recovery - Google Patents
A kind of application blast pipe carries out the device and its control method of waste heat recovery Download PDFInfo
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- CN106812575A CN106812575A CN201611219557.XA CN201611219557A CN106812575A CN 106812575 A CN106812575 A CN 106812575A CN 201611219557 A CN201611219557 A CN 201611219557A CN 106812575 A CN106812575 A CN 106812575A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 26
- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002912 waste gas Substances 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 230000001172 regenerating effect Effects 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 30
- 230000005494 condensation Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000006870 function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses device and control method that a kind of application blast pipe carries out waste heat recovery, wherein, exhaust pipe of engine application double-decker is simultaneously combined with Rankine cycle system, can realize that waste heat recovery again can the warm management of the row of realization by control.In high speed high load working condition, in working medium passage in air gap pipes be full of organic working medium, blast pipe working medium passage as Rankine cycle evaporator, working medium absorb blast pipe in waste-gas heat, energy regenerating is carried out, while influence of the exhaust high temperature to engine peripheral element can be reduced；In startup stage and the low small load condition of row's temperature, still air is full of in air gap pipes, blast pipe has heat insulating function, reduces exhaust energy loss, adiabatic heat-insulation is carried out to engine exhaust.
Description
Technical field
The present invention relates to automotive engineering, more particularly to the technology that vehicle motor waste heat from tail gas is reclaimed, and in particular to a kind of
The device and its control method of waste heat recovery are carried out using blast pipe.
Background technology
In the distribution of diesel engine energy, 40% is about in middle rev-happy engine retardation efficiency, and about 60% energy is logical
Exhaust, radiation and methods for cooling loss are crossed, wherein being vented the energy accounting taken away is about 30%.Realized to hair by technological means
Motivation exhaust heat is recycled, and can significantly improve engine efficiency, reduces engine consumption.
Diesel engine after treatment transformation efficiency is higher to row's temperature requirement, under engine cold-start or small load condition, hair
Motivation row's temperature is low, and post processing transformation efficiency is low, and it is poor to discharge, more and more harsh with discharging, and diesel engine increasingly payes attention to row's warm
Management.
Prior art haves the shortcomings that following：
1st, available engine uses individual layer blast pipe, and influence of the high temperature of blast pipe to adjacent component is larger during big load,
It is especially serious for intake and exhaust homonymy engine, install exhaust pipe thermal insulation shield more additional and protected；
2nd, available engine uses individual layer blast pipe, no insulation heat insulating function, startup stage and the relatively low operating mode of row's temperature,
Portion discharge energy is scattered and disappeared by blast pipe, delivery temperature reduction, is unfavorable for that efficiency of post treatment is improved.
The content of the invention
To solve the above problems, the present invention devises a kind of application blast pipe carries out the device and its controlling party of waste heat recovery
Method, the purpose of the present invention is achieved through the following technical solutions.
A kind of application blast pipe carries out the device of waste heat recovery, and described device includes：
The blast pipe of double-decker, it includes：Tail pipe exhaust passage and blast pipe working medium passage, wherein,
Tail pipe exhaust passage is connected with engine body, and the waste gas for the engine body to be discharged is discharged,
Delivery temperature pressure sensor is provided with the wall of the tail pipe exhaust passage, the temperature and pressure for detecting exhaust,
Blast pipe working medium passage is arranged on the tail pipe exhaust passage outside, and inside is filled with working medium；
One or two single-pass magnetic valve, the two or two single-pass magnetic valve, the three or two single-pass magnetic valve and the four or two list
Three-way electromagnetic valve, it is connected with the blast pipe working medium passage, and controls its break-make by control unit；
First working medium pump and the second working medium pump, it is connected with the blast pipe working medium passage, and the first working medium pump is used for bright
Circulation is agreed to the working medium pressurization in blast pipe working medium passage, by work in blast pipe working medium passage when the second working medium pump is for low row's temperature
Matter is extracted out, is made in blast pipe working medium passage full of still air；
Working medium sensor, it is arranged at after the blast pipe working medium passage, for detecting working medium state；
Three-way magnetic valve and condenser, blast pipe working medium passage are connected via the three-way magnetic valve with expanding machine, and three are powered
Whether magnet valve enters condenser for controlled medium by path, and when working medium state meets to be required, three-way magnetic valve is not powered,
Working medium enters condenser after entering expanding machine acting, and fluid reservoir, the fluid reservoir are entered through the condensed working medium of the condenser
On be provided with fluid reservoir pressure-releasing electromagnetic valve and fluid reservoir pressure sensor；
Air filter, it is connected with blast pipe working medium passage, realizes entering the air cleaner of blast pipe working medium passage.
Wherein, turbocharger is set for being pressurized to engine charge, whirlpool on the tail pipe exhaust passage
Final vacuum pipe is used to discharge waste gas, and the whirlpool heel row tracheae is connected with after-treatment device and waste gas is post-processed.
The control method that a kind of exhaust tube remaining heat is reclaimed, the control method is to carry out waste heat using above-mentioned application blast pipe
Come what is performed, the control method includes the device of recovery：
Organic working medium is full of in high speed high load working condition, the blast pipe of double-decker, blast pipe working medium passage is as bright
Agree the evaporator of circulation, the working medium in blast pipe working medium passage absorbs the heat in waste gas, becomes superheated steam, and by described
Expanding machine does work, and carries out energy regenerating；
In startup stage and the low small load condition of row's temperature, still air is full of in the blast pipe of double-decker, to starting
Machine exhaust carries out adiabatic heat-insulation.
Described control method, implements process as follows：
In high speed high load working condition, when the engine exhaust temperature reaches requirement temperature, described control unit control
One or the two single-pass magnetic valve, the four or the two single-pass magnetic valve are connected, and according to the working medium sensor feedback
Working medium state control the first working medium revolution speed makes the power pressure for entering working medium passage meet requirement, meanwhile, when the work
When matter sensor detects working medium state and is unsatisfactory for requiring, the three-way magnetic valve power-up working medium enters the condensation by path
Device, when working medium state meets to be required, the three-way magnetic valve is not powered, and working medium enters the condensation after entering expanding machine acting
Device, condensed working medium enters the fluid reservoir, is pressurizeed by first working medium pump afterwards, completes a Rankine cycle；
In cold start-up or small load condition, when the engine exhaust temperature is less than temperature is required, the control list
Unit's control first working medium pump shuts down, and controls the one or the two single-pass magnetic valve, the four or the two single-pass electromagnetism
Valve is closed, and controls the two or the two single-pass magnetic valve, the three or the two single-pass magnetic valve to connect, and controls second working medium
Pump is operated, and working medium in the blast pipe working medium passage is extracted out, by entering the fluid reservoir after condenser condensation, while
Air enters the blast pipe working medium passage by the air filter, the two or the two single-pass magnetic valve, by described
Working medium whether emptying in working medium sensor detection blast pipe working medium passage, when working medium emptying in the blast pipe working medium passage
Afterwards, described control unit controls the two or the two single-pass magnetic valve, the three or the two single-pass closed electromagnetic valve, control second
Working medium pump shuts down, and makes in blast pipe working medium passage full of still air.
Especially, when the pressure of the fluid reservoir is more than or equal to pressure is required, the fluid reservoir pressure-releasing electromagnetic valve is added
Electricity, realizes that the fluid reservoir is deflated, when the pressure of the fluid reservoir is less than pressure is required, according to engine operating conditions, really
Surely proceed waste heat recovery and still terminate waste heat recovery.
The advantage of the invention is that：
1st, blast pipe uses air gap pipes structure, can realize that waste heat recovery is acted on adiabatic heat-insulation by control；
2nd, it is quiet by being full of in the working medium passage for controlling air gap pipes in startup stage and the low small load condition of row's temperature
State air, blast pipe has heat insulating function, reduces exhaust energy transmission loss, carries out adiabatic heat-insulation to engine exhaust, favorably
In efficiency of post treatment lifting；
3rd, high speed high load working condition, blast pipe working medium passage is full of working medium, as Rankine cycle evaporator, carries out waste heat and returns
Receive, improve engine efficiency；
4th, blast pipe working medium passage solves traditional rankine cycle evaporator arrangement difficulty as Rankine cycle evaporator,
It is easy to Rankine cycle system to arrange；
5th, as Rankine cycle evaporator, inside row's temperature is high, is conducive to improving Rankine cycle efficiency for blast pipe working medium passage；
6th, high speed high load working condition, blast pipe working medium passage is full of working medium, makes the reduction of blast pipe surface temperature, reduces high temperature
Influence to adjacent component, while exhaust pipe thermal insulation shield can be cancelled.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 shows the waste-heat recovery device system structure diagram according to embodiment of the present invention.
Fig. 2 shows the control method schematic flow sheet of the waste-heat recovery device according to embodiment of the present invention.
Wherein, 1 engine body, 2 tail pipe exhaust passages, 3 delivery temperature pressure sensors, 4 turbocharger, 5 whirlpools
Heel row tracheae, 6 after-treatment devices, 7 the 1st single-pass magnetic valves, 8 the 2nd 2 single-pass magnetic valves, 9 air filters, 10 rows
It is tracheae working medium passage, 11 first working medium pumps, 12 fluid reservoirs, 13 fluid reservoir pressure-releasing electromagnetic valves, 14 fluid reservoir pressure sensors, 15 cold
Condenser, 16 control units, 17 expanding machines, 18 three-way magnetic valves, 19 second working medium pumps, 20 the 3rd 2 single-pass magnetic valves, 21
Four or two single-pass magnetic valves, 22 working medium sensors
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in accompanying drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.Conversely, there is provided these implementation methods are able to be best understood from the disclosure, and can be by this public affairs
The scope opened it is complete convey to those skilled in the art.
System structure diagram of the invention is as shown in Figure 1.In present system, exhaust pipe of engine application double-decker
And combined with Rankine cycle system, in engine operation process, by controller control, the system can realize waste heat recovery again
Can the warm management of the row of realization.In high speed high load working condition, in air gap pipes be full of organic working medium, blast pipe working medium passage as
The evaporator of Rankine cycle, working medium heat in absorption waste gas in working medium passage, becomes superheated steam, and do by expanding machine
Work(, carries out energy regenerating；In startup stage and the low small load condition of row's temperature, by the working medium passage for controlling air gap pipes
Full of still air, blast pipe has heat insulating function, reduces exhaust energy transmission loss, and adiabatic guarantor is carried out to engine exhaust
Temperature.
The waste-heat recovery device includes：
The blast pipe of double-decker, it includes：Tail pipe exhaust passage 2 and blast pipe working medium passage 10,
Tail pipe exhaust passage 2 is connected with engine body 1, for the waste gas discharge for discharging the engine body 1,
Be provided with the wall of the tail pipe exhaust passage 2 delivery temperature pressure sensor 3 for detect be vented temperature and pressure；
Blast pipe working medium passage 10 is arranged on the outside of the tail pipe exhaust passage 2, and inside is filled with working medium；
One or two single-pass magnetic valve the 8, the 3rd 2 single-pass magnetic valve 20 and the 4th 2 of the 7, the 2nd 2 single-pass magnetic valve
Position single-pass magnetic valve 21 is connected with blast pipe working medium passage 10, and controls its break-make by control unit 16；
Two working medium pumps, the first working medium pump 11 and the second working medium pump 19, it is connected with the blast pipe working medium passage 10,
First working medium pump 11 is used for Rankine cycle to the working medium pressurization in blast pipe working medium passage, when the second working medium pump 19 is used for low row's temperature
Working medium in blast pipe working medium passage is extracted out, is made in working medium passage full of still air；
Working medium sensor 22 is arranged at after the blast pipe working medium passage 10, for detecting working medium state；
Three-way magnetic valve 18 and condenser 15, blast pipe working medium passage 10 is via the three-way magnetic valve 18 and the phase of expanding machine 17
Even, three-way magnetic valve 18 is used for whether controlled medium to enter condenser 15 by path, when working medium state meets to be required, threeway
Magnetic valve 18 is not powered, and working medium enters after expanding machine 17 does work and enters condenser 15, through the condensed working medium of the condenser 15
Into fluid reservoir 12, fluid reservoir pressure-releasing electromagnetic valve 13 and fluid reservoir pressure sensor 14 are provided with the fluid reservoir 12；
Air filter 9, is connected with blast pipe working medium passage, realizes entering the air cleaner of blast pipe working medium passage.
Wherein, turbocharger 4 is set on the tail pipe exhaust passage 2 to be pressurized for engine charge, behind whirlpool
Blast pipe 5 is used to discharge waste gas, and the whirlpool heel row tracheae 5 is connected with after-treatment device 6 and waste gas is post-processed.
The device that above-mentioned application blast pipe carries out waste heat recovery is controlled it using following control method and performed remaining
Recuperation of heat：
In high speed high load working condition, when detecting that engine row's temperature reaches requirement by delivery temperature pressure sensor 3, control
Unit 16 controls the 7, the 4th 2 single-pass magnetic valve of the one or two single-pass magnetic valve to connect, and fed back according to working medium sensor 22
The working medium state control rotating speed of the first working medium pump 11 makes the power pressure for entering working medium passage meet requirement.Simultaneously in order to prevent bright
Agree the loop start stage, working medium evaporation not exclusively enters expanding machine, damages expanding machine, and system sets three-way magnetic valve 18, when
When working medium sensor 22 detects working medium state and is unsatisfactory for requiring, the power-up working medium of three-way magnetic valve 18 enters cold by bypass
Condenser 15, when working medium state meets to be required, three-way magnetic valve is not powered, and working medium enters condenser after entering expanding machine acting
15, condensed working medium enters fluid reservoir 12, is pressurizeed by the first working medium pump 11 afterwards, completes a Rankine cycle.
In cold start-up or small load condition, when engine exhaust temperature is less than temperature is required, control unit 16 is controlled
First working medium pump 11 is shut down, and control the 7, the 4th 2 single-pass magnetic valve 21 of the one or two single-pass magnetic valve is closed, control the
The 8, the 3rd 2 single-pass magnetic valve 20 of two or two single-pass magnetic valves is connected, control the second working medium pump operating, and blast pipe working medium is led to
Working medium is extracted out in road, by entering fluid reservoir 12 after the condensation of condenser 15, while air is by the 9, the 2nd 2, air filter
Single-pass magnetic valve enters blast pipe working medium passage.Detect whether working medium has arranged in blast pipe working medium passage by working medium sensor 22
Only, after working medium emptying in working medium passage, control the 8, the 3rd 2 single-pass electromagnetism of the two or two single-pass magnetic valve of control unit 16
Valve 20 is closed, and the second working medium pump of control shuts down.Still air is full of in blast pipe working medium passage, the work of adiabatic heat-insulation is played
With, be conducive to improving delivery temperature, efficiency of post treatment is improved, improve discharge.
Above-mentioned control method realizes that flow is as shown in Figure 2.
The key point of the overall inventive concept of the waste-heat recovery device (system) that the application is related to：
1st, blast pipe uses double-decker；
2nd, air gap pipes are combined with Rankine cycle, can not only have been realized waste heat recovery but also can have been carried out adiabatic guarantor to exhaust
Temperature；
3rd, system sets first, second, third, fourth 2 single-pass magnetic valves, by controlling different magnetic valve break-make realities
Existing difference in functionality；
4th, system is provided with air filter 9, it is ensured that in low row's temperature, into the air cleaner of blast pipe working medium passage；
5th, system sets two working medium pumps, and the first working medium pump is used for normal Rankine cycle and working medium is pressurizeed, the second working medium pump
Working medium in blast pipe working medium passage is extracted out during for low row's temperature, is made in working medium passage full of still air；
6th, system is provided with three-way magnetic valve 18, according to the state after working medium evaporation, realizes bypass and the acting of working medium, has
Beneficial to protection expanding machine；
7th, pressure sensor and pressure-releasing electromagnetic valve are provided with fluid reservoir, can be with real-time monitoring wherein pressure, it is ensured that system
Safety.
Additionally, the blast pipe in specification embodiment is whirlpool front exhaust manifold, it is not intended as specific restriction, and the waste heat is returned
Receiving apparatus can apply to whole blast pipe.
In addition, in the present invention, air enters blast pipe working medium passage by cleaner, plays heat insulating function.Can be with
Using other gases, such as nitrogen, argon gas inert gas.
In order to reach control purpose, different sensors can be installed additional in diverse location according to different sensors characteristic.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Enclose and be defined.
Claims (5)
1. a kind of application blast pipe carries out the device of waste heat recovery, it is characterised in that described device includes：
The blast pipe of double-decker, it includes：Tail pipe exhaust passage and blast pipe working medium passage, wherein,
Tail pipe exhaust passage is connected with engine body, for the waste gas discharge for discharging the engine body, described
Delivery temperature pressure sensor is provided with the wall of tail pipe exhaust passage, the temperature and pressure for detecting exhaust,
Blast pipe working medium passage is arranged on the tail pipe exhaust passage outside, and inside is filled with working medium；
One or two single-pass magnetic valve, the two or two single-pass magnetic valve, the three or two single-pass magnetic valve and the four or two single-pass electricity
Magnet valve, it is connected with the blast pipe working medium passage, and controls its break-make by control unit；
First working medium pump and the second working medium pump, it is connected with the blast pipe working medium passage, and the first working medium pump is followed for Rankine
Ring pressurizes to the working medium in blast pipe working medium passage, and the second working medium pump is used to take out working medium in blast pipe working medium passage during low row's temperature
Go out, make in blast pipe working medium passage full of still air；
Working medium sensor, it is arranged at after the blast pipe working medium passage, for detecting working medium state；
Three-way magnetic valve and condenser, blast pipe working medium passage are connected via the three-way magnetic valve with expanding machine, three-way magnetic valve
Whether condenser entered by path for controlled medium, when working medium state meets to be required, three-way magnetic valve is not powered, working medium
Enter condenser after into expanding machine acting, fluid reservoir is entered through the condensed working medium of the condenser, set on the fluid reservoir
It is equipped with fluid reservoir pressure-releasing electromagnetic valve and fluid reservoir pressure sensor；
Air filter, it is connected with blast pipe working medium passage, realizes entering the air cleaner of blast pipe working medium passage.
2. application blast pipe as claimed in claim 1 carries out the device of waste heat recovery, it is characterised in that the tail pipe exhaust
Turbocharger is set for being pressurized to engine charge, final vacuum pipe in whirlpool is used to discharge waste gas, described on passage
Whirlpool heel row tracheae is connected with after-treatment device and waste gas is post-processed.
3. a kind of control method that exhaust tube remaining heat is reclaimed, the control method is to use application exhaust as claimed in claim 1
Pipe carries out the device of waste heat recovery to perform, it is characterised in that the control method includes：
Organic working medium is full of in high speed high load working condition, the blast pipe of double-decker, blast pipe working medium passage is followed as Rankine
The evaporator of ring, the working medium in blast pipe working medium passage absorbs the heat in waste gas, becomes superheated steam, and by the expansion
Machine does work, and carries out energy regenerating；
In startup stage and the low small load condition of row's temperature, still air is full of in the blast pipe of double-decker, engine is arranged
Gas carries out adiabatic heat-insulation.
4. control method as claimed in claim 3, it is characterised in that implement process as follows：
In high speed high load working condition, when the engine exhaust temperature reaches requirement temperature, described control unit control is described
One or two single-pass magnetic valve, the four or the two single-pass magnetic valve are connected, and according to the working medium of the working medium sensor feedback
State control the first working medium revolution speed makes the power pressure for entering working medium passage meet requirement, meanwhile, when the working medium is passed
When sensor detects working medium state and is unsatisfactory for requiring, the three-way magnetic valve power-up working medium enters the condenser by path,
When working medium state meets to be required, the three-way magnetic valve is not powered, and working medium enters the condenser after entering expanding machine acting,
Condensed working medium enters the fluid reservoir, is pressurizeed by first working medium pump afterwards, completes a Rankine cycle；
In cold start-up or small load condition, when the engine exhaust temperature is less than temperature is required, described control unit control
Make first working medium pump to shut down, control the one or the two single-pass magnetic valve, the four or the two single-pass magnetic valve to close
Close, control the two or the two single-pass magnetic valve, the three or the two single-pass magnetic valve to connect, control the second working medium pump fortune
Turn, working medium in the blast pipe working medium passage is extracted out, by entering the fluid reservoir after condenser condensation, while air
Enter the blast pipe working medium passage by the air filter, the two or the two single-pass magnetic valve, by the working medium
Working medium whether emptying in sensor detection blast pipe working medium passage, after working medium emptying in the blast pipe working medium passage, institute
State control unit and control the two or the two single-pass magnetic valve, the three or the two single-pass closed electromagnetic valve, control the second working medium
Pump shuts down, and makes in blast pipe working medium passage full of still air.
5. control method as claimed in claim 4, it is characterised in that when the pressure of the fluid reservoir is more than or equal to requiring pressure
When, the fluid reservoir pressure-releasing electromagnetic valve is powered up, realize that the fluid reservoir is deflated, require pressure when the pressure of the fluid reservoir is less than
During power, according to engine operating conditions, it is determined that proceeding waste heat recovery still terminates waste heat recovery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611219557.XA CN106812575B (en) | 2016-12-26 | 2016-12-26 | A kind of device and its control method carrying out waste heat recycling using exhaust pipe |
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| CN201611219557.XA CN106812575B (en) | 2016-12-26 | 2016-12-26 | A kind of device and its control method carrying out waste heat recycling using exhaust pipe |
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| CN106812575B CN106812575B (en) | 2019-09-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459881A (en) * | 2020-11-12 | 2021-03-09 | 盐城工业职业技术学院 | Automobile auxiliary power system |
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| CN103089493A (en) * | 2011-10-27 | 2013-05-08 | 上海静迅电梯设备有限公司 | Micro-emission energy-saving high-pressure engine master device recycling heat of tail gas |
| CN103775243A (en) * | 2012-10-19 | 2014-05-07 | 易旭 | Automotive waste heat power generation technology by cyclically using engine coolant |
| CN103726950A (en) * | 2013-12-27 | 2014-04-16 | 天津大学 | Double-loop waste heat recovery system of two-stroke internal combustion engine |
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| CN112459881A (en) * | 2020-11-12 | 2021-03-09 | 盐城工业职业技术学院 | Automobile auxiliary power system |
| CN112459881B (en) * | 2020-11-12 | 2021-12-21 | 盐城工业职业技术学院 | Automobile auxiliary power system |
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