CN102529689A - Method for controlling exhaust gas heat recovery systems in vehicles - Google Patents
Method for controlling exhaust gas heat recovery systems in vehicles Download PDFInfo
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- CN102529689A CN102529689A CN2011103366444A CN201110336644A CN102529689A CN 102529689 A CN102529689 A CN 102529689A CN 2011103366444 A CN2011103366444 A CN 2011103366444A CN 201110336644 A CN201110336644 A CN 201110336644A CN 102529689 A CN102529689 A CN 102529689A
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- 238000000034 method Methods 0.000 title claims abstract description 104
- 238000011084 recovery Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 230000005540 biological transmission Effects 0.000 claims abstract description 99
- 238000012544 monitoring process Methods 0.000 claims abstract description 82
- 239000012080 ambient air Substances 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000012937 correction Methods 0.000 claims description 38
- 239000002912 waste gas Substances 0.000 claims description 33
- 230000001915 proofreading effect Effects 0.000 claims description 27
- 239000003570 air Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 47
- 238000001816 cooling Methods 0.000 description 27
- 239000002826 coolant Substances 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 230000004087 circulation Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
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- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/16—Outlet manifold
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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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Details Of Gearings (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
A method of operating an exhaust gas heat recovery (EGHR) system in a vehicle including an engine, a transmission, and an EGHR heat exchanger is provided. The method includes monitoring an engine water temperature and may include monitoring a transmission oil temperature and an ambient air temperature. The method includes comparing the monitored engine water temperature to one or more calibrated engine temperatures. Based upon the monitored temperatures and comparison to the calibrated temperatures, the method controls a two-way valve. The two-way valve is configured to be set to one of an engine position and a transmission position. The engine position allows heat-exchange communication between the EGHR heat exchanger and the engine, and the transmission position allows heat-exchange communication between the EGHR heat exchanger, the transmission, and the engine.
Description
Technical field
The disclosure relates to waste-gas heat withdrawal, recovery or the recirculation system of control vehicle.
Background technology
Combustion engine is through fuel and the burning produce power of (usually) air in combustion chamber.Combustion process in combustion engine produces power and comes moving vehicle, and the motion of translation in the combustion chamber is converted into rotation usually, but also produces heat.
Residues of combustion-unburned fuel, untapped oxygen and side production (often being the form of the waste gas of heat) are passed through exhaust system discharges, and makes residues of combustion leave driving engine.Waste gas heat reclaims and is designed to remove heat and it is delivered to water loop elsewhere from the waste gas of driving engine.Vehicle inside can use waste gas to heat, or thermal power unit can produce electric power from waste gas.
Summary of the invention
Provide a kind of waste-gas heat that is used for operating vehicle to reclaim the method for (EGHR) system, this vehicle comprises driving engine, change-speed box and EGHR H Exch.This method comprises the monitoring engine coolant-temperature gage, and comprises monitoring transmission oil temperature and ambient air temperature.Method comprises that engine water temperature and the one or more correction engine temperature with monitoring compares.Based on monitoring temperature and with the comparison of Tc, this method control two-way cock.
Two-way cock is configured to be set in engine location and the gear box position.Engine location allows the heat-exchange communication between EGHR H Exch and driving engine, and gear box position allows the heat-exchange communication between EGHR H Exch, change-speed box and the driving engine
This method can comprise that the engine water temperature with monitoring compares with proofreading and correct first engine temperature, and if the engine water temperature of monitoring be lower than and proofread and correct first engine temperature, set two-way cock to engine location.This method can comprise that also the transmission oil temperature with monitoring compares with correction first temperature of transmission; And if the transmission oil temperature of monitoring is lower than the engine water temperature of proofreading and correct first temperature of transmission and monitoring and is lower than and proofreaies and correct first engine temperature, set two-way cock to gear box position.
When combining accompanying drawing, carry out from following being used to and to like best modes more of the present invention that claim limits enclosed and the specific descriptions of other embodiment can easily be understood above-mentioned feature and advantage of the present invention, and further feature and advantage.
Description of drawings
Fig. 1 is the scheme drawing of exemplary blended power car transmission system, and this transmission system has waste gas heat recovery (EGHR) system with driving engine and change-speed box UNICOM;
Fig. 2 is the algorithm of control EGHR system as shown in Figure 1 and the indicative flowchart of method;
Fig. 3 is the indicative flowchart of the subprogram of method shown in Figure 2, shows the part of the ambient temperature that is used for gentleness (mild);
Fig. 4 is the indicative flowchart of another subprogram of method shown in Figure 2, shows the part that is used for colder ambient temperature; And
Fig. 5 is the indicative flowchart of another subprogram of method shown in Figure 2, shows to be used for extreme or the part of the ambient temperature of heat.
The specific embodiment
With reference to accompanying drawing, wherein in each figure any maybe situation under, similar reference number has illustrated the scheme drawing of waste gas heat recovery (EGHR) system corresponding to same or analogous parts among Fig. 1, relate generally to EGHR system 10.The combustion engine 12 of EGHR system 10 and vehicle (not shown) and change-speed box 14 optionally fluid fluidly with interchange of heat ground UNICOM.
Be described in detail although the present invention is directed to road vehicle application, it will be appreciated by those skilled in the art that application widely of the present invention.It will be understood to those of skill in the art that such as " top ", " below ", " on ", term such as D score is used to describe accompanying drawing, and the scope of the invention do not had any restriction, scope of the present invention is defined by the following claims.
Fig. 1 shows schematic control structure of the height that is used for EGHR system 10 or control system 20.Control system 20 can comprise one or more parts (not illustrating independently) with programmable storage of storage medium and appropriate amount, and it can store and carry out the control that one or more algorithms or method are carried out EGHR system 10.Each parts of control system 20 can comprise distributed control structure, for example based on the electronic control unit (ECU) of microprocessor.Add-on module or treater may reside in the control system 20.
Two-way cock 26 is configured to optionally control or be set in engine location and the gear box position.The engine location of two-way cock 26 allows the heat-exchange communication between EGHR H Exch 18 and driving engine 12.Gear box position allows in EGHR H Exch 18 and change-speed box 14 and driving engine 12 heat-exchange communication between the two.When two-way cock 26 was in gear box position, change-speed box water loop 24 was supplied cooling system conditioner or water from engine water loop 22 through main pump, if main pump is in work.28 circulations of transmission oil loop are from the lubricated and oil coolant of change-speed box 14.Two-way cock 26 can be operated by electricity, fluid-operated (for example passing through pilot valve) or operate to move till the driving engine and between the gear box position with suitable mode arbitrarily.
The actual boundary and the path of engine water loop 22 and change-speed box water loop 24 can be very small.Engine water loop 22 provides the UNICOM between driving engine 12 and the EGHR H Exch 18.Change-speed box water loop 24 provides the UNICOM between engine water loop 22 and the transmission oil loop 28.Two-way cock 26 has three ports: from temperature booster core 30 or first port or the ingress port directly from the coolant outlet of driving engine 12 water or cooling system conditioner introduced; Inlet fluid is connected to second port in engine water loop 22, thereby it is mobile to have only engine water loop 22 to have; And the 3rd port, it is fluidly coupled to change-speed box water loop 24 with inlet.
Except EGHR H Exch 18, EGHR system 10 comprises other H Exch or radiator.Temperature booster core 30 allows heats from main cabin (crew module) that the cooling system conditioner that leaves driving engine 12 or water are delivered to vehicle.Engine radiator 32 is water-air heat exchangers, and it is configured to optionally will be dissipated to from the heat of driving engine 12 and passes the ambient air that engine radiator 32 flows.The temperature controller (not shown) can be used to control cooling system conditioner from driving engine 12 flowing through engine radiator 32.Change-speed box radiator 34 is oil-air heat exchangers, and it is configured to optionally to be dissipated to from the heat in the transmission oil loop 28 of change-speed box 14 and passes the ambient air that change-speed box radiator 34 flows.
Although engine radiator 32 is shown schematically as side by side with change-speed box radiator 34; In the application of a lot of EGHR systems 10, engine radiator 32 can be arranged before and after the high-speed air flow location that gets into the under-vehicle zone with change-speed box radiator 34.Yet engine radiator 32 can be to be positioned at other positions in the vehicle with change-speed box radiator 34.As used herein, H Exch can refer to a lot of different equipment that are used for exchange heat energy between two media or two systems.
The actual direction that heat energy between any side of H Exch flows receives the temperature contrast of striding particular heat exchanger and Be Controlled.For example; If driving engine 12 is very cold; And at very hot weather, temperature controller allows through engine radiator 32 circulations, engine radiator 32 will warming coolant up to it reach (roughly) ambient temperature and then will be when coolant temperature surpasses ambient temperature the cooled engine cooling system conditioner.
Central authorities' H Exch 36 is oil to-water heat exchangers, and it allows in the transmission oil loop 28 of change-speed box 14 and the heat-exchange communication between the change-speed box water loop 14.Central authorities' H Exch 36 allows heats to be delivered to transmission oil loop 28 so that the change-speed box 14 and reduce loss of traction of heating from change-speed box water loop 24.In addition, as described herein, central H Exch 36 also allow change-speed box 14 and change-speed box radiator 34 under heat or extreme condition from driving engine 12 dissipation surplus heat.
Change-speed box temperature controller 44 is controlled at flowing between transmission oil loop 28 and the change-speed box radiator 34.Change-speed box temperature controller 44 is depicted as and is in its direct home position, and its guide exhaust gas flow turns back to change-speed box 14 and without change-speed box radiator 34 from central H Exch 36.When change-speed box temperature controller 44 is switched, when upset or other modes are actuated the heat radiation position-shown in Fig. 1 dotted line and mark and be conducted through change-speed box radiator 34 before the oil that returns from central H Exch 36 for element 45-is returning change-speed box 14.
When change-speed box temperature controller 44 is in the heat radiation position (shown in 45 among Fig. 1), heat can transmit or be passed to ambient air via change-speed box radiator 34 from change-speed box 14 or central H Exch 36.For example, and without limitation, change-speed box temperature controller 44 can be machinery or dynamo-electric temperature controller, and it is by opening greater than 82 ℃ oil temperature or greater than 92 ℃ oily temperature in the transmission oil loop 28, and this depends on the size of change-speed box radiator 34.
Flow arrow shown in Fig. 1 so that be illustrated in the certain operational modes flow direction and the path of in some zones of EGHR system 10 and parts, passing.EGHR bypass disc 42 is depicted as and is in the non-bypass mode, thereby exhaust-gas flow is through EGHR H Exch 18.Change-speed box temperature controller 44 is depicted as and is in direct home position, thereby oil is not through change-speed box radiator 34.Two-way cock 26 is depicted as and is in gear box position, thereby change-speed box water loop 24 is communicated with engine water loop 22 fluids.When two-way cock 26 is in gear box position, the heat-exchange communication that central H Exch 36 allows between engine water loop 22 (via change-speed box water loop 24) and transmission oil loop 28.
The temperature of the ambient air of ambient air sensor 46 monitoring round of vehicle (and passing vehicular movement), and be communicated with control system 20.Control system 20 or environment temperature sensor 46 compare one in the thermal environment temperature of the benign environment temperature of the cold ambient temperature of ambient air temperature and the calibration of monitoring, calibration and calibration.Each base measuring temperature of mentioning in this article can be confirmed through the test and the modeling of EGHR system 10 and vehicle.In addition, base measuring temperature can change based on the life cycle of vehicle or its parts or based on the operating characteristic of the known vehicle with EGHR system 10 at the vehicle life period.It only is exemplary providing the value that is used for base measuring temperature, and these values and be not intended to limit scope of the present invention, limits in the claim of the present invention only if they are included in.
With reference now to Fig. 2-5,, and continues, wherein show the algorithm of the waste gas recovery that is used to control the EGHR system 10 shown in Fig. 1 or the indicative flowchart of method 200 with reference to figure 1.Algorithm or method 200 are not necessary in the actual step shown in Fig. 2-5 in proper order.Step can be resequenced, and step can be omitted, and can comprise additional step.In addition, method 200 can be a part or the subprogram of other algorithm or method.
Based on the purpose of example, method 200 can be described with reference to element and the parts describing and illustrate about Fig. 1, and can be carried out by control system 20.Yet other parts can be used to implementation method 200, and the present invention is defined by the following claims.Arbitrary steps can be carried out through a plurality of parts in control system 20.
Fig. 2 shows the high level figure of method 200.Fig. 3 shows the gentle subprogram 300 that during the benign environment temperature, takes place of method 200; Fig. 4 shows the hail program 400 that during cold ambient temperature, takes place of method 200; And Fig. 5 shows the heater program 500 that during the thermal environment temperature, takes place of method 200.
Step 210: beginning
This method 200 can begin in beginning or initial step place, this time phase method 200 monitoring EGHR systems 10 and vehicle operation conditions.Initialization can respond that vehicle operators is inserted ignition key or the response specified conditions are coincide (for example response from chaufeur or with the lower category negative torque request (braking or deceleration request) of the cruise control module that combines of predetermined or instruction) and take place.Alternatively, method 200 can be moved when vehicle uses or circulation consistently consistently.
Step 212: confirm environment, change-speed box and engine temperature
Step 214: ambient air and Tc are compared
If method 200 is confirmed temperature in gentle scope, method 200 is carried out gentle subprogram 300.If method 200 is confirmed temperature in cold scope, method 200 is carried out hail program 400.If method 200 is confirmed temperature at heat rating, method 200 is carried out heater program 500.
With reference now to Fig. 3,, and continues wherein to show the indicative flowchart of gentle subprogram 300 with reference to Fig. 1-2.Gentle subprogram 300 is parts of method shown in Figure 2, and shown in Fig. 2 as the part of the piece that marks with label 300.Can be merely the part of gentle subprogram 300 in the step shown in the diagram of circuit of Fig. 3, thereby method 200 can be included in other steps in the gentle subprogram 300.The mild temperature scope takes place when being between cold range of temperatures and the hot range of temperatures in that ambient air temperature is monitored.
Step 310: is engine temperature less than proofreading and correct first temperature?
Shown in Fig. 3-5, answer the basic of (being) for certain and confirm that step is along indicating "+" symbol path of (mathematics adds or additive operator).Similarly, definite step of answering (denying) along the path that indicates "-" symbol (mathematics subtracts or subtraction operator) negatively.
Step 312: engine warm-up pattern
If method 200 is confirmed the engine water temperature of monitoring and is lower than correction first engine temperature that then 200 pairs of EGHR systems of method 10 carry out the engine warm-up patterns.According to the structure of driving engine 12, proofread and correct that operation can influence fuel efficiency under first engine temperature being lower than.Thus, method 200 is in the engine warm-up pattern EGHR system 10 to utilize any heat that can obtain from the waste gas through EGHR H Exch 18 to increase the temperature of driving engine 12.
Step 314: valve is set to engine location
Proofread and correct first engine temperature if the engine water temperature that monitors is lower than, then the execution of engine warm-up pattern comprises that control (setting) two-way cock 26 is to engine location.Control system 20 can be based on method 200 confirm to actuate two-way cock 26.In addition, EGHR bypass disc 42 is corrected remaining on non-bypass position, because the temperature of the cooling system conditioner through engine water loop 22 is not enough to actuate or trigger bypass disc.
In the time of in being in the engine warm-up pattern, hot waste gas passes through EGHR H Exch 18 through exhaust system 16 and by 42 guiding of EGHR bypass disc.Cooling system conditioner leaves driving engine 12 and passes through temperature booster core 30.Two-way cock 26 prevents that ANALYSIS OF COOLANT FLOW from passing through change-speed box water loop 24, thereby cooling system conditioner is only through 22 circulations of engine water loop.Waste gas transmits heat to cooling system conditioner in engine water loop 22, and it turns back to driving engine 12 and the driving engine 12 of heating.
Although change-speed box water loop 24 is not flowed, central H Exch 36 can be passed through by recycle oil in transmission oil loop 28.The temperature of change-speed box 14 is roughly controlled by the heat that in change-speed box 14, produces with through the heat that change-speed box radiator 34 dissipates, if change-speed box temperature controller 44 moves to the heat radiation position.
Step 316: is temperature of transmission less than proofreading and correct first temperature?
If method 200 confirms that the transmission oil temperature of monitoring is equal to or higher than (promptly being not less than) and proofreaies and correct first engine temperature, then method 200 need not get into the engine warm-up pattern.Method 200 comprises that the transmission oil temperature with monitoring compares with correction first temperature of transmission.For example, but indefiniteness, proofread and correct first temperature of transmission and can be about 80 degrees centigrade.
According to the structure of change-speed box 14, proofread and correct that operation can influence fuel efficiency under first temperature of transmission being lower than.Yet if the gearbox oil temperature that monitors is spent height, change-speed box 14 possibly influenced negatively.
Step 318: change-speed box warm up mode
If the transmission oil temperature of monitoring is lower than the engine water temperature of proofreading and correct first temperature of transmission and monitoring and is lower than correction first engine temperature, then method 200 will be controlled EGHR system 10 to the change-speed box warm up mode.In the change-speed box warm up mode, be delivered to transmission oil loop 28 and change-speed box 14 through central H Exch 36 from driving engine 12, EGHR H Exch 18 or both heats.
Step 320: valve is set to gear box position
In the time of in being in the change-speed box warm up mode, method 200 comprises sets two-way cock 26 to gear box position.When two-way cock 26 was in gear box position, cooling system conditioner was through temperature booster core 30 and be conducted through change-speed box water loop 24 and central H Exch 36 then, advances to EGHR H Exch 18 then, and return engine 12.Be in any time of change-speed box warm up mode in EGHR system 10, two-way cock 26 will be set to gear box position.
During the change-speed box warm up mode, will be delivered to change-speed box 14 through central H Exch 36 from the heat of driving engine 12.In addition, will be delivered to engine water loop 22 with the temperature of rising driving engine 12 or be full of the heat that is delivered to change-speed box 14 from EGHR H Exch 18 from the heat of waste gas.If engine temperature significantly raises during the change-speed box warm up mode, EGHR bypass disc 42 will be closed (for example by the wax motor driven) to bypass position (among Fig. 1 shown in 43), and prevent to be delivered to engine water loop 22 from the heat of waste gas.The change-speed box warm up mode is shown in Fig. 1, wherein the heat-exchange communication that allows between EGHR H Exch 18, driving engine 12 and change-speed box 14 of bypass disc 26.
Be similar to the engine warm-up pattern, method 200 can be in the time cycle of being scheduled to or calculating in the change-speed box warm up mode, and wherein two-way cock 26 is set to gear box position.Yet method 200 can circulate and repeat repeatedly, and the change-speed box warm up mode can continue to confirm that up to circulation subsequently the situation of EGHR system 10 changes that method 200 forwards another operation mode to then.Be in any time of change-speed box warm up mode in EGHR system 10, two-way cock 26 will be set to gear box position.
Step 322: change-speed box refrigerating mode
Be lower than correction first engine temperature if the transmission oil temperature of monitoring is higher than the engine water temperature of proofreading and correct first temperature of transmission and monitoring, then method 200 will be controlled EGHR system 10 to the change-speed box refrigerating mode.In the change-speed box refrigerating mode, be maintained in the transmission oil loop 28 or from the heat of change-speed box 14 and dissipate through change-speed box radiator 34.
Step 324: valve is set to engine location
In the time of in being in the change-speed box refrigerating mode, method 200 comprises sets two-way cock 26 to engine location.When two-way cock 26 is in engine location, there is not ANALYSIS OF COOLANT FLOW to occur in the change-speed box water loop 24.Thus, heat does not exchange to change-speed box 14 through central H Exch 36.
During the change-speed box refrigerating mode, cooling system conditioner continues to flow through engine water loop 22, and the temperature of driving engine 12 will only be controlled by EGHR bypass disc 42.Oil continues to cycle through transmission oil loop 28.Yet,, do not have heat will be passed to change-speed box 14 owing to there is not ANALYSIS OF COOLANT FLOW to pass through central H Exch 36.If the temperature build-up of change-speed box 14 is to actuating or trigger on the required level of change-speed box temperature controller 44, fluid will flow through change-speed box radiator 44 and from the transmission oil loop 28 dissipation heats, cool off change-speed box 14 thus.
With reference now to Fig. 4,, and continues wherein to show the indicative flowchart of hail program 400 with reference to figure 1-3.Hail program 400 is parts of method shown in Figure 2, and shown in Fig. 2 as the part of the piece that marks with label 400.Can be merely the part of hail program 400 in the step shown in the diagram of circuit of Fig. 4, thereby method 200 can be included in other steps in the hail program 400.Cold range of temperatures occurs under the mild temperature scope.Hail program 400 can confirm ambient temperature is lower than whenever being called of correction cold ambient temperature in method 200.
Step 410: is engine temperature less than proofreading and correct second temperature?
If the ambient temperature of monitoring is lower than the correction cold ambient temperature, method 200 comprises that the engine water temperature with monitoring compares with correction second engine temperature.Proofreading and correct second engine temperature can be identical or different with correction first engine temperature.For example, but indefiniteness, proofreading and correct second engine temperature can be 60 degrees centigrade and proofread and correct first engine temperature for about 75 degrees centigrade.Proofreading and correct second engine temperature can be greater than proofreading and correct first engine temperature, because colder ambient air temperature provides less heat to driving engine 12 relatively.
Step 412: engine warm-up pattern
If method 200 is confirmed the engine water temperature of monitoring and is lower than correction second engine temperature that then 200 pairs of EGHR systems of method 10 carry out the engine warm-up patterns.Method 200 is in EGHR system 10 in the engine warm-up pattern, under the situation that can obtain any heat from the waste gas through EGHR H Exch 18, to increase the temperature of driving engine 12.
Step 414: valve is set to engine location
Carrying out the engine warm-up pattern comprises control or sets two-way cock 26 to engine location.Control system 20 can be based on method 200 confirm to actuate two-way cock 26.In addition, EGHR bypass disc 42 is corrected remaining on non-bypass position, because the temperature of the cooling system conditioner through engine water loop 22 is not enough to actuate or trigger bypass disc.
During the engine warm-up pattern of benign environment subprogram shown in Figure 3, when EGHR system 10 was in the engine warm-up pattern, hot waste gas was advanced and is passed through EGHR H Exch 18 through exhaust system 16 and by 42 guiding of EGHR bypass disc.Cooling system conditioner leaves driving engine 12, and through temperature booster core 30, and two-way cock 26 prevents that ANALYSIS OF COOLANT FLOW from passing through change-speed box water loop 24.Cooling enters only to cycle through engine water loop 22.Waste gas transmits heat to cooling system conditioner in engine water loop 22, and it returns with the driving engine 12 of heating.
Step 416: the positive moment of torsion of engine producing?
If method 200 is confirmed the engine water temperature of monitoring and is not less than correction second engine temperature that then method 200 execution are to the monitoring of auto stop mode.Auto stop mode stops, closing at vehicle or takes place when being cut to the fuel oil of driving engine 12.In other words, auto stop mode takes place when driving engine does not produce positive moment of torsion.
Step 418: change-speed box warm up mode
If driving engine 12 is not to be in auto stop mode, thereby driving engine 12 produces positive moment of torsion, so method 200 will be controlled EGHR system 10 to the change-speed box warm up mode.In the change-speed box warm up mode, during cold ambient temperature, from the heat of driving engine 12, be delivered to transmission oil loop 28 and change-speed box 14 through central H Exch 36 from the waste heat of EGHR H Exch 18 or from both heat.
Step 420: valve is set to gear box position
In the time of in being in the change-speed box warm up mode, method 200 is set two-way cock 26 to gear box position.When two-way cock 26 was in gear box position, cooling system conditioner was through temperature booster core 30 and be conducted through change-speed box water loop 24 and central H Exch 36 then, advances to EGHR H Exch 18 then, and return engine 12.Be in any time of change-speed box warm up mode in EGHR system 10, two-way cock 26 will be set to gear box position.
During the change-speed box warm up mode, will be delivered to change-speed box 14 through central H Exch 36 from the heat of driving engine 12.In addition, the heat from the waste gas that leaves EGHR H Exch 18 is delivered to engine water loop 22 also Zhongdao change-speed boxs 14 from this EGHR H Exch 18.
Step 422: auto stop mode
If driving engine 12 is in auto stop mode, driving engine 12 does not produce moment of torsion and does not roughly produce heat.In addition, during auto stop mode, complementary pump 38 will be opened providing pressure to engine water loop 22, and if connect by two-way cock 26, then be provided to change-speed box water loop 24.
Step 424: is temperature of transmission less than proofreading and correct second temperature?
After definite driving engine 12 is in auto stop mode,, method 200 compares with correction second temperature of transmission so comprising the transmission oil temperature with monitoring.For example, and be not determinate, proofreading and correct second temperature of transmission can be roughly 70 degrees centigrade, and it is lower than the first correction temperature of transmission that is used for benign environment temperature subprogram 300.
Step 426: change-speed box warm up mode
If driving engine 12 is not to be in auto stop mode, and the transmission oil temperature of monitoring is lower than and proofreaies and correct second temperature of transmission, and then method 200 will be controlled EGHR system 10 once more to the change-speed box warm up mode.In the change-speed box warm up mode, during cold ambient temperature, from the heat of driving engine 12, be delivered to transmission oil loop 28 and change-speed box 14 through central H Exch 36 from the waste heat of EGHR H Exch 18 or from both heat.
Step 428: valve is set to gear box position
In the time of in being in the change-speed box warm up mode, method 200 is set two-way cock 26 to gear box position.When two-way cock 26 was in gear box position, cooling system conditioner was through temperature booster core 30 and be conducted through change-speed box water loop 24 and central H Exch 36 then, advances to EGHR H Exch 18 then, and return engine 12.
During the change-speed box warm up mode, will be delivered to change-speed box 14 through central H Exch 36 from the heat of driving engine 12.In addition, the heat from the waste gas that leaves EGHR H Exch 18 is delivered to engine water loop 22 also Zhongdao change-speed boxs 14 from this EGHR H Exch 18.
Step 430: engine warm-up pattern
If method 200 confirms that driving engines 12 are in auto stop mode (not producing moment of torsion), and if the transmission oil temperature of monitoring be not less than and proofread and correct second temperature of transmission, method 200 is carried out the engine warm-up pattern that is used for EGHR system 10.Method 200 is in EGHR system 10 in the engine warm-up pattern, under the situation that can obtain any heat from the waste gas through EGHR H Exch 18, to increase the temperature of driving engine 12.During auto stop mode, if being higher than, change-speed box 14 proofreaies and correct second temperature of transmission, the extra heat in change-speed box 14 can be used as extra heat set (thermal mass) to postpone next engine starting incident.
Step 432: valve is set to engine location
Carrying out the engine warm-up pattern comprises control or sets two-way cock 26 to engine location.When the EGHR system is in the engine warm-up pattern, passed through EGHR H Exch 18 by 42 guiding of EGHR bypass disc from the amount of residual heat will of hot waste gas.Cooling system conditioner leaves driving engine 12, and through temperature booster core 30, and two-way cock 26 prevents that ANALYSIS OF COOLANT FLOW from passing through change-speed box water loop 24.Waste gas transmits heat to cooling system conditioner in engine water loop 22, and it returns with the driving engine 12 of heating.
With reference now to Fig. 5,, and continues wherein to show the indicative flowchart of heater program 500 with reference to figure 1-4.Heater program 500 is parts of method shown in Figure 2, and shown in Fig. 2 as the part of the piece that marks with label 500.Can be merely the part of heater program 500 in the step shown in the diagram of circuit of Fig. 5, thereby method 200 can be included in other steps in the heater program 500.Hot range of temperatures occurs on the mild temperature scope.
Step 510: is temperature of transmission less than proofreading and correct first temperature?
Step 512: change-speed box warm up mode
Be higher than correction thermal environment temperature if the transmission oil temperature of monitoring is lower than the ambient air temperature of proofreading and correct first temperature of transmission and monitoring, then method 200 will be controlled EGHR system 10 to the change-speed box warm up mode.As in another ambient air temperature (such as known in Fig. 3 and 4); When EGHR system 10 is in the change-speed box warm up mode, be delivered to transmission oil loop 28 and change-speed box 14 through central H Exch 36 from driving engine 12 or from EGHR H Exch 18 or from both heat.
Step 514: valve is set to gear box position
In the time of in being in the change-speed box warm up mode, method 200 comprises sets two-way cock 26 to gear box position.When two-way cock 26 was in gear box position, cooling system conditioner was through temperature booster core 30 and be conducted through change-speed box water loop 24 and central H Exch 36 then, advances to EGHR H Exch 18 then, and return engine 12.Be in any time of change-speed box warm up mode in EGHR system 10, two-way cock 26 will be set to gear box position.
During the change-speed box warm up mode, will be delivered to change-speed box 14 through central H Exch 36 from the heat of driving engine 12.In addition, will be delivered to engine water loop 22 with the temperature of rising driving engine 12 or be full of the heat that is delivered to change-speed box 14 from EGHR H Exch 18 from the heat of waste gas.If engine temperature significantly raises during the change-speed box warm up mode, EGHR bypass disc 42 will be closed (for example by the wax motor driven) to bypass position (among Fig. 1 shown in 43), and prevent to be delivered to engine water loop 22 from the heat of waste gas.
Step 516: temperature of transmission is non-cold
If being not less than, the transmission oil temperature of monitoring proofreaies and correct first temperature of transmission, then method 200 change-speed box 14 of need not heating.So method 200 can be confirmed driving engine 12 or change-speed box 14 and whether just stand thermal extremes.
Step 518: is engine temperature less than proofreading and correct extreme temperature?
Step 520: engine temperature is not extreme
If method 200 is confirmed the engine water temperature of monitoring and is lower than the extreme engine temperature of correction that then driving engine 12 is not standing extreme temperature.Yet, although maybe not need heat driving engine 12, so method 200 is set two-way cock 26 to engine location.
Step 522: valve is set to engine location
When two-way cock 26 was set to engine location, it is constant relatively that the temperature of driving engine 12 can raise or keep.Actuate the required temperature of EGHR bypass disc 42 if the coolant temperature in the engine water loop 22 is lower than, heat will be delivered to driving engine 12 from waste gas.Yet for example the wax motor-on the required level of bypass position (shown in 43 among Fig. 1), waste gas will be prevented from passing engine water loop 22 through actuating if temperature is closing EGHR bypass disc 42-.Be also noted that the high temperature in driving engine 12 can trigger the driving engine temperature controller to begin flowing with cooled engine through engine radiator 32.
Step 524: is temperature of transmission less than proofreading and correct extreme temperature?
Proofread and correct extreme engine temperature if the engine water temperature of monitoring is higher than, then driving engine 12 is standing extreme temperature.So method 200 is carried out to confirm whether the unnecessary heat in driving engine 12 can dissipate through change-speed box 14 and change-speed box radiator 34.Thus, method 200 comprises that the transmission oil temperature with monitoring compares with the extreme temperature of transmission of correction.
Proofreading and correct extreme temperature of transmission can be based on such temperature, if on this temperature, keep long period of time, then change-speed box 14 will damage.For example, but indefiniteness, proofread and correct extreme temperature of transmission and can be about 110 degrees centigrade.Notice that when the temperature of driving engine 12 was on the extreme engine temperature of correction, the driving engine temperature controller possibly allow to flow through engine radiator 32, and EGHR bypass disc 42 is in bypass position (being depicted as the dotted line 43 among Fig. 1).
Step 526: through the engine cooling of change-speed box
Proofread and correct extreme temperature of transmission if the transmission oil temperature of monitoring is lower than, the engine water temperature of monitoring is higher than the extreme engine temperature of correction simultaneously, then has the extra cooling power through change-speed box 14.Extra heat from driving engine 12 can be delivered to transmission oil loop 28 and change-speed box radiator 34 from driving engine 12.
Step 528: valve is set to gear box position
If the temperature build-up in transmission oil loop 28 is to actuating change-speed box temperature controller 44 on the required level in heat radiation position (shown in dotted line among Fig. 1 45).In case change-speed box temperature controller 44 allows to flow through change-speed box radiator 34, the surplus heat that transmits from driving engine 12 dissipates through change-speed box radiator 34.Through setting two-way cock 26 to gear box position, the configuration of this EGHR10 allows to dissipate through change-speed box 14 and change-speed box radiator 34 from the unnecessary heat of driving engine 12.
Thus, in some cases, the EGHR system can be placed in engine warm-up, engine cooling, change-speed box is heated or the change-speed box refrigerating mode.Vehicle passenger cabin also can be heated through temperature booster core 30.The operation of EGHR system 10 under various patterns be Be Controlled through the selection of two-way cock 26, and this selection is based on the temperature of ambient air, driving engine 12 or the change-speed box 14 monitoring or confirm.
Step 530: do not have unnecessary cooling power
Proofread and correct extreme engine temperature if the engine water temperature of monitoring is higher than, and the transmission oil temperature of monitoring is higher than also and proofreaies and correct extreme temperature of transmission, then the extra cooling power through change-speed box 14 or change-speed box radiator 34.
Step 532: valve is set to engine location
So this method is set two-way cock 26 to engine location, make change-speed box radiator 34 not with driving engine 12 heat-exchange communication.Thus, EGHR system 10 is configured to only when change-speed box 14 temperature are lower than the extreme temperature of transmission of correction, just transmit heat to change-speed box 14.When driving engine 12 when change-speed box 14 boths are on their extreme temperature separately, engine radiator 32 is used to the heat that dissipates with change-speed box radiator 34.
Detailed specification sheets and accompanying drawing support and to have described the present invention be supportive and schematic, but scope of the present invention only receives the qualification of claim.Describe in detail with other embodiment although be used to carry out optimal modes more of the present invention, exist to be used to implement various alternate design of the present invention defined in the appended claims and embodiment.
Statement about federal scientific research or development financing project
It is that the United States Government of PHEV DOE GMT311/166 supports to accomplish down that the present invention is based on protocol number that Department of Energy (DOE) authorizes.United States Government can have certain rights and interests in the present invention.
Claims (10)
1. a waste-gas heat that is used for operating vehicle reclaims the method for (EGHR) system, and this vehicle comprises driving engine, change-speed box and EGHR H Exch, and this method comprises:
The control two-way cock; Wherein two-way cock is configured to be set in engine location and the gear box position; Wherein this engine location allows the heat-exchange communication between EGHR H Exch and driving engine, and this gear box position allows the heat-exchange communication between EGHR H Exch, change-speed box and the driving engine;
The monitoring engine coolant-temperature gage;
The engine water temperature of monitoring is compared with correction first engine temperature; And
Proofread and correct first engine temperature if the engine water temperature that monitors is lower than this, set two-way cock to this engine location.
2. the method for claim 1 also comprises:
Monitoring transmission oil temperature;
The transmission oil temperature of monitoring is compared with correction first temperature of transmission; And
If the transmission oil temperature of monitoring is lower than the engine water temperature of proofreading and correct first temperature of transmission and monitoring and is lower than correction first engine temperature, set two-way cock to said gear box position.
3. method as claimed in claim 2 also comprises:
The monitoring environment air themperature;
The ambient air temperature of monitoring is compared with correction thermal environment temperature; And
Proofread and correct the thermal environment temperature if the ambient air temperature of monitoring is higher than, engine water temperature of monitoring and the extreme engine temperature of correction are compared; And
Proofread and correct extreme engine temperature if the engine water temperature that monitors is lower than, set two-way cock to said engine location.
4. method as claimed in claim 3, wherein said vehicle also comprises the change-speed box radiator, and this method also comprises:
Proofread and correct extreme engine temperature if the engine water temperature of monitoring is higher than, transmission oil temperature of monitoring and the extreme temperature of transmission of correction are compared; And
Proofread and correct extreme temperature of transmission if the transmission oil temperature of monitoring is lower than, set two-way cock, make change-speed box radiator and driving engine heat-exchange communication to said gear box position.
5. method as claimed in claim 4 also comprises:
Proofread and correct extreme engine temperature if the engine water temperature of monitoring is higher than, and the transmission oil temperature of monitoring is higher than and proofreaies and correct extreme temperature of transmission, set two-way cock to engine location, make the change-speed box radiator not with the driving engine heat-exchange communication.
6. method as claimed in claim 5 also comprises:
The ambient air temperature of monitoring is compared with one that calibrates in cold ambient temperature, calibration benign environment temperature and the calibration thermal environment temperature;
If the ambient air temperature of monitoring is lower than the correction cold ambient temperature, then the engine water temperature with monitoring compares with proofreading and correct second engine temperature, wherein proofreaies and correct second engine temperature greater than proofreading and correct first engine temperature; And
Proofread and correct second engine temperature if the engine water temperature that monitors is lower than, set two-way cock to said engine location.
7. method as claimed in claim 6 also comprises:
The monitoring auto stop mode, wherein auto stop mode takes place when driving engine does not produce positive moment of torsion;
If driving engine is in auto stop mode; And if the ambient air temperature of monitoring is lower than the correction cold ambient temperature; Then the transmission oil temperature with monitoring compares with proofreading and correct second temperature of transmission, wherein proofreaies and correct second temperature of transmission less than proofreading and correct first temperature of transmission; And
Proofread and correct second temperature of transmission if the transmission oil temperature that monitors is lower than, set two-way cock to said gear box position.
8. method as claimed in claim 7, wherein said correction thermal environment temperature is 17 degrees centigrade.
9. a waste-gas heat that is used for operating vehicle reclaims the method for (EGHR) system, and this vehicle comprises driving engine, change-speed box, change-speed box radiator and EGHR H Exch, and this method comprises:
The control two-way cock; Wherein this two-way cock is configured to be set in engine location and the gear box position; Wherein this engine location allows the heat-exchange communication between EGHR H Exch and driving engine, and this gear box position allows the heat-exchange communication between EGHR H Exch, change-speed box and the driving engine;
The monitoring engine coolant-temperature gage;
Monitoring transmission oil temperature;
The monitoring environment air themperature; And
The ambient air temperature of monitoring is compared with correction thermal environment temperature; And:
Proofread and correct the thermal environment temperature if the ambient air temperature of monitoring is higher than, engine water temperature of monitoring and the extreme engine temperature of correction are compared;
Proofread and correct extreme engine temperature if the engine water temperature that monitors is lower than, set two-way cock to engine location,
Proofread and correct extreme engine temperature if the engine water temperature of monitoring is higher than, transmission oil temperature of monitoring and the extreme temperature of transmission of correction are compared, and
Proofread and correct extreme temperature of transmission if the transmission oil temperature of monitoring is lower than, set two-way cock, make change-speed box radiator and driving engine heat-exchange communication to said gear box position.
10. method as claimed in claim 9 also comprises:
Proofread and correct extreme engine temperature if the engine water temperature of monitoring is higher than, and the transmission oil temperature of monitoring is higher than and proofreaies and correct extreme temperature of transmission, set two-way cock to said engine location, make the change-speed box radiator not with the driving engine heat-exchange communication.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/915,764 | 2010-10-29 | ||
| US12/915,764 US20120102952A1 (en) | 2010-10-29 | 2010-10-29 | Method for controlling exhaust gas heat recovery systems in vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102529689A true CN102529689A (en) | 2012-07-04 |
Family
ID=45935941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103366444A Pending CN102529689A (en) | 2010-10-29 | 2011-10-31 | Method for controlling exhaust gas heat recovery systems in vehicles |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20120102952A1 (en) |
| CN (1) | CN102529689A (en) |
| DE (1) | DE102011116923A1 (en) |
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| CN111022170A (en) * | 2018-10-10 | 2020-04-17 | 现代自动车株式会社 | Engine cooling system for vehicle |
| CN111075523A (en) * | 2018-10-22 | 2020-04-28 | 马勒国际有限公司 | Waste heat utilization device, in particular for an internal combustion engine of a motor vehicle |
| CN113446390A (en) * | 2021-07-22 | 2021-09-28 | 中国第一汽车股份有限公司 | Transmission oil coolant circulation system, control method, vehicle, and storage medium |
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| US8763376B2 (en) * | 2011-12-01 | 2014-07-01 | GM Global Technology Operations LLC | Exhaust gas heat recovery system and transmission warmer implementation strategy for a vehicle |
| CA2873462C (en) | 2012-05-31 | 2020-03-31 | Dana Canada Corporation | Heat exchanger assemblies with integrated valve |
| US9989322B2 (en) | 2013-03-01 | 2018-06-05 | Dana Canada Corporation | Heat recovery device with improved lightweight flow coupling chamber and insertable valve |
| WO2014138991A1 (en) * | 2013-03-15 | 2014-09-18 | Dana Canada Corporation | Valve system configurations for warming and cooling transmission fluid |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20120102952A1 (en) | 2012-05-03 |
| DE102011116923A1 (en) | 2012-05-03 |
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Application publication date: 20120704 |