CN102808679A - Heat management method and system of engine - Google Patents
Heat management method and system of engine Download PDFInfo
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- CN102808679A CN102808679A CN2011101430588A CN201110143058A CN102808679A CN 102808679 A CN102808679 A CN 102808679A CN 2011101430588 A CN2011101430588 A CN 2011101430588A CN 201110143058 A CN201110143058 A CN 201110143058A CN 102808679 A CN102808679 A CN 102808679A
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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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Abstract
The invention discloses a heat management method of an engine, and a heat management system of the engine. The system comprises a heat exchange device, a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are connected to the heat exchange device; a first control valve for controlling flow of fluid in the first pipeline is arranged in the first pipeline. The method comprises the following steps: providing the heat management system of the engine; transferring inlet gas or cooled water of the engine through the second pipeline; transferring outlet gas of the engine through the first pipeline; exchanging heat of inlet gas or cooled water of the engine and outlet gas of the engine in the heat exchange device; and controlling flow of outlet gas flowing through the heat exchange device by the first control valve. Thus, heat energy of outlet gas of the engine can be recycled effectively to increase service efficiency of energy of the engine; and the heat exchange device also can be protected effectively.
Description
Technical field
The present invention relates to the engine thermal administrative skill, relate in particular to a kind of engine thermal management method and system.
Background technique
The engine thermal management system is from the system intergration and whole angle, plans as a whole the relation between heat and the motor, adopts the system of comprehensive means control and optimization heat transfer.The quality of engine thermal management system service behaviour directly affects the overall performance of automobile dynamic system.The engine thermal administrative skill is classified as one of key technology of U.S.'s 21 century commercial car plan, has a high potential to improving vehicle performance.The control target of high performance engine thermal management system is to save fuel oil, reduction discharging, the output of increase power and vehicle bearing capacity, the vehicle maintenance expense that reduces, raising reliability and the vehicle adaptive capacity to environment.
Our times mainly concentrates on ways and meanses such as using electronic and intelligentized type control, change engine components structure, use new material for the research of engine thermal administrative skill; For example: 1992; Valeo Engine Cooling (VEC) company has developed a kind of engine-cooling system of being made up of electric control pump, electric-controlled thermostat and electric fan; Can control coolant temperature through the control coolant rate, can reach the oil-saving effect about 5%.For another example; Nineteen ninety-five, the Choi of U.S. Argonne National Laboratory etc. propose the nano-fluid notion, and Choi etc. add the Cu nanoparticle of 1% volume concentration in fluid; Fluid heat conductivity 40% can be improved, fluid heat conductivity 250% can be improved and add the 1%C nanotube.
Because the complexity of engine thermal management system, the research of engine thermal management system and utilization have all been carried out the change of more complicated to automobile script structure basically, even the research that has has been carried out significantly changing to the structure of automobile.Like (the T-VECTechnologies of U.S. T-VEC technology company; Inc.) be directed against the engine thermal management system that the increasing characteristics of automobile leading portion heat exchanger are developed brand-new layout; Heat exchanger by the air-cooled water-cooled that changes into, is moved on under the engine hood from the automobile leading portion, and the research and development difficulty is big; And reforming cost is expensive, and unsuitable large size is promoted.
At present the engine thermal administrative skill cooling water temperature that mainly is conceived to control motor is optimized the burning situation of motor, does not relate to the recovery and the utilization of exhaust energy in fact, and this makes still has very most energy loss.
The energy that fuel combustion discharged in the motor mainly is divided into three parts: one, be used to promote the consumption of piston crank mechanism; Two, the heat taken away of cooling water; Three, the heat taken away of engine exhaust.Wherein the 3rd ratio of being occupied is about 30%, therefore, in order to improve the energy utilization efficiency of motor, is necessary the heat of this part is recycled, and therefore just relates to the problem of engine thermal management.
Summary of the invention
Technical problem underlying to be solved by this invention provides a kind of engine thermal management method, and it can effectively solve the engine thermal problem of management.
Another technical problem to be solved by this invention provides a kind of engine thermal management system, and it can effectively solve the engine thermal problem of management.
For solving the problems of the technologies described above, one side of the present invention provides the engine thermal management method, and it comprises:
The engine thermal management system is provided, and first pipeline and second pipeline that said engine thermal management system comprises heat-exchanger rig and is connected to said heat-exchanger rig are provided with in said first pipeline and control wherein first control valve of fluid flow;
Transmit the air inlet or the cooling water of motor through said second pipeline;
Transmit the exhaust of motor through said first pipeline;
Heat exchange is carried out in the exhaust of the air inlet of said motor or cooling water and said motor in said heat-exchanger rig;
Transmit flow through said first control valve control through the exhaust of said heat-exchanger rig.
In one embodiment; Said motor is a homogeneity compression-ignition engine; The operating mode of its work comprises the compression ignite operating mode and lights operating mode; Said method comprise when said engine operation when lighting operating mode, control said first control valve and close in fact fully with the blast air that cuts off said motor in fact path to said heat-exchanger rig.
Preferably; Said method also comprises; In said engine thermal management system, second control valve is provided; The exhaust of controlling in said first pipeline through said second control valve optionally is connected with atmosphere, when said engine operation during in the compression ignite operating mode, closes or partially open said second control valve fully; When said engine operation when lighting operating mode, do not close said second control valve, be connected with atmosphere to keep the exhaust in said first pipeline.
Preferably, said first control valve and said second control valve all have controlled aperture, and said method also comprises through the aperture of said first control valve of Collaborative Control and said second control valve regulates the air displacement that gets in the said heat-exchanger rig.
Preferably, said method also comprises the aperture of controlling said first control valve and said second control valve according to the temperature of the exhaust that discharges in said first pipeline.
Another aspect of the present invention provides the engine thermal management system; First pipeline and second pipeline that it comprises homogeneity compression-ignition engine, heat-exchanger rig and is connected to said heat-exchanger rig; Said first pipeline is connected to motor to receive and to transmit the exhaust of motor; Said second pipeline is connected to motor to transmit the air inlet or the cooling water of motor; Flowing medium thermo-contact in said heat-exchanger rig in said first pipeline and said second pipeline; The operating mode of said homogeneity compression-ignition engine work comprises the compression ignite operating mode and lights operating mode; Be provided with control in said first pipeline and flow to first control valve of the extraction flow of said heat-exchanger rig from motor, when said homogeneity compression-ignition engine is operated in when lighting operating mode, said first control valve is closed with the blast air that the cuts off said homogeneity compression-ignition engine in fact path to said heat-exchanger rig in fact fully.
Preferably; Said system also comprises second control valve; Exhaust in said first pipeline optionally is connected with atmosphere through said second control valve, and when said homogeneity compression-ignition engine was operated in the compression ignite operating mode, said second control valve was closed fully or partially opened; When said homogeneity compression-ignition engine is operated in when lighting operating mode, said second control valve is not closed, and is connected with atmosphere to keep the exhaust in said first pipeline.
Preferably, when said homogeneity compression-ignition engine was operated in the compression ignite operating mode, said first control valve was opened fully or is partially opened.
In one embodiment, said first pipeline comprises the tail pipe road, and said tail pipe road is connected the upper reaches of said first control valve of said first pipeline.
Preferably, said second control valve is arranged in the said tail pipe road.
The present invention is provided with first control valve, transmits the flow through the exhaust of heat-exchanger rig through the control of first control valve, can effectively solve the engine thermal problem of management; Can either recycle engine exhaust heat energy effectively, improve the energy utilization efficiency of motor, can effectively protect heat-exchanger rig again; And; Use apparatus structure of the present invention simple, cost is lower, has better market prospect and effects of energy saving and emission reduction preferably.
Below through specify preferred embodiment with reference to accompanying drawing, disclose other aspects and features of the present invention more significantly.But should be known in this accompanying drawing only for task of explanation designs, not as the qualification of scope of the present invention, because the qualification of scope should be with reference to additional claim.Should also be appreciated that unless otherwise indicated, accompanying drawing only tries hard to explain conceptually structure described herein and flow process, unnecessary scale.
Description of drawings
Through following accompanying drawing and more detailed instance explanation, the present invention will obtain more comprehensively understanding.
Fig. 1 is that engine thermal management system according to one embodiment of the present invention is at the structural representation of lighting under the operating mode.
Fig. 2 is the structural representation of engine thermal management system under the compression ignite operating mode according to one embodiment of the present invention.
Fig. 3 regulates the structural representation that gets into the air displacement in the heat-exchanger rig according to the engine thermal management system of one embodiment of the present invention through the aperture of controlling first control valve and second control valve.
Embodiment
For make above-mentioned purpose, feature and advantage can be more obviously understandable, does detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Extremely shown in Figure 3 like Fig. 1, first pipeline 21 and second pipeline 22 that engine thermal management system 100 of the present invention comprises heat-exchanger rig 1 and is connected to heat-exchanger rig 1.First pipeline 21 is connected to motor (not shown) to receive and to transmit the exhaust of motor; Second pipeline 22 is connected to motor to transmit the air inlet or the cooling water of motor; Wherein, Flowing medium thermo-contact in heat-exchanger rig 1 in first pipeline 21 and second pipeline 22, that is, air inlet in the exhaust in first pipeline 21 and second pipeline 22 or cooling water can carry out heat exchange in heat-exchanger rig 1.In first pipeline 21, being provided with control flows to first control valve 31 of the extraction flow of heat-exchanger rig 1 from motor.
Wherein, first control valve 31 is arranged on the upper reaches of heat-exchanger rig 1.
The effect of the heat-exchanger rig 1 among the present invention is to be used for the storage of heat and exchange, and it includes but are not limited to various heat exchanger, in other heat transmission equipments with heat storage and release function are also contained in.
Engine thermal management system 100 of the present invention is provided with first control valve 31; Transmit flow through 31 controls of first control valve through the exhaust of heat-exchanger rig 1; Effectively solve the engine thermal problem of management; Can either recycle engine exhaust heat energy effectively, improve the energy utilization efficiency of motor, can effectively protect heat-exchanger rig 1 again.And engine thermal management system 100 of the present invention only needs change seldom on legacy system, and simple in structure, implementation cost is lower, has better market prospect and effects of energy saving and emission reduction preferably.
In one embodiment of the invention, motor is a homogeneity compression-ignition engine, and the engine thermal management system 100 that one embodiment of the present invention proposes is based on a kind of heat management system of homogeneity compression-ignition engine.The operating mode of homogeneity compression-ignition engine work comprises the compression ignite operating mode and lights operating mode.When homogeneity compression-ignition engine was operated in the compression ignite operating mode, the engine exhaust temperature that discharges through first pipeline 21 was lower.When homogeneity compression-ignition engine is operated in when lighting operating mode, the engine exhaust temperature that discharges through first pipeline 21 will reach nearly 1000 ℃ high temperature.
One of characteristics of homogeneity compression-ignition engine are exactly to need higher intake temperature; Therefore need heat air inlet, and the narrow limitation of present applied heat-exchanger rig 1 is to bear too high temperature, therefore; In first pipeline 21 of the present invention, set up first control valve 31; Flow to the flow of the exhaust of heat-exchanger rig 1 thereby control, when the exhaust of motor is recycled, can effectively protect heat-exchanger rig 1 from motor.First control valve 31 has the controllable aperture that can close in fact fully.
Fig. 1 is that engine thermal management system 100 according to one embodiment of the present invention is at the structural representation of lighting under the operating mode.As shown in Figure 1, when engine operation when lighting operating mode, the excessive discharge temperature in first pipeline 21; In this case, in order to protect the heat-exchanger rig 1 in the engine thermal management system 100, at this moment; First control valve 31 is closed with the blast air that the cuts off motor in fact path to heat-exchanger rig 1 in fact fully, therefore, and through control to first control valve 31; Can be so that when the delivery temperature of motor be high; Exhaust in first pipeline 21 can directly be discharged in the atmosphere under the situation that first control valve 31 is closed fully, and does not have an effect with other devices, therefore; Can avoid too high engine exhaust to get in the heat-exchanger rig 1 and burn out heat-exchanger rig 1, can play effective protection of heat exchanging device 1.A kind of preferred embodiment in; Engine thermal management system 100 of the present invention can also comprise that second control valve, 32, the first pipelines, the 21 interior exhausts of the flow that is discharged to atmosphere in control first pipeline 21 can optionally be connected with atmosphere through second control valve 32.Second control valve 32 can be arranged in the tail pipe road 210 of first pipeline 21.When engine operation as shown in Figure 1 when lighting operating mode, second control valve 32 is not closed, thereby, can keep the exhausts in first pipeline 21 to be connected, and not have an effect with other devices with atmosphere.
Fig. 2 is the structural representation of engine thermal management system 100 under the compression ignite operating mode according to one embodiment of the present invention.As shown in Figure 2; When engine operation during in the compression ignite operating mode, the delivery temperature in first pipeline 21 is lower, can satisfy the demand of heat-exchanger rig 1; In this case; Can utilize the exhaust heat exchanging device 1 in first pipeline 21 to heat, at this moment, open or partially open first control valve 31 fully.When engine operation during in the compression ignite operating mode, second control valve 32 can close or partially open fully.In order farthest to utilize the heat heat exchanging device 1 in the exhaust to heat, at this moment, need open first control valve 31 fully and close simultaneously second control valve 32 fully.When hanging down for delivery temperature; First control valve 31 is opened and second control valve 32 is closed; Exhaust in first pipeline 21 can get in the heat-exchanger rig 1; Thereby can carry out being drained in the atmosphere after the heat exchange with engine charge or cooling water, engine charge or cooling water after the heating then continue in the motor whole system, to work.
For homogeneity compression-ignition engine; Owing to there is the conversion of operating mode pattern; There is bigger fluctuation in its delivery temperature, when delivery temperature is low, can carry out heat exchange through heat-exchanger rig 1, when delivery temperature higher; Then can be through controlling first control valve 31 and second control valve 32 stops engine exhaust to enter into heat-exchanger rig 1, with protection heat-exchanger rig 1.
The temperature that the engine thermal management system 100 that the present invention proposes can be regulated the engine charge or the cooling water of required acquisition effectively.When participate in heat exchange be engine charge the time; The adjusting of its intake temperature can realize through the aperture of regulating first control valve 31 and second control valve 32; To help realizing the combustion mode of motor homogeneous compression-ignition like this, and the combustion manner of homogeneous compression-ignition will be than traditional combustion manner fuel-economizing about 20%; And when participate in heat exchange be engine cooling water the time, will apace cooling water be heated, will help the cold start-up of motor like this, optimize the discharging of this operating mode.
Below engine thermal management method of the present invention is elaborated.
The engine thermal management method of one embodiment of the present invention comprises:
Aforesaid engine thermal management system 100 is provided; Wherein, Engine thermal management system 100 comprises heat-exchanger rig 1 and is connected to be provided with in first pipeline 21 and second pipeline, 22, the first pipelines 21 of heat-exchanger rig 1 controls wherein first control valve 31 of fluid flow;
Transmit the air inlet or the cooling water of motor through second pipeline 22;
Exhaust through first pipeline, 21 transmission motors;
Heat exchange is carried out in the exhaust of the air inlet of motor or cooling water and motor in heat-exchanger rig 1;
Transmit flow through 31 controls of first control valve through the exhaust of heat-exchanger rig 1.
Engine thermal management method of the present invention is through rationally controlling first control valve 31 in the engine thermal management system 100 of the present invention; And then control the flow that transmits through the exhaust of heat-exchanger rig 1, thereby, engine thermal management system 100 of the present invention is carried out the available heat management; Can either recycle engine exhaust heat energy effectively; Improve the energy utilization efficiency of motor, can effectively protect heat-exchanger rig 1 again, have effects of energy saving and emission reduction preferably.
At a kind of mode of execution; Motor of the present invention is a homogeneity compression-ignition engine; The operating mode of homogeneity compression-ignition engine work comprises the compression ignite operating mode and lights switch operating between the operating mode; Engine thermal management method of the present invention also comprise when engine operation when lighting operating mode, control first control valve 31 and close in fact fully with the blast air that cuts off motor in fact path to heat-exchanger rig 1.
Wherein, first control valve 31 and second control valve 32 all have controlled aperture, and engine thermal management method of the present invention further comprises through the aperture of Collaborative Control first control valve 31 and second control valve 32 regulates the air displacement that gets in the heat-exchanger rig 1.
In addition, engine thermal management method of the present invention also comprises the aperture of controlling first control valve 31 and second control valve 32 according to the temperature of the exhaust that discharges in first pipeline 21, thereby control enters into the air displacement of heat-exchanger rig 1.
According to accompanying drawing and detailed description, Applicable scope of the present invention shows clearly.Above mode of execution only is used to explain the present invention; And be not limitation of the present invention; The those of ordinary skill in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also be made various variations and modification; Therefore all technological schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. engine thermal management method, it comprises:
The engine thermal management system is provided, and first pipeline and second pipeline that said engine thermal management system comprises heat-exchanger rig and is connected to said heat-exchanger rig are provided with in said first pipeline and control wherein first control valve of fluid flow;
Transmit the air inlet or the cooling water of motor through said second pipeline;
Transmit the exhaust of motor through said first pipeline;
Heat exchange is carried out in the exhaust of the air inlet of said motor or cooling water and said motor in said heat-exchanger rig;
Transmit flow through said first control valve control through the exhaust of said heat-exchanger rig.
2. the method for claim 1; Wherein, Said motor is a homogeneity compression-ignition engine; The operating mode of its work comprises the compression ignite operating mode and lights operating mode, said method comprise when said engine operation when lighting operating mode, control said first control valve and close in fact fully with the blast air that cuts off said motor in fact path to said heat-exchanger rig.
3. method as claimed in claim 2; It also comprises; In said engine thermal management system, second control valve is provided; The exhaust of controlling in said first pipeline through said second control valve optionally is connected with atmosphere, when said engine operation during in the compression ignite operating mode, closes or partially open said second control valve fully; When said engine operation when lighting operating mode, do not close said second control valve, be connected with atmosphere to keep the exhaust in said first pipeline.
4. method as claimed in claim 3; Wherein, Said first control valve and said second control valve all have controlled aperture, and said method also comprises through the aperture of said first control valve of Collaborative Control and said second control valve regulates the air displacement that gets in the said heat-exchanger rig.
5. method as claimed in claim 4, it also comprises the aperture of controlling said first control valve and said second control valve according to the temperature of the exhaust that discharges in said first pipeline.
6. engine thermal management system; It is characterized in that: first pipeline and second pipeline that it comprises homogeneity compression-ignition engine, heat-exchanger rig and is connected to said heat-exchanger rig; Said first pipeline is connected to motor to receive and to transmit the exhaust of motor; Said second pipeline is connected to motor to transmit the air inlet or the cooling water of motor; Flowing medium thermo-contact in said heat-exchanger rig in said first pipeline and said second pipeline; The operating mode of said homogeneity compression-ignition engine work comprises the compression ignite operating mode and lights operating mode; Be provided with control in said first pipeline and flow to first control valve of the extraction flow of said heat-exchanger rig from motor, when said homogeneity compression-ignition engine is operated in when lighting operating mode, said first control valve is closed with the blast air that the cuts off said homogeneity compression-ignition engine in fact path to said heat-exchanger rig in fact fully.
7. system as claimed in claim 6; It also comprises second control valve; Exhaust in said first pipeline optionally is connected with atmosphere through said second control valve, and when said homogeneity compression-ignition engine was operated in the compression ignite operating mode, said second control valve was closed fully or partially opened; When said homogeneity compression-ignition engine is operated in when lighting operating mode, said second control valve is not closed, and is connected with atmosphere to keep the exhaust in said first pipeline.
8. system as claimed in claim 7, wherein, when said homogeneity compression-ignition engine was operated in the compression ignite operating mode, said first control valve was opened fully or is partially opened.
9. system as claimed in claim 7, wherein, said first pipeline comprises the tail pipe road, said tail pipe road is connected the upper reaches of said first control valve of said first pipeline.
10. system as claimed in claim 9, wherein, said second control valve is arranged in the said tail pipe road.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101430588A CN102808679A (en) | 2011-05-30 | 2011-05-30 | Heat management method and system of engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101430588A CN102808679A (en) | 2011-05-30 | 2011-05-30 | Heat management method and system of engine |
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| CN102808679A true CN102808679A (en) | 2012-12-05 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104632499A (en) * | 2014-12-23 | 2015-05-20 | 潍柴动力股份有限公司 | Hybrid power vehicle heat controlling method and system |
| CN105332844A (en) * | 2015-11-09 | 2016-02-17 | 长安大学 | Device utilizing waste gas waste heat for preheating inlet gas of engine |
| CN108482068A (en) * | 2018-03-23 | 2018-09-04 | 重庆长安汽车股份有限公司 | A kind of the foot's heating system and control method of passenger |
| CN111022236A (en) * | 2019-12-26 | 2020-04-17 | 宁波吉利罗佑发动机零部件有限公司 | Engine thermal management system and vehicle |
| CN111577503A (en) * | 2020-04-24 | 2020-08-25 | 中国第一汽车股份有限公司 | Temperature control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108482068A (en) * | 2018-03-23 | 2018-09-04 | 重庆长安汽车股份有限公司 | A kind of the foot's heating system and control method of passenger |
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| CN111577503A (en) * | 2020-04-24 | 2020-08-25 | 中国第一汽车股份有限公司 | Temperature control device |
| CN111577503B (en) * | 2020-04-24 | 2022-04-01 | 中国第一汽车股份有限公司 | Temperature control device |
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Application publication date: 20121205 |