CN103261616B - Engine cooling apparatus - Google Patents
Engine cooling apparatus Download PDFInfo
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- CN103261616B CN103261616B CN201080070660.7A CN201080070660A CN103261616B CN 103261616 B CN103261616 B CN 103261616B CN 201080070660 A CN201080070660 A CN 201080070660A CN 103261616 B CN103261616 B CN 103261616B
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- cooling
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- 238000001816 cooling Methods 0.000 title claims abstract description 86
- 230000004087 circulation Effects 0.000 claims abstract description 65
- 239000002826 coolant Substances 0.000 claims description 63
- 230000033228 biological regulation Effects 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000009413 insulation Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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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
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
-
- 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
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
- F01P3/16—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
-
- 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
- F01P3/00—Liquid cooling
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/028—Cooling cylinders and cylinder heads in series
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Provided is a cooling apparatus (1A) comprising an engine (50), which is equipped with a cylinder block (51) and a cylinder head (52) provided with a water jacket (501) and a water jacket (502). The first water jacket (501) circulates cooing water in the exhaust-side portion of the cylinder block (51), and circulates cooling water in the exhaust-side portion of the cylinder head (52), including a prescribed region around the spark plugs (54). The second water jacket (502) is incorporated in a second circulation path (C2) that differs from the first circulation path (C1) in which the first water jacket (501) is incorporated. The second water jacket (502) circulates cooling water in the intake-side portion of the cylinder block (51), and circulates cooling water in the intake-side portion of the cylinder head (52).
Description
Technical field
The present invention relates to the cooling unit of motor.
Background technique
Within the engine, general cooling water cools.Further, the heat load of cylinder head can uprise this point within the engine is also known.Patent Document 1 discloses a kind of cooling unit of multiple cylinder engine, while the cooling performance of cylinder head can be improved, prevent the supercooling of cylinder block.Patent Document 2 discloses a kind of cooling unit of internal-combustion engine, the wall of its exhaust side of cooling combustion room energetically, thus the cooling effectiveness improving internal-combustion engine.
Patent document 1: Japanese Unexamined Patent Publication 08-177483 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2009-216029 publication
Summary of the invention
Figure 10 is the figure of the thermally equilibrated concrete condition representing motor.In Fig. 10, the general thermally equilibrated detailed content of spark-ignited internal combustion engine is represented respectively for the situation of full-power situation and sub load.In spark-ignited internal combustion engine, meeting more generation exhaust loss or cooling loss etc. be not for the warm of Effective power.Further, account for the minimizing of the cooling loss of the larger proportion of energy loss entirety, be very important key element for the raising thermal efficiency (fuel economy).But reducing cooling loss, effectively utilizing hot this point is not be easy to, this point can become the obstacle improving the thermal efficiency.
As being difficult to the reason reducing cooling loss, the structure that can list such as general motor can not make the state variable of heat trnasfer partly.That is, in general motor, from a structural point, be difficult to need the position carrying out cooling only to cool with required degree.Specifically, when making the state variable of heat trnasfer of motor, the general mechanical water pump by being driven by the output of motor, changes the flow of cooling water according to engine speed.But, regulate in the water pump of the flow of cooling water in integrity, even if when the variable water pump making flow variable, also the transmit mode of heat cannot be made partly variable according to engine operating status.
Figure 11 represents the inner wall temperature of cylinder and hot transmittance.Represent with the situation that improve thermal insulation for the situation of common structure respectively in fig. 11.As the situation of common structure, represent the situation of the general motor in the cooling water circulation path being provided with single system cooling water being circulated in the mode overcoming gravity from cylinder block bottom to cylinder head.Further, as the situation that improve thermal insulation, represent that the wall thickness of cylinder increases and carried out the situation that material changes and the situation of having carried out the higher air heat insulation of thermal insulation respectively.
At this, in order to reduce cooling loss, such as, also can consider the thermal insulation improving motor.And the reduction of significantly cooling loss in this case, can be expected as shown in figure 11.But in this case, owing to improving the thermal insulation of motor, the inner wall temperature of firing chamber rises simultaneously.In addition in the case, the temperature being accompanied by this mixed gas rises, thus can cause pinking.
The present invention, in view of above problem, its object is to the cooling unit providing a kind of motor, can realize the minimizing of cooling loss simultaneously and avoid pinking performance.
The present invention is a kind of cooling unit of motor, possess cylinder block and the cylinder head of the motor being provided with the first cooling medium path and the second cooling medium path that cooling medium is circulated, above-mentioned first cooling medium path make part from above-mentioned cooling medium to the exhaust side in above-mentioned cylinder block circulation after, the part circulation of the exhaust side in the regulation region of the spark plug periphery of above-mentioned cylinder head is arranged at again to comprising in above-mentioned cylinder head, above-mentioned second cooling medium path by group enter from above-mentioned first cooling medium path the different cooling medium circulating path of the cooling medium circulating path that enters of group, make part from above-mentioned cooling medium to the air inlet side in above-mentioned cylinder block circulation after, part again to the air inlet side in above-mentioned cylinder head circulates.
In addition, structure of the present invention preferably also possesses cooling medium control unit, when making when making above-mentioned cooling medium circulate to above-mentioned motor above-mentioned cooling medium to above-mentioned first cooling medium path circulation and make above-mentioned cooling medium to above-mentioned second cooling medium path circulation, flow to the above-mentioned cooling medium of above-mentioned second cooling medium path circulation when the load that this cooling medium control unit makes to compare above-mentioned motor when the load of above-mentioned motor is low middle load to the flow of above-mentioned cooling medium of above-mentioned second cooling medium path circulation is high load reduces.
In addition, the preferred above-mentioned motor of structure of the present invention is the motor being exhausted backflow, the cooling unit of above-mentioned motor also possesses: cooler, can be cooled by the heat exchange between the above-mentioned cooling medium of circulation to the exhaust being back to above-mentioned motor; And first branch, make the above-mentioned cooling medium shunting in above-mentioned first cooling medium path circulation and circulate to above-mentioned cooler.
In addition, structure of the present invention preferably also possesses: heater, can add hot air by the heat exchange between the above-mentioned cooling medium of circulation; And second branch, make the above-mentioned cooling medium shunting in above-mentioned first cooling medium path circulation and circulate to above-mentioned heater.
Invention effect
According to the present invention, the minimizing of cooling loss can be realized simultaneously and avoid pinking performance.
Accompanying drawing explanation
Fig. 1 is the Sketch figure of the cooling unit of the motor of embodiment 1.
Fig. 2 is the figure representing water jacket.
Fig. 3 is the figure of the cooled region representing water jacket.
Fig. 4 is the enlarged view of the cooled region of water jacket.
Fig. 5 is the Sketch figure of ECU.
Fig. 6 is the figure of the action representing ECU with flow chart.
Fig. 7 is the figure representing pyroconductivity corresponding to the firing chamber of crankshaft angles and surface area.
Fig. 8 is the Sketch figure of the cooling unit of the motor of embodiment 2.
Fig. 9 is the Sketch figure of the cooling unit of the motor of embodiment 3.
Figure 10 is the figure of the thermally equilibrated detailed content representing motor.
Figure 11 represents the inner wall temperature of cylinder and the figure of hot transmittance.
Embodiment
Accompanying drawing is utilized to be described embodiments of the invention.
Embodiment 1
Fig. 1 is the Sketch figure of cooling unit (hereinafter referred to as the cooling unit) 1A of motor.Cooling unit 1A is equipped on not shown vehicle.Cooling unit 1A possesses water pump (hereinafter referred to as W/P) 11, radiator 12, thermostat 13, flow control valve 14 and motor 50.
W/P11 is cooling medium pump unit, and force feed is as the cooling water of cooling medium.Specifically, W/P11 is the variable W/P making the flow of the cooling water of force feed variable.W/P11 utilizes the output of motor 50 to carry out the mechanical type W/P driven.The cooling water of W/P11 institute force feed is provided to motor 50.Motor 50 is provided with the first water jacket (hereinafter referred to as W/J) 501 and the 2nd W/J502.Specifically, the cooling water of W/P11 institute force feed is provided to W/J501,502.
Fig. 2 be represent W/J501,502 figure.Fig. 3 be represent W/J501,502 the figure of cooled region R1, R2.Fig. 4 is the enlarged view of cooled region R1, R2.Fig. 2 represents W/J501,502 with the stereogram of motor 50.Fig. 3 represents cooled region R1, R2 with the plan view of motor 50.Cooled region R1, R2 of each cylinder of the motor 50 in cooled region R1, the R2 shown in Fig. 3 are amplified expression by Fig. 4.Cooled region R1 represents the cooled region of the W/J501 in cylinder head 52, and cooled region R2 represents the cooled region of the 2nd W/J502 in cylinder head 52.
Motor 50 has cylinder block 51, cylinder head 52, packing ring 53, spark plug 54.Cylinder 51a is formed in cylinder block 51.In cylinder block 51, be provided with cylinder head 52 via packing ring 53.Packing ring 53 has high thermal insulation.In cylinder head 52, be provided with spark plug 54 corresponding to each cylinder 51a.Cylinder block 51 forms firing chamber with cylinder head 52 together with not shown piston.
One W/J501 makes cooling water circulate to the part of the exhaust side in cylinder block 51, and makes cooling medium to the part circulation comprising the exhaust side in the regulation region of spark plug 54 periphery in cylinder head 52.Regulation region refers to, can cool the region of the part of spark plug 54 periphery in cylinder head 52.Therefore, in cylinder head 52, the part of spark plug 54 periphery is contained in cooled region R1.
2nd W/J502 makes cooling water circulate to the part of the air inlet side in cylinder block 51, and cooling water is circulated to the part of the air inlet side in cylinder head 52.
W/J501,502 possesses respectively makes cooling water flow into from cylinder block 51 and make the longitudinal flow structure that cooling water flows out from cylinder head 52.Further, using taking out the side of the output of motor 50 as rear side, cooling water being flowed into from the front side of motor 50, and cooling water is flowed out from rear side.
As shown in Figure 1, in cooling unit 1A, multiple cooling water circulation path is formed with.As cooling water circulation path, such as, be circulating path i.e. the first circulating path C1 that a W/J501 institute group enters.The cooling water circulated at the first circulating path C1, after being discharged from W/P11, in a W/J501 circulation, and then returns W/P11 via thermostat 13 or via radiator 12 and thermostat 13.
Radiator 12 is heat exchangers, cools cooling water by carrying out heat exchange between the cooling water and air of circulation.Thermostat 13 switches the communication path be communicated with from inlet side to W/P11.Specifically, the circulation path walking around radiator 12, when coolant water temperature is lower than specified value, is placed in connected state by thermostat 13, when coolant water temperature is more than specified value, the circulation path circulated at radiator 12 is placed in connected state.
In addition, as cooling water circulation path, such as, there is circulating path i.e. the second circulating path C2 that the 2nd W/J502 institute group enters.After the cooling water of the second circulating path C2 circulation is discharged from W/P11, circulates at flow control valve 14, and then return W/P11 via thermostat 13 or via radiator 12 and thermostat 13.
After flow control valve 14 is arranged on circulating path C1, C2 branch in the second circulating path C2 and compare motor 50 part by upstream side.Flow control valve 14 is as the cooling capacity regulation unit that can adjust the cooling capacity of the 2nd W/J502 by regulating the flow at the cooling water of the 2nd W/J502 circulation.
In addition, flow control valve 14 is the cooling capacity regulation units not suppressing the cooling capacity of a W/J501 and can suppress the cooling capacity of the 2nd W/J502.Specifically, following cooling capacity regulation unit: the W/J501 such as when cooling water all rotates high load to the height of W/J501,502 circulations and the cooling capacity of the 2nd W/J502 are deposited in case, for their cooling capacity, the cooling capacity of a W/J501 can not be suppressed, but the cooling capacity of the 2nd W/J502 can be suppressed.
And then, flow control valve 14 is following cooling capacity regulation units: when to suppress the flow of the mode of the cooling capacity of the 2nd W/J502 to the cooling water in the 2nd W/J502 circulation to regulate, can regulate with the flow of mode to the cooling water in a W/J501 circulation improving the cooling capacity of a W/J501.
In cooling unit 1A, first circulating path C1 circulate cooling water by W/P11 force feed after, in during circulation is till one week not the 2nd W/J502 circulation.In addition, second circulating path C2 circulate cooling water by W/P11 force feed after, in during circulation is till one week not the one W/J501 circulation.That is, in cooling unit 1A, a W/J501 and the 2nd W/J502 is entered mutually different cooling medium circulating path by group.One W/J501 is equivalent to the first cooling medium path, and the 2nd W/J502 is equivalent to the second cooling medium path.
Fig. 5 is the Sketch figure of ECU70.Cooling unit 1A also possesses the ECU70 as electric control device.The microcomputer that ECU70 possesses imput output circuit 75,76 and is made up of CPU71, ROM72, RAM73 etc.These structures connect via bus 74 each other.
ECU70 is electrically connected with the crankshaft angle sensor 81 of the rotating speed for detecting motor 50, for measure suck air quantity Air flow meter 82, for detecting the accelerator open degree sensor 83 of accelerator open degree, detecting various sensor and the Switch such as cooling-water temperature sensor 84 of the temperature of cooling water.About this point, the load of motor 50 can be detected by ECU70 based on the output of Air flow meter 82, accelerator open degree sensor 83.ECU70 is electrically connected with the various control object such as W/P11 or flow control valve 14.
ROM72 is the structure of program or mapping (enum) data etc. for storing the various process described performed by CPU71.CPU71, based on the program being stored in ROM72, utilizes the temporary storage area of RAM73 to perform process as required, thus functionally realize various control unit, identifying unit, detection unit, computing unit etc. in ECU70.
Such as, in ECU70, functionally realize the control unit of control W/P11 and flow control valve 14.Control unit, when making cooling water circulate to motor 50, carries out the control driving W/P11.And thus, when making cooling water circulate to motor 50, cooling water is circulated to W/J501.Cooling water is made to be such as in engine operation process to the situation that motor 50 circulates.Make cooling water to the situation that have passed through the stipulated time after the situation that motor 50 circulates also can be such as engine cold-start.
In addition, when making cooling water when making cooling water circulate to motor 50 to the 2nd W/J502 circulation, the load that the aperture that it is the situation down-off modulating valve 14 of low middle load that control unit carries out making at the load of motor 50 compares motor 50 is the control that the aperture of the situation down-off modulating valve 14 of high load reduces.And the flow to the cooling water of the 2nd W/J502 circulation when the load thus, making to compare motor 50 when the load of motor 50 is low middle load to the flow of cooling water of the 2nd W/J502 circulation is high load reduces.
When the load of motor 50 is high load, it is standard-sized sheet that control unit can make flow control valve 14 such as.Further, when the load of motor 50 is low middle load, can make flow control valve 14 is such as full cut-off, or so that the mode that cooling water seethes with excitement can be suppressed to make flow control valve 14 valve opening.When carrying out the control driving W/P11, control unit can be higher with the rotating speed of such as motor 50, and the mode that discharge capacity is more controls.In cooling unit 1A, W/P11, flow control valve 14 and ECU70 are equivalent to cooling medium control unit.
Then utilize the flow chart shown in Fig. 6 that the action of ECU70 is described.ECU70 judges whether to be in (step S1) in engine operation process.W/P11 is then made to stop (step S7) if it is determined that result is negative.Then interim process ends.On the other hand, if it is determined that result is affirmative, ECU70 drives W/P11(step S2).Thus, when making cooling water circulate to motor 50, cooling water is all the time to a W/J501 circulation.
Then, ECU70 detects the load (step S3) of motor 50.Further, the load that detects is judged whether as high load (step S4).If it is determined that result is affirmative, then ECU70 makes flow control valve 14 valve opening (step S5).If it is determined that result is negative, then ECU70 is to make flow control valve 14 valve opening than aperture little during high load, comprises and makes flow control valve 14 valve closing (step S6).Thus, when the load of motor 50 is low middle load, the load comparing motor is the situation of high load, and the flow to the cooling water of the 2nd W/J502 circulation reduces.
The action effect of cooling unit 1A is then described.Fig. 7 is the figure representing pyroconductivity corresponding to the firing chamber of crankshaft angles and surface area.As shown in Figure 7, can understand that pyroconductivity improves near compression stroke top dead center.Further, about surface area, can understand, near compression stroke top dead center, the surface area of cylinder head 52 and piston becomes large.Therefore known, for cooling loss, the influence power of the temperature of cylinder head 52 is large.
On the other hand, can understand, compression end temperature is depended in pinking, and in the air inlet compression stroke had an impact to compression end temperature, the surface area of cylinder 51a is large.Therefore known, for pinking, the influence power of the temperature of cylinder 51a is large.Further, about pinking, from the relation of the air inlet with flowing in combustion chamber, in cylinder 51a, compare the part of air inlet side, the influence power of the temperature of the part of exhaust side is large.
To this, cooling unit 1A circulates to a W/J501 by making cooling water, can the part of exhaust side of cooled engine 50.And the part of the exhaust side of cylinder 51a can be cooled thus.Further, the part of the exhaust side of motor 50 becomes the part easily becoming high temperature due to exhaust.Therefore, cooling unit 1A makes cooling water circulate to a W/J501, thus suitably can suppress the generation of pinking.Further, the part of spark plug 54 periphery is cooled simultaneously, also can guarantee the reliability of motor 50 thus.
In addition, cooling unit 1A, by limiting the flow of the cooling water in the 2nd W/J502 circulation, can reduce cooling loss in the part of the air inlet side of motor 50.And thereby, it is possible to reduce cooling loss in the part of the air inlet side of cylinder head 52.And then cooling unit 1A, by arranging a W/J501 at the exhaust side of motor 50 and arranging the 2nd W/J502 at the exhaust side of motor 50, can have the structure of the easy longitudinal flow easily manufactured comparatively speaking.
Therefore, based on above opinion, cooling unit 1A with the structure of easy longitudinal flow, can make the state variable of heat trnasfer partly.And the minimizing of cooling loss can be realized thus simultaneously and avoid pinking performance, thus can the thermal efficiency be improved.
Specifically, cooling unit 1A, when making cooling water circulate to motor 50, makes cooling water all the time to a W/J501 circulation, thus suitably can suppress the generation of pinking.Further, also suitably can guarantee the reliability of motor 50 simultaneously.In addition, when making cooling water to the 2nd W/J502 circulation, when the load of motor 50 is low middle load, makes to reduce when the load that the flow of the cooling water of the 2nd W/J502 circulation compares motor 50 is high load, thus cooling loss can be reduced when low middle load.And thereby, it is possible to suitably realize the minimizing of cooling loss simultaneously and avoid the performance of pinking.
In addition, in cooling unit 1A, regulate when the flow of the cooling water of the 2nd W/J502 circulation at flow control valve 14 in the mode of the cooling capacity suppressing the 2nd W/J502, to improve the mode of the cooling capacity of a W/J501, regulate the flow of the cooling water in a W/J501 circulation.Therefore, cooling unit 1A can cool air inlet thus further.Result more suitably can suppress the generation of pinking.
Embodiment 2
Fig. 8 is the Sketch figure of cooling unit 1B.Cooling unit 1B compares with cooling unit 1A also possesses EGR device 21 and the first branch 22.EGR device 21 is exhausted backflow for motor 50.In other words, motor 50 is the motors being exhausted backflow.
EGR device 21 possesses EGR pipe arrangement 211, EGR flow modulating valve 212 and cooler for recycled exhaust gas 213.EGR pipe arrangement 211 makes exhaust gas recirculation to motor 50.The flow of EGR flow modulating valve 212 to the exhaust being back to motor 50 regulates.Cooler for recycled exhaust gas 312 is by carrying out the exhaust of cooling for reflux to motor 50 with the heat exchange of cooling water.Cooler for recycled exhaust gas 312 is equivalent to cooler.
First branch 22 is shunted the cooling water in a W/J501 circulation, makes it circulate to cooler for recycled exhaust gas 213.The cooling water circulated at the first circulating path C1 is referred at the cooling water of a W/J501 circulation.Therefore, by the cooling water shunting of the part circulation making in the first circulating path C1 from circulating path C1, C2 branch to interflow, the cooling water shunting in a W/J501 circulation can be made.
About this point, specifically, the first branch 22 makes to shunt in the downstream side of a W/J501 at the cooling water of a W/J501 circulation, makes it circulate to cooler for recycled exhaust gas 213.To cooler for recycled exhaust gas 213 circulate cooling water can in the first circulating path C1 the downstream side of the first branch 22 and the part of the upstream side in the place, interflow of circulating path C1, C2 interflow.
The action effect of cooling unit 1B is then described.At this, cooler for recycled exhaust gas 213 is in order to arrange in the generation making the exhaust gas recirculation of high temperature to suppression pinking during motor 50.But if while the cooling loss reducing motor 50, also reduce the flow of the cooling water circulated to cooler for recycled exhaust gas 213 or stop circulating cooling water to cooler for recycled exhaust gas 213, then the temperature having an exhaust of backflow rises or the danger of cooling water boiling.
To this, cooling unit 1B makes, in the cooling water shunting of a W/J501 circulation, to make it circulate to cooler for recycled exhaust gas 213.Therefore, cooling unit 1B can preferably use EGR device 21.And the raising of the fuel economy based on exhaust gas recirculation can be realized thus further.In addition, by making to shunt in the downstream side of a W/J501 at the cooling water of a W/J501 circulation, can also prevent from having an impact to the cooling performance of a W/J501.
Embodiment 3
Fig. 9 is the Sketch figure of cooling unit 1C.Cooling unit 1C also possesses heater core 31 and the second branch 32 compared with cooling unit 1A.In addition, such as also same change can be carried out to cooling unit 1B.Heater core 31, for the heating of vehicle, heats air by carrying out heat exchange with the cooling water of circulation.Heater core 31 is equivalent to heater.
Second branch 32 makes, in the cooling water shunting of a W/J501 circulation, to make it circulate to heater core 31.Specifically, shunt in the downstream side of a W/J501 at the cooling water of a W/J501 circulation, circulate to heater core 31.To heater core 31 circulate cooling water can in the first circulating path C1 the downstream side of the second branch 32 and the part of the upstream side in the place, interflow of circulating path C1, C2 interflow.
The action effect of cooling unit 1C is then described.Cooling unit 1C makes, in the cooling water shunting of a W/J501 circulation, to make it circulate to heater core 31.Therefore, cooling unit 1C, while the cooling loss reducing motor 50, can suppress the reduction of the heating performance of vehicle.That is, suitably heating can be used.In addition, make to shunt in the downstream side of a W/J501 at the cooling water of a W/J501 circulation, thus cooling water more for received heat can be used for heating.As a result, heating performance can also suitably be improved.
Embodiment above for this explanation has been described in detail, but the present invention is not limited to specific embodiment, can carry out various distortion, change in the scope of the main idea of the present invention described in claims.
Label declaration
Cooling unit 1A, 1B, 1C
W/P 11
Radiator 12
Thermostat 13
Flow control valve 14
EGR device 21
Cooler for recycled exhaust gas 213
First branch 22
Heater core 31
Second branch 32
Motor 50
One W/J 501
2nd W/J 502
Cylinder block 51
Cylinder head 52
Packing ring 53
Spark plug 54
ECU 70
Claims (4)
1. a cooling unit for motor, possesses cylinder block and the cylinder head of the motor being provided with the first cooling medium path and the second cooling medium path that cooling medium is circulated,
Above-mentioned first cooling medium path make part from above-mentioned cooling medium to the exhaust side in above-mentioned cylinder block circulation after, the part circulation of the exhaust side in the regulation region of the spark plug periphery of above-mentioned cylinder head is arranged at again to comprising in above-mentioned cylinder head, afore mentioned rules region is the region that can cool the part of above-mentioned spark plug periphery in above-mentioned cylinder head
Above-mentioned second cooling medium path by group enter from above-mentioned first cooling medium path the different cooling medium circulating path of the cooling medium circulating path that enters of group, make part circulation from above-mentioned cooling medium to the air inlet side in above-mentioned cylinder block after, then to circulate to the part of the air inlet side in above-mentioned cylinder head.
2. the cooling unit of motor according to claim 1, wherein,
Also possess cooling medium control unit,
When making when making above-mentioned cooling medium circulate to above-mentioned motor above-mentioned cooling medium to above-mentioned first cooling medium path circulation and make above-mentioned cooling medium to above-mentioned second cooling medium path circulation, the flow to the above-mentioned cooling medium of above-mentioned second cooling medium path circulation when the load that this cooling medium control unit makes to compare above-mentioned motor when the load of above-mentioned motor is low middle load to the flow of above-mentioned cooling medium of above-mentioned second cooling medium path circulation is high load reduces.
3. the cooling unit of motor according to claim 2, wherein,
Above-mentioned motor is the motor being exhausted backflow,
The cooling unit of above-mentioned motor also possesses:
Cooler, can be cooled the exhaust being back to above-mentioned motor by the heat exchange between the above-mentioned cooling medium of circulation; And
First branch, makes the above-mentioned cooling medium shunting in above-mentioned first cooling medium path circulation and circulates to above-mentioned cooler.
4. the cooling unit of the motor according to Claims 2 or 3, wherein, also possesses:
Heater, can add hot air by the heat exchange between the above-mentioned cooling medium of circulation; And
Second branch, makes the above-mentioned cooling medium shunting in above-mentioned first cooling medium path circulation and circulates to above-mentioned heater.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/072416 WO2012081081A1 (en) | 2010-12-13 | 2010-12-13 | Engine cooling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103261616A CN103261616A (en) | 2013-08-21 |
| CN103261616B true CN103261616B (en) | 2015-04-01 |
Family
ID=46244210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080070660.7A Expired - Fee Related CN103261616B (en) | 2010-12-13 | 2010-12-13 | Engine cooling apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20130247848A1 (en) |
| EP (1) | EP2653687A4 (en) |
| JP (1) | JP5541371B2 (en) |
| CN (1) | CN103261616B (en) |
| WO (1) | WO2012081081A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106662033B (en) * | 2014-06-30 | 2019-01-18 | 日产自动车株式会社 | Internal combustion engine |
| WO2016001987A1 (en) * | 2014-06-30 | 2016-01-07 | 日産自動車株式会社 | Internal combustion engine |
| JP6264325B2 (en) * | 2015-06-05 | 2018-01-24 | トヨタ自動車株式会社 | Control device for internal combustion engine |
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- 2010-12-13 WO PCT/JP2010/072416 patent/WO2012081081A1/en active Application Filing
- 2010-12-13 EP EP10860673.2A patent/EP2653687A4/en not_active Withdrawn
- 2010-12-13 CN CN201080070660.7A patent/CN103261616B/en not_active Expired - Fee Related
- 2010-12-13 JP JP2012548562A patent/JP5541371B2/en not_active Expired - Fee Related
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| JP2001164988A (en) * | 1999-12-07 | 2001-06-19 | Toyota Motor Corp | Cylinder head |
| JP2010169010A (en) * | 2009-01-23 | 2010-08-05 | Aisin Seiki Co Ltd | Cooling device for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2653687A1 (en) | 2013-10-23 |
| EP2653687A4 (en) | 2014-11-05 |
| JPWO2012081081A1 (en) | 2014-05-22 |
| JP5541371B2 (en) | 2014-07-09 |
| US20130247848A1 (en) | 2013-09-26 |
| WO2012081081A1 (en) | 2012-06-21 |
| CN103261616A (en) | 2013-08-21 |
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