CN103282617A - Cooling device for engine - Google Patents
Cooling device for engine Download PDFInfo
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- CN103282617A CN103282617A CN2010800702733A CN201080070273A CN103282617A CN 103282617 A CN103282617 A CN 103282617A CN 2010800702733 A CN2010800702733 A CN 2010800702733A CN 201080070273 A CN201080070273 A CN 201080070273A CN 103282617 A CN103282617 A CN 103282617A
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- Prior art keywords
- cooling medium
- air inlet
- medium path
- inlet side
- motor
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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
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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
- F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
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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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/26—Cylinder heads having cooling means
- F02F1/36—Cylinder heads having cooling means for liquid cooling
- F02F1/40—Cylinder heads having cooling means for liquid cooling cylinder heads with means for directing, guiding, or distributing liquid stream
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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
- F01P2003/028—Cooling cylinders and cylinder heads in series
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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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P2005/105—Using two or more pumps
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P2011/205—Indicating devices; Other safety devices using heat-accumulators
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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
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
- F01P2025/62—Load
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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
- F01P2025/00—Measuring
- F01P2025/60—Operating parameters
- F01P2025/64—Number of revolutions
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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
- F01P2037/00—Controlling
- F01P2037/02—Controlling starting
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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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
A cooling device (1A) is provided with an engine (50A) in which W/Js (501, 502, 503A) are provided, and a first control valve (31). The W/J (501) is provided in a portion on the intake side of a cylinder block (51A). The W/J (502) is provided in a portion on the exhaust side of the cylinder block (51A). The W/J (503A) is provided branching off from a predetermined position of the W/J (501), and provided leading to a portion on the exhaust side of a cylinder head (52A) via a portion on the intake side thereof. The first control valve (31) enables the state in which cooling water flows to be changed between a state in which the cooling water flows through the W/J (501) and a state in which the cooling water flows through the W/Js (501, 503A).
Description
Technical field
The present invention relates to the cooling unit of motor.
Background technique
Generally adopt cooling water to cool off at motor.In addition, the rising of the heat load of cylinder head also is well-known.In patent documentation 1, disclose and improved the cooling of cylinder head on the one hand, prevent the cooling unit of the supercooled multicylinder engine of cylinder block on the other hand.
The prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 08-177483 communique
Summary of the invention
The problem that invention will solve
For example carry out the cooling of motor for the generation that suppresses detonation.Yet, cooling off if surpass with needing, cooling loss increases, and the result can cause the low of the thermal efficiency.
The present invention is in view of above-mentioned problem, and its purpose is to provide the cooling unit of the motor of the reduction that can take into account cooling loss and detonation performance.
Be used for solving the technological scheme of problem
The present invention is a kind of cooling unit of motor, wherein, comprise motor and the 1st Status Change portion, described motor possesses cylinder block and cylinder head and is provided with air inlet side cooling medium path, exhaust side cooling medium path and branch's cooling medium path, described air inlet side cooling medium path is arranged on the part of the air inlet side in the described cylinder block along the orientation of a plurality of cylinder barrels that are arranged at described cylinder block, described exhaust side cooling medium path and described air inlet side cooling medium path are mutually independently and be arranged at the part of the exhaust side in the described cylinder block along the orientation of described a plurality of cylinder barrels, described branch cooling medium path is from the preposition branch of described air inlet side cooling medium path and from the part setting of described air inlet side cooling medium path via the part of the air inlet side the described cylinder head exhaust side in the described cylinder head, and then the part of the exhaust side in described cylinder head is along the orientation setting of described cylinder barrel, and the state that described the 1st Status Change portion can make the cooling medium circulation is in conversion between the following state: the state that the described air inlet side cooling medium path of cooling medium in described air inlet side cooling medium path and described branch cooling medium path circulated; Make cooling medium at the state of described air inlet side cooling medium path and the cooling medium path circulation of described branch.
In addition, the present invention is preferably following structures: also comprise the 1st circulation control device, it has described the 1st Status Change portion, running state at described motor is under the situation of slow-speed of revolution high load, cooling medium is circulated in described air inlet side cooling medium path and described exhaust side cooling medium path, and make in the described air inlet side cooling medium path of cooling medium in described air inlet side cooling medium path and described branch cooling medium path and circulate.
In addition, the present invention is preferably following structures: also comprise the 2nd circulation control device, it has described the 1st Status Change portion, running state at described motor is under the situation of light load, forbids making cooling medium to circulate in described air inlet side cooling medium path and described exhaust side cooling medium path.
In addition, the present invention is preferably following structures: also comprise: heat exchanger, and it carries out heat exchange between air and the cooling medium that circulates in described exhaust side cooling medium path; Thermal accumulator, it is stored in cooling medium and the insulation of circulating in the described exhaust side cooling medium path; The 2nd Status Change portion, it can make the state that state of cooling medium circulation circulates and make conversion between the state that cooling medium circulates in described thermal accumulator in the described heat exchanger that makes cooling medium in described heat exchanger and described thermal accumulator; With the 3rd circulation control device, it has described the 2nd Status Change portion, in the running state of described motor when being cold machine operation or under the situation during engine start, cooling medium is circulated in described exhaust side cooling medium path, and make in the described thermal accumulator of cooling medium in described heat exchanger and described thermal accumulator and circulate.
In addition, the present invention is preferably following structures: also comprise high heat conduction part, it is arranged at cylinder barrel part each other adjacent in described a plurality of cylinder barrel in described cylinder block, upper side in described cylinder block exposes, and has the heat conductivity higher than the mother metal of described cylinder block.
In addition, the present invention is preferably following structures: described high heat conduction part comprises slot part and high conducting-heat elements;
Described slot part is arranged at cylinder barrel part each other adjacent in described a plurality of cylinder barrel in described cylinder block, in described upper side opening, and have the predetermined degree of depth; Described high conducting-heat elements is by supplying with material and being arranged at its fusing in the described slot part and making it expose at described upper side with laser beam to described slot part, described high conducting-heat elements has the heat conductivity higher than the mother metal of described cylinder block.
The effect of invention
According to the present invention, the reduction of cooling loss and detonation performance are set up simultaneously.
Description of drawings
Fig. 1 is the summary construction diagram of cooling unit of embodiment 1 motor.
Fig. 2 is the summary construction diagram of embodiment 1 motor.
Fig. 3 is the figure of each water jacket of expression.
Fig. 4 is the figure of expression air inlet side, exhaust side water jacket.
Fig. 5 is the figure of expression branch water jacket.
Fig. 6 is the summary construction diagram of ECU.
Fig. 7 is the figure in the interval of expression engine operating state.
Fig. 8 is the figure of the 1st circulation style of expression cooling water.
Fig. 9 is the figure of the 2nd circulation style of expression cooling water.
Figure 10 is the figure of the 3rd circulation style of expression cooling water.
Figure 11 is the figure with flowcharting the 1st work.
Figure 12 is expression and the heat conductivity of the corresponding firing chamber of degree in crank angle and the figure of surface area ratio.
Figure 13 is the summary construction diagram of cooling unit of embodiment 2 motor.
Figure 14 is the figure of the 4th circulation style of expression cooling water.
Figure 15 is the figure with flowcharting the 2nd work.
Figure 16 is the vertical sectional view of embodiment 3 motor.
Figure 17 is the worm's eye view of embodiment 3 cylinder block.
Figure 18 is the enlarged view of the 1st high heat conduction part periphery shown in Figure 16.
Figure 19 is the figure of the 1st concrete example of expression the 2nd high heat conduction part.
Figure 20 is the figure of the 2nd concrete example of expression the 2nd high heat conduction part.
Figure 21 is the enlarged view of the 3rd high heat conduction part periphery shown in Figure 16.
Figure 22 is the figure that schematically shows the formation method of high conducting-heat elements.
Figure 23 is the figure of the 1st variation of the cooling unit of expression motor.
Figure 24 is the figure of the 2nd variation of the cooling unit of expression motor.
Embodiment
Utilize accompanying drawing that embodiments of the invention are described.
Fig. 1 is the summary construction diagram 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 comprises the 1st water pump (hereinafter referred to as W/P) the 11, the 1st radiator 12,2W/P21, the 2nd radiator 22, the 1st control valve 31 and motor 50A.
W/P11,21 is cooling medium force feed portion, and force feed is as the cooling water of cooling medium.W/P11,21 is specially the variable W/P of the flow of the cooling water that can change force feed.W/P11,21 force feed cooling waters circulate cooling water in motor 50A.Radiator 12,22 is heat exchanger, carries out heat exchange between the cooling water that circulates to motor 50A and air.
Be provided with air inlet side water jacket (hereinafter referred to as W/J) 501 and exhaust side W/J502 at motor 50A.Relative therewith, 1W/P11 specifically makes cooling water circulate in air inlet side W/J501.On the other hand, 2W/P21 circulates cooling water in exhaust side W/J502.In addition, the 1st radiator 12 carries out heat exchange between the cooling water that circulates to air inlet side W/J501 and air.On the other hand, the 2nd radiator 22 carries out heat exchange between the cooling water that circulates to exhaust side W/J502 and air.
The cooling capacity of the 2nd radiator 22 is set greatlyyer than the cooling capacity of the 1st radiator 12.Specifically the capacity of Capacity Ratio the 1st radiator 12 of the 2nd radiator 22 is big.Therefore, the 2nd radiator 22 carries out heat exchange between the cooling water that circulates to exhaust side W/J502 and air, make under the identical situation of the flow of cooling water, to the cooling water temperature of the cooling water of exhaust side W/J502 circulation than low to the cooling water of air inlet side W/J501 circulation.
On motor 50A, except W/J501,502, also be provided with the W/J503A of branch.The W/J503A of branch is from air inlet side W/J501 branch.The cooling water that circulates in the W/J503A of branch collaborates again with the cooling water that circulates in air inlet side W/J501.
The 1st control valve 31 is arranged at the place at the cooling water that circulates and the cooling water that circulates interflow in the W/J503A of branch in air inlet side W/J501.The 1st control valve 31 between the state that state and the cooling water of the air inlet side W/J501 circulation of cooling water in W/J501, W/J503A circulates in W/J501, W/J503A, switches the circulation status of cooling water.Thus, can change the circulation status of cooling water.
In cooling unit 1A, be formed with a plurality of cooling water circulating paths.As the cooling water circulating path, for example having the circulating path of organizing to go into to have air inlet side W/J501 is the 1st circulating path C1.The cooling water that circulates in the 1st circulating path C1 circulates in air inlet side W/J501 via the 1st radiator 12 then from the 1W/P11 ejection.Then, in air inlet side W/J501, after the circulation, turn back to 1W/P11 via the 1st control valve 31.
In addition, as the cooling water circulating path, for example having the circulating path of organizing to go into to have exhaust side W/J502 is the 2nd circulating path C2.The cooling water that circulates in the 2nd circulating path C2 circulates in exhaust side W/J502 via the 2nd radiator 22 then from the 2W/P21 ejection.Then, in exhaust side W/J502, after the circulation, turn back to 2W/P21.
In addition, as the cooling water circulating path, for example having the circulating path of organizing to go into to have the W/J503A of branch is the 3rd circulating path C3.The cooling water that circulates in the 3rd circulating path C3 flows into air inlet side W/J501 via the 1st radiator 12 then from the 1W/P11 ejection.Then, from the way of air inlet side W/J501, flow into the W/J503A of branch.Then, in the W/J503A of branch, after the circulation, turn back to 1W/P11 via the 1st control valve 31.
Therefore, the 1st control valve 31 particularly is arranged on the place at the 1st circulating path C1 and the 3rd circulating path C3 interflow.The 1st control valve 31 also can be arranged among the 3rd circulating path C3 for example ratio engine 50A by the downstream side and than with the place, interflow of the 1st circulating path C1 part by upstream side.In this case, the 1st control valve 31 for example can be made as zero by the flow that changes the cooling water that whether will circulate in the W/J503A of branch, changes the circulation status of cooling water.
When the flow of the cooling water that will circulate whether changes to zero, for example can permit, forbid the circulation of the cooling water that in the W/J503A of branch, circulates in the W/J503A of branch.In addition, for example can change the flow of the cooling water that in the W/J503A of branch, circulates.The 1st control valve 31 is equivalent to the 1st Status Change portion.
Fig. 2 is the summary construction diagram of motor 50A.Motor 50A is spark-ignited internal combustion engine, comprises cylinder block 51A, cylinder head 52A, piston 53, cylinder cover cushion 54A, intake valve 55, exhaust valve 56 and spark plug 57.
Be provided with cylinder barrel 51a at cylinder block 51A.In cylinder barrel 51a, be provided with piston 53.On cylinder block 51A, be provided with cylinder head 52A across cylinder cover cushion 54A.Therefore, cylinder cover cushion 54A is arranged between cylinder block 51A and the cylinder head 52A.Cylinder cover cushion 54A has high adiabaticity.At that point, among the cylinder cover cushion 54A substrate is made as SUS and also is coated with the high rubber of adiabaticity (for example NBR rubber) from the teeth outwards.Cylinder barrel 51a wall portion, cylinder head 52A and piston 53 form firing chamber E.
Be formed with to firing chamber E at cylinder head 52A and import the suction port 52a of air inlet and to discharge the relief opening 52b of gas from firing chamber E.In addition, be provided with the intake valve 55 that opens and closes suction port 52a and the exhaust valve 56 that opens and closes relief opening 52b.Spark plug 57 is arranged at cylinder head 52A in the mode of the center upper portion of close firing chamber E.
Be provided with air inlet side W/J501 and exhaust side W/J502 at cylinder block 51A.Air inlet side W/J501 is arranged at the part of the air inlet side among the cylinder block 51A.Exhaust side W/J502 is arranged at the part of the exhaust side among the cylinder block 51A.W/J501,502 and the wall portion of cylinder barrel 51a be adjacent to arrange.
Fig. 3 is the figure of expression W/J501,502,503A.Fig. 4 is expression W/J501,502 figure.Fig. 5 is the figure of the expression W/J503A of branch.In Fig. 3, represent W/J501,502,503A with the stereogram of motor 50A.In Fig. 4, represent W/J501,502 with the worm's eye view of cylinder block 51A.In Fig. 5, schematically show the W/J503A of branch with the stereogram of the internal structure of cylinder head 52A.
In cylinder block 51A, be provided with a plurality of (being 4 here) cylinder barrel 51a.A plurality of cylinder barrel 51a configuration in upright arrangement.Air inlet side W/J501 is along the orientation setting of a plurality of cylinder barrel 51a.On cylinder block 51A, the i.e. side opposite with output one side of obtaining motor 50A in the front side of motor 50A is provided with the air inlet side entrance 51b of portion that imports cooling water to air inlet side W/J501.In addition, the rear side at motor 50A is provided with the air inlet side outlet 51c of portion that discharges cooling water from air inlet side W/J501.Air inlet side W/J501 makes cooling water logical to backside flow from the front side of motor 50A.
Exhaust side W/J502 and air inlet side W/J501 arrange independently.In addition, along the orientation setting of a plurality of cylinder barrel 51a.On cylinder block 51A, be provided with the exhaust side entrance part 51d that imports cooling water to exhaust side W/J502 in the front side of motor 50A.In addition, the rear side at motor 50A is provided with the 51e of exhaust side export department that discharges cooling water from exhaust side W/J502.Exhaust side W/J502 makes cooling water logical to backside flow from the front side of motor 50A.
W/J501,502 is in the upper side D of cylinder block 51A upper shed.That is, cylinder block 51A is the cylinder block of open top side Noodles type.Air inlet side W/J501 is equivalent to air inlet side cooling medium path, and exhaust side W/J502 is equivalent to exhaust side cooling medium path.
The W/J503A of branch is arranged to, and begins branch from the preposition of air inlet side W/J501, and from the part of air inlet side W/J501 exhaust side in cylinder head 52A via the part of the air inlet side the cylinder head 52A.And then the part of the exhaust side of the W/J503A of branch in cylinder head 52A is along the orientation setting of a plurality of cylinder barrel 51a.
Preposition is corresponding with cylinder barrel 51a and set.Therefore, the W/J503A of branch comprises a plurality of (being 4 here) the part W/J503a that is branched off into each cylinder barrel 51a.Part W/J503a makes the part of the air inlet side of cooling water from cylinder head 52A to the part circulation of exhaust side.That is, cooling water is circulated with respect to the fore-and-aft direction crossing current of motor 50A.
Part W/J503a is arranged to, on one side part configuration example from from the part of air inlet side to exhaust side such as above-mentioned part W/J503aa on one side each one of cylinder head 52A is cooled off to 503ad.The W/J503A of the branch part of the exhaust side in cylinder head 52A on one side extends along the orientation of a plurality of cylinder barrel 51a, Yi Bian make each several part W/J503a interflow.The W/J503A of branch is equivalent to branch's cooling medium path.
Fig. 6 is the summary construction diagram of ECU70A.Cooling unit 1A also comprises ECU70A.ECU70A is electric control device, comprises the microcomputer and the imput output circuit 75,76 that are made of CPU71, ROM72, RAM73.These structures are connected to each other via bus 74.
Be electrically connected with various sensing switch kind equipments at ECU70A, as for detection of the crank angle sensor 81 of the rotating speed of motor 50A, be used for the airflow meter 82 of the suction air quantity of instrumentation motor 50A, for detection of the accelerator open degree sensor 83 of accelerator open degree, detect the cooling-water temperature sensor 84 etc. of the temperature of cooling water.In addition, be electrically connected with various control objects such as W/P11, the 21 and/or the 1st control valve 31.The load of motor 50A for example can be based on the output of airflow meter 82 and/or accelerator open degree sensor 83 and is detected by ECU70A.
ROM72 has recorded and narrated the structure of the program of the performed various processing of CPU71 and/or mapping (enum) data etc. for being used for storage.CPU71 utilizes the temporary transient storage data of RAM73 to carry out processing simultaneously based on the program that is stored in ROM72 as required, functionally realizes various control devices, detection unit, detection unit and/or calculating part etc. by ECU70A thus.
For example by ECU70A, functionally realize the control device of correspondingly circulation of the cooling water of W/J501,502,503A being controlled with engine operating state (running state of motor 50A).Control device is by controlling and the circulation of cooling water is controlled W/P11, the 21 and the 1st control valve 31.
Fig. 7 is the figure in the interval of expression engine operating state.As shown in Figure 7, engine operating state except the rotating speed of motor 50A and load, also is categorized as 6 intervals from interval D1 to D6 when whether being cold machine operation or when whether being engine start.And control device is specifically as followsly set the requirement that each should satisfy from interval D1 to D6 like that when controlling, and is identified for satisfying the steering needle of the requirement that sets.
At first, be under the situation of the idling mode corresponding with interval D1 at engine operating state, set by air inlet these 2 requirements of exhaust-gas temperature rising that the velocity of combustion that causes improves and be used for the exhaust emission control catalyst activity that heat up.In addition, the intensification on the top of suction port 52a and cylinder barrel 51a wall portion and these 2 steering needles of intensification of relief opening 52b have accordingly been determined therewith.
In addition, be under the situation of the light load corresponding with interval D2 at engine operating state, set thermal efficiency raising (cooling loss reduction) and improved this 2 requirements by the air inlet velocity of combustion that causes that heats up.In addition, these 2 steering needles of intensification on the top of the thermal insulation of cylinder head 52A and suction port 52a and cylinder barrel 51a wall portion have accordingly been determined therewith.
In addition, be under the situation of the slow-speed of revolution high load corresponding with interval D3 at engine operating state, reduction and the thermal efficiency of setting detonation improve (cooling loss reduction) such requirement.In addition, the cooling on the top of suction port 52a and cylinder barrel 51a wall portion and adiabatic such steering needle of cylinder head 52A have accordingly been determined therewith.
In addition, be under the situation of the high rotating speed high load corresponding with interval D4 at engine operating state, set that reliability is guaranteed and these 2 requirements of reduction of detonation.In addition, determined therewith around the corresponding spark plug 57 and between the inlet and exhaust valve 55,56 with the cooling of relief opening 52b and these 2 steering needles of cooling of suction port 52a.
In addition, when corresponding with interval D5 cold machine operation, set and promote engine warming up and improve this 2 requirements by the air inlet velocity of combustion that causes that heats up.In addition, these 2 steering needles of intensification on the top of the heat conduction promotion of cylinder head 52A and suction port 52a and cylinder barrel 51a wall portion have accordingly been determined therewith.
In addition, when the engine start corresponding with interval D6, set ignitability raising and fuel gasification and promoted this 2 requirements.In addition, intensification these 2 steering needles with the top of cylinder barrel 51a wall portion have been determined around the intensification of corresponding suction port 52a therewith and the spark plug 57.
Relative therewith, in cooling unit 1A, be embodied as control device and carry out control as follows.Fig. 8 is the figure of the 1st circulation style of expression cooling water.Fig. 9 is the figure of the 2nd circulation style of expression cooling water.Figure 10 is the figure of the 3rd circulation style of expression cooling water.In Fig. 8, Fig. 9, Figure 10, dot the state that cooling water does not circulate, represent the state of cooling water circulation with thick line.
As shown in Figure 8, control device is embodied as, under engine operating state is the situation of the idling mode corresponding with interval D1, for the situation of the corresponding light load of interval D2 under, under the situation for the corresponding cold machine operation of interval D5 the time and under the situation for the corresponding engine start of interval D6 the time, forbid making cooling water to W/J501,502 circulations.Specifically, be embodied as and carry out the control that stops for W/P11,21 driving.
As shown in Figure 9, control device is embodied as, and is under the situation of the slow-speed of revolution high load corresponding with interval D3 at engine operating state, and cooling water is circulated in W/J501,502, and makes among the air inlet side W/J501 of cooling water in W/J501,503A and circulate.Specifically, be embodied as control the 1st control valve 31 to carry out for driving W/P11,21 control cooling water being circulated to the air inlet side W/J501 among W/J501, the 503A.
As shown in figure 10, control device is embodied as, be under the situation of the high rotating speed high load corresponding with interval D4 at engine operating state, cooling water circulated in W/J501,502, and cooling water is circulated among the W/J501 in W/J501,503A, the 503A respectively.Specifically, be embodied as and carry out for driving W/P11,21 control, and control the 1st control valve 31 and make cooling water circulate among the W/J501 in W/J501,503A, the 503A respectively.
Control device also can be implemented as, be under the situation of the slow-speed of revolution high load corresponding with interval D3 at engine operating state, cooling water is circulated in W/J501,502, and as required and then make cooling water respectively among the W/J501 in W/J501,503A, the 503A or in the W/J503A of branch, circulate.In this case, for example can cooling water suitably be circulated in the W/J503A of branch for the boiling that suppresses cooling water.
Control device constitutes the circulation control device according to engine operating state independently with W/P11, the 12 and the 1st control valve 31.At that point, the part of carrying out above-mentioned control under engine operating state is the situation of slow-speed of revolution high load in the control device is equivalent to the 1st circulation control device with W/P11, the 12 and the 1st control valve 31.In addition, the part of carrying out above-mentioned control under engine operating state is the situation of light load in the control device is equivalent to the 2nd circulation control device with W/P11, the 12 and the 1st control valve 31.
Next describe with flow chart shown in Figure 11 i.e. the 1st work of work to ECU70A.When ECU70A takes a decision as to whether engine start (step S1).If certainly judge, then ECU70A stops (step S21A) with W/P11,21 driving.Then, this flow process is temporarily finished.On the other hand, if negate to judge, when then ECU70A takes a decision as to whether cold machine operation (step S2).Can whether be that predetermined value (for example 75 ℃) is with the judgement of getting off by coolant water temperature for example when whether being cold machine operation.If in step S2, be affirmative determination, then enter step S21A.
If be to negate to judge in step S2, then ECU70A detects rotating speed and the load (step S11) of motor 50A.Then, judge and detected rotating speed and the corresponding interval of loading (step S12 to S14).If specifically Dui Ying interval is interval D1, then the sure judgement from step S12 enters step S21A.In addition, if be interval D2, then the sure judgement from step S13 enters step S21A.
If corresponding interval is interval D3, then the sure judgement from step S14 enters step S31.At this moment, ECU70A drives W/P11,21 and control the 1st control valve 31 and make and circulate among the air inlet side W/J501 of cooling water in W/J501,503A.After step S31, this flow process is temporarily finished.
If corresponding interval is interval D4, then the negative judgement from step S14 enters step S41.ECU70A drives W/P11,21 and control the 1st control valve 31 and make cooling water circulate among the W/J501 in W/J501,503A, the 503A respectively.After step S41, this flow process is temporarily finished.
Next the action effect to cooling unit 1A describes.Figure 12 is expression and the heat conductivity of the corresponding firing chamber E of degree in crank angle and the figure of surface area ratio.As shown in figure 12, heat conductivity raises near compression stroke top dead center as can be known.And as can be known for the surface area ratio, the surface area ratio of cylinder head 52A and piston 53 becomes big near compression stroke top dead center.Therefore as can be known for cooling loss, the Temperature Influence power of cylinder head 52A is bigger.
On the other hand, as can be known for detonation, big in the surface area ratio that exists with ... the compression end temperature part, having influence on cylinder barrel 51a wall portion in the air inlet compression stroke of compression end temperature.Therefore, the Temperature Influence power for detonation cylinder barrel 51a wall portion is big as can be known.
Relative therewith, cooling unit 1A can make cooling water circulate in W/J501,502.Thus, cylinder barrel 51a wall portion can be cooled off.Therefore, cooling unit 1A can suppress the generation of detonation.In addition, the cooling unit 1A circulation status that can switch cooling water makes and circulates among the air inlet side W/J501 of cooling water in W/J501,503A.And thus, also can be reduced in the cooling loss that cylinder head 52A produces.Therefore, cooling unit 1A can take into account reduction and the detonation performance of cooling loss.
At that point, cooling unit 1A is specific as follows describedly controls the circulation of cooling water like that.That is, be under the situation of slow-speed of revolution high load at engine operating state, cooling water is circulated in W/J501,502, and make among the air inlet side W/J501 of cooling water in W/J501,503A and circulate.Thus, be under the situation of slow-speed of revolution high load at engine operating state, to circulate in the W/J503A of branch by not making cooling water, the reduction that can seek cooling loss suppresses the generation of detonation simultaneously.
In addition, be under the situation of light load at engine operating state, forbid making cooling water in W/J501,502, to circulate.Thus, can reduce the temperature of cooling loss and raising air inlet and/or exhaust.In addition, under engine operating state is the situation of idling mode, during the operation of cold machine and/or during engine start, can improve the temperature of air inlet and/or exhaust equally.Thus, can seek to burn and improve and/or the activate of exhaust emission control catalyst or keeping of active temperature.As a result, can suppress the deterioration of fuel economy and/or the increase of amount of exhaust emission.
In addition, be under the situation of high rotating speed high load at engine operating state, cooling water is circulated in W/J501,502 and cooling water is circulated among the W/J501 in W/J501,503A, the 503A respectively.Thus, can seek that reliability is guaranteed and/or the reduction of detonation.In addition, the heat load that for example can also seek the exhaust emission control catalyst that the decline by delivery temperature causes reduces.
And the cooling unit 1A that the circulation of cooling water is controlled mainly can seek the raising of the thermal efficiency when slow-speed of revolution high load like this, and the operation of motor 50A is set up.Therefore, not only under specific running state, observe the raising that also can seek the thermal efficiency as the operation integral body of the motor 50A that carries out usually.
But the part of the exhaust side in the cylinder barrel 51a wall portion becomes the part of the air inlet contact that flows into firing chamber E.In addition, the reason because of exhaust becomes the part that becomes high temperature easily.Therefore, for detonation, the part of the Temperature Influence force rate air inlet side of the part of the exhaust side in the cylinder barrel 51a wall portion is big.
Relative therewith, under the identical situation of the flow of cooling water, cooling unit 1A can make the coolant water temperature of the cooling water that circulates in exhaust side W/J502 lower than the cooling water that circulates in air inlet side W/J501 by enough the 2nd radiators 22.Thus, the cooling of the part by improving the exhaust side in the cylinder barrel 51a wall portion can more suitably suppress the generation of detonation.
In addition, cooling unit 1A possesses the high cylinder cover cushion 54A of adiabaticity, thus also can suppress to be accompanied by cylinder barrel 51a wall portion cooling and with the situation of cylinder head 52A cooling.As a result, also can reduce cooling loss thus.
In addition, cooling unit 1A circulates cooling water and is making under the situation about circulating among the air inlet side W/J501 of cooling water in W/J501,503A in W/J501,502, by cooling water is circulated, reduce cooling loss while also can for example prevent the minimal cooling of necessity such as boiling of cooling water in the W/J503A of branch.
Figure 13 is the summary construction diagram of cooling unit 1B.Cooling unit 1B is except also comprising thermal accumulator 25 and the 2nd control valve 32 this point and replacing ECU70A to possess the ECU70B this point, and is identical with cooling unit 1A essence.ECU70B except so that be electrically connected with the 2nd control valve 32 this point and realize like that as described later the control device, identical with ECU70A essence.Therefore, will illustrate omission for ECU70B.
In cooling unit 1B, and then be formed with the 4th circulating path C4 that is assembled with thermal accumulator 25.The cooling water that circulates in the 4th circulating path C4 circulates in thermal accumulator 25 then from the 2W/P21 ejection.In addition, in thermal accumulator 25, after the circulation, circulate in exhaust side W/J502 via the 2nd control valve 32.Then, in exhaust side W/J502, after the circulation, turn back to 2W/P21.
The 2nd control valve 32 is arranged at the place at the 2nd circulating path C2 and the 4th circulating path C4 interflow.Switch between the state that the state that the 2nd control valve 32 circulates cooling water circulates in the 2nd radiator 22 that makes cooling water in the 2nd radiator 22 and thermal accumulator 25 and the state that cooling water is circulated in thermal accumulator 25.Thus, the state that can conversion makes the cooling water circulation.The 2nd control valve 32 for example also can be used as switching valve that the connection of thermal accumulator 25, non-connected state are switched and in be loaded in the thermal accumulator 25.The 2nd control valve 32 is equivalent to the 2nd Status Change portion.
Figure 14 is the figure of the 4th circulation style of expression cooling water.In Figure 14, dot the state that cooling water does not circulate, represent the state of cooling water circulation with thick line.As shown in figure 14, under the situation in ECU70B when engine operating state is the operation of cold machine or during engine start, control device is realized: forbid making among the air inlet side W/J501 of cooling water in W/J501,502 circulation and cooling water is circulated in exhaust side W/J502.Specifically, realize: carry out the control that stops for the driving with 1W/P11 and carry out for the control that drives 2W/P21.
In addition, control device is realized: the state of change cooling water circulation makes cooling water circulation in the thermal accumulator 25 in the 2nd radiator 22 and the thermal accumulator 25.Specifically, realize: the 2nd control valve 32 is controlled made cooling water circulation in the thermal accumulator 25 in the 2nd radiator 22 and the thermal accumulator 25.
Under the situation when engine operating state is the operation of hot machine, control device is realized: the state of change cooling water circulation makes cooling water circulation in the 2nd radiator 22 in the 2nd radiator 22 and the thermal accumulator 25.Specifically, realize: the 2nd control valve 32 is controlled made cooling water circulation in the 2nd radiator 22 in the 2nd radiator 22 and the thermal accumulator 25.Except these points, the situation of control device and ECU70A similarly realizes.The part and W/P11, the 12 and the 2nd control valve 32 of carrying out above-mentioned control under the situation when engine operating state is the operation of cold machine or during engine start in the control device are equivalent to the 3rd circulation control device.
Next use flow chart shown in Figure 15 that i.e. the 2nd work of work of ECU70B is described.In addition, here the part different with flow chart shown in Figure 11 described especially.Under the situation for judgement certainly in step S1, S2, ECU70B stops the driving of 1W/P11, and drives 2W/P21.In addition, the 2nd control valve 32 is controlled made cooling water circulation (step S21B) in the thermal accumulator 25 in the 2nd radiator 22 and the thermal accumulator 25.Thus, can utilize the cooling water of when the motor operation of last time, storing and remain in thermal accumulator 25.Behind step S21B, this flow chart is temporarily finished.
In step S2 if when negate judging, then be judged as when being in hot machine operation.At this moment, ECU70B controls the 2nd control valve 32 and makes cooling water circulation (step S3) in the 2nd radiator 22 in the 2nd radiator 22 and the thermal accumulator 25.Thus, when moving, hot machine can utilize the 2nd radiator 22.Simultaneously, thermal accumulator 25 can be stored and remained in to the cooling water with coolant water temperature higher than atmospheric temperature at least.
Next the action effect to cooling unit 1B describes.Under the situation of cooling unit 1B when engine operating state is the operation of cold machine or during engine start, forbid making the cooling water circulation and cooling water is circulated in exhaust side W/J502.And, cooling water is circulated in exhaust side W/J502 and make in the thermal accumulator 25 of cooling water in the 2nd radiator 22 and thermal accumulator 25 and circulate.
Therefore, under the situation of cooling unit 1B when engine operating state is the operation of cold machine or during engine start, can suitably improve the temperature of air inlet and/or exhaust.In addition, for example under the situation of inner cylinder direct injection fuel, also can promote the gasification of fuel.Thus, also can suppress the lubricating oil dilution of the cylinder barrel 51a wall that caused by fuel.As a result, the operation establishment of comparing with cooling unit 1A and can suitably make motor 50A.
Figure 16 is the vertical sectional view of motor 50B.Figure 16 is the figure from the exhaust side observation along the vertical section of the motor 50B of the orientation of cylinder barrel 51a.The related cooling unit 1C of present embodiment possesses except replacing motor 50A the motor 50B this point, and is identical with cooling unit 1B essence.Therefore, the summary construction diagram for cooling unit 1C will illustrate omission.In addition, also can carry out same change to cooling unit 1A.
The W/J503B of branch possesses except instead of part W/J503a the part W/J503b this point, and is identical with branch W/J503A essence.Part W/J503b except with cylinder barrel 51a between and the two ends of a plurality of cylinder barrel 51a integral body corresponding and arrange this point, identical with part W/J503a essence.That is, except between preposition and the cylinder barrel 51a and the two ends of a plurality of cylinder barrel 51a integral body corresponding and arrange this point, identical with part W/J503a essence.
Part W/J503b also can for example be made as preposition the position corresponding with cylinder barrel 51a, and with among the cylinder head 52B with cylinder barrel 51a between the part setting of the mode cooled off of relative part from the part of air inlet side to exhaust side.
Figure 17 is the worm's eye view of cylinder block 51B.The 1st high heat conduction part 511 has predetermined length along the intake and exhaust direction.Predetermined length setting is that the 1st high heat conduction part 511 can not arrive W/J501,502.Therefore, the heat conduction to the cooling water of circulation among W/J501,502 is restricted to a certain degree from the 1st high heat conduction part 511.But, be not to be limited to this, predetermined length for example can be set at also that the 1st high heat conduction part 511 arrives at least any one party among the W/J501,502.
Figure 18 is the enlarged view of the 1st high heat conduction part 511 peripheries shown in Figure 16.The 1st high heat conduction part 511 specifically comprises slot part 511a and high conducting-heat elements 511b.Slot part 511a is arranged between the cylinder barrel 51a, at upper side D opening.Slot part 511a has the predetermined degree of depth.The predetermined degree of depth can be corresponding with the top of cylinder barrel 51a wall portion and set.Slot part 511a has predetermined length along the intake and exhaust direction.Predetermined length as previously mentioned.
High conducting-heat elements 511b is arranged at slot part 511a.High conducting-heat elements 511b is by supplying with material and with laser beam its fusing being arranged to slot part 511a.High conducting-heat elements 511b is arranged in upper side D and exposes.In addition, fill in the slot part 511a and arrange.High conducting-heat elements 511b has the heat conductivity higher than the mother metal of cylinder block 51B.
Figure 19 is the figure of the 1st concrete example of expression the 2nd high heat conduction part 541.(a) being the overall diagram of cylinder cover cushion 54B, (b) is the cross section enlarged view of the 2nd high heat conduction part 541.In this embodiment, be used in substrate 54a that the part relative with the 1st high heat conduction part 511 be provided with the hole separately, sandwich and keep the 2nd high heat conduction part 541 in the mode of exposing from the hole on the surface.And, constitute the 2nd high heat conduction part 541 with high conducting-heat elements (for example copper coin).
Figure 20 is the figure of the 2nd concrete example of expression the 2nd high heat conduction part 541.In this embodiment, make corresponding with cylinder barrel 51a wall portion and among flanging muscle (bead) 54b that arranges and cylinder barrel 51a between the width of flanging muscle 54b of corresponding part wideer than the flanging muscle 54b of other part.In addition, the part relative with the 1st high heat conduction part 511 makes flanging muscle 54b expose on the surface.That is the coating that, does not have the rubber of higher adiabaticity.And, constitute the 2nd high heat conduction part 541 with the part that flanging muscle 54b is exposed.
The 2nd high heat conduction part 541 has predetermined length along the intake and exhaust direction.It is corresponding that predetermined length can be set at the predetermined length that has with the 1st high heat conduction part 511.
Figure 21 is the enlarged view of the 3rd high heat conduction part 521 peripheries shown in Figure 16.The 3rd high heat conduction part 521 specifically comprises slot part 521a and high conducting-heat elements 521b.Slot part 521a be arranged among the cylinder head 52B with cylinder barrel 51a between relative part, at the face opening relative with upper side D.Slot part 521a has the predetermined degree of depth and has predetermined length along the intake and exhaust direction.The predetermined degree of depth can be set at the degree of depth that does not arrive the W/J503B of branch.But, be not to be limited to this, the predetermined degree of depth also can be set at the degree of depth that arrives the W/J503B of branch.Predetermined length can be corresponding with the predetermined length that the 1st high heat conduction part 511 has and set.
High conducting-heat elements 521b is arranged at slot part 521a.High conducting-heat elements 521b is by supplying with material and with laser beam its fusing being arranged to slot part 521a.High conducting-heat elements 521b is arranged in relative the showing out with upper side D.In addition, fill and arrange to slot part 521a.High conducting-heat elements 521b has the heat conductivity higher than the mother metal of cylinder head 52B.
Figure 22 is the figure that schematically shows the formation method of high conducting-heat elements 511b.Laser cladding (clad) device 90 comprises laser beam supply source 91, convergent lens 92, supply unit 93, oscillator 94 and shroud gas nozzle 95.
Laser beam supply source 91 produces laser beam.Laser beam is for example optical-fiber laser and/or CO
2 Laser.Convergent lens 92 makes laser focusing.93 couples of slot part 511a of supply unit supply with material.Oscillator 94 makes from the laser beam dither of laser beam supply source 91 via convergent lens 92 projections, and the material that supply unit 93 is supplied with shines.Shroud gas nozzle 95 is supplied with the shroud gas that material is blocked with respect to extraneous gas.Shroud gas is for example argon gas.
The material fusing that laser cladding device 90 usefulness laser beams will be supplied with slot part 511a arranges high heat conduction fabricbase by built-up welding (covering) and receives 511b.Material is suitable for the high metallic dust of mother metal of thermal conductivity ratio cylinder block 51B.Thus, can make the heat conductivity height of mother metal of the thermal conductivity ratio cylinder block 51B of high heat conduction part 511b.The mother metal of cylinder block 51B is for example cast aluminium, and material is for example copper powders may.Material also can be the mixture of alloy powder such as Cuprum alloy and/or metallic dust that multiple metalloid powder is formed for example.
When in slot part 511a, high heat conduction part being set with 511b, make cylinder block 51B suitably mobile.Thus, can change the supply position of material and the irradiation position of laser beam.High heat conduction part also can use the coaxial nozzle of the irradiation of the supply that for example can carry out material and laser beam to arrange 511b.In this case, suitably mobile by making coaxial nozzle, can change the supply position of material and the irradiation position of laser beam.
High conducting-heat elements 521b also can similarly arrange with high conducting-heat elements 511b.In this case, material is suitable for the high metallic dust of mother metal of thermal conductivity ratio cylinder head 52B.The mother metal of cylinder head 52B is for example cast aluminium, and the situation of material and high conducting-heat elements 511b is same.
Next the action effect to cooling unit 1C describes.Here, the adjacent cylinder barrel 51a part each other in the top of cylinder barrel 51a wall portion is because the influence of burning becomes the part that becomes high temperature especially easily.Relative therewith, comprise that the cooling unit 1C of the 1st high heat conduction part 511 can promote from the heat conduction between the cylinder barrel 51a.And, promote heat conduction not make from cylinder head 52B like this and especially carry out to the heat conduction of cylinder block 51B with increasing.
Therefore, comprise that the cooling unit 1C of the 1st high heat conduction part 511 compares with cooling unit 1B, can suppress the increase while of cooling loss and then the generation of inhibition detonation.In addition, by the top with cylinder barrel 51a wall portion the predetermined degree of depth that the 1st high heat conduction part 511 has is set accordingly, can promotes suitably from the heat conduction between the cylinder barrel 51a.
In addition, the adjacent cylinder barrel 51a part each other in the top of cylinder barrel 51a wall portion, have become than among the cylinder head 52B with cylinder barrel 51a between the tendency of relative part high temperature.Relative therewith, the cooling unit 1C that comprises the 2nd high heat conduction part 541 can promote between the cylinder barrel 51a to the heat conduction of cylinder head 52B.Therefore, comprise that the cooling unit 1C of the 2nd high heat conduction part 541 and cooling unit 1B compare, can suppress the increase while of cooling loss and then the generation of inhibition detonation.
This point, cylinder cover cushion 54B other parts beyond the 2nd high heat conduction part 541 can suppress the heat conduction to cylinder head 52B from cylinder block 51B.Therefore, the cooling unit 1C that the comprises cylinder cover cushion 54B increase that can suppress cooling loss suppresses the generation of detonation simultaneously suitably.
In addition, comprise simultaneously high heat conduction part 511,541 cooling unit 1C can further promote suitably between the cylinder barrel 51a to the heat conduction of cylinder head 52B.As a result, compare with the situation of any one party in possessing high heat conduction part 511,541, the increase that can suppress cooling loss simultaneously and then suppress the generation of detonation.In addition, promote heat conduction not to be suitable for for not arriving under W/J501,502 the situation at the predetermined length setting that the 1st high heat conduction part 511 is had like this.
In addition, comprise the 2nd high heat conduction part 541 in the high heat conduction part 511,541 at least and comprise the cooling unit 1C of the 3rd high heat conduction part 521, can promote the heat conduction from the 3rd high heat conduction part 521.That is, can make the heat from the 3rd high heat conduction part 521 conduct good.Therefore, compare with the situation that does not comprise the 3rd high heat conduction part 521, can further promote suitably between the cylinder barrel 51a to the heat conduction of cylinder head 52B.As a result, compare with the situation that does not comprise the 3rd high heat conduction part 521, the increase that can suppress cooling loss further suppresses the generation of detonation simultaneously.
In addition, comprise that simultaneously high heat conduction part 511,521,541 cooling unit 1C compare with the situation that does not comprise the 1st high heat conduction part 511, can further promote heat conduction suitably.As a result, compare with the situation that does not comprise the 1st high heat conduction part 511, the increase that can suppress cooling loss further suppresses the generation of detonation simultaneously.
In addition, in cooling unit 1C, the 1st high heat conduction part 511 comprises slot part 511a and high conducting-heat elements 511b.And, when high conducting-heat elements 511b is set in slot part 511a, slot part 511a is supplied with material and with laser beam it melted.Therefore cooling unit 1C can make the fluid-tight engagement of slot part 511a and high conducting-heat elements 511b good.As a result, can promote from the heat conduction between the cylinder barrel 51a suitably.In addition, arrange in the mode of filling high conducting-heat elements 511b to slot part 511a, can promote heat conduction suitably thus.This for the 3rd high heat conduction part 521 too.
In addition, comprise that the cooling unit 1C of the W/J503B of branch compares to the logical situation of backside flow from the front side of motor 50B with for example making cooling water, can guarantee the higher flow velocity of cooling water.And thus, can improve among the cylinder head 52B with cylinder barrel 51a between the cooling of relative part.Therefore, comprise the cooling unit 1C of the W/J503B of branch by for example comprising at least the 2 high heat conduction part 541 in the high heat conduction part 511,521,541 simultaneously, can promote suitably between the cylinder barrel 51a to the heat conduction of cylinder head 52B.
More than, embodiments of the invention are described in detail, but the present invention is not limited to this certain embodiments, in the scope of the main idea of the present invention that technological scheme is put down in writing, can carry out various distortion changes.
For example in the above-described embodiment, for comprising that W/P11,12 situation are illustrated.Yet, needn't be defined in this in the present invention, cooling unit for example also can comprise the public cooling medium force feed portion of force feed cooling medium in air inlet side cooling medium path and the exhaust side cooling medium path.As the variation of cooling unit 1A, expression possesses the i.e. cooling unit 1A ' of 3W/P13 of public cooling medium force feed portion in Figure 23.In this case, compare with comprise W/P11,12 situation separately with respect to W/J501,502, can be made as structure favourable aspect cost.So, each control device that circulates also can replace W/P11,12 and comprise for example 3W/P13.
In addition in the above-described embodiment, to comprising that radiator 12,22 situation are illustrated.Yet, needn't be defined in this in the present invention, cooling unit also can comprise public heat exchanger, and described public heat exchanger comprises public cooling medium entrance part and comprises the 1st and the 2nd cooling medium export department in the different position of circulation distance of cooling medium.As the variation of cooling unit 1A ', expression comprises possessing the i.e. cooling unit 1A ' ' of the 3rd radiator 23 of public heat exchanger in Figure 24.
In this case, the relative 23a of coolant outlet portion that shortens of circulation distance of cooling water among the 1st 23a of coolant outlet portion and the 2nd 23b of coolant outlet portion can be connected with air inlet side W/J501, and the circulation of cooling medium is connected with exhaust side W/J502 apart from the elongated relatively 23b of coolant outlet portion.Comprise that the cooling unit 1A ' ' of the 3rd radiator 23 compares with comprise radiator 12,22 cooling unit 1A ' separately with respect to W/J501,502, can be made as structure favourable aspect cost.
In addition, the cooling medium force feed portion to air inlet side cooling medium path and/or exhaust side cooling medium path force feed cooling medium also can be for example mechanical W/P.In this case, by comprise that further bypass is in the bypass pipe arrangement of air inlet side cooling medium path and/or exhaust side cooling medium path and the bypass control valve (BCV) that the circulation of the cooling medium that circulates is controlled in the bypass pipe arrangement, can permit, forbid the circulation of the cooling medium that in air inlet side cooling medium path and/or exhaust side cooling medium path, circulates, perhaps change flow.Therefore, each control device that circulates also can replace W/P11 for example, 12 and for example comprise the 3W/P13 that is made of mechanical W/P and above-mentioned bypass pipe arrangement, bypass control valve (BCV).
Description of reference numerals
1W/P 11
2W/P 21
The 1st control valve 31
The 2nd control valve 32
Air inlet side W/J 501
Exhaust side W/J 502
The W/J 503A of branch, 503B
ECU 70A、70B
Claims (6)
1. the cooling unit of a motor wherein, comprises motor and the 1st Status Change portion, and described motor possesses cylinder block and cylinder head and is provided with air inlet side cooling medium path, exhaust side cooling medium path and branch's cooling medium path,
Described air inlet side cooling medium path is arranged on the part of the air inlet side in the described cylinder block along the orientation of a plurality of cylinder barrels that are arranged at described cylinder block;
Described exhaust side cooling medium path, independent and be arranged on the part of the exhaust side in the described cylinder block along the orientation of described a plurality of cylinder barrels with respect to described air inlet side cooling medium path;
Described branch cooling medium path, from the precalculated position branch of described air inlet side cooling medium path and from the part setting of described air inlet side cooling medium path via part exhaust side in described cylinder head of the air inlet side the described cylinder head, and then the part of the exhaust side in described cylinder head is along the orientation setting of described cylinder barrel;
Described the 1st Status Change portion can make circulation status conversion between following state of cooling medium: make the state that circulates in the described air inlet side cooling medium path of cooling medium in described air inlet side cooling medium path and described branch cooling medium path; With the state that cooling medium is circulated in described air inlet side cooling medium path and described branch cooling medium path.
2. the cooling unit of motor according to claim 1, wherein:
Also comprise the 1st circulation control device, the 1st circulation control device has described the 1st Status Change portion, running state at described motor is under the situation of slow-speed of revolution high load, cooling medium is circulated in described air inlet side cooling medium path and described exhaust side cooling medium path, and make in the described air inlet side cooling medium path of cooling medium in described air inlet side cooling medium path and described branch cooling medium path and circulate.
3. the cooling unit of motor according to claim 1 and 2, wherein:
Also comprise the 2nd circulation control device, the 2nd circulation control device has described the 1st Status Change portion, running state at described motor is under the situation of light load, forbids that cooling medium circulates in described air inlet side cooling medium path and described exhaust side cooling medium path.
4. according to the cooling unit of any described motor of claim 1 to 3, wherein, also comprise:
Heat exchanger, it carries out heat exchange between air and the cooling medium that circulates in described exhaust side cooling medium path;
Thermal accumulator, it is stored in cooling medium and the insulation of circulating in the described exhaust side cooling medium path;
The 2nd Status Change portion, it can make the state that the circulation status of cooling medium circulates and make conversion between the state that cooling medium circulates in described thermal accumulator in the described heat exchanger that makes cooling medium in described heat exchanger and described thermal accumulator; With
The 3rd circulation control device, it has described the 2nd Status Change portion, in the running state of described motor when being cold machine operation or under the situation during engine start, cooling medium is circulated in described exhaust side cooling medium path, and make in the described thermal accumulator of cooling medium in described heat exchanger and described thermal accumulator and circulate.
5. according to the cooling unit of any described motor of claim 1 to 4, wherein:
Also comprise high heat conduction part, it is arranged at cylinder barrel part each other adjacent in described a plurality of cylinder barrel in described cylinder block, exposes at the upper side of described cylinder block, and has the heat conductivity higher than the mother metal of described cylinder block.
6. the cooling unit of motor according to claim 5, wherein:
Described high heat conduction part comprises slot part and high conducting-heat elements;
Described slot part is arranged at cylinder barrel part each other adjacent in described a plurality of cylinder barrel in described cylinder block, in described upper side upper shed, and have the predetermined degree of depth;
Described high conducting-heat elements makes it expose at described upper side by to described slot part supply material and with laser beam its fusing being arranged in the described slot part, described high conducting-heat elements has the heat conductivity higher than the mother metal of described cylinder block.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/071139 WO2012070149A1 (en) | 2010-11-26 | 2010-11-26 | Cooling device for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103282617A true CN103282617A (en) | 2013-09-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800702733A Pending CN103282617A (en) | 2010-11-26 | 2010-11-26 | Cooling device for engine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20130247847A1 (en) |
| EP (1) | EP2644860A4 (en) |
| JP (1) | JP5527427B2 (en) |
| CN (1) | CN103282617A (en) |
| WO (1) | WO2012070149A1 (en) |
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| CN105569794A (en) * | 2014-10-29 | 2016-05-11 | 现代自动车株式会社 | Engine system having coolant control valve |
| CN106246392A (en) * | 2015-06-05 | 2016-12-21 | 丰田自动车株式会社 | The control device of internal combustion engine |
| CN112648099A (en) * | 2019-10-11 | 2021-04-13 | 广州汽车集团股份有限公司 | Cylinder head assembly and engine comprising same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112013005687T8 (en) * | 2012-11-28 | 2015-09-24 | Cummins Inc. | Engine with cooling system |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2012070149A1 (en) | 2014-05-19 |
| EP2644860A1 (en) | 2013-10-02 |
| EP2644860A4 (en) | 2014-05-07 |
| US20130247847A1 (en) | 2013-09-26 |
| JP5527427B2 (en) | 2014-06-18 |
| WO2012070149A1 (en) | 2012-05-31 |
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Application publication date: 20130904 |