CN102639835A - Cooling device for engine - Google Patents
Cooling device for engine Download PDFInfo
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- CN102639835A CN102639835A CN2009801626715A CN200980162671A CN102639835A CN 102639835 A CN102639835 A CN 102639835A CN 2009801626715 A CN2009801626715 A CN 2009801626715A CN 200980162671 A CN200980162671 A CN 200980162671A CN 102639835 A CN102639835 A CN 102639835A
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- Prior art keywords
- cooling
- cylinder
- unit
- cylinder cap
- control valve
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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
- 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
- F02F1/002—Integrally formed cylinders and cylinder heads
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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
- F02F11/00—Arrangements of sealings in combustion engines
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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
- F01P2003/024—Cooling 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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/027—Cooling cylinders and cylinder heads in parallel
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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) comprises an engine (50A) provided with: a cylinder block (51); a cylinder head (52A); and a gasket (54) which is provided between the cylinder block (51) and the cylinder head (52A) and which has a high heat conduction section (54a) having higher heat conductivity than the remaining portion to permit heat transfer between the upper part of the cylinder (51a) and the cylinder head (52A), the high heat conduction section (54a) being provided with a portion (W/J521eA) in the peripheral portion thereof. The cooling device (1A) also comprises an ECU (70A) which performs control for changing the state of the flow of cooling water which is caused to flow to the portion (W/J521eA) according to the operating state of the engine.
Description
Technical field
The present invention relates to the cooling unit of motor.
Background technique
In the past, in motor, cooled off by cooling water usually.In addition, in the past, knownly in motor, particularly spark-ignited internal combustion engine, be easy to generate pinking (knocking) at the peripheral part of firing chamber (tail gas zone).In this; Suppress the technology that pinking produces as being used to, for example in patent documentation 1, disclose the cooling unit of following internal-combustion engine: dispose the conducting-heat elements that constitutes by the material higher than cylinder body heat conductivity on cylinder liner top and between than the low position of this cylinder liner upper temp.In addition, for example in patent documentation 2, the cooling structure of following internal-combustion engine being disclosed: between cylinder upper surface and cylinder cap lower surface, clamps by being and concentric shape of cylinder and inner peripheral surface exposes in the firing chamber and the thermal conductivity ratio cylinder cover gasket is high ring-shaped member.
The existing technology document
Patent documentation
Patent documentation 1: real opening put down the 6-43241 communique;
Patent documentation 2: the spy opens the 2009-144652 communique.
Summary of the invention
Invent problem to be solved
But shown in figure 13, in motor, particularly spark-ignited internal combustion engine, the heat that exhaust loss and cooling loss etc. is not used for effective merit produces a lot.And the reduction that occupies the cooling loss of the whole larger proportion of energy loss is very important factor for the raising of the thermal efficiency (fuel economy).But reduction cooling loss, effectively utilization heat also are not easy, and this becomes the obstacle that the thermal efficiency improves.
As the reason that cooling loss is difficult to reduce, can enumerate, for example general motor does not become the structure of the state locally variable that makes the heat transmission.That is, can enumerate, in general motor, on constituting, be difficult to the position of needs cooling is cooled off with the degree of necessity.Particularly, when being variable, the mechanical type water pump that generally drives through the output by motor to change according to engine speed the flow of cooling water at the state of the heat transmission that makes motor.Yet, with regard to the water pump of the flow of integrally regulating cooling water,, can not make the transmit mode locally variable of heat according to engine operating status even under the situation of the variable variable water pump of use traffic.
In addition, when reducing cooling loss, also can consider for example to improve the adiabaticity of motor.And, under this this situation, can such expectation shown in figure 14 significantly reduce cooling loss.Yet, in this case, improve the adiabaticity of motor, and cause the inner wall temperature of firing chamber to rise simultaneously.And, in this case, occur because the temperature of mixed gas rises thereupon, and cause this problem of pinking.
On the other hand, in the public technology of above-mentioned patent documentation 1,2, wait the generation that suppresses pinking to cylinder cap through the heat dissipation that makes the tail gas zone.But, in these public technologies, give free rein to and carry out the transmission of heat.That is, in these public technologies, from the raising that realizes the thermal efficiency, suppressing the viewpoint of the generation of pinking, be considered to differ carry out surely that suitable heat transmits aspect existing problems.
So; The present invention makes in view of the above problems and develops, and its objective is the variable partly cooling unit of motor that suppresses the generation of pinking and then can take into account reduction and the pinking performance of cooling loss of the state that heat transmission that can be through making motor with reasonable manner is provided.
The technological scheme that is used to deal with problems
The present invention who is used to address the above problem; A kind of cooling unit of motor; It is characterized in that possessing: motor, it possess cylinder body, cylinder cap and be arranged at said cylinder body and said cylinder cap between liner; This liner has higher and can allow that the cylinder upper of said cylinder body and the heat transmission of the heat transmission between said cylinder cap allow portion than other part heat conductivity, and the said heat transmission in said cylinder cap allows that the periphery of portion is provided with the cooling medium path; And control unit, it is according to engine operating status, is used to change the control at the circulation status of the cooling medium of said cooling medium path circulation.
In addition; The present invention preferably; Said control unit is following structure: at engine operating status is under the situation of the high load of the slow-speed of revolution at least in slow-speed of revolution high load and the high rotating speed high load; Be used for through changing circulation status, and promote the control of transmitting to the heat of said cylinder cap from said cylinder upper of allowing via said heat transmission that portion carries out at the cooling medium of said cooling medium path circulation.
In addition, the present invention preferably constitutes, be provided with the transmission of said heat and allow portion, said heat transmission allow portion with the shape of cross section L font surround in the said liner with said cylinder body mutually in the face of and be positioned at the part of the combustion chamber side of said motor.
In addition, the present invention preferably constitutes, and allows that as be provided with said heat transmission with the parts of said liner split portion is provided with.
In addition; The present invention preferably constitutes, path wall in said cooling medium path, that be positioned at said cylinder body side; Be provided with jog, this jog can the variation according to flow velocity produce peeling off of cooling medium stream in the scope of the Peak Flow Rate of cooling medium.
In addition; The present invention preferably; Constitute; Also possess the cooling capacity regulation unit, the cooling capacity ground that this cooling capacity regulation unit can not suppress said cylinder body suppresses the cooling capacity of said cylinder cap, and said control unit is also through controlling the control that said cooling capacity regulation unit is used to suppress the cooling capacity of said cylinder cap.
The invention effect
According to the present invention, the variable partly generation that suppresses pinking of state of heat transmission that can be through making motor with reasonable manner, and then can suitably take into account the reduction and the pinking performance of cooling loss.
Description of drawings
Fig. 1 is the figure of cooling unit (the being designated hereinafter simply as cooling unit) 1A that schematically representes motor.
Fig. 2 is the figure that schematically representes motor 50A about a cylinder with section.
Fig. 3 is the figure that schematically representes ECU70A.
Fig. 4 is the figure that schematically representes the classification of engine operating status.
Fig. 5 schematically representes the figure to the heat conduction of cylinder cap 52A from cylinder 51a top that carries out via high heat conduction part 54a with arrow F1.
Fig. 6 be with arrow F2 schematically represent via high heat conduction part 54a carry out from the figure of cylinder cap 52A to the heat conduction on cylinder 51a top.
Fig. 7 is the figure that representes the work of ECU70A with flow chart.
Fig. 8 is expression and the heat conductivity of the corresponding firing chamber 55 of crankshaft angles and the figure of surface area ratio.
Fig. 9 is the figure of the thermal efficiency of expression and the corresponding cooling unit 1A of load.Have again, in Fig. 9 about except that do not possess flow control valve 14 this point in order to compare, the situation of the cooling unit 1X identical with cooling unit 1A essence representes.
Figure 10 is the figure that schematically representes cooling unit 1B.
Figure 11 is the figure that schematically representes motor 50B about a cylinder with section.
Figure 12 is the figure that representes the work of ECU70B with flow chart.
Figure 13 is the figure that the general thermally equilibrated detail of spark-ignited internal combustion engine is represented respectively about the situation of full-power situation and sub load.
Figure 14 is the figure that the inner wall temperature of cylinder and hot transmittance are represented respectively about the situation of common structure and the situation that has improved adiabaticity.Have again, in Figure 14,, the situation of the wall thickness that has carried out cylinder increases and material changes the situation air adiabatic high with having carried out adiabaticity is represented respectively as the situation that has improved adiabaticity.In addition, expression is provided with the situation of the general motor of the cooling water circulating path that makes cooling water overcome the single system that circulates on gravity ground to cylinder cap from inferior part of the cylinder block as common structure.
Embodiment
Specify the mode that is used for embodiment of the present invention in the lump with accompanying drawing below.
Embodiment 1
Cooling unit 1A shown in Figure 1 carries on not shown vehicle, and possesses: water pump (below be called W/P) 11; Radiator 12; Thermostat 13; Flow control valve 14; Motor 50A; With append flow control valve 60.W/P11 is cooling medium force feed unit, becomes as the cooling water force feed of cooling medium and make the variable variable W/P of flow of the cooling water of force feed.The cooling water of W/P11 force feed is supplied with to motor 50A.
In this, in cooling unit 1A, be formed with a plurality of cooling water circulating paths.
As the cooling water circulating path, for example having group go into to have the circulating path of cylinder body side W/J511 is cylinder body side circulating path C1.The cooling water that in this cylinder body side circulating path C1, circulates after being ejected from W/P11, circulates in cylinder body side W/J511, gets back to W/P11 through thermostat 13 or through radiator 12 and thermostat 13 again.Radiator 12 is heat exchangers, cools off cooling water through between cooling water that circulates and air, carrying out heat exchange.Thermostat 13 switches the circulation path that is communicated with W/P11 from inlet side.Particularly, thermostat 13 makes the circulation path of bypass radiator 12 become connected state under the situation of the discontented predetermined value of cooling water temperature, is to make the circulation path of circulation in radiator 12 become connected state under the situation more than the predetermined value at cooling water temperature.
In addition, as the cooling water circulating path, for example having group go into to have the circulating path of cylinder cap side W/J521A is cylinder cap side circulating path C2.The cooling water that in this cylinder cap side circulating path C2, circulates; After being ejected from W/P11; In cylinder cap side W/J521A, circulating, get back to W/P11 through thermostat 13 or through radiator 12 and thermostat 13 again through flow control valve 14 or through appending flow control valve 60.
In addition, the flow control valve 14 that as above-mentioned, is provided with becomes the cooling capacity regulation unit that the cooling capacity ground that can not suppress cylinder body 51 suppresses the cooling capacity of cylinder cap 52A.Particularly; Flow control valve 14 becomes following cooling capacity regulation unit: under the situation of the cooling capacity of cooling capacity with the cylinder body 51 when making the high rotating speed high load of cooling water in cylinder body 51 and cylinder cap 52A circulation and cylinder cap 52A, the cooling capacity ground that can not suppress cylinder body 51 for this cooling capacity suppresses the cooling capacity of cylinder cap 52A.
Have again; The flow control valve 14 that as above-mentioned, is provided with becomes following cooling capacity regulation unit: under the situation of the flow of having regulated the cooling water that in cylinder cap side W/J521A, circulates with the cooling capacity of inhibition cylinder cap 52A, the flow of the cooling water that can regulate circulates in cylinder body side W/J511 is to improve the cooling capacity of cylinder body 51.
In cooling unit 1A, the cooling water that in cylinder cap side circulating path C1, circulates after by the W/P11 force feed, can not circulate in cylinder cap side W/J521A in during till circulation primary.In addition, in cooling unit 1A, the cooling water that in cylinder cap side circulating path C2, circulates after by the W/P11 force feed, can not circulate in cylinder body side W/J511 in during till circulation primary.That is, in cooling unit 1A, cylinder body side W/J511 and cylinder cap side W/J521A are organized in mutually different cooling medium circulating path.
Then, more specifically explain about motor 50A.As shown in Figure 2, be formed with cylinder 51a at cylinder body 51.Be provided with piston 53 at cylinder 51a.At cylinder body 51, be fixed with cylinder cap 52A via liner 54.Cylinder 51a, cylinder cap 52A and piston 53 formation firing chambers 55.At cylinder cap 52A, be formed with to the suction port 52a of firing chamber 55 guiding air inlets and from the firing chamber 55 discharge combustion gas relief opening 52b.At cylinder cap 52A, 55 top cardinal principle middle ground is provided with spark plug 56 towards the firing chamber.
High hot transfer part 54a, part and other parts of being surrounded by the hot transfer part 54a of height form liner 54.But, being not limited to this, high hot transfer part 54a also can be arranged to the parts with liner 54 splits.In this, high hot transfer part 54a for example runs through liner 54 and heat between tolerable cylinder 51a top and cylinder cap 52A is transmitted the parts (parts of for example a plurality of pin shapes) of the split that ground is provided with.Even under situation about as above-mentioned, being provided with, also can between cylinder body 51, cylinder cap 52a, carry out heat transmission.Portion is allowed in the heat transmission that high hot transfer part 54a becomes the heat transmission between tolerable cylinder 51a top and cylinder cap 52A.
Particularly, cylinder body side W/J511 possesses the part W/J511a as first portion's cooling medium path.Particularly, part W/J511a becomes the cooling medium path in the periphery setting of cylinder 51a.The upstream portion of part W/J511a, from suitably cooling off the viewpoint of air inlet, for example, the part that can blow to the air inlet in the inflow cylinder in the wall of cylinder 51a is provided with accordingly.In this, motor 50A becomes in the present embodiment in cylinder and to generate the motor that forward rolls stream, and flowing into the part that the air inlet in the cylinder blows to is the wall top of cylinder 51a and the part of exhaust side.
Particularly, cylinder cap side W/J521A possesses a plurality of part W/J521a, part W/J521b, part W/J521c, part W/J521d and the part W/J521eA as second portion cooling medium path.Respectively; Part W/J521a becomes the cooling medium path in the periphery setting of suction port 52a; Part W/J521b becomes the cooling medium path in the periphery setting of relief opening 52b, and part W/J521c becomes the cooling medium path in the periphery setting of spark plug 56.In addition, part W/J521d becomes and is used to cool off between suction and exhaust ports 52a, the 52b and/or other parts and the cooling medium path that is provided with.Part W/J521eA becomes the cooling medium path in the periphery setting of the hot transfer part 54a of height.Organize the different cooling system of five systems of cylinder cap side W/J521A formation respectively individually from part W/J521a to part W/J521eA.And respectively, flow control valve 14 is provided with part W/J521a to 521d particularly accordingly, appends flow control valve 60 and is provided with accordingly with part W/J521eA particularly.
Have, cooling unit 1A possesses ECU shown in Figure 3 (Electronic Control Unit: 70A electronic control unit) again.ECU70A possesses microcomputer and the imput output circuit 75,76 that is made up of CPU71, ROM72, RAM73 etc.Connect via bus 74 between these structures are mutual.Be electrically connected with at ECU70A: be used for the rotating speed of detection of engine 50A crankshaft angle sensor 81, be used to detect the airmeter 82 that gets into air quantity, various sensors, the Switch such as cooling-water temperature sensor 84 that is used to detect the pedal jaw opening sensor 83 of pedal aperture and detects the temperature of cooling water.In this, the load of motor 50A is detected by ECU70A according to the output of airmeter 82 and/or pedal jaw opening sensor 83.In addition, be electrically connected with various controlling object such as W/P11, flow control valve 14 and partial discharge modulating valve 61 to 64 at ECU70A.
ROM72 is the structure that is used to store the program of recording and narrating the various processing that CPU71 carries out and/or mapping (enum) data etc.CPU71 is based on the ROM72 program stored, and lateral dominance is carried out with the limit, territory, temporary storage aera of RAM73 and handled as required, thereby on function, realizes various control units, identifying unit, detection unit and/or calculate unit etc. through ECU70A.
In this, through ECU70, for example on function, realize control unit, this control unit is used to adjust the control of the cooling capacity of cylinder cap 52A.
Particularly, control unit is embodied as, and is under the situation of high load at engine operating status, is used to suppress the control of the cooling capacity of cylinder cap 52A.
In addition, at this moment, more specifically, control unit is embodied as, and is under the situation of slow-speed of revolution high load at engine operating status, is used to suppress the control of the cooling capacity brought into play based on cylinder body side W/J521A through control flow rate modulating valve 14.
In addition, control unit is embodied as, and the state that is used to make the heat of motor 50A to transmit according to engine operating status is variable partly control.
Particularly, control unit is embodied as, and being used to make the cylinder 51a top of carrying out via the hot transfer part 54a of height, the state of heat transmission between cylinder cap 52A according to engine operating status is variable control.
In this; Particularly, control unit is embodied as, engine operating status be high load (particularly; Slow-speed of revolution high load and high rotating speed high load) situation under, be used to promote the control of carrying out via the hot transfer part 54a of height of transmitting to the heat of cylinder cap 52A from cylinder 51a top.
In addition; According to engine operating status; When the state that is used to make the cylinder 51a top of carrying out via the hot transfer part 54a of height, the heat transmission between cylinder cap 52A is variable control; Particularly, control unit is embodied as, through control W/P11 and/or append the control that flow control valve 60 is used for changing the circulation status of the cooling water that circulates at part W/J521eA.
In this, control unit is embodied as, and is under the situation of high rotating speed high load at engine operating status, is that the situation of slow-speed of revolution high load is compared with engine operating status, the control that the flow of the cooling water that in part W/J521eA, circulates is increased.
Have, control unit is embodied as again, except engine operating status is the situation of high load, and the control that under other operating conditions, also is used to make the running of motor 50A to set up.
In this, particularly, engine operating status except the rotating speed of motor 50A and load, also when whether being cold car running or when whether being engine start, and is categorized as six subregion D1 to D6 shown in Figure 4.And control unit is set the requirement that should satisfy from each institute of subregion D1 to D6 as such shown in following particularly when controlling, and confirms to be used for to satisfy the control policy of the requirement of setting.
At first, be under the situation with the corresponding idling mode of subregion D1 at engine operating status, set air inlet these two requirements of exhaust-gas temperature rising that the velocity of combustion that caused increases and be used for catalyst activity that heat up.In addition, confirm the intensification on corresponding suction port 52a and cylinder 51a top and these two control of the intensification policy of relief opening 52b.
In this, when realizing the intensification of suction port 52a, for example, can flow control valve 14 cut out or open with little aperture.
In addition, when realizing the intensification on cylinder 51a top, for example, W/P11 is stopped or driving and/or will append flow control valve 60 and close with low spray volume.
In addition, when realizing the intensification of relief opening 52b, for example, can flow control valve 14 cut out or open with little aperture.
Having, is under the situation with the corresponding light load of subregion D2 at engine operating status again, is set with the thermal efficiency and improves these two requirements of velocity of combustion increase that (cooling loss reductions) and air inlet heat up and caused.In addition, confirm the thermal insulation of corresponding cylinder cap 52A and these two control of the intensification policy on suction port 52a and cylinder 51a top.
In this, when realizing cylinder cap 52A adiabatic, for example, can flow control valve 14 cut out or open with little aperture.
In addition, when realizing the intensification of suction port 52a, for example, can flow control valve 14 cut out or open with little aperture.
In addition, when realizing the intensification on cylinder 51a top, for example, W/P11 is stopped or driving or will append flow control valve 60 and close with low spray volume.
Having, is under the situation with the corresponding slow-speed of revolution high load of subregion D3 at engine operating status again, and the reduction and the thermal efficiency that are set with pinking improve (cooling loss reduction) these two requirements.In addition, confirm the cooling on corresponding suction port 52a and cylinder 51a top and these two control of the thermal insulation policy of cylinder cap 52A.
In this, when realizing the cooling of suction port 52a, for example, can open with flow control valve 14 standard-sized sheets or with big aperture.
In addition, when realizing the cooling on cylinder 51a top, for example, can W/P11 be driven with maximum spout output or the high spray volume that is suitable for when the engine running.Have again, when realizing the cooling on cylinder 51a top, for example, can open appending flow control valve 60.
When realizing cylinder cap 52A adiabatic, for example, can flow control valve 14 cut out or open with little aperture.
Having, is under the situation with the corresponding high rotating speed high load of subregion D4 at engine operating status again, is set with that reliability is guaranteed and these two requirements of the reduction of pinking.In addition, confirm around the corresponding spark plug 56, between suction and exhaust ports 52a, 52b with the cooling of relief opening 52b and these two control of the cooling policy of suction port 52a.
In this, around realizing spark plug 56, between suction and exhaust ports 52a, 52b, during with the cooling of relief opening 52b, for example, can make flow control valve 14 be standard-sized sheet.
In addition, when realizing the cooling of suction port 52a, for example, can make flow control valve 14 be standard-sized sheet.
On the other hand, for this requirement of reduction of pinking, except the cooling of suction port 52a, also for example also can realize the cooling on cylinder 51a top.With respect to this, when realizing the cooling on cylinder 51a top, for example, can make and append flow control valve 60 is standard-sized sheet.
In addition, about W/P11, for example, the maximum spout output that is suitable for when can be used on engine running drives.
In addition, with the corresponding engine cold of subregion D5 workshop the time, be set with the velocity of combustion that engine warming up promotes and air inlet heats up to be caused and improve these two requirements.In addition, confirm that the heat transmission of corresponding cylinder cap 52A promotes, reaches these two control of the intensification policy on suction port 52a and cylinder 51a top.
In this, when the heat transmission that realizes cylinder cap 52A promotes, consider the contribution of the being heated big this point of cylinder cap 52A place, for example, can flow control valve 14 be opened cooling water.
In addition, when realizing the intensification of suction port 52a, for example, can flow control valve 14 cut out or open with little aperture.
In addition, when realizing the intensification on cylinder 51a top, for example, W/P11 is stopped or driving and/or will append flow control valve 60 and close with low spray volume.
In addition, with the corresponding engine start of subregion D6 the time, the set point bad temper improves and fuel gasification promotes these two requirements.In addition, confirm corresponding suction port 52a intensification, and spark plug 56 around and these two control of the intensification policy on cylinder 51a top.
In this, when realizing the intensification of suction port 52a, for example, can or append flow control valve 61 and close or open flow control valve 14 with little aperture.
In addition, when the intensification around the realization spark plug 56, for example, can or append flow control valve 63 and close or open flow control valve 14 with little aperture.
In addition, when realizing the intensification on cylinder 51a top, for example, W/P11 is stopped or driving and/or will append flow control valve 60 and close with low spray volume.
With respect to this, in cooling unit 1A, consider whole compatibility of controlling and/or simplification etc.; Control unit is embodied as; For W/P11, be used to drive the control of W/P11 basically according to the rotating speed of motor 50A, make that the high more then spray volume of rotating speed is many more.On the other hand, be embodied as, for flow control valve 14 and append flow control valve 60, also can specifically carry out the control shown in following.
Promptly; Control unit is embodied as; At engine operating status is that situation, engine operating status with the corresponding idling mode of subregion D1 is during with the situation of the corresponding light load of subregion D2, with the corresponding engine cold car of subregion D5 the time with the corresponding engine start of subregion D6, is used to make the control that flow control valve 14 cuts out and is used to make append the control that flow control valve 60 cuts out.
In addition; Control unit is embodied as, and is under the situation with the corresponding slow-speed of revolution high load of subregion D3 at engine operating status, is used for flow control valve 14 cuts out; Perhaps suppressing the control that cooling water suppresses the cooling water at cylinder cap 52A place in cylinder cap 52A circulation the mode (below be called the suppressor mode that seethes with excitement) of boiling opens it; And be used for appending the control (particularly, being used for the control that it is half-open here) that flow control valve 60 is opened.
In addition; Control unit is embodied as; At engine operating status is under the situation with the corresponding high rotating speed high load of subregion D4; Be used to make the control of flow rate regulating valve 14 standard-sized sheets, and be used to make the control (being specially the control that is used to make its standard-sized sheet here) of appending flow control valve 60 and opening.
In this; At engine operating status is under the situation with the corresponding slow-speed of revolution high load of subregion D3; When being used for the control of flow control valve 14 being opened with the boiling suppressor mode; Particularly, control unit for example can open flow control valve 14 with the necessary minimal aperture of the boiling that can suppress cooling water under all conditions; Maybe can detect or infer the temperature of the cooling water that in cylinder cap 52A, circulates, and come off and on flow control valve 14 to be opened according to the temperature of this cooling water; Or can with desired speed with on flow control valve 14 is opened, or the like.Thus, when suppressing the cooling capacity of cylinder cap 52A, can in the boiling that suppresses cooling water, suppress flow control valve 14 and open to more than necessity.
And in cooling unit 1A, based on the control of control unit, flow control valve 14 makes the flow of the cooling water that in cylinder cap 52A, circulates descend as above-mentioned in subregion D3, thereby the flow of the cooling water that in motor 50A, circulates is descended.
And, in cooling unit 1A, not to suppress the circulation of cooling water under the situation of standard-sized sheet at flow control valve 14, thereby suppress the cooling capacity of cylinder cap 52A to cylinder cap 52A.In this, in cooling unit 1A, more specifically,, suppress the cooling capacity of cylinder cap 52A making flow control valve 14 close or make under the situation that flow control valve 14 opens with the boiling suppressor mode.
In addition; In cooling unit 1A; Control based on control unit; W/P11 and append flow control valve 60 and as above-mentioned, change the flow of the cooling water that in part W/J521eA, circulates is variable thereby make the state of the heat transmission of between cylinder 51a top and cylinder cap 52A, carrying out, and the state that the heat of motor 50A is transmitted is variable for partly.
In this; In cooling unit 1A; The W/P11 of the flow of the cooling water that can regulate circulates in part W/J521eA and append flow control valve 60 and become following hot transmit mode changing cell respectively: through the state that makes the heat transmission of between cylinder 51a top and cylinder cap 52A, carrying out is variable, and the state that the heat of motor 50A is transmitted is variable for partly.
And; In cooling unit 1A; Control unit is used to make the situation of appending the control that flow control valve 60 opens (promptly, in the control of the circulation of the cooling water that is used to allow part W/J521eA in subregion D3 and subregion D4; Make through there being high hot transfer part 54a to carry out the situation that heat is transmitted to cylinder cap 52A from cylinder 51a top) under, the temperature of the periphery of branch W/J521eA is descended than the temperature on cylinder 51a top.And, such shown in arrow F1 among Fig. 5 in this case, promote the heat transmission to cylinder cap 52A from cylinder 51a top via the hot transfer part 54a of height.
On the other hand; In cooling unit 1A; Control unit is used to make under the situation of appending the control that flow control valve 60 cuts out (promptly, be used to make the situation of the control that the circulation of the cooling water of part W/J521eA stops) in subregion D1, D2, D5 and subregion D6, between the periphery of part W/J521eA and cylinder 51a top, carries out and the corresponding heat of their temperature difference is transmitted.In this, in this case, for example; When the engine cold car; Becoming the state that cylinder cap 52A receives a large amount of heat through flow control valve 14 cuts out, its result is under the situation of the temperature of the periphery of part W/J521eA than the increase in temperature on cylinder 51a top; Such shown in arrow F2 among Fig. 6, particularly exhaust side promote via the hot transfer part 54a of height from the heat transmission of cylinder cap 52A to cylinder 51a top.
In addition; In this case; Control unit also can be opened or close off and on little aperture through for example appending flow control valve 60, controls to append flow control valve 70 and make the temperature on temperature and cylinder 51a top of periphery of part W/J521eA equate; Making periphery and the cylinder 51a of part W/J521eA is thermal equilibrium state, between them, does not carry out heat thus and transmits or be suppressed at the heat transmission of carrying out between them.On the other hand, do not carry out heat between part W/J521eA, cylinder 51a when transmitting or being suppressed at the heat of carrying out between them and transmitting making, for example can between part W/J521eA, cylinder 51a, produce heat insulating function yet.In this case, for example, do not promote the heat transmission to cylinder cap 52A, can realize the intensification on cylinder 51a top thus from cylinder 51a top via the hot transfer part 54a of height.
Have, in cooling unit 1A, control unit is embodied as the compatibility of having considered whole control and/or the control of simplification again.But; Be not limited to this; Control unit can be embodied as, and for example comes suitably to control W/P11, flow control valve 14 and appends flow control valve 60 according to above-mentioned control policy, thereby carry out the above-mentioned control Different control with compatibility and/or the simplification of having considered whole control etc.Thus, the running of motor 50A is suitably set up.
Then, use flow chart shown in Figure 7 that the processing of carrying out with ECU70A is described.ECU70A judges when whether being engine start (step S1).If judge that certainly ECU70A begins the driving (step S3) of W/P11.Then, ECU70A makes flow control valve 14 close and will append flow control valve 60 and closes (step S21A).On the other hand, if be to negate to judge in step S1, then ECU70A judges when whether being the engine cold car (step S5).Whether be whether engine cold Che Shike is that predetermined value (for example 75 ℃) is with the judgement of getting off through for example coolant water temperature.If be sure judgement, then advance to step S21A in step S5.On the other hand, negate judgement, the then rotating speed of ECU70A detection of engine 50A and load (step S11) if be in step S5.
Then, ECU70A judges and detected rotating speed and the corresponding subregion of load (from step S12 to S14).Particularly,, then advance to step S21,, then advance to step S21 from the sure judgement of step S13 if corresponding subregion is subregion D2 from the sure judgement of step S12 if corresponding subregion is subregion D1.On the other hand, if corresponding subregion is subregion D3, then advance to step S31A from the sure judgement of step S14.At this moment, ECU70A makes flow control valve 14 close or open with the boiling suppressor mode, and makes and append flow control valve 60 half-open (step S31A).In addition, if corresponding subregion is subregion D4, then advance to step S41A from the negative judgement of step S14.At this moment, ECU70A makes flow control valve 14 standard-sized sheets, and makes and append flow control valve 60 standard-sized sheets (step S41A).
Then, about the action effect explanation of cooling unit 1A.Here, heat conductivity and the surface area ratio with the corresponding firing chamber 55 of the crankshaft angles of motor 50A is that kind shown in Figure 8.As shown in Figure 8, can know that heat conductivity is higher near compression stroke top dead center.And,, can know that the surface area ratio of cylinder cap 52A and piston 53 increases near the compression stroke stop about the surface area ratio.Therefore,, can know that the temperature of cylinder cap 52A is big to its influence power about cooling loss.On the other hand, about pinking, can know that it exists with ... compression end temperature, and the surface area ratio of cylinder 51a is big in the air inlet compression stroke that compression end temperature is exerted an influence.Therefore,, can know that the temperature of cylinder 51a is big to its influence power about pinking.
With respect to this, in cooling unit 1A,, be under the situation of slow-speed of revolution high load at engine operating status according to this knowledge, make flow control valve 14 close or open with the boiling suppressor mode.And, through being limited in the flow of the cooling water that circulates among the cylinder body side W/J521A, can suppressing the cooling capacity of cylinder cap 52A, thereby can reduce cooling loss thus.
On the other hand, in this case, worry the generation of pinking.With respect to this, in cooling unit 1A,, be limited in the flow of the cooling water that circulates among the cylinder cap side W/J521A through controlling the flow control valve 14 that the cooling capacity ground that can not suppress cylinder body 51 suppresses the cooling capacity of cylinder cap 52A.Therefore, in cooling unit 1A, can keep the cooling of cylinder 51a thus, thereby also can suppress the generation of pinking.
That is, in cooling unit 1A, can simultaneously,, also can suppress the generation of pinking through the variable partly thermal insulation (reduction of cooling loss) that realizes cylinder cap 52A of state that heat is transmitted through realizing the cooling of cylinder body 51.And, through reduction and the pinking performance of as above-mentioned, taking into account cooling loss, can such thermal efficiency that improves as shown in Figure 9.
In addition; In cooling unit 1A; Regulated at flow control valve 14 under the situation of flow with the cooling capacity of inhibition cylinder cap 52A of the cooling water that in cylinder cap side W/J521A, circulates, the flow of the cooling water that can regulate circulates in cylinder body side W/J511 is to improve the cooling capacity of cylinder body 51.Therefore, in cooling unit 1A, air inlet can be further cooled off thus, and the generation of pinking can be further suitably suppressed.
Have again, in cooling unit 1A, be to append flow control valve 60 under the situation of high load to open at engine operating status, thereby can promote the heat transmission to cylinder cap 52A from cylinder body 51a top via the hot transfer part 54a of height.Therefore, in cooling unit 1A, can further promote the cooling on cylinder 51a top thus, thereby can further suitably suppress the generation of pinking.
In addition, cooling unit 1A mainly can realize the raising of the thermal efficiency when slow-speed of revolution high load, on the other hand, the running of motor 50A is suitably set up.In this, in cooling unit 1A, when high rotating speed high load, guarantee to realize that also for example the heat load of the catalyzer that decline caused of delivery temperature reduces the reduction with pinking except reliability.In addition, when high rotating speed high load, compare the flow of the cooling water that increase circulates during with slow-speed of revolution high load in part W/J521eA, thereby can realize also that except the reduction of pinking the reliability that for example decrease of temperature caused between thorax improves.In addition; For example; In the time will appending the engine cold car that flow control valve 60 cuts out, through promote via the hot transfer part 54a of height from the heat transmission of cylinder head 52A to cylinder 51a top, the wall surface temperature that also can realize cylinder 51a the rise reduction of the not combustion loss that caused and/or the reduction of frictional loss.Therefore, at cooling unit 1A, not only under specific operating condition, even on the whole all can realize the raising of the thermal efficiency from running as the motor 50A that carries out usually.
Embodiment 2
Shown in figure 10; The cooling unit 1B that present embodiment relates to; Except possess motor 50B with replace motor 50A this respect, do not possess the flow control valve of appending 60 this respects, as after possess ECU70B to replace the ECU70A this respect stating, identical with cooling unit 1A essence.Have, cooling unit 1B also can likewise possess the flow control valve of appending 60 with cooling unit 1A again.Motor 50B is identical with motor 50A essence to replace the cylinder cap 52A this respect except possessing cylinder cap 52B.Cylinder cap 52B replaces the cylinder cap side W/J521A this respect identical with cylinder cap 52A essence except being provided with cylinder cap side W/J521B.Cylinder cap side W/J521B is except possessing part W/J521eB with identical with cylinder cap side W/J521A essence the instead of part W/J521eA this respect.
Shown in figure 11, in motor 50B, be provided with part W/J521eB with instead of part W/J521eA.Part W/J521eB is except being provided with the jog P this respect of peeling off that can produce the cooling water current according to the variation of flow velocity, and is identical with part W/J521eA essence.Particularly, be provided with on the face that is positioned at high hot transfer part 54a side of jog P in the internal face of part W/J521eB.In addition, particularly, jog P is formed by the shape (porous shape) of porous matter shape.
In this; The concrete shape of jog P is so long as the shape with following concavo-convex or surface roughness is then not special limits: change under the situation of unit possessing the flow velocity of for example in embodiment 1, describing that flow control valve 60 is used as changing according to engine operating status the flow velocity of the cooling water that in part W/J521eB, circulates that appends; When engine running in the scope of the Peak Flow Rate of cooling water applicatory; Can produce the peeling off of cooling water current according to the variation of flow velocity (promptly, when engine running in the scope of the Peak Flow Rate of cooling water applicatory; Below predetermined flow velocity, do not produce the peeling off of current of cooling water; On the other hand, under the high situation of the predetermined flow velocity of velocity ratio, can produce the peeling off of current of cooling water).
On the other hand; In cooling unit 1B; Specifically being shaped as of jog P possesses the shape of following concavo-convex or surface roughness: at engine operating status is can basis under the slow-revving situation and the state of corresponding W/P11 of slow-revving situation and flow control valve 14; Do not produce peeling off of cooling water current; On the other hand, be can basis under the high-revolving situation and the state of corresponding W/P11 of high-revolving situation and flow control valve 14 at engine operating status, produce peeling off of cooling water current.
ECU70B appends that flow control valve 60 is used as the controlling object this respect and as following outside the realization control unit this respect not being electrically connected, and is identical with ECU70A essence.Therefore, omit diagram about ECU70B.
Through ECU70B, consider compatibility and/or the simplification of whole control etc., control unit is embodied as, and about W/P11, the control that is used to drive W/P11 according to the rotating speed of motor 50B basically makes that the high more then spray volume of rotating speed is many more.On the other hand, through ECU70B, control unit is embodied as about flow control valve 14 and carries out the control shown in following.
Promptly; Control unit is embodied as; At engine operating status is that situation, engine operating status with the corresponding idling mode of subregion D1 is during during with the situation of the corresponding light load of subregion D2, with the corresponding engine cold car of subregion D5 with the corresponding engine start of subregion D6, is used for the control that flow control valve 14 cuts out.
In addition, control unit is embodied as, and is under the situation with the corresponding slow-speed of revolution high load of subregion D3 at engine operating status, is used for the control of flow control valve 14 being opened with the boiling holddown.In this, be embodied as, when with the boiling suppressor mode flow control valve 14 being opened, flow control valve 14 is specially with the necessary minimal aperture of the boiling that all suppresses cooling water under all conditions flow control valve 14 is opened.
In addition, control unit is embodied as, and is under the situation with the corresponding high rotating speed high load of subregion D4 at engine operating status, is used to make the control of flow control valve 14 standard-sized sheets.
Have again; Likewise possessing under the situation of appending flow control valve 60 with cooling unit 1A; Control unit also can be embodied as; At engine operating status is under the situation of slow-speed of revolution high load, flow control valve 14 cuts out or opens with the boiling suppressor mode, and will append flow control valve 60 and open with the aperture of peeling off that can not produce the cooling water current at W/J521eB.In this case, suitable aspect the cooling loss that can further reduce cylinder cap 52B.
Then, use flow chart shown in Figure 12 that the processing of carrying out with ECU70B is described.Have, this flow chart is except step S21B being set to replace step S21A, step S31B to be set to replace step S31A, step S41B to be set to replace the step S41A this respect, and is identical with flow chart shown in Figure 7 again.Therefore,, specify these steps here.Be connected in step S3, or be that ECU70B closes (step S21B) with flow control valve 14 under the situation about judging certainly in step S5, S12, S13.In addition, under the situation about judging certainly, ECU70B opens (step S31B) with flow control valve 14 with the boiling suppressor mode in step S14.In addition, under the negative situation about judging, ECU70B makes flow control valve 14 standard-sized sheets (step S41B) in step S14.
Then, the action effect about cooling unit 1B describes.In cooling unit 1B, the spray volume of W/P11 is corresponding with the rotating speed of motor 50B basically, and the high more then spray volume of rotating speed is many more.In addition, in cooling unit 1B, be under the slow-revving situation at engine operating status, flow control valve 14 is opened with the boiling suppressor mode.Therefore, in cooling unit 1B, be under the situation of slow-speed of revolution high load at engine operating status, the flow of the cooling water that in part W/J521eB, circulates relatively diminishes.And thus, the flow velocity of the cooling water that in part W/J521eB, circulates becomes the flow velocity of peeling off that can not produce the cooling water current at jog P.
Therefore, be under the situation of slow-speed of revolution high load at engine operating status, the increase of the surface area that the fine structure of jog P helps to contact with cooling water, its result can promote the heat transmission to cylinder cap 52B from cylinder 51a top via the hot transfer part 54a of height.And, thus in cooling unit 1B, when the slow-speed of revolution high load that the spray volume of W/P11 relatively diminishes, can suitably suppress the generation of pinking.
On the other hand, in cooling unit 1B, be under the situation of high rotating speed high load at engine operating status, the spray volume of W/P11 relatively becomes greatly, and flow control valve 14 is a standard-sized sheet.Therefore, in this cooling unit 1B, be under the situation of high rotating speed high load at engine operating status, it is big that the flow of the cooling water that in part W/J521eB, circulates relatively becomes.And the flow velocity of the cooling water that in part W/J521eB, circulates thus becomes the flow velocity of peeling off that produces the cooling water current at jog P.
Therefore; In cooling unit 1B, be under the situation of slow-speed of revolution high load at engine operating status, the replacing that is in the cooling water in the fine structure of jog P is stagnated; And then the generation nucleate boiling, thereby suppress the heat transmission to cylinder cap 52B from cylinder 51a top via the hot transfer part 54a of height.Promptly; In cooling unit 1B; Control unit is to control under the situation of high rotating speed high load at engine operating status, produces heat insulating function through peeling off of jog P place cooling water current; At least correspondingly between part W/J521eB, cylinder 51a, do not carry out heat transmission, perhaps be suppressed at the heat transmission of carrying out therebetween.But in this case, the spray volume of W/P11 is big, and the cooling effect of the cooling water that in part W/J511a and/or part W/J521b, circulates also exists, and therefore can suppress the generation of pinking.
Therefore; Cooling unit 1B; Spray volume at W/P11 is set under the situation corresponding with the rotating speed of motor 50B basically, that the high more then spray volume of rotating speed is more; When the spray volume of W/P11 is the slow-speed of revolution high load of low spray volume and the spray volume of W/P11 when being the high rotating speed high load of high spray volume, but balance suppresses the generation of pinking well, is suitable in this.
In addition, in cooling unit 1B,, therefore when suppressing the generation of pinking, also can not need append flow control valve 60 owing to can as said, suppress the generation of pinking.That is, in cooling unit 1B, even need not append under the situation of flow control valve 60, also can through with the variation of the spray volume of the corresponding W/P11 of rotating speed of motor 50B, suitably control the current of the cooling water at jog P place.Therefore, in cooling unit 1B, but the also simplification of implementation structure thus.
Have again; Likewise possess under the situation of appending flow control valve 60 at cooling unit 1B and cooling unit 1A; Control unit also can be embodied as; At engine operating status is under the situation of high rotating speed high load, is used to make flow control valve 14 standard-sized sheets and will appends the control that flow control valve 60 is opened with the aperture of peeling off of the current that do not produce cooling water at W/J521eB.And, in this case, the generation of the pinking in the time of also can more suitably suppressing high rotating speed high load.
The foregoing description is the preferred embodiments of the present invention.But, be not limited to this, in the scope that does not break away from purport of the present invention, can carry out various distortion and implement.
For example, in the above-described embodiments, when the running that makes each motor 50A, 50B is set up, be suitable, be that the situation of cooling medium force feed unit is illustrated therefore about W/P11.But, in the present invention, being not limited to this, cooling medium force feed unit also can be the mechanical type W/P that for example drives with the output of motor.
In addition, in the above-described embodiments, when the running that makes each motor 50A, 50B was set up, an example of the control of carrying out according to above-mentioned control policy about control unit was illustrated.
But, in the present invention, might not be limited to this, control unit also can carry out other suitable control when the running that makes motor is set up.In this; Also can: for example; Possess a plurality of first portions cooling medium path and possess under the situation of a plurality of second cooling medium paths at the first cooling medium path of cylinder body setting at the second cooling medium path of cylinder cap setting; Possess a plurality of part cooling capacity regulation units that to adjust the cooling capacity of cylinder body or cylinder cap respectively with this first and second part cooling medium path accordingly partly, and come suitably to control cooling medium force feed unit, cooling capacity regulation unit, flow change unit and/or part cooling capacity regulation unit according to above-mentioned control policy.Thus, the running of motor is more suitably set up.
In addition; Following situation has been described in the above-described embodiments: at engine operating status is under the situation with the corresponding slow-speed of revolution high load of subregion D3; Control unit is closed or flow control valve 14 with the control of opening of boiling holddown through carrying out, and is used to suppress as the cooling capacity of each cylinder cap 52A, 52B and based on the control of the cooling capacity of each cylinder cap side W/J521 performance.
But; Among the present invention, might not be limited to this, for example; Cooling unit also can also possess the storage element of the cooling medium that storage extracts from the second cooling medium path and the cooling medium force feed unit of conveying cooling medium between this storage element and the second cooling medium path; And control unit also can pass through this cooling medium force feed unit of control, is under the situation of slow-speed of revolution high load at engine operating status, is used at least temporarily extracting from cylinder cap the control of cooling medium.As the formation suitable with cooling medium force feed unit, particularly, for example special heat-accumulating box and the motor-drive pump of opening the record of 2009-79505 communique arranged with this storage element.Thus, can further suitably reduce cooling loss.
In addition, this storage element, cooling medium force feed unit and control unit are applicable to that also engine operating status is an idling mode or during for the situation of light load or engine cold car.Have again; In this case; Can possess storage first and second storage element from the cooling medium of first and second cooling medium path extraction; As storage element, and can possess in the second cooling medium force feed unit of carrying the first cooling medium force feed unit of cooling medium between first storage element and the first cooling medium path and between second storage element and the second cooling medium path, carrying cooling medium, as cooling medium force feed unit.At this moment, in first and second cooling medium path under the situation of the shared cooling medium of circulation, also can be with first and second storage element as a storage element, and with first and second cooling medium force feed unit as a cooling medium force feed unit.
Like this, can further realize reduction and the engine warming up promotion etc. of raising, the cooling loss of velocity of combustion, thereby the running of motor is set up.
In addition, in the foregoing description 1, explained when engine operating status is situation, the engine cold car of idling mode or during engine start, control unit is embodied as the situation of the control that is used to close flow control valve 14.
But; In the present invention, might not be limited to this, for example; Cooling unit also can also possess accumulation of heat cooling medium feed unit from the accumulation of heat cooling medium to first and second cooling medium path that can supply with; And when engine operating status is idling mode, engine cold car or during engine start, and the temperature of accumulation of heat cooling medium is than under the high situation of the temperature of cooling medium, and control unit also can be used for supplying with from this accumulation of heat cooling medium feed unit the control of accumulation of heat cooling medium.As with the suitable structure of this accumulation of heat cooling medium feed unit, for example specifically have and open the heat exchange portion that puts down in writing in the 2009-208569 communique the spy.
Have again; In this case; Control unit for example also can; In the cooling capacity regulation unit of the cooling capacity through control section ground adjustment cylinder cap, with the cooling capacity regulation unit that spark plug, relief opening and/or suction port are provided with accordingly, the control that is used to make the flow of accumulation of heat cooling medium to increase.
Like this, can realize suitably that also engine warming up promotes, do not fire the reduction of HC and the raising of engine ignition property, its result also can more suitably make the running of motor set up.
In addition, control unit mainly realizes it being reasonably through each ECU70 that controls each motor 50A, 50B, still, also can make up through hardware such as for example other electric control devices or special-purpose electronic circuit or its and realize.In addition, control unit can come decentralized control ground to realize through the combination of hardware such as for example a plurality of electric control devices or a plurality of electronic circuits or hardware such as electric control device and electronic circuit.
The explanation of reference character:
1 cooling unit
11W/P
12 radiators
13 thermostats
14 flow control valves
50A, 50B motor
51 cylinder bodies
The 51a cylinder
511 cylinder body side W/J
52A, 52B cylinder cap
The 52a suction port
The 52b relief opening
521 cylinder cap side W/J
54 liners
The high hot transfer part of 54a
60 append flow control valve
70ECU
Claims (6)
1. the cooling unit of a motor is characterized in that, possesses:
Motor; It possess cylinder body, cylinder cap and be arranged at said cylinder body and said cylinder cap between liner; This liner has higher and can allow that the cylinder upper of said cylinder body and the heat transmission of the heat transmission between said cylinder cap allow portion than other part heat conductivity, and the said heat transmission in said cylinder cap allows that the periphery of portion is provided with the cooling medium path; With
Control unit, it is according to engine operating status, is used to change the control at the circulation status of the cooling medium of said cooling medium path circulation.
2. the cooling unit of motor according to claim 1 is characterized in that,
Said control unit; At engine operating status is under the situation of the high load of the slow-speed of revolution at least in slow-speed of revolution high load and the high rotating speed high load; Be used for through changing circulation status, and promote the control of transmitting to the heat of said cylinder cap from said cylinder upper of allowing via said heat transmission that portion carries out at the cooling medium of said cooling medium path circulation.
3. the cooling unit of motor according to claim 1 and 2 is characterized in that,
Be provided with the transmission of said heat and allow portion, said heat transmission allow portion with the shape of cross section L font surround in the said liner with said cylinder body mutually in the face of and be positioned at the part of the combustion chamber side of said motor.
4. according to the cooling unit of each described motor in the claim 1 to 3, it is characterized in that,
Allow that as be provided with said heat transmission with the parts of said liner split portion is provided with.
5. according to the cooling unit of each described motor in the claim 1 to 4, it is characterized in that,
Path wall in said cooling medium path, that be positioned at said cylinder body side is provided with jog, and this jog can the variation according to flow velocity produce peeling off of cooling medium stream in the scope of the Peak Flow Rate of cooling medium.
6. according to the cooling unit of each described motor in the claim 1 to 5, it is characterized in that,
Also possess the cooling capacity regulation unit, this cooling capacity regulation unit can not suppress the cooling capacity of the said cylinder cap of cooling capacity ground inhibition of said cylinder body,
Said control unit is also through controlling the control that said cooling capacity regulation unit is used to suppress the cooling capacity of said cylinder cap.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2009/070190 WO2011067830A1 (en) | 2009-12-01 | 2009-12-01 | Cooling device for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102639835A true CN102639835A (en) | 2012-08-15 |
Family
ID=44114696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801626715A Pending CN102639835A (en) | 2009-12-01 | 2009-12-01 | Cooling device for engine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120234267A1 (en) |
| EP (1) | EP2508728A4 (en) |
| JP (1) | JP5338916B2 (en) |
| CN (1) | CN102639835A (en) |
| WO (1) | WO2011067830A1 (en) |
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| CN106050385A (en) * | 2015-04-09 | 2016-10-26 | 丰田自动车株式会社 | Cooling device for internal combustion engine |
| CN107002591A (en) * | 2014-11-13 | 2017-08-01 | 丰田自动车株式会社 | The cylinder head of multiple cylinder engine |
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| US20130269666A1 (en) * | 2011-08-12 | 2013-10-17 | Mcalister Technologies, Llc | Combustion chamber inserts and associated methods of use and manufacture |
| JP6581922B2 (en) * | 2016-02-29 | 2019-09-25 | 株式会社Ｓｕｂａｒｕ | Vehicle control device |
| JP6791089B2 (en) * | 2017-10-11 | 2020-11-25 | 株式会社豊田自動織機 | Cylinder head cooling device |
| JP2020204272A (en) | 2019-06-14 | 2020-12-24 | トヨタ自動車株式会社 | Engine cooling structure |
| AT522742B1 (en) * | 2019-06-28 | 2021-12-15 | Avl List Gmbh | CYLINDER HEAD GASKET |
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| JP2007247545A (en) * | 2006-03-16 | 2007-09-27 | Nissan Motor Co Ltd | Variable compression ratio internal combustion engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002591A (en) * | 2014-11-13 | 2017-08-01 | 丰田自动车株式会社 | The cylinder head of multiple cylinder engine |
| CN106050385A (en) * | 2015-04-09 | 2016-10-26 | 丰田自动车株式会社 | Cooling device for internal combustion engine |
| CN106050385B (en) * | 2015-04-09 | 2018-11-13 | 丰田自动车株式会社 | The cooling device of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5338916B2 (en) | 2013-11-13 |
| EP2508728A1 (en) | 2012-10-10 |
| JPWO2011067830A1 (en) | 2013-04-18 |
| US20120234267A1 (en) | 2012-09-20 |
| EP2508728A4 (en) | 2014-03-19 |
| WO2011067830A1 (en) | 2011-06-09 |
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Application publication date: 20120815 |