CN1211570C - Cooling device of internal-combustion engine and internal-combustion engine - Google Patents
Cooling device of internal-combustion engine and internal-combustion engine Download PDFInfo
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- CN1211570C CN1211570C CNB021460760A CN02146076A CN1211570C CN 1211570 C CN1211570 C CN 1211570C CN B021460760 A CNB021460760 A CN B021460760A CN 02146076 A CN02146076 A CN 02146076A CN 1211570 C CN1211570 C CN 1211570C
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- cooling water
- cooling
- passage
- cylinder block
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/029—Expansion reservoirs
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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
- F01P2003/021—Cooling cylinders
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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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- 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
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/08—Cabin heater
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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 apparatus includes a cylinder head cooling water passage formed in a cylinder head, a first supply passage having one end connected to a water pump and the other end connected to the cylinder head cooling water passage, a cylinder block cooling water passage formed in a cylinder block, a connecting portion for connecting the cylinder head cooling water passage and the cylinder block cooling water passage, and an external flow passage having one end connected to each of the cylinder head cooling water passage and the cylinder block cooling water passage and the other end connected to the water pump. The cooling apparatus further includes a second supply passage having one end connected to the water pump and the other end connected to the cylinder block cooling water passage, and an outflow regulator provided between the cylinder block cooling water passage and the external flow passage.
Description
Technical field
The present invention relates to a kind of cooling unit that is used for internal-combustion engine, this cooling unit is applicable to the internal-combustion engine of automobile.
Background of invention
Usually, has such one type motor, wherein, cooling water is introduced a cylinder head cooling water passage from a water pump, and a part of cooling water introduced in the cylinder block cooling water passage from this cylinder head cooling water passage, so that countercylinder lid and cylinder block cool off, then these cooling waters are discharged motor.Because it is relatively high to flow into the temperature of the cooling water in the cylinder block cooling water passage after the countercylinder lid cools off, thereby can prevent cylinder block, so just can eliminate the friction between cylinder and the piston (not shown) by undue cooling (it is too many to be cooled).
In above-mentioned motor, there is such a case, that is, can produce gas (air pocket) in the cooling water of the attachment portion between cylinder head cooling water passage and cylinder block cooling water passage, especially when replenishing cooling water.In this case, the buoyancy that acts on the gas can stop gas to move along the flow of cooling water direction that the cylinder head cooling water passage from upside flows to the cylinder block cooling water passage of downside.Thereby, can not discharge motor to the gas that is arranged in the attachment portion.
In addition, also reduced that regional cooling performance, and might cause heat loss.
A kind of technology that is used to eliminate air pocket is disclosed in open source literature JP-A-5-256131.In this piece open source literature, a kind of cooling unit that is used for internal-combustion engine is provided, in this cooling unit, cooling water is incorporated into a cylinder head cooling water passage and a cylinder block cooling water passage concurrently from a water pump, then cooling water is carried from said cylinder head cooling water passage and said cylinder block cooling water passage concurrently.A cooling water flow passage is set in the part of the cylinder that may produce air pocket, be used to make cooling water to flow to cylinder head from cylinder block, and a shaking the needle device (jiggle pin assembly) is installed in a position of this cooling water flow passage, thereby, if make this part be heated to abnormal high temperature because of producing air pocket, so, this shakes needle device and just is opened, make a part of cooling water flow to cylinder head, so that eliminate air pocket from cylinder block.
Yet dangerous, promptly cylinder block might too be cooled off, thereby can increase the friction between cylinder and the piston.In addition, in the part that may produce air pocket, be provided for making cooling water to flow to the cooling water flow passage of cylinder head from cylinder block, and the shaking the needle device is set in the position of cooling water flow passage, thereby make the cooling structure in the cylinder become very complicated, and make the manufacture method of the cooling unit of internal-combustion engine become very complicated.
Summary of the invention
Goal of the invention of the present invention provides a kind of cooling unit that is used for internal-combustion engine, in this cooling unit, the part of the cooling water of being supplied with by water pump that flows to a cylinder head cooling water passage is incorporated into a cylinder block cooling water passage from this cylinder head cooling water passage, wherein, utilize a relatively simple structure that the air pocket in the cooling water passage is evacuated.
According to an aspect of the present invention, a kind of cooling unit that is used for internal-combustion engine is provided, this cooling unit has first state of cooling, in this first state of cooling, cooling water is by first cooling system, second cooling system, and the 3rd cooling system flow, in said first cooling system, the cooling water of discharging from water pump flows out motor by the cylinder head cooling water passage, in said second cooling system, a part of cooling water by said cylinder head cooling water passage flows into the cylinder block cooling water passage that is provided with down through the attachment portion, and outflow motor, in said the 3rd cooling system, the cooling water of discharging from said water pump flows out motor by said cylinder block cooling water passage; This cooling unit also has second state of cooling, in this second state of cooling, cooling water flows by said first cooling system and one the 4th cooling system, in said the 4th cooling system, the cooling water of discharging from said water pump flows into said cylinder block cooling water passage, and the said attachment portion of process flows into said cylinder head cooling water passage, flow out motor then, wherein, by stopping the startup of said the 3rd cooling system, said first state of cooling is transformed to said second state of cooling fully.Wherein said cooling unit also comprises: one first supply passage, and an end of this first supply passage is connected with the waste side of a water pump, and the other end is connected with said cylinder head cooling water passage; One outer flow channels, an end of this outer flow channels and said cylinder head cooling water passage link to each other with each bar passage in the cylinder block cooling water passage, and the other end links to each other with a suction side of said water pump; One second supply passage, an end of this second supply passage links to each other with the waste side of said water pump, and the other end links to each other with said cylinder block cooling water passage; One flows out regulator, be arranged between said cylinder block cooling water passage and the said outer flow channels, wherein said first cooling system is by first supply passage, cylinder head cooling water passage and outer flow channels form, wherein said second cooling system is by first supply passage, the cylinder head cooling water passage, the attachment portion, cylinder block cooling water passage and outer flow channels form, wherein said the 3rd cooling system is by second supply passage, cylinder head cooling water passage and outer flow channels form, wherein said the 4th cooling system is by second supply passage, the cylinder head cooling water passage, the attachment portion, cylinder block cooling water passage and outer flow channels form, and wherein, described the 3rd cooling system stops its operation so that first state of cooling is switched to second state of cooling by cutting out described outflow regulator.
Adopt this structure, by closing said outflow regulator, just can make that the cooling-water flow to said cylinder block cooling water passage almost is stopped through said attachment portion from said cylinder head cooling water passage, thereby make the cooling water that flows to the cylinder block cooling water passage by second supply passage from water pump upwards flow to the cylinder head cooling water passage by the cylinder block cooling water passage through said attachment portion, and these cooling waters are converged by the cooling water that first supply passage flows to the cylinder head cooling water passage from water pump with those, and cooling water is transported to the outer flow channels in the motor outside from the cylinder head cooling water passage in the cylinder head cooling water passage.
In this way, because cooling water upwards flows from the cylinder block cooling water passage, therefore, even near the attachment portion between cylinder head cooling water passage and the cylinder block cooling water passage, produce air pocket, also can be discharged into the outer flow channels in the motor outside to gas by the cylinder head cooling water passage with cooling water.
Description of drawings
Fig. 1 is according to the skeleton diagram of the cooling unit that is used for car combustion engine of one embodiment of the invention, has expressed the situation of normal working time;
Fig. 2 is the skeleton diagram that is used for the cooling unit of car combustion engine, has expressed the situation of gas when the cylinder block cooling water passage is discharged.
Embodiment
Come the preferred embodiment of the present invention will be described in detail below with reference to accompanying drawings.The size of parts, material, shape and mutual Rankine-Hugoniot relations are not limited to described situation here, can change within the scope of the invention.
Fig. 1 is according to the skeleton diagram of the cooling unit of the internal-combustion engine that is used for automobile of one embodiment of the invention, has expressed the situation of normal working time.Fig. 2 is the skeleton diagram of cooling unit, has expressed the situation of gas when the cylinder block cooling water passage is discharged.
As depicted in figs. 1 and 2, cylinder head 1 is provided with a cylinder head cooling water passage 3, is used to make cooling water flow through this cylinder head 1, so that this cylinder head 1 is cooled off; Cylinder block 2 is arranged on below the cylinder head 1, and this cylinder block 2 is provided with a cylinder block cooling water passage 4, is used to make cooling water flow through this cylinder block 2, so that this cylinder block 2 is cooled off.Cylinder block cooling water passage 4 and cylinder head cooling water passage 3 utilize a junction that connects the surface between cylinder head 1 and cylinder block 2 to divide 23 to link to each other, so that the permission cooling water flows into and flows out.At cooling water passage is among the embodiment of so-called open template (open deck type), and said attachment portion 23 is parts that cylinder head cooling water passage 3 is connected with cylinder block cooling water passage 4.If cooling water passage is in the situation of so-called closed template (closed deck type), so, said attachment portion 23 is one to be used to be communicated with the communication passage of cylinder head cooling water passage 3 and cylinder block cooling water passage 4.
Cooling water inlet pipe 18 upstream sides at cylinder head cooling water passage 3 as first supply passage link to each other with the outside of motor, and the upstream side of this cooling water inlet pipe 18 links to each other with the waste side of water pump 7.Cooling water inlet pipe 18 upstream sides in said attachment portion are branched, and lead to cylinder head cooling water passage 3, and form a cooling water supply passage 20.As the cooling water supply passage 20 of second supply passage, the one end links to each other with the waste side of water pump 7, and the other end links to each other with the inlet side of cylinder block cooling water passage 4.In this embodiment, first supply passage and second supply passage partially overlap, thereby have simplified flow channel.
The sectional area of the flow channel of cooling water inlet pipe 18 is greater than the sectional area of cooling water supply passage 20, therefore, be greater than the cooling water flow that flows to cylinder block cooling water passage 4 from cooling water supplying pipe 20 from cooling water inlet pipe 18 cooling water flows that flow to cylinder head cooling water passage 3.
One end of water-cooling tube 13 links to each other with the motor outside in cylinder head cooling water passage 3 downstream sides, and an end of water-cooling tube 14 links to each other with the motor outside in cylinder block cooling water passage 4 downstream sides.The other end (downstream side) of water-cooling tube 13 and water-cooling tube 14 links to each other with a radiator 5 with 31 by water-cooling tube 30 respectively.One water tank 26 links to each other through the top of spill pipe 25 with radiator 5.When gas was comprised in the cooling water of inflow radiator 5, these gases will form bubble, and move to the top of radiator, are discharged into water tank 26 by spill pipe 25 then.
One duct thermostat 6 links to each other with 14 the other end with water-cooling tube 13 with 28 through water-cooling tube 27.A water-cooling tube 15 that links to each other with the outlet of radiator 5 also links to each other with this duct thermostat 6.The water-cooling tube 13 that connects cylinder head cooling water passage 3 and radiator 5 is branched at the upstream side of a water-cooling tube 27, water-cooling tube 27 wherein links to each other with the other end of water-cooling tube 13, and link to each other with a water-cooling tube 16 through a heater 8, water-cooling tube 16 is connected the downstream side of duct thermostat 6, and this water-cooling tube 16 links to each other with the suction side of water pump 7.
During normal running, when the temperature of cooling water is a predetermined value or when lower, duct thermostat 6 just is opened, thus make the cooling water that flows to motor outside through water- cooling tube 13 and 14, water- cooling tube 27 and 28 and water-cooling tube 16 turn back to water pump 7, and need not the intervention of radiator 5.Even when engine start, cooling water also can turn back to water pump 7 according to the order through water-cooling tube 13, water-cooling tube 27 and water-cooling tube 16, and need not the intervention of radiator 5.
On the other hand, during normal running, when the temperature of cooling water surpasses predetermined value, duct thermostat just is closed, thereby makes cooling water turn back to water pump 7 according to having passed through radiator 5 through the order of water- cooling tube 13 and 14, water- cooling tube 30 and 31, radiator 5, water-cooling tube 15, water-cooling tube 16.And when engine start, turn back to water pump 7 according to having passed through radiator 5 through the order of water-cooling tube 13, water-cooling tube 30, radiator 5, water-cooling tube 15, water-cooling tube 16.In this way, utilize the effect of radiator 5 just can reduce the temperature of cooling water.
That is to say, when the temperature of cooling water is a predetermined value or when lower, cooling water is just in the situation current downflow that does not have radiator 5 to get involved, but, when the temperature of cooling water surpasses predetermined value, change the cooling-water flow passage by the start-up temperature regulator, thereby cooling water is flowed through radiator 5.
The water-cooling tube 14 that is connected cylinder block cooling water passage 4 downstream sides is provided with a control valve 10, and this control valve 10 is made up of a solenoid valve, is used to open or close water-cooling tube 14, and this control valve 10 is opened or closed by a valve control 11.By the outflow controlling mechanism that control valve 10 and valve control 11 are formed the cooling water flow output that flows to water-cooling tube 14 from cylinder block cooling water passage 4 is regulated.It must be solenoid valve that control valve does not need, and also can be a kind of valve that is opened or closed by motor.
Having the cooling unit that is used for car combustion engine of this structure, during the normal running of motor, when temperature was higher than predetermined value, valve control 11 was just opened control valve 10.Thereby, make the major part of the cooling water of discharging from water pump 7 flow into cylinder head cooling water passages 3 by cooling water inlet pipe 18, and make the part of the cooling water of discharging from water pump 7 flow into cylinder block cooling water passages 4, as shown in Figure 1 by cooling water supply passage 20.
Because the flow channel sectional area of cooling water inlet pipe 18 is sufficiently greater than the sectional area of cooling water supply passage 20, therefore, the cooling water flow that supplies to cylinder head cooling water passage 3 from water pump 7 is greater than the flow that supplies to the cooling water of cylinder block cooling water passage 4 from water pump 7.
The cooling water flow that flows into cylinder head cooling water passage 3 so that countercylinder lid 1 cools off, and flows out motor (first cooling system) by water-cooling tube 13, thereby makes cooling water flow excess temperature regulator 6 or radiator 5 through cylinder head cooling water passage 3.Since cylinder block 2 be set at cylinder head 1 below, therefore, be applied on the cooling water that flows through cooling water passage 3 from the gravity of cylinder head 1 to the downward effect of cylinder block 2.In addition, because the cooling water flow that flows into cylinder head cooling water passage 3 is greater than the cooling water flow that flows in the cylinder block cooling water passage 4, therefore, pressure in the cylinder head cooling water passage 3 is greater than the pressure in the cylinder block cooling water passage 4, thereby the part of cooling water that flows to cylinder head cooling water passage 3 23 flows to cylinder block cooling water passage 4 downwards through the attachment portion, shown in arrow among Fig. 1, and it is mobile by cylinder block cooling water passage 4, so that countercylinder body 2 cools off, and through water-cooling tube 14 outflow motors (second cooling system).
In addition, the part of the cooling water of carrying from water pump 7 flows into cylinder block cooling water passages 4 by cooling water supply passage 20, and converge with cooling water from cylinder head cooling water passage 3, flow out motors (the 3rd cooling system) by cylinder block cooling water passage 4 and water-cooling tube 14 then.Flow out the cooling water of motor returns through the outer flow channels that is made of many water-cooling tubes with the cooling water that flows out motor from cylinder block cooling water passage 4 from cylinder head cooling water passage 3, one end of water-cooling tube wherein links to each other with the outlet side of the outlet side of cylinder head cooling water passage 3 and cylinder block cooling water passage 4, and the other end links to each other with the suction side of water pump 7.
As previously mentioned, during normal running, utilize first cooling system, second cooling system and the 3rd cooling system can obtain first state of cooling.That is to say that cooling water flows into cylinder head cooling water passages 3 from water pump 7,23 flow to cylinder block cooling water passage 4 through the attachment portion from the part of the cooling water of cylinder head cooling water passage 3.The higher cooling water of temperature after flowing through cylinder block cooling water passage 4 does not flow into cylinder head cooling water passage 3.Thereby promoted the cooling of cylinder head, and cooled off effectively around the suction port in the energy countercylinder lid, then can improve air-breathing volumetric efficiency, thus improve the performance of motor.
Because the amount of cooling water that flows into cylinder head cooling water passages 3 from water pump 7 through cooling water inlet pipe 18 is sufficiently greater than the amount that flows into the cooling water of cylinder block cooling water passages 4 from water pump 7 through cooling water supply passage 20, therefore, can promote the cooling of cylinder head 1, thereby improve the performance of motor.
In addition, the higher cooling water of temperature after flowing through cylinder head cooling water passage 3 flows into cylinder block cooling water passage 4, thereby avoided the undue cooling of cylinder block 2, so can prevent the increase that rubs between cylinder in the cylinder block 2 and the piston (not shown).
On the other hand, when engine start, if the temperature of cooling water is a predetermined value or lower, so, valve control 11 is with regard to closed control valve 10, with restriction cooling water flow supercooling water pipe 14, thereby the cooling water in the cylinder block cooling water passage 4 is difficult to by the outer flow channels outside water-cooling tube 14 flow direction engines.
Thereby cooling water 23 is stopped to the mobile of cylinder block cooling water passage 4 through the attachment portion from cylinder head cooling water passage 3, and the cooling water that flows to cylinder block cooling water passage 4 from water pump 7 through cooling water supply passage 20 23 upwards flow to cylinder head cooling water passage 3 from cylinder block cooling water passage 4 through the attachment portion, and converge from the cooling water that water pump 7 flows to cylinder head cooling water passage 3 with those, and by cylinder head cooling water passage 3 outflow motors (the 4th cooling system), flow to duct thermostat 6 or radiator 5 by cooling water passage 13 then, shown in the arrow among Fig. 2.In this way, when control valve 10 is closed when flowing out motor with the restriction cooling water by the cylinder block cooling water passage, the cooling water of discharging from water pump 7 flows through cylinder head cooling water passage 3, makes cooling water just can obtain second state of cooling from first cooling system and the 4th cooling system that water-cooling tube 13 flows out motor thereby utilize.
That is to say that in second state of cooling, a part of cooling water of discharging from water pump 7 upwards flows to cylinder head cooling water passage 3 from cylinder block cooling water passage 4.Therefore, even near attachment portion 23 between cylinder head cooling water passage 3 and the cylinder block cooling water passage 4, there are some air pockets, because the buoyancy and the cooling-water flow direction that act on the gas are basic identical, therefore, by cylinder head cooling water passage 3 these gases are discharged motor with cooling water in this case, and can not acted on originally on one's body the obstruction of buoyancy of gas.
So, 23 flow to cylinder head cooling water passage 3 from cylinder block cooling water passage 4 through the attachment portion by cooling water, just can discharge motor being positioned near attachment portion 23 gases, with a kind of simple structure, in this structure, the waste side that cooling water supply passage 20 is connected to cylinder block cooling water passage 4 on water pump 7 is set, the cooling water that flows to cooling water passage 14 from cylinder block cooling water passage 4 is regulated by control valve 10, and this control valve 10 is set in the cooling water passage 14 that is connected with cylinder block cooling water passage 4.
Therefore, can prevent from the temperature of cylinder block 2 to be raise because of the generation of air pocket, so, just can improve the cooling effect of cylinder block 2, and can prevent heat loss.
In this embodiment, duct thermostat 6 is equated substantially to the temperature of opening the valve state from closing the valve state transformation with making control valve 10 to the temperature of the cooling water that closes the valve state from opening the valve state transformation.When duct thermostat 6 was opened, the gas of discharging from motor was located near duct thermostat 6 or the radiator 5.When duct thermostat 6 is closed, be positioned near the radiator 5 gas just with cooling water inflow radiator 5, and from the top of radiator 5 in spill pipe 25 enters water tank 26.
In the above-described embodiments, when engine start, if the temperature of cooling water is a predetermined value or lower, so, control valve 10 just is closed, thereby closes water-cooling tube 14, so that get rid of gas.Yet, also can manual type come operating valve controller 11, so that closed control valve 10 at random.
In such cooling unit, as present embodiment, wherein, the cooling water of discharging from water pump 7 is fed into cylinder head cooling water passage 3, these cooling waters 23 flow to cylinder block cooling water passage 4 from cylinder head cooling water passage 3 through the attachment portion, probably can produce air pocket when the filling cooling water.When cooling water 23 flows to cylinder block cooling water passage 4 so that exchange during cooling water, especially near the attachment portion 23 between cylinder block cooling water passage 3 and the cylinder block cooling water passage 4, is easy to produce air pocket from cylinder head cooling water passage 3 through the attachment portion.Therefore, after the exchange cooling water, come operating valve controller 11, come closed control valve 10, so that get rid of gas, so just can discharge motor being positioned near attachment portion 23 gases with manual type.
By the opening/closing state of any setting control valve 10, and suitably change the sectional area of the flow channel of water-cooling tube 14, just can regulate the flow that flows through water-cooling tube 14 from cylinder block 2.In this case, regulate from the flow (flow) of the cooling water of cylinder block 2 outflows according to the working condition of motor, so that can change the flow-rate ratio (flow ratio) of the cooling water that flows through cylinder head cooling water passage 3 and cylinder block cooling water passage 4 arbitrarily, thereby can improve the cooling effect of cooling water to motor.
In addition, can constitute control valve 10,, promptly pass through the temperature of the cooling water of water-cooling tube 14, open or close water-cooling tube 14 so that according to the outlet temperature that flows out from motor by a duct thermostat.In this case, when the temperature of the cooling water that flows through water-cooling tube 14 was lower than predetermined value, duct thermostat just cut out water-cooling tube 14, thereby utilized a simple relatively structure just can discharge motor near the air pocket the attachment portion 23.The switch temperature of duct thermostat can be configured to be equal to or less than the switch temperature of the duct thermostat 6 that is arranged in the outer flow channels, or is configured to be higher than the switch temperature of duct thermostat 6.
As a variant embodiment, can in cooling water supply passage 20, be provided with one as the cut-off valve that flows into (inflow) regulator, be used to close from the supply of water pump 7 to cylinder block cooling water passage 4.When being closed by control valve 10 or suppress cooling-water flow from water-cooling tube 14, cut-off valve can be opened, thereby cooling water is supplied to cylinder block cooling water passage 4 from water pump 7 through cooling water supply passage 20.In this case, the channel cross-sectional area of cooling water inlet pipe 18 not necessarily must be greater than the sectional area of cooling water supply passage 20, thereby makes the sharp bigger degrees of freedom that has in design.
In addition, cylinder block 2 also not necessarily must be set at cylinder head 1 under, but also can be set at the oblique below of cylinder head 1.When cooling water when cylinder block cooling water passage 4 flows to cylinder head cooling water passage 3, can not act on and to hinder on the direction that cooling water gas moves as long as act on buoyancy near the gas that is arranged in the attachment portion 23, just can obtain the effect identical with top embodiment.
The temperature that makes control valve 10 transform to the cooling water of open mode from closed condition not necessarily must be configured to make no better than duct thermostat from opening the temperature of valve state transformation to the cooling water that closes the valve state, makes duct thermostat from opening the temperature of valve state transformation to the cooling water that closes the valve state but can be configured to be below or above.
To describe such a case below, and promptly in this case, make control valve 10 be configured to be higher than to the temperature of the cooling water of opening the valve state and make duct thermostat 6 from opening the temperature of valve state transformation to the cooling water that closes the valve state from closing the valve state transformation.To save detailed description at this to those structures identical with top embodiment.
In this case, when duct thermostat 6 is in out the valve state, just form second outer flow channels, an end of this second outer flow channels with link to each other as the water-cooling tube 13 of the first flow of cooling water passage and as the other end (downstream side) of the water-cooling tube 14 of the second flow of cooling water passage.The other end of this second outer flow channels is walked around around the radiator 5, and links to each other with the suction side of water pump 7.More particularly, second outer flow channels by: form with water- cooling tube 27 and 28, duct thermostat 6 and water-cooling tube 16 that water-cooling tube 13 links to each other with 14 other end, one end of water-cooling tube 16 wherein links to each other with the downstream side of duct thermostat 6, and the other end links to each other with the suction side of water pump 7.
On the other hand, when duct thermostat 6 from opening the valve state transformation when closing the valve state, the cooling-water flow passage just transforms to first outer flow channels from second outer flow channels, wherein an end of this first outer flow channels links to each other with the other end of water-cooling tube 13 and water-cooling tube 14, and the other end then links to each other through the suction side of radiator 5 with water pump 7.More particularly, first outer flow channels by: form with water- cooling tube 30 and 31, radiator 5, water-cooling tube 15, duct thermostat 6 and water-cooling tube 16 that water-cooling tube 13 links to each other with 14 other end.
As mentioned above, first outer flow channels and second outer flow channels are come conversion by duct thermostat 6, and this duct thermostat 6 is used as a passage converter.In this embodiment, first outer flow channels and second outer flow channels overlap in cooling water passage 16, thereby have simplified flow channel.
When control valve 10 from close the valve state transformation to opening the valve state in case the temperature (second predetermined value) of the cooling water when carrying out proper functioning can be configured to be higher than when duct thermostat 6 from open the valve state transformation to closing the valve state so that the cooling water temperature (first predetermined value) when second outer flow channels transforms to first outer flow channels fully.In this case, when control valve 10 being in close the valve state so that the cooling water that allows to contain gas when flowing to water-cooling tube 13 from the attachment portion around 23, has just formed first outer flow channels in a period of time.Thereby, make cooling water flow into the radiator 5 that is arranged in first outer flow channels, so can guarantee to make gas contained in the cooling water to be discharged to water tank 26 through spill pipe 25 from the top of radiator 5.As mentioned above, in the present invention, one end of second supply passage links to each other with the waste side of water pump, the other end links to each other with the cylinder block cooling water passage, and the outflow regulator is set between cylinder block cooling water passage and outer flow channels, wherein, by closing said outflow regulator, make cooling water flow to the cylinder head cooling water passage by the cylinder block cooling water passage and through the attachment portion from second supply passage.Thereby, utilize a very simple structure just can be discharged near the air pocket the attachment portion outside the motor from the cylinder head cooling water passage with cooling water.
Claims (9)
1, a kind of cooling unit that is used for internal-combustion engine, this cooling unit has first state of cooling, in this first state of cooling, cooling water is by first cooling system, second cooling system, and the 3rd cooling system flow, in said first cooling system, the cooling water of discharging from water pump flows out motor by the cylinder head cooling water passage, in said second cooling system, a part of cooling water by said cylinder head cooling water passage flows into the cylinder block cooling water passage that is provided with down through the attachment portion, and outflow motor, in said the 3rd cooling system, the cooling water of discharging from said water pump flows out motor by said cylinder block cooling water passage; This cooling unit also has second state of cooling, in this second state of cooling, cooling water flows by said first cooling system and one the 4th cooling system, in said the 4th cooling system, the cooling water of discharging from said water pump flows into said cylinder block cooling water passage, and flow into said cylinder head cooling water passage through said attachment portion, flow out motor then
Wherein, by stopping the startup of said the 3rd cooling system, said first state of cooling is transformed to said second state of cooling fully.
2, the cooling unit that is used for internal-combustion engine as claimed in claim 1, this cooling unit also comprises:
One first supply passage, an end of this first supply passage links to each other with the waste side of a water pump, and the other end links to each other with said cylinder head cooling water passage;
One outer flow channels, an end of this outer flow channels and said cylinder head cooling water passage link to each other with each bar passage in the cylinder block cooling water passage, and the other end links to each other with the suction side of said water pump;
One second supply passage, an end of this second supply passage links to each other with the waste side of said water pump, and the other end links to each other with said cylinder block cooling water passage;
One flows out regulator, be arranged between said cylinder block cooling water passage and the said outer flow channels,
Wherein said first cooling system is formed by first supply passage, cylinder head cooling water passage and outer flow channels,
Wherein said second cooling system is formed by first supply passage, cylinder head cooling water passage, attachment portion, cylinder block cooling water passage and outer flow channels,
Wherein said the 3rd cooling system is formed by second supply passage, cylinder head cooling water passage and outer flow channels,
Wherein said the 4th cooling system is formed by second supply passage, cylinder head cooling water passage, attachment portion, cylinder block cooling water passage and outer flow channels, and
Wherein, described the 3rd cooling system stops its operation so that first state of cooling is switched to second state of cooling by cutting out described outflow regulator.
3, the cooling unit that is used for internal-combustion engine according to claim 2 is characterized in that, the flow of first supply passage is greater than the flow of second supply passage.
4, the cooling unit that is used for internal-combustion engine according to claim 2 is characterized in that, second supply passage is provided with one and flows into regulator, and this inflow regulator can be regulated cooling water from the inflow of second supply passage to the cylinder block cooling water passage.
5, the cooling unit that is used for internal-combustion engine according to claim 2 is characterized in that, said outflow regulator comprises: a control valve, this control valve are set between cylinder block cooling water passage and the outer flow channels; With a controller, be used to control said control valve, control valve is opened or closed.
6, the cooling unit that is used for internal-combustion engine according to claim 5, it is characterized in that, when the temperature of cooling water was equal to or less than a predetermined value, said controller was controlled control valve, so that the restriction cooling water is from the outflow of cylinder block cooling water passage to outer flow channels.
7, the cooling unit that is used for internal-combustion engine according to claim 5 is characterized in that, by steering controller, just can at random open or close said control valve.
8, the cooling unit that is used for internal-combustion engine according to claim 2 is characterized in that, said outflow regulator is made of a duct thermostat.
9, the cooling unit that is used for internal-combustion engine according to claim 1, this cooling unit also comprises:
One first supply passage, an end of this first supply passage links to each other with the waste side of a water pump, and the other end links to each other with said cylinder head cooling water passage;
One first cooling water flow out of passage, and the one end links to each other with said cylinder head cooling water passage;
One second cooling water flow out of passage, and the one end links to each other with said cylinder block cooling water passage;
One first outside water channel, one end and said first cooling water flow out of passage and the said second other end that cooling water flow out of passage links to each other, and the other end links to each other with the suction side of said water pump through a radiator;
One second outside water channel, one end and said first cooling water flow out of passage and the said second other end that cooling water flow out of passage links to each other, and the other end is walked around said radiator and linked to each other with the suction side of said water pump;
One water tank links to each other with the top of said cooling unit;
One passage converter is used for when the temperature of cooling water is greater than or equal to first predetermined value cooling-water flow passage being transformed to the first outside water channel from the second outside water channel;
One flows out regulator, is arranged on said cylinder block cooling water passage and said second and cooling water flow out of between the passage;
Wherein said first cooling system be cooling water flow out of passage and is formed by first supply passage, cylinder head cooling water passage and first,
Wherein said second cooling system be cooling water flow out of passage and is formed by first supply passage, cylinder head cooling water passage, attachment portion, cylinder block cooling water passage and second,
Wherein said the 3rd cooling system be cooling water flow out of passage and is formed by second supply passage, cylinder head cooling water passage and second,
Wherein said the 4th cooling system be cooling water flow out of passage and is formed by second supply passage, cylinder block cooling water passage, attachment portion, cylinder head cooling water passage and first, and
Wherein, described the 3rd cooling system is by cutting out said outflow regulator, stop its operation and be greater than or equal to second predetermined value up to temperature of cooling water, this second predetermined value is greater than said first predetermined value, thereby first state of cooling is switched to second state of cooling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP329488/2001 | 2001-10-26 | ||
| JP2001329488A JP3871196B2 (en) | 2001-10-26 | 2001-10-26 | Cooling device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1414225A CN1414225A (en) | 2003-04-30 |
| CN1211570C true CN1211570C (en) | 2005-07-20 |
Family
ID=19145385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021460760A Expired - Fee Related CN1211570C (en) | 2001-10-26 | 2002-10-25 | Cooling device of internal-combustion engine and internal-combustion engine |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP3871196B2 (en) |
| KR (1) | KR100436605B1 (en) |
| CN (1) | CN1211570C (en) |
| DE (1) | DE10250157B4 (en) |
| MY (1) | MY131037A (en) |
| TW (1) | TW552347B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220765B (en) * | 2006-09-14 | 2011-05-04 | 本田技研工业株式会社 | Water cooling type internal combustion engine having radiator |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2005005803A1 (en) * | 2003-07-10 | 2006-10-26 | ヤマハ発動機株式会社 | engine |
| DE102007027719B4 (en) * | 2007-06-15 | 2015-05-13 | Audi Ag | Internal combustion engine with a heating circuit and a cooling circuit |
| WO2010106615A1 (en) * | 2009-03-16 | 2010-09-23 | トヨタ自動車株式会社 | Engine cooling device |
| JP2011236831A (en) * | 2010-05-11 | 2011-11-24 | Denso Corp | Cooling structure and cooling system of internal combustion engine |
| JP5257712B2 (en) | 2011-02-10 | 2013-08-07 | アイシン精機株式会社 | Engine cooling system |
| JP5257713B2 (en) | 2011-02-10 | 2013-08-07 | アイシン精機株式会社 | Vehicle cooling system |
| JP2012241610A (en) * | 2011-05-19 | 2012-12-10 | Toyota Motor Corp | Cooling device of internal combustion engine |
| CN102278224A (en) * | 2011-06-20 | 2011-12-14 | 昆明瑞尔机电科技有限公司 | Single-cylinder diesel engine parallel split cooling water jacket |
| US8739745B2 (en) * | 2011-08-23 | 2014-06-03 | Ford Global Technologies, Llc | Cooling system and method |
| CN103993947A (en) * | 2014-05-13 | 2014-08-20 | 浙江吉利控股集团有限公司 | Engine cooling system |
| KR101703615B1 (en) * | 2015-06-29 | 2017-02-07 | 현대자동차 주식회사 | Cylinder block water jacket structure having insert |
| JP6617746B2 (en) * | 2017-05-01 | 2019-12-11 | トヨタ自動車株式会社 | Cooling device for internal combustion engine |
| JP7222612B2 (en) * | 2018-05-17 | 2023-02-15 | 株式会社Subaru | engine |
| CN113833556B (en) * | 2020-06-24 | 2022-08-05 | 上海汽车集团股份有限公司 | Engine cooling system and method |
| JP7311549B2 (en) * | 2021-03-19 | 2023-07-19 | ダイハツ工業株式会社 | internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6299616A (en) * | 1985-10-24 | 1987-05-09 | Mazda Motor Corp | Engine cooling device |
| JPS62101816A (en) * | 1985-10-30 | 1987-05-12 | Mazda Motor Corp | Cooling device for engine |
| JPH05256131A (en) * | 1992-03-13 | 1993-10-05 | Nissan Motor Co Ltd | Engine cooling device |
| AT2106U1 (en) * | 1997-04-03 | 1998-04-27 | Avl List Gmbh | LIQUID-COOLED INTERNAL COMBUSTION ENGINE |
| JP3027740B2 (en) * | 1998-05-22 | 2000-04-04 | 富士精工株式会社 | Water-cooled engine cooling structure |
-
2001
- 2001-10-26 JP JP2001329488A patent/JP3871196B2/en not_active Expired - Fee Related
-
2002
- 2002-10-16 TW TW091123808A patent/TW552347B/en not_active IP Right Cessation
- 2002-10-18 MY MYPI20023892A patent/MY131037A/en unknown
- 2002-10-23 KR KR10-2002-0064795A patent/KR100436605B1/en active IP Right Grant
- 2002-10-25 CN CNB021460760A patent/CN1211570C/en not_active Expired - Fee Related
- 2002-10-28 DE DE10250157A patent/DE10250157B4/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220765B (en) * | 2006-09-14 | 2011-05-04 | 本田技研工业株式会社 | Water cooling type internal combustion engine having radiator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3871196B2 (en) | 2007-01-24 |
| MY131037A (en) | 2007-07-31 |
| TW552347B (en) | 2003-09-11 |
| KR100436605B1 (en) | 2004-06-22 |
| DE10250157B4 (en) | 2013-04-04 |
| DE10250157A1 (en) | 2003-05-15 |
| JP2003129841A (en) | 2003-05-08 |
| CN1414225A (en) | 2003-04-30 |
| KR20030035930A (en) | 2003-05-09 |
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Address after: No. 21, No. 3, Dingmu, No. 1, Toshiba, Tokyo, Japan Patentee after: Mitsubishi Jidosha Kogyo Kabushiki Kaisha Address before: Tokyo, Japan Patentee before: Mitsubishi Jidosha Kogyo Kabushiki Kaisha |
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