CN1330217A - Cooling device of water-cooled engine - Google Patents
Cooling device of water-cooled engine Download PDFInfo
- Publication number
- CN1330217A CN1330217A CN01117574A CN01117574A CN1330217A CN 1330217 A CN1330217 A CN 1330217A CN 01117574 A CN01117574 A CN 01117574A CN 01117574 A CN01117574 A CN 01117574A CN 1330217 A CN1330217 A CN 1330217A
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- wax
- path
- housing
- thermostat
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- 238000001816 cooling Methods 0.000 title claims abstract description 27
- 230000000630 rising effect Effects 0.000 claims abstract description 49
- 239000000498 cooling water Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 230000008602 contraction Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000005465 channeling Effects 0.000 claims description 4
- 239000001993 wax Substances 0.000 description 51
- 238000010586 diagram Methods 0.000 description 12
- 230000004888 barrier function Effects 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
-
- 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
- F01P11/028—Deaeration devices
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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
- F01P11/0285—Venting devices
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Temperature-Responsive Valves (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Cooling device of water-cooled engine, where a wax case of the upper end is faced to a water chamber communicated to a by-pass passage and formed inside a housing is made slidable in response to expansion and shrinkage of wax in the housing, the case is engaged to communicate the water chamber with an upper side passage portion when the wax is shrinked, an inlet hole communicated with a lower side passage portion of the rising passage and an outlet hole communicated with the upper side passage portion of the passage are provided in the housing to be blocked by the wax case when the wax is shrinked, and the inlet hole is communicated with the water chamber via an air-bleeding passage. So it enhances an air-bleeding property in a rising passage while eliminating an air-bleeding bolt and the like to avoid increase of the number of part items, in a cooler for an engine provided with a thermostat for switching a cooling water flowing passage in response to a temperature of cooling water in a midway of the rising passage for making the cooling water flow.
Description
The present invention relates to a kind of cooling unit of water cooled engine, particularly relate to a kind of cooling unit that in the way of the rising path that cooling water is circulated upward, is provided with the motor of the thermostat of can be according to the temperature of this cooling water and the circulation pathway of cooling water being switched.
In the past, such cooling unit was for example opened existing report on the flat 4-75129 communique etc. real.On this device: have the lower part of frame of thermostat, be provided with the inlet opening that is connected with lower side passage portion in the path that rises; On the intermediate portion of housing, be provided with the exit orifice that is connected with upper side passage portion in the path that rises; The by-pass hole that is connected with the bypass path is arranged on the top of above-mentioned housing; The wax box is housed in the housing, and can and make when wax is expansion between inlet opening and the top position that exit orifice is connected at the lower position that by-pass hole is connected with exit orifice and slide.
Then, when on cooling unit, injecting cooling water, must consider the eliminating of the air on main circulation loop and the secondary circulation loop.But on the cooling unit that has used above-mentioned existing thermostat, on the thermostat of the intermediate portion that is positioned at the rising path, between inlet opening and exit orifice, there is difference of height, makes the cooling water path in thermostat become tortuous shape.Therefore, for example in the occasion of being had in order to carry on automatic double wheel vehicle cooling unit is constituted along the vertical direction compactly, because must make the angle of inclination of rising path is small angle, so carrying out to spend the more time when air is got rid of; And get rid of parts such as bolt for avoiding this situation that air just need be installed on the rising path.
The present invention proposes in view of such problem, its objective is the cooling unit of the water cooled engine that a kind of such formation is provided: be provided with thermostat in that cooling water is produced in the way of rising path of ascending motion upward; And when not needing air to get rid of parts such as bolt, avoiding the increase of number of components, improve the air of rising path is got rid of performance.
For achieving the above object, the present invention program's 1 described invention relates to a kind of cooling unit with water cooled engine of main circulation loop, secondary circulation loop and thermostat.Wherein, this main circulation loop is linking water jacket, radiator, water pump and the above-mentioned water jacket of engine body in turn, and is constituting its part path by the rising path that can make cooling water produce circulation upward; Secondary circulation loop is made of the bypass path of the above-mentioned radiator that making a circulation and an institute of above-mentioned main circulation loop; And thermostat is set in the way of above-mentioned rising path, can be according to the temperature of cooling water, make that above-mentioned rising path is interdicted, in above-mentioned secondary circulation loop, make cooling water produce circulation and circuit state and make that above-mentioned bypass path is interdicted, cooling water is produced between circulation and circuit state switch.The feature of cooling unit with water cooled engine of above-mentioned formation is, it has following formation: above-mentioned thermostat has housing, the wax box, with parts such as waxes, wherein, this housing has carrying out crosscut in the way of above-mentioned rising path, along the sliding eye that is extending up and down, the wax box can be entrenched in the above-mentioned sliding eye slidably, and its upper-end surface is facing to being connected with above-mentioned bypass path, be formed at the hydroecium in the housing, and wax is built in this wax box, and the expansion that can produce according to the temperature variation because of cooling water and contraction make above-mentioned wax box produce sliding action; Above-mentioned wax box is housed in the above-mentioned sliding eye, and above-mentioned hydroecium is connected with the upper side passage portion of rising path; On above-mentioned housing, be provided with inlet opening and exit orifice to the inner face opening of above-mentioned sliding eye, wherein, this inlet opening is connected with lower side passage portion in the above-mentioned rising path, exit orifice is connected with upper side passage portion in the above-mentioned rising path, and is made by above-mentioned wax box when the contraction of above-mentioned wax and interdicted between this discrepancy oral pore; Further, between above-mentioned inlet opening and hydroecium, through the air of the air channeling conduct in the cooling water being got rid of path and being interconnected.
According to the 1 described invention of the invention described above scheme, on the housing of thermostat, towards the inlet opening of the inner face opening of the sliding eye that the wax box produce to be slided and exit orifice with when the contraction of wax by the wax box the mode of having interdicted mutually and being set up; And the inlet opening is connected with the lower side passage portion of rising path, and exit orifice is connected with the upper side passage portion of rising path.Thus, can not produce difference of height at the rising path that is arranged on the part of seizing thermostat on both sides by the arms; Even in the occasion of having to cooling unit is constituted along the vertical direction compactly, the angle of inclination of the path that also will not rise is made as small angle as existing; Can in the rising path, make air promptly produce circulation.And, because the hydroecium that the inlet opening is connected with the bypass path, be formed at the top in the housing through air eliminating path is being connected.So the air of the lower side passage portion in the rising path promptly can be discharged on the bypass bypass side, improve air and get rid of performance.
The feature of the present invention program's 2 described inventions is, on the basis of such scheme 1, described thermostat is housed in chimeric the accommodating in the case of above-mentioned housing of having; And form above-mentioned air by the outside of groove that is located at the inner face of accommodating case and above-mentioned housing and get rid of path.So according to such formation, air eliminating path is making a circulation radiator and is forming, and gets rid of performance thereby can further improve air.
The feature of the present invention program's 3 described inventions is that on the basis of such scheme 1 or 2 described inventions, above-mentioned radiator, above-mentioned water pump and above-mentioned thermostat are installed in roughly the same height on the above-mentioned engine body.So according to such formation, can with cooling unit along the vertical direction compactness be installed on the engine body with compiling.
Fig. 1 is all profiles of trail bike type automatic double wheel vehicle.
Fig. 2 is the amplification profile diagram along the 2-2 line of Fig. 1.
Fig. 3 be Fig. 2 want portion's enlarged view.
Fig. 4 is the sectional view along the 4-4 line of Fig. 2.
Fig. 5 is the power unit figure that sees from the direction of arrow of the 5-5 line of Fig. 1.
Fig. 6 is the amplification profile diagram along the 6-6 line of Fig. 2.
The profile diagram of thermostat when Fig. 7 is low-temperature condition.
The profile diagram of thermostat when Fig. 8 is the condition of high temperature.
Fig. 9 is the sectional view along the 9-9 line of Fig. 7.
Figure 10 is the 2nd embodiment's the profile corresponding to Fig. 6.
The profile diagram of thermostat when Figure 11 is low-temperature condition.
The profile diagram of thermostat when Figure 12 is the condition of high temperature.
Below, according to the embodiments of the invention that in appended drawing, show, example of the present invention is described.
Fig. 1～Fig. 9 has shown the 1st embodiment of the present invention.Fig. 1 is all profiles of trail bike type automatic double wheel vehicle.Fig. 2 is the amplification profile diagram along the 2-2 line of Fig. 1.Fig. 3 be Fig. 2 want portion's enlarged view.Fig. 4 is the sectional view along the 4-4 line of Fig. 2.Fig. 5 is the power unit figure that sees from the direction of arrow of the 5-5 line of Fig. 1.Fig. 6 is the amplification profile diagram along the 6-6 line of Fig. 2.The profile diagram of the thermostat when Fig. 7 is low-temperature condition.The profile diagram of the thermostat when Fig. 8 is the condition of high temperature.Fig. 9 is the sectional view along the 9-9 line of Fig. 7.
At first in Fig. 1, have the front-wheel Wf that by 11 steerings of handlebar and the vehicle frame of the automatic double wheel vehicle V of the trail bike type of the trailing wheel Wr that driven by shuttle-type power unit P under be divided into 3 parts: side arm 12, central frame 13 and after-frame 14.Side arm 12 is made of the aluminium alloy casting product that have a head pipe 12a with being integral, manage 12b and the 12c of pedal tread support part down.The central frame 13 of supporting power unit P that can the easy on and off swing through pivot 15 is made of the casting product of aluminum alloy, and is bonded on the rear end of above-mentioned side arm 12.The after-frame 14 that extends to the back upper place of power unit P is made of the pipe fitting of ring-type, and is supporting fuel tank 16 in the above.On central frame 13, supporting cabinet 17.But be covered with cabinet 17 and fuel tank 16 by having present 18 cover 19 with being integral freely openable.
Combine to the belt type continuously variable transmission T of car body rear extension by water-cooled single cylinder 4 two-stroke engine E that cylinder is disposed towards car body the place ahead with from the left surface of motor E with being integral and to form power unit P.Be bonded on the rear end of central frame 13 through rear shock absorber 20 above the rear portion of belt type continuously variable transmission T.On belt type continuously variable transmission T, supporting air filter 21; On the right flank of belt type continuously variable transmission T, supporting baffler 22; Below motor E, supporting the master bracket 23 that to hold up and to lodge.
In Fig. 2～Fig. 4, the engine body 24 of motor E has along the 1st and the 2nd motor portion 27,28 bent axle 25 and that cut apart by the folding face 26 that vertically extends.The 1st motor portion 27 is constituting half 27b of of cylinder block 27a and crank box; The 2nd motor portion 28 is constituting second half one of crank box.On the front end of the 1st motor portion 27, in conjunction with constituting the cylinder head 29 of engine body 24 with the 1st and the 2nd motor portion 27,28.On the front end of cylinder head 29 in conjunction with cylinder head cover 30.On the right flank of the 1st and the 2nd motor portion 27,28 in conjunction with generating hood 31.
Belt type continuously variable transmission T has right side cover portion 32 and the left side cover portion 33 that is mutually combining.The anterior right flank of right side cover portion 32 is bonded on the left surface of the 1st and the 2nd motor portion 27,28.Again, on the rear portion right flank of right side cover portion 32, in conjunction with retarder cover 34.
The piston 36 that can be entrenched in the inside of the cylinder 35 with the 1st motor portion 27 is connected through connecting rod 37 and bent axle 25 with being free to slide.On cylinder head 29, supporting the camshaft 38 that can freely rotate.Being located at Aspirating valves on the cylinder head 29 and outlet valve (not shown) is being driven by this camshaft 38 and is carrying out on-off action.Contain timing chain 40 in the chain path 39 in being located at the 1st motor portion 27.This timing chain 40 is wound onto on driving sprocket wheel 41 that is located on the bent axle 25 and the driven sprocket 42 that is located on the camshaft 38.Thus, when bent axle 25 changeed 2 circles, camshaft 38 changeed 1 circle.
On the left end of the bent axle 25 of the inside that is projected into right side cover portion 32 and left side cover portion 33, be provided with drive pulley 43.This drive pulley 43 has the fixed side pulley halfbody 44 that is fixed on the bent axle 25 and can produce near taking turns halfbody 45 with the movable sideslip of detaching motion with respect to fixed side pulley halfbody 44.By along with the increase of the rotation number of bent axle 25 outside radial direction the centrifugal hammer 46 of side shifting, and make movable sideslip wheel halfbody 45 be subjected to the potential energy effect to direction near fixed side pulley halfbody 44.
Be located at by the follow-up pulley 48 on the output shaft of being supported between the rear portion of right side cover portion 32 and the retarder cover 34 47 and have fixed side pulley halfbody 49 and the movable wheel halfbody 50 that breaks away, wherein this fixed side pulley halfbody 49 can be supported on the output shaft 47 with relatively rotating, and movable break away wheel halfbody 50 with respect to fixed side pulley halfbody 49 can carry out near with the action that separates.The movable wheel halfbody 50 that breaks away is subjected to the potential energy effect to fixed side pulley halfbody 49 by spring 51.Between fixed side pulley halfbody 49 and output shaft 47, be provided with when being accompanied by rotation that the engine rotation number surpass to set and counting and become the centrifugal clutch 52 of power delivery status again.And, between drive pulley 43 and follow-up pulley 48, be wound with jointless V-shape belt 53.
Between right side cover portion 32 and retarder cover 34, supporting the jack shaft 54 and the axletree 55 that parallel with above-mentioned output shaft 47.Between output shaft 47, jack shaft 54 and axletree 55, be provided with train of reduction gears 56.And, running through retarder cover 34 backs from the right-hand member of the outstanding axletree 55 in right side, be provided with trailing wheel Wr as driving wheel.
So the rotary motive power of bent axle 25 is passed on the drive pulley 43, be passed on the trailing wheel Wr through V-shape belt 53, follow-up pulley 48, centrifugal clutch 52 and train of reduction gears 56 from this drive pulley 43 again.
The alternator 57 that is located at the right side of bent axle 25 is covered with by generating hood 31.On the right side of this generating hood 31, be provided with radiator 58.For cooling air being provided for this radiator 58, the cooling fan 59 that is fixed on the right-hand member of bent axle 25 is configured between alternator 57 and the radiator 58.Thus, the heat release capacity of radiator 58 always wants the heating value of ratio engine E to want big.
Cooling fan 59 and radiator 58 are covered with by 60 on the plastic cover that is attached on the generating hood 31.On the outer side surface of this cover 60, be provided with the venetian blind 61 that is used for importing air from the outside.
On the cylinder block 27a of the 1st motor portion 27 and cylinder head 29, be provided with water jacket 62.To the water pump 63 of the underfeed cooling water of the cylinder block 27a side of this water jacket 62 so that the roughly identical mode of its height and position and be attached at the right-hand member of camshaft 38 with above-mentioned radiator 58.
On the right flank of cylinder head 29 in conjunction with accommodating case 65.In accommodating case 65, this is accommodating thermostat 64A.Accommodating above-mentioned water pump 63 by cylinder head 29 with accommodating in 65 cingens spaces of case.That is, radiator 58, water pump 63 and thermostat 64A are installed on the engine body 24 to be roughly identical height.
Simultaneously with reference to Fig. 5, in the mode that the top with water jacket 62 is connected, an end of the cooling water pipeline 68 that on cylinder head 29, continuing.The other end of this cooling water pipeline 68 is continued on the connecting-tube nozzle 70 that can be opened and closed upper end open portion, can close by protection cap 71.This connecting-tube nozzle 70 is attached in the mode of swinging with radiator 58 and is installed in being covered with on the back backplate 66 of trailing wheel Wf from the top on the power unit P.Again, connecting-tube nozzle 70 has flexual supply channel 69 and on the water-supplying mouth 58a of the superior posterior that is being located at radiator 58 of being continued through rubber hose etc.
On connecting-tube nozzle 70, be provided with and make cooling water produce the spill pipe 70a of overflow.This spill pipe 70a is continuing mutually with water reservoir not shown in the figures.At the outlet end 58b of the preceding bottom that is located at radiator 58 with accommodate between the case 65, continued by cooling water pipeline 72.This cooling water pipeline 72 in accommodating case 65 thermostat 64A and by being continued on the suction port of water pump 63.Again, the water jacket 62 of accommodating in case 65 and the 1st motor portion 27 is being continued by cooling water pipeline 73.
That is, above-mentioned water jacket 62, radiator 58 and water pump 63 are continuing mutually through cooling water pipeline 68, connecting-tube nozzle 70, water supply path 69 and cooling water pipeline 72,73, and constitute main circulation loop 75.In this main circulation loop 75, behind water jacket 62 and radiator 58, turn back to the mode of water pump 63 with the cooling water of from water pump 63, discharging, cooling water is circulated and circulate.
In Fig. 6, on above-mentioned main circulation loop 75, from the outlet end 58b of the preceding bottom of radiator 58 to the suction port of water pump 63, the rising path 76 that cooling water is circulated upward by above-mentioned suction port and interconnecting from the above-mentioned outlet end 58b of below to the top.This rising path 76 is made of lower side passage portion 77 and upper side passage portion 78.Wherein, this lower side passage portion 77 is by cooling water pipeline 72 be arranged on the passage portion branch that are connected with cooling water pipeline 72 of accommodating in the case 65 and form; And upper side passage portion 78 is arranged on to accommodate in the case 65 and with the suction port of water pump 63 and is connected.Thermostat 64A is housed in the mode between two passage portion 77,78 and accommodates in the case 65.
With the adjacent position of cooling water pipeline 68 on, the end that the top with water jacket 62 of the bypass line 79 of circuitous the radiator 58 that continuing on cylinder head 29 is communicating.The other end of this bypass line 79 is continued on the cover 80 then that links to each other with above-mentioned top of accommodating case 65.So, bypass line 79 in accommodating case 65 thermostat 64A and the above-mentioned upper side passage portion 78 that can communicate with the suction port of water pump 63 be connected.By in above-mentioned main circulation loop 75 section between water pump 63 and the water jacket 62 and section between thermostat 64A and the water pump 63 and contain bypass line 74 and be formed at the bypass path 81 between above-mentioned cover 80 and the cylinder head 34 and constituting secondary circulation loop 82.
Thermostat 64A can switch between following two condition according to the temperature of cooling water: open bypass path 81 in blocking rising path, thus in secondary circulation loop 82, make cooling water produce circulation and circuit state; With blocking bypass path 81 in open rising path 76, thereby in main circulation loop 75, make cooling water produce circulation and circuit state.So thermostat 64A is set between the lower side passage portion 77 and upper side passage portion 78 of rising path 76.Can be according to the temperature of cooling water to making cooling water and in which side of main circulation loop 75 and secondary circulation loop 82, produce circulation and circulation being switched.
Simultaneously with reference to Fig. 7 and Fig. 8, thermostat 64A has following formation: have with the lower side passage portion of the rising path 76 of crosscut main circulation loop 75 and the mode between the upper side passage portion 77,78 and along extending up and down and its lower end be the housing 86A that the round-ended cylinder shape is arranged of the sliding eye that the end is arranged 85 of sealing; Can be entrenched in the wax box 87 in the above-mentioned sliding eye 85 slidably; Compression is arranged on the spring 88 between housing 86A and the wax box 87; And can corresponding to above-mentioned wax box 87 is produced slide and be built in wax 89 in this wax box 87.
On the end of housing 86A, be equipped with the end that is covered with housing 86A by the sealed member that the round-ended cylinder shape is arranged 92 that elastic material constituted.On the central part of the dead end inner face of sealing parts 92, the end of housing 86A is exposing with the form of tip enhancing portion 84.Again, the upper end of the housing 86A that is opening contacts with cover 80; On the upper end side inner face of this housing 80A, Brake drum 93 is installed.
In wax box 87, be built-in with and be filled in above-mentioned barrier film 96 and cover wax 89 between 95.Corresponding to the expansion and the contraction that produce because of temperature variation of wax 89, barrier film 96 can produce distortion.On the other hand, in above-mentioned guide cylinder 97, from the opposition side of above-mentioned barrier film 96, sequentially chimeric the bar-shaped piston 98 that can slide, discoid plate 99 and rubber piston 100.In the wax box 87 of section between rubber piston 100 and barrier film 96, filling the distortion that is used for barrier film 96 and is delivered to medium 101 on the above-mentioned rubber piston 100.
Between wax box 87 and Brake drum 93, be provided with and make wax box 87 be subjected to spring 88 to the potential energy effect of sealed member 92 sides again.When the temperature of cooling water lower, when wax 89 is in contraction state, wax box 87 be in as shown in Figure 7 with sealed member 92 contacted positions on.Then when the temperature of cooling water raises, when wax 89 produces and expands, along with barrier film 96 to produce crooked form to the downside of Fig. 8 and to deform, piston 98 is forced out from guide cylinder 97, wax box 87 can be when compressing spring 88, as shown in Figure 8, to the i.e. top and sliding of a side of leaving sealed member 92.
On housing 86A, be provided with inlet opening 102, exit orifice 103 and by-pass hole 104.Wherein, the lower side passage portion 77 in the rising path of this inlet opening 102 and main circulation loop 75 is connected; Exit orifice 103 is connected with upper side passage portion 78 in the above-mentioned rising path 76; Inlet opening 102 and exit orifice 103 with the same diameter line of above-mentioned sliding eye 85 on to the form of the inner face opening of this sliding eye 85 and be set up; By-pass hole 104 can make above-mentioned hydroecium 90 be connected with upper side passage portion 78, and with the adjacent mode of the upper side of above-mentioned exit orifice 103 and be set up.
Above-mentioned inlet opening 102 and exit orifice 103 on the following position to be set on the housing 86A towards the form of the inner face opening of above-mentioned sliding eye 85: when above-mentioned wax 89 serves as when shrinking, as shown in Figure 7, interdicted by wax box 87 between this discrepancy oral pore; And when wax 89 is expansion, because the slip of wax box 87 as shown in Figure 8, obtains between this discrepancy oral pore being communicated with.Again, by-pass hole 104 is being set on the following position on the housing 86A: when wax 89 was contraction, this by-pass hole 104 can make hydroecium 90 be connected with upper side passage portion 78; And when the slip of the wax box 87 that produces corresponding to the expansion because of wax 89 made inlet opening 102 and 103 of exit orifices obtain opening, as shown in Figure 8, this by-pass hole 104 can be obtained blocking by above-mentioned wax box 87.
Between above-mentioned hydroecium 90 and the above-mentioned inlet opening 102 through the air of the air channeling conduct in the cooling water being got rid of path 105 and being interconnected.This air is got rid of path 105 and is being formed by groove on the inner face that is located at the mounting hole 91 of accommodating case 65 106 and the outside with housing 86A of thermostat 64A.
Below, the 1st embodiment's effect is described.On the housing 86A of thermostat 64A, be provided with the sliding eye 85 that is configured in and makes wax box 87 to produce slip and be inlet opening 102 and exit orifice 103 on the same diameter line.Because inlet opening 102 is connected with lower side passage portion 77 as the rising path 76 of the via positions of main circulation loop 75, and exit orifice 103 is connected with the upper side passage portion 78 of rising path 76, so on the part of seizing thermostat 64A on both sides by the arms, on rising path 76, can not produce difference of height.Therefore, even having to along the vertical direction and the compact occasion that constitutes with cooling unit, also will the not rise angle of inclination of path 76 is set at small angle as existing, but can be so that air promptly produces circulation in rising path 76 mode is set at bigger value with the angle of inclination of rising path 76.
And, because in the hydroecium 90 part and that be formed at the top in the housing 86A that constitutes bypass path 81, extract path 105 and be communicated with inlet opening 102 through air, so the air in the lower side passage portion 77 in rising path 76 promptly can be discharged on bypass path 81 sides.
Consequently, though in the way of the rising path 76 that cooling water is circulated upward, being provided with thermostat 64A, also can be when air needn't be set get rid of bolt etc., avoid the increase of number of components, the air that improves from rising path 76 is got rid of performance.
Again, because the housing 86A of thermostat 64A is housed in and accommodates in the case 65, and forming above-mentioned air by the outside that is located at groove 106 on the inner face of accommodating case 65 and housing 86A and get rid of path 105, so forming air evacuation aperture 105 in the mode of the thermostat 64A that making a circulation.Thus, can further improve air and get rid of performance.
Further, owing to radiator 58, water pump 63 and thermostat 64A are installed on the engine body 24 with roughly the same height, be installed on the engine body 24 so cooling unit can be compiled along the vertical direction compactly.As shown in this embodiment, constitute with stepless speed variator T power unit P, and can swingingly be supported on the engine body 24 of the motor E on the vehicle frame F, by above-mentioned cooling unit is compiled installation along the vertical direction compactly, just can reduce required swing space, help the lift-launch on the vehicle frame F.
Figure 10～Figure 12 has shown the 2nd embodiment of the present invention.Figure 10 be with the 1st embodiment in the corresponding profile of Fig. 6.The profile diagram of the thermostat when Figure 11 is low-temperature condition.The profile diagram of the thermostat when Figure 12 is the condition of high temperature.With the corresponding part of above-mentioned the 1st embodiment on, used same reference marks.
Thermostat 64B is set between the lower side passage portion 77 and upper side passage portion 78 as the rising path 76 of a part of path of main circulation loop 75, and can be according to the temperature of cooling water to making cooling water produce circulation in which side of main circulation loop 75 and secondary circulation loop 82 and circulation being switched.
The housing 86B of thermostat 64A both can be integrally formed on the cylinder head 29 of engine body 24, also can be the parts that are attached on this cylinder head 29.In housing 86B, be provided with its lower end and be sliding eye 85 inaccessible and that extend up and down on the edge; The upper end of housing 86B is inaccessible by cover 80 ' institute.
Chimeric the wax box 87 that can slide in sliding eye 85; Compression is being provided with spring 88 between cover 80 and wax box 87.
On housing 86B, be provided with inlet opening 102 ' and exit orifice 103 ' in mode on for same diameter line to the inner face opening of above-mentioned sliding eye 85 with above-mentioned sliding eye 85.Wherein, this inlet opening 102 ' is connected with lower side passage portion 77 in the rising path 76 of main circulation loop 75; And this exit orifice 103 ' is connected with upper side passage portion 78 in above-mentioned rising path 76.
Above-mentioned inlet opening 102 ' forms the cone-shaped that its bore can diminish when the inner face of close sliding eye 85.Again, exit orifice 103 ' is formed on the housing 86B to make by 87 superposed forms of the part that can not interdict of wax box when the contraction of wax 89.Work as the by-pass hole 04 ' that hydroecium 90 is connected with upper side passage portion 78 in the top of exit orifice 103 '.
And, between above-mentioned inlet opening 102 ' and hydroecium 90, through the air of the air channeling conduct in the cooling water being got rid of path 107 and being interconnected.In the mode that access 102 ' is connected when the contraction of wax 89 with hydroecium 90, this air is got rid of path 107 and is formed the groove shape on the top of the inlet opening 102 ' of cone-shaped.
By the 2nd embodiment, also can obtain identical effect with above-mentioned the 1st embodiment.Particularly, because wax box 87 produces with engine body 24 with the path of cooling system and directly contacts, (phenomenon of ォ-バ シ ュ-ト) further improves cooling performance for vibration (Ha Application チ Application ダ) that produces so can prevent to follow the variation of coolant water temperature and overbump.
More than, embodiments of the invention are illustrated.But the present invention has more than and is limited to the foregoing description.Only otherwise break away from, various change designs can be arranged in the present invention described in the scope of claim.
As mentioned above, according to the present invention program's 1 described invention,, also can set the angle of inclination of rising path bigger, and make air promptly produce circulation even in the occasion of having to cooling unit is constituted along the vertical direction compactly; The air of the lower side passage portion in the rising path promptly can be discharged on the bypass passage side; In the increase of avoiding number of components, improve air and get rid of performance.
According to the present invention program's 2 described inventions, owing to forming air, the thermostat that making a circulation gets rid of path, get rid of performance so can further improve air.
Further, according to the present invention program's 3 described inventions, cooling unit can be compiled along the vertical direction compactly and be installed on the engine body.
Claims (3)
1. the cooling unit of a water cooled engine, it comprises main circulation loop (75), secondary circulation loop (82) and thermostat (64A, 64B); Wherein, above-mentioned main circulation loop (75) is sequentially linking water jacket (62), radiator (58), water pump (63) and the above-mentioned water jacket (62) of engine body (24), and by the rising path (76) that cooling water is circulated upward as its part path; Above-mentioned secondary circulation loop (82) is made of the bypass path (81) of the above-mentioned radiator (58) that making a circulation and the part of above-mentioned main circulation loop (75); Above-mentioned thermostat (64A, 64B) is arranged in the way of above-mentioned rising path (76), can be according to the temperature of cooling water, by cutting off above-mentioned rising path (76), become and cooling water is circulated and circuit state and cooling water is circulated and the circuit state in above-mentioned main circulation loop (75) in above-mentioned secondary circulation loop (82) by cutting off above-mentioned bypass path (81), becoming; It is characterized in that: above-mentioned thermostat (64A, 64B) has housing (86A, 86B), wax box (87), and wax (89), wherein, described housing (86A, 86B) have in the way of the above-mentioned rising path of crosscut (76), and along the sliding eye (85) that is extending up and down, wax box (87) can be entrenched in the above-mentioned sliding eye (85) slidably, simultaneously its upper-end surface is facing to being connected with above-mentioned bypass path (81), be formed at housing (86A, 86B) Nei hydroecium (90), and wax (89) is built in this wax box (87), and can make above-mentioned wax box (87) produce sliding action corresponding to the expansion that is produced by the temperature variation of cooling water and contraction; Above-mentioned wax box (87) is entrenched in the above-mentioned sliding eye (85), can when the contraction of above-mentioned wax (89) above-mentioned hydroecium (90) be connected with the upper side passage portion (78) of above-mentioned rising path (76); On above-mentioned housing (86A, 86B), be provided with inlet opening (102,102 ') and exit orifice (103,103 ') to the inner face opening of above-mentioned sliding eye (85), wherein, this inlet opening (102,102 ') is connected with lower side passage portion (77) in the above-mentioned rising path (76), exit orifice (103,103 ') is connected with upper side passage portion (78) in the above-mentioned rising path (76), and is obtained blocking when the contraction of above-mentioned wax (89) each other by above-mentioned wax box (87); Further, between above-mentioned inlet opening (102,102 ') and hydroecium (90), through the air of the air channeling conduct in the cooling water being got rid of path (105,107) and being interconnected.
2. the cooling unit of water cooled engine as claimed in claim 1, it is characterized in that: above-mentioned thermostat (64A) is housed in chimeric the accommodating in the case (65) of above-mentioned housing (86A) of having, and forms above-mentioned air by the outside that is located at groove (106) on the inner face of accommodating case (65) and above-mentioned housing (86A) and gets rid of path (105).
3. the cooling unit of water cooled engine as claimed in claim 1 or 2, it is characterized in that: above-mentioned radiator (58), above-mentioned water pump (63) and above-mentioned thermostat (64A, 64B) are installed in roughly the same height on the above-mentioned engine body (24).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP205568/2000 | 2000-07-03 | ||
| JP2000205568A JP3819681B2 (en) | 2000-07-03 | 2000-07-03 | Water cooling engine cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1330217A true CN1330217A (en) | 2002-01-09 |
| CN1131934C CN1131934C (en) | 2003-12-24 |
Family
ID=18702630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01117574A Expired - Fee Related CN1131934C (en) | 2000-07-03 | 2001-07-03 | Cooling device of water-cooled engine |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP3819681B2 (en) |
| KR (1) | KR100370673B1 (en) |
| CN (1) | CN1131934C (en) |
| BR (1) | BR0102622B1 (en) |
| ES (1) | ES2197759B2 (en) |
| ID (1) | ID30592A (en) |
| IT (1) | ITTO20010635A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106414942A (en) * | 2014-05-29 | 2017-02-15 | 福特汽车萨纳伊股份有限公司 | A degassing system |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4444056B2 (en) | 2004-09-30 | 2010-03-31 | 本田技研工業株式会社 | Engine cooling structure |
| JP4570495B2 (en) * | 2005-03-24 | 2010-10-27 | 本田技研工業株式会社 | Air vent structure for water-cooled internal combustion engine |
| JP4400885B2 (en) * | 2005-06-10 | 2010-01-20 | 日本サーモスタット株式会社 | Thermostat unit |
| CN100443703C (en) * | 2006-05-10 | 2008-12-17 | 潍柴动力股份有限公司 | Improved heat exchanger of engine |
| JP7354808B2 (en) | 2019-12-03 | 2023-10-03 | スズキ株式会社 | engine cooling system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2296641A (en) * | 1940-09-27 | 1942-09-22 | Chrysler Corp | Engine water circulating system |
| GB2321957B (en) * | 1997-02-04 | 2000-10-18 | Perkins Ltd | A cooling system for an internal combustion engine |
| JP3582055B2 (en) * | 1999-01-27 | 2004-10-27 | 日本サーモスタット株式会社 | Mounting structure of thermostat |
-
2000
- 2000-07-03 JP JP2000205568A patent/JP3819681B2/en not_active Expired - Fee Related
-
2001
- 2001-06-29 ES ES200101522A patent/ES2197759B2/en not_active Expired - Fee Related
- 2001-07-02 BR BRPI0102622-4A patent/BR0102622B1/en not_active IP Right Cessation
- 2001-07-02 ID IDP00200100519D patent/ID30592A/en unknown
- 2001-07-02 IT IT2001TO000635A patent/ITTO20010635A1/en unknown
- 2001-07-03 CN CN01117574A patent/CN1131934C/en not_active Expired - Fee Related
- 2001-07-03 KR KR10-2001-0039426A patent/KR100370673B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106414942A (en) * | 2014-05-29 | 2017-02-15 | 福特汽车萨纳伊股份有限公司 | A degassing system |
| CN106414942B (en) * | 2014-05-29 | 2019-04-12 | 福特汽车萨纳伊股份有限公司 | Off gas system |
Also Published As
| Publication number | Publication date |
|---|---|
| ID30592A (en) | 2002-01-03 |
| KR100370673B1 (en) | 2003-02-05 |
| KR20020003300A (en) | 2002-01-12 |
| BR0102622A (en) | 2002-02-13 |
| CN1131934C (en) | 2003-12-24 |
| BR0102622B1 (en) | 2009-05-05 |
| ES2197759B2 (en) | 2005-05-16 |
| JP2002021562A (en) | 2002-01-23 |
| ES2197759A1 (en) | 2004-01-01 |
| JP3819681B2 (en) | 2006-09-13 |
| ITTO20010635A1 (en) | 2003-01-02 |
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