CN1281937A - Mounting structure of thermostatic device of water-cooled internal-combustion engine - Google Patents
Mounting structure of thermostatic device of water-cooled internal-combustion engine Download PDFInfo
- Publication number
- CN1281937A CN1281937A CN00120285.5A CN00120285A CN1281937A CN 1281937 A CN1281937 A CN 1281937A CN 00120285 A CN00120285 A CN 00120285A CN 1281937 A CN1281937 A CN 1281937A
- Authority
- CN
- China
- Prior art keywords
- radiator
- thermostat
- cooling water
- combustion engine
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 38
- 239000000498 cooling water Substances 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000010276 construction Methods 0.000 claims description 24
- 238000009434 installation Methods 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 description 43
- 239000002826 coolant Substances 0.000 description 15
- 230000008093 supporting effect Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000004043 responsiveness Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000002277 temperature effect Effects 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
-
- 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
- F01P2070/00—Details
Landscapes
- 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)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
In an attachment structure for thermostat 82 for detecting cooling water temperature in a water-cooled internal combustion engine 30 having a radiator 41 attached to an upper part of the internal combustion engine 30, the thermostat 82 is provided inside a cooling water circulating path, so as to project into a tank (housing chamber 41a) of the radiator 41. The thermostat 82 is attached in between a cooling water outlet 43a of the internal combustion engine 30 and a cooling water inlet 130 of the radiator 41, so as to improve assemblability and reduce cost by simplifying the installation structure of a thermostat.
Description
The present invention relates to the mounting construction of the thermostat of water-cooled engine, particularly relate to a kind of thermostat mounting construction that radiator is installed on the water-cooled engine on internal-combustion engine top, the mounting construction of this thermostat can make the mounting construction of thermostat simplify, and improves installation property and reduces cost.
Past, radiator is being installed in the water-cooled engine on internal-combustion engine top, when in the circulation canal at cooling water thermostat being set, sometimes the configuration radiator cools off with fan between internal-combustion engine and radiator, by the end clamping thermostat that the coolant outlet portion opening and the thermostat outer cover of internal-combustion engine are used conduit, the opposing party's of this conduit end is connected to the cooling water inlet (opening flat 5-78642 number) of radiator by flexible pipe with reference to the Japanese patent gazette spy.
Yet, in the mounting construction of the such thermostat of prior art, need to keep and cover the special-purpose outer cover conduit of thermostat, also need this outer cover is connected to the flexible pipe of radiator with conduit, so part count increases, become the key factor of cost rising.In addition, need carry out the thermostat outer cover with conduit in the installation of internal-combustion engine and insert operation such as flexible pipe, installation property hard to say is also good.
The object of the present invention is to provide a kind of thermostat mounting construction of water-cooled engine, this thermostat mounting construction can solve the problem as described above of the mounting construction existence of the thermostat that has water-cooled engine now, its mounting construction is simplified, improve installation property and reduce cost, and can improve the cooling responsiveness and the cooling stability of the cooling water of radiator.
The present invention relates to solve the mounting construction of thermostat of the water-cooled engine of above-mentioned such problem, in the thermostat mounting construction of the water-cooled engine of the present invention's first scheme, radiator is installed in the top of internal-combustion engine; It is characterized in that: above-mentioned thermostat is in the circulation canal of cooling water, and the water tank that faces toward above-mentioned radiator is provided with interiorly.
Because the present invention's first scheme constitutes as described above, thermostat is arranged in the circulation canal of cooling water, water tank facing to above-mentioned radiator is provided with interiorly, so, need not pass by the needed special-purpose outer cover that is used to keep to cover thermostat with conduit be used for this outer cover is connected in conduit the flexible pipe of radiator, can reduce components number, reduce cost.In addition, owing to need not pass by the operations such as installation, insertion of required parts, so can improve installation.
In addition, owing to do not need thermostat outer cover conduit and flexible pipe, so, also can connect the cooling water gateway of internal-combustion engine and the cooling water gateway of radiator without connecting pipings, internal-combustion engine and heat sink arrangements are in very approaching position, thermostat can detect rapidly by temperature of the chilled cooling water of radiator (thermostat is located at the occasion of the cooling water inlet portion of internal-combustion engine) or the influence that improved the temperature (thermostat is located at the occasion of the coolant outlet portion of internal-combustion engine) of the cooling water of temperature by internal-combustion engine, can suitably control the cooling water circulation, improve the cooling responsiveness of the cooling water of radiator.
In addition,,, suitably control the cooling water circulation, improve the cooling stability of the cooling water of radiator so can correctly detect the temperature of the cooling water that temperature behind the cooling internal combustion engines risen because thermostat diminishes by the influence of external air temperature.
In addition, alternative plan of the present invention, on the basis of above-mentioned first scheme, thermostat is installed between the cooling water gateway of the cooling water gateway of internal-combustion engine and radiator.
As a result,, thermostat can be fixed in the circulation canal of cooling water by very simple device, and, thermostat can be set in the water tank of radiator.
Accompanying drawing is simply described as follows:
Fig. 1 is the two-wheeled left surface figure of water-cooled engine that has carried the thermostat mounting construction of a form of implementation of using the present invention's first and second schemes.
Fig. 2 looks sectional view for II-II alignment of Fig. 1, for cutting off the schematic cross-sectional views of the power unit that comprises water-cooled engine with the face that comprises cylinder-bore axis with bent axle orthogonal ground.
Fig. 3 looks sectional view for III-III alignment of Fig. 2.
Fig. 4 looks sectional view for IV-IV alignment of Fig. 2, for the figure of radiator part is shown with side-looking.
Fig. 5 looks sectional view for V-V alignment of Fig. 2.
Fig. 6 is the major component enlarged view of Fig. 2.
Fig. 7 is the planimetric map of radiator.
Fig. 8 is the front elevation of guard shield.
Below, a form of implementation of explanatory drawing 1～the present invention's first scheme shown in Figure 8 and alternative plan.
Fig. 1 is the two-wheeled left surface figure that has carried the water-cooled engine of the thermostat mounting construction that uses this form of implementation, Fig. 2 looks sectional view for II-II alignment of Fig. 1, for cutting off the schematic cross-sectional views of the power unit that comprises water-cooled engine with the face that comprises cylinder-bore axis with bent axle orthogonal ground, Fig. 3 looks sectional view for III-III alignment of Fig. 2, Fig. 4 looks sectional view for IV-IV alignment of Fig. 2, for the figure of radiator part is shown with side-looking, Fig. 5 looks sectional view for V-V alignment of Fig. 2, Fig. 6 is the major component enlarged view of Fig. 2, Fig. 7 is the planimetric map of radiator, and Fig. 8 is the front elevation of guard shield.
Below alleged " all around " refer to that vehicle body all around when vehicle forward direction is watched.In addition, " the vehicle body " center " means vertical by the left and right sides width direction central authorities that are installed on two-wheeled wheel." near the vehicle body center " means in the width direction width range that is installed on about two-wheeled wheel.
As shown in Figure 1, two-wheeled 1 has adopted the mounting construction of the radiator of this form of implementation at power unit 7, and this is two-wheeled to have main frame, framework 3 and back framework 4 before this main frame is interconnected by bolt 2 and constitute.
Front hitch that hangs front-wheel 5 and the steering equipment that handles front-wheel 5 are set in the front portion of preceding framework 3, be provided for driving the power unit 7 of trailing wheel at the back side in the place ahead of back framework 4, be provided for hanging the rear hitch of trailing wheel 6 at the rear portion of back framework 4, vehicle seat 8 be set on the top, the place ahead of back framework 4.
Two-wheeled 1 front mudguard 9, front shroud 10, pedal 11, vehicle frame body cover 12 and rear mudguard 13 are installed successively from the place ahead to the rear, an offside cover 14 is set about pedal 11.The inside of the vehicle frame body cover 12 below vehicle seat 8, be provided with accommodate the helmet etc. accommodate case 15.
Front hitch has rocking arm 16 and damping device 17, this rocking arm 16 is positioned at the right side of front-wheel 5, the fulcrum of the underpart, the place ahead of framework 3 before can freely along the vertical direction joltily being bearing in, an end of this damping device 17 is to be pivotally mounted in rocking arm 16, and the other end is with framework 3 before being pivotally mounted in.Front ends at rocking arm 16 can joltily be installed axletree carriage 19 to left and right direction by knuckle pin 18, but the axletree 20 free rotaring ground supporting front-wheels 5 that are being installed on axletree carriage 19.
Steering equipment has the handle of turning to column 22, steering arm 23, reaches connecting rod 24, but this turns to handle column 22 free rotaring ground supportings in head pipe 21, the upper end portion, the place ahead of framework 3 before this pipe 21 is installed on, this steering arm 23 can freely along the vertical direction joltily be bearing in the underpart that turns to handle column 22, in steering arm 23, the other end is with the arm 19a of pivotal mounting in axletree carriage 19 with pivotal mounting in one end of this connecting rod 24.
Like this, steering equipment and front hitch become separate mechanism, have improved maneuverability.
Though be not shown specifically in the drawings, the front portion of power unit 7 can freedom joltily be bearing in back framework 4 by a pair of hanger bolt, what this a pair of hanger bolt was inserted into carriage 25 respectively hangs hole 26 and pipe box tube 46 (with reference to Fig. 2, Fig. 3), this carriage 25 is installed in framework 4 after the pairing left and right respectively, and this pipe box tube 46 is separately positioned on the front ends of lower crankcase 421 of aftermentioned internal-combustion engine 30 and the front ends of cylinder head 43.
On the other hand, the rear portion of power unit 7 is installed in the rear portion of the back framework 4 of left by damping device 27.
Can fluctuate corresponding to the fluctuating on road surface when like this, power unit 7 is walked.
In addition, the axis of two pipe box tubes 46 is in the horizontal plane position slightly up of the axis C1 of the bent axle 31 that comprises internal-combustion engine 30.Two axial lines is positioned at the below of the top position of pedal 11, and in the upper-end surface of the power unit 7 except radiator 41 and the position of the height that equates substantially above the pedal 11, configuration power unit 7 makes the vehicle body centre of gravityization.
Internal-combustion engine 30 is spark ignition type 4 stroke single-cylinder water-cooled engines, and the pliability air leading-in conduit 33 that extends from the air-strainer 32 that is disposed at vehicle frame body cover 12 belows is connected to the end, upstream of closure 34, and this tb 34 is configured in the vehicle body right side.Downstream end at tb 34 connects the suction tude 35 that is connected with the inlet hole of cylinder head 43, in this suction tude 35 Fuelinjection nozzle 36 is installed.From the fuel tank 37 that is disposed at pedal 11 bottoms to these Fuelinjection nozzle 36 fuelings.
In addition, on the right side of vehicle body, configuration exhaust silencer 39, this exhaust silencer 39 is connected to outlet pipe 38, and this outlet pipe 38 is connected to the exhaust port of cylinder head 43.Radiator 41 is configured in the top of internal-combustion engine 30, and this radiator 41 aims at the cooling air of the cooling fan 58 that is disposed at internal-combustion engine 30 the place aheads.
Below, further describe power unit 7.
As shown in Figures 2 and 3, internal-combustion engine 30 by overlap to install successively crankcase 42, cylinder head 43, and cylinder cover cap 44 constitute.
Crankcase 42 is divided into lower crankcase 42u, 421 by parting plane A, and this parting plane A comprises the axis of bent axle 31 and horizontal plane inclination relatively, and the parting plane of lower crankcase 421 is upper left towards vehicle body.On the top of upper crankcase 42u, integrally formed cylinder 45, this cylinder 45 have the axis that relative vehicle body center tilts towards the upper right, towards the upper right attachment face B of the vehicle body of this cylinder 45, cylinder head 43 are installed.
The relative horizontal plane of this attachment face B and parting plane A tilt, and the plane that comprises parting plane A and the plane that comprises attachment face B intersect in the foreign side of two crankcase 42u up and down, 421 bottom right (being the lower-left in Fig. 2).
The part of two crankcase 42u, 421 double as speed changer casees 92 up and down, this speed changer case 92 covers the front portion of speed changers, and this speed changer be the constituting component that the transmission of power of bent axle 31 is arrived the transfer unit 90 of trailing wheel 6.
In outside, left end, the place ahead of lower crankcase 421, pipe box tube 46 is set, insert logical hanger bolt at this pipe box tube 46, this hanger bolt is bearing in power unit 7 on the carriage 25 of back framework 4.This pipe box tube 46 by cylindrical part 46a, spring tube 46b, and metallic insert siphunculus 46c and constitute, this cylindrical part 46a is integrally formed at lower crankcase 421, this spring tube 46b is fixed in the inner peripheral surface of cylindrical part 46a by outer circumferential face cylindric rubber etc. constitutes, and this metallic is inserted siphunculus 46c and is fixed in the inner peripheral surface of spring tube 46b and hanger bolt inserted logical inboard with outer circumferential face.Isomorphic pipe box tube 46 also is arranged on the outside, end, lower right, the place ahead of cylinder head 43.
At crankcase 42, but pass through the so-called vertically bent axle 31 of configuration of a pair of main bearing 49,50 free rotaring ground supportings towards the fore-and-aft direction of car body.Each main bearing 49,50 remains on respectively the semi-cylindrical groove that forms two crankcase 42u up and down, 421 parting plane A, and the axis C1 of bent axle 31 is positioned on the parting plane A.
Connecting rod 48 is installed small end at the wrist pin of the piston 47 in the cylinder hole that can be embedded in cylinder 45 with being free to slide, at the crankpin of bent axle 31 big end is installed, and by this connecting rod 48, drives bent axle 31 revolutions by pistons reciprocating 47.In addition, in the opposition side of wrist pin 47 counterweight 31a is set, suppresses the vibration of the to-and-fro motion generation of piston 47 and connecting rod 48 at bent axle 31.
Describe the axis relation of parting plane A, attachment face B and cylinder 45 below in detail.
Vertical with the axis C1 of bent axle 31 and comprise the datum plane of the axis C2 of cylinder 45, the intersection of parting plane A and datum plane is that benchmark plumb line angulation α is an acute angle with the vertical half line that axis C1 from bent axle 31 extends towards the top.In addition, the axis of cylinder 45 and said reference plumb line angulation β also acutangulate, and two angle [alpha], β equate substantially.
The elongation line of the intersection of attachment face B and datum plane and said reference plumb line angulation, the angle γ of corresponding angles that promptly becomes angle [alpha] is littler than angle [alpha].Therefore, at datum plane, the angle that forms between the axis of parting plane A, attachment face B and cylinder 45 and the car body center C O also becomes angle [alpha], angle beta, angle γ respectively.The value of these angle [alpha], β, γ can consider that the size at the tilt angle that should set etc. suitably sets.
Form the pressurized hole that the inlet hole that connects suction tude 35, the exhaust port that connects outlet pipe 38 and exhausting air conduit connect respectively in cylinder head 43, be connected to the firing chamber that is formed at below the cylinder head 43, this exhausting air conduit is connected with pressurized machine 52.
In the firing chamber, fueling and Air mixing gas, this fuel sprays towards intake valve from the Fuelinjection nozzle 36 that is installed on suction tude 35.The spark plug 51 that is used to light this mixed gas is installed on cylinder head 43 facing to the firing chamber.In addition, in the hole that is formed at cylinder head 43 ear end faces, the pressurized cylinder 52a of the housing of chimeric formation pressurized machine 52.
In cylinder head 43, but by the camshaft 53 of pair of bearings 54,55 free rotaring ground supportings towards the configuration of vehicle body fore-and-aft direction.Each bearing 54,55 remains on the semi-cylindrical groove of the attachment face B that is formed at upper crankcase 42u and cylinder head 43 respectively, and the axis C3 of camshaft 53 is positioned on the attachment face B.By the configuration of such camshaft 53, compare with the internal-combustion engine that only supports camshafts 53 by cylinder head 43, can reduce the axial height of cylinder 45.
As shown in Figure 3, the front ends in main bearing 49 the place aheads that are positioned at bent axle 31 front sides is provided with alternator 56, and the rotor 56a of this generator 56 is connected by the bolt thread portion of the place ahead end face of bent axle 31, and is fastening by nut 57.At the rotor 56a of generator 56, the cooling fan 58 that is used for carrying to radiator 41 tempering air is installed by bolt 59 one.Cover by guard shield (fan cover) 40 around the cooling fan 58.Form air in the place ahead of guard shield 40 and be taken into a mouthful 40a.
On the other hand, at the rear of the rear side main bearing 50 of bent axle 31, the 1st actuation gear the 60, the 2nd actuation gear 61 is installed pivotally towards the rear successively respectively with bent axle 31 one.In addition, form the embedding hole coaxial with the axis C1 of bent axle 31 at the rear of bent axle 31 end face, the oil pump live axle 62a of chimeric hollow in this embedding hole turns round integratedly with bent axle 31.
Oil pump 62 is Tuo Luoyikayi many (ト ロ イ コ イ De) formula, utilize two crankcase 42u up and down, 421 and the case inner space that forms, the mating face of speed changer case 92 in, drive rotor 62b revolution by oil pump live axle 62a.
The oil that is stored in lower crankcase 421 bottoms is attracted by the suction passage 63 of this oil pump 62 through being formed at speed changer case 92, the central shaft 93 that the oil of discharge is supplied with camshaft 53, speed changer respectively by the oil circuit and the oil pipe of crankcase 42 and speed changer case 92, and each bearing portion.In addition, the slide part of two main bearings 49,50 of bent axle 31 and the big end of crank pin and connecting rod 48 is by the oil inside offering of oil pump live axle 62a.
The 1st actuation gear 60 and gearwheel 65 engagements, this gearwheel 65 can be installed pivotally with pony axle 64 one.This pony axle 64 becomes the balace weight axle as described later, and the number of teeth of gearwheel 65 equates with the number of teeth of the 1st actuation gear 60, by the rotating speed revolution that equates with bent axle 31.
For drive cam shaft 53 revolution, small gear 66 one that the cam wheel 67 that is provided with pivotally with camshaft 53 one is meshed are located at gearwheel 65.Make camshaft 53 when bent axle 31 revolutions 2 enclose, change 1 circle by these gear row.Front ends at camshaft 53 installs back flap, detects the rotary position of this finger plate by rotary position sensor 76, thereby detects the required engine stroke state of control fuel injection timing.
In supercharging bent axle 52c, this supercharging bent axle 52c makes the charged piston 52b to-and-fro motion of the piston super charger 52 of double action type to cam wheel 67 with splined joint.Form hollow portion as oil circuit at camshaft 53, this oil circuit is used for the slide part fuel feeding to each cam of aftermentioned and each rocking arm, is pressed into the extending portion of supercharging bent axle 52c in the end of the pressurized machine side of this hollow portion.Thus, make camshaft 53 and the revolution of supercharging bent axle 52c one.
At camshaft 53, be provided for respectively intake valve 68, exhaust valve (not shown) and pressure charging valve 69 are opened intake cam that valve drives, exhaust cam, and supercharging cam.Wherein, intake valve 68 is driven by the 2nd rocking arm 71 and drives valve, and the 2nd rocking arm 71 is shaken by bar 72, and this bar 72 is left behind by the 1st rocking arm 70, and the 1st rocking arm 70 contacts with intake cam.Though exhaust valve does not illustrate in the drawings, also drive valve by driving by the different moment with its identical mechanism.On the other hand, pressure charging valve 69 is driven by the 2nd rocking arm 74 and drives valve, and the 2nd rocking arm 74 is shaken by bar 75, and this bar 75 is pushed to by the 1st rocking arm 73, and the 1st rocking arm 73 contacts with the supercharging cam.
Pony axle 64 is towards vehicle body fore-and-aft direction configuration, forms with the level cylindricly, has 64a of large cylinder portion and little cylindrical part 64b.But 64a of large cylinder portion and little cylindrical part 64b are respectively by bearing 77,78 free rotaring ground supportings, and this bearing 77,78 is by two crankcase 42u, 421 maintenances up and down.
The main bearing 49,50 of these each bearings 77,78 and bent axle 31 similarly remains in the semi-cylindrical groove, and this semi-cylindrical groove is formed at two crankcase 42u up and down, 421 parting plane respectively, and the axis of pony axle 64 is positioned on the parting plane A.In addition, because the relative vehicle body center C of parting plane A O tilts with angle [alpha], the axis C4 of pony axle 64 is below the axis C1 of bent axle 31, and vehicle body center C O is arranged in right side (being the left side at Fig. 2) relatively.
In the inboard of the 64a of large cylinder portion of pony axle 64, separate shell (partition wall of the magnetic-type cooling waterpump 79) 79a that accommodates cooling waterpump 49 with gap with the inner peripheral surface of the 64a of this large cylinder portion.At this shell 79a liquid the shell 79b of cooling waterpump 79 is installed thickly, connects the pipe arrangement (aqueduct) 80 that comes out from the water tank of the outlet side of radiator 41 at this shell 79b.
In addition, though be not shown specifically in the drawings, form tap hole 81 (with reference to Fig. 2, Fig. 5) at upper crankcase 42u, this tap hole 81 links to each other with the discharge portion of cooling waterpump 79, and is communicated with the cooling jacket 84 that surrounds cylinder-bore formation.In Fig. 5, the outside of a part of surrounding alternator 56 leg 128 on every side is shown.This leg 128 protrudes the place ahead outer side surface that is formed on upper crankcase 42u.
In the pump chamber that forms by shell 79a and shell 79b, turning axle 79c is set, this turning axle 79c extends in the pump chamber vertically, but an end is distinguished free rotaring ground supporting in the top of shell 79b, but the other end difference free rotaring ground supporting is in the bottom of shell 79a.Cooling waterpump 79 has impeller 79d, and this impeller 79d has 3 blades and installs with turning axle 79c one, at the circumferential mounting permanent magnet 79e of the axial region of this impeller 79d.
Above-mentioned gap location at the cylindrical part 64a of pony axle 64 inner peripheral surface and shell 79a, in the inner peripheral surface of cylindrical part 64a with and shell 79a between the circumferential mounting permanent magnet 79f in state lower edge of micro-gap is set, and the permanent magnet 79e of the axial region of impeller 79d between form magnet coupling.
Therefore, when pony axle 64 revolutions, impeller 79d is by this magnet coupling revolution, and the cooling water that flow into pump chamber through aqueduct 80 is boosted by cooling waterpump 79, is sent to cooling jacket 84 through the discharge portion of cooling waterpump 79, the tap hole 81 of upper crankcase 42u.
As shown in Figure 2, radiator 41 is erected at the V word space that is formed by upper crankcase 42u and cylinder head 43 and is configured, and its two ends, left and right sides are individually fixed in the top left end of upper crankcase 42u and the top right-hand end of cylinder head 43 by stay (mounting plate) 120 by bolt 121.
Cooling water after the high-temperature portion of cooling cylinder 45 and cylinder head 43 flow into the inlet side water tank 122 (with reference to Fig. 7) of radiator 41 as shown in Figure 2 through thermostat 82 from the coolant outlet of cylinder head 43.
As Fig. 2 and shown in Figure 6, the coolant outlet of cylinder head 43 forms and protrudes tubular, the locular wall that its protrusion tube 43a of portion connects the containing room 41a of inlet side water tank 122 sidepieces that are integrally formed at radiator 41 is embedded in this containing room 41a, and the coolant outlet of realization cylinder head 43 is communicated with the fluid of 122 in the inlet side water tank of radiator 41.Thermostat 82 is configured in that a part of cooling water circulation canal that connects containing room 41a locular wall, accommodates this protrusion tube 43a of portion at this containing room 41a.
Containing room 41a is integrally formed at the sidepiece of the inlet side water tank 122 of radiator 41 as described above, constitutes the part of inlet side water tank 122.Conjointly be provided with the cardinal principle latter half part of the right-hand end of core of radiator 41.
Further describe the mounting construction of thermostat 82 here, with reference to Fig. 2, Fig. 6 and Fig. 7.
Protruding the part that the tube 43a of portion connects the locular wall of containing room 41a, in the recessed recessed tube portion 130 that accepts to protrude the tube 43a of portion that forms of the locular wall (diapire) of containing room 41a, the front half part setting-in that protrudes the tube 43a of portion arrives the tube portion 130 that is recessed into of being somebody's turn to do.The interior square end portion undergauge of recessed tube portion 130 is at this place's formation circular step 130a of portion.Recessed tube portion 130 constitutes the cooling water inlet of radiator 41.
The annular flange portion 82a that protrusion is formed at the tube portion outer circumferential face of thermostat 82 is arranged between the inner face of end face that protrudes the tube 43a of portion and the stepped part 130a that is recessed into tube portion 130 by seal arrangement, like this, thermostat 82 is installed between the cooling water inlet of the coolant outlet of the cylinder head 43 suitable with the coolant outlet of internal-combustion engine 30 and radiator 41.The valve body 82b of thermostat 82 very in depth enters in the containing room 41a, and thermostat 82 is installed in containing room 41a very darkly.The paraffin portion 131 of thermostat 82 is disposed at the coolant outlet side of cylinder head 43.
Like this, utilize the V word space that forms by upper crankcase 42u and cylinder head 43, dispose radiator 41 here, so, can realize the save spaceization of radiator mounting construction, the compactness of realization power unit 7.In addition, can increase the article receiving space of vehicle seat 8 belows thus.
Coolant outlet that does not need to connect cylinder head 43 by pipe arrangements such as flexible pipes and 122 in the inlet side water tank of radiator 41 in addition, do not need special-purpose thermostat, do not need the processing of pipe arrangement, can increase the degrees of freedom that circumferential component disposes.In addition, the connection of cooling water passage continues and also becomes easily, and the cooling water passage that can make 41 in cylinder head 43 and radiator under the state of getting involved thermostat 82 is the shortizationest, further stablizes cooling performance.
Below, further describe the structure of radiator 41.
As Fig. 2, Fig. 4 and shown in Figure 7, radiator 41 has the inlet side water tank 122 and the outlet side water tank 123 of cooling water, and these two water tanks 122,123 are connected by a plurality of finned heat-transfer pipes 124.
All contour shapes of radiator 41 are elongated shape (with reference to Fig. 2), the central part of length direction is big a little up in its front view, protrude smallerly slightly towards the below, radiator 41 is configured in the same manner and fixes with its direction of elongate (length direction) and the direction that is set up between the V font that is formed by upper crankcase 42u and cylinder head 43.
All contour shapes of radiator 41 are rectangular substantially under plane view, only a square end of inlet side water tank 122 partly is the shape of protruding towards length direction (with reference to Fig. 7), and this inlet side water tank 122 is accepted from the cooling water of the embedded containing room 41a outflow of the protrusion tube 43a of portion of cylinder head 43.The size of radiator 41, shape are according to required cooling capacity, the layout etc. of parts suitably determines on every side.
Cooling water flow in a plurality of finned heat-transfer pipes 124 from inlet side water tank 122, here, and by the cooling air cooling that blows out from cooling fan 58.In band fin heat transfer pipe 124, next the cooling water that is cooled off flow in the outlet side water tank 123, imports to the suction portion of cooling waterpump 79 by pipe arrangement (aqueduct) 80 from the coolant outlet 125 of being located at these water tank 123 1 square end portions.
After cooling air is discharged from cooling fan 58, guiding by elongated air dam 40b (with reference to Fig. 4, Fig. 8) and U word shape air guiding wall 126 (with reference to Fig. 2, Fig. 4) and to flow through in the air-guiding aisle D, the bottom of the V word space that forms from upper crankcase 42u and cylinder head 43 flow into the core of radiator 41, this elongated air dam 40b radially protrudes to extend vertically by a part that makes guard shield 40 perisporiums and forms, and this U word shape air guiding wall 126 protrudes top (not being shown specifically among the figure) that is formed at upper crankcase 42u.
The cooling air that flow into the core of radiator 41 flows at in-core while being diffused into top and left and right sides side, flows out from core.With a plurality of band fin heat transfer pipe 124 even contact, carry out indirect heat exchange effectively around here, with the cooling water that flows through inside.
On the top of the inlet side water tank 122 of radiator 41, be provided with the supply portion 127 of cooling water.Though this cooling water supply portion 127 does not at length illustrate in the drawings, in fact one has safeguarding mechanism.
Outer circumferential face at the 64a of large cylinder portion of pony axle 64, counterweight 83 cylindraceous is installed, form balanced controls, the vibration that these balanced controls are used to suppress to have vibration that the revolution of the bent axle 31 of counterweight 31a produces and are produced by the to-and-fro motion of piston 47 and connecting rod 48.
Therefore, pony axle 64 also becomes the balace weight axle simultaneously for driving the live axle of cooling waterpump 79.Like this, the pony axle 64 of being located at the driving mechanism of drive cam shaft 53 works as the live axle of cooling waterpump 79 with as the balace weight axle, thereby can make internal-combustion engine 30 compactnesss, and also can dispose a plurality of turning axlees compactly in narrow space.
The axis of camshaft 53 and pony axle 64 relative cylinders 45 is disposed at a plane that comprises parting plane A and a side that comprises the crossing on the same level of attachment face B, i.e. the mutual approaching side in two planes.By the such configuration of camshaft 53 and pony axle 64, can make the pony axle 64 that is supported on parting plane A and be supported on the camshaft 53 closely configuration mutually of attachment face B, other pony axle of intervention can directly not engage both by small gear 66 and cam wheel 67 between pony axle 64 and camshaft 53.Like this, can reduce the height of the axial direction of cylinder 45, cut down components number.
By the such configuration of camshaft 53 and pony axle 64, the result can effectively utilize the small space of being clamped by the two sides of the mutual approaching side in the plane of plane that comprises parting plane A and attachment face B, so, can form wide space leaving cylinder cylinder 45 and its opposition side 45 sides, can be as described above at one the radiator 41 of this spatial configuration as circumferential component.
As the planetary transmission 91 of the constituting component of the power transmitting deice 90 of power unit 7, have central shaft 93, input gear 94, forward clutch 95,2 speed with, 3 speed with and 4 speed with each speed change clutch 96～98 and output shaft 99.
Be installed on the spline member 100 of the axle head of this final reduction gear case 114 by covering, can not support pivotally.The axis C5 of central shaft 93 is positioned on two crankcase 42u up and down, 421 the parting plane A.
The front ends of central shaft 93, as described above, by two crankcase 42u, the supporting of 421 front ends, be in the position of more leaning on vehicle front than the rear end of bent axle 31, so can dispose bent axle 31 and central shaft 93 overlappingly along fore-and-aft direction, shorten the fore-and-aft direction length of power unit 7, constitute compact power unit 7.
The 2nd actuation gear 61 of bent axle 31 and 94 engagements of input gear, this input gear 94 is installed in the axial central part flange of being located at flanged boss 101, and this flanged boss 101 can be entrenched in the central shaft 93 of speed changer 91 freely to rotate.The rear portion of flanged boss 101 one pivotally is engaged in the clutch inner ring 95a of forward clutch 95, in addition, anterior at it by the starting driven gear 105 of overrunning clutch 106 installations with small gear 104 engagements of the pony axle of the reducing gear that constitutes starter motor.Symbol 102 is and the direct-connected actuation gear of the turning axle of starter motor, and symbol 103 is the gearwheel with the pony axle of these actuation gear 102 engagements.
Forward clutch 95 has clutch inner ring 95a, clutch outer 95b, reaches centrifugal weight 95c, when clutch inner ring 95a surpasses the regulation rotating speed, start by centrifugal weight 95c, clutch inner ring 95a is engaged with clutch outer 95b, both one revolutions, thus make forward clutch 95 become the state that engages fully.
Each speed change clutch 96～98 has planetary gears and clutch mechanism.
At the output shaft 99 of planetary transmission 91, but one is installed output gear 107 pivotally, and this output gear 107 meshes with the gear 112 of the live axle 11 that is fixed in final speed reducer 110.Rear end at the live axle 111 that disposes towards the vehicle body fore-and-aft direction forms not shown bevel gear, and this bevel gear meshes with the driven wheel of differential of the axletree that is installed on trailing wheel 6.Like this, be delivered to trailing wheel 6 behind the rotary decelerating of output shaft 111, drive trailing wheel 6.Symbol 113 is a speed probe.
The radiator 41 of this form of implementation constitutes as described above at the mounting construction of power unit 7, so can produce following such effect.
When radiator 41 being installed on the top of power unit 7, the bent axle 31 of power unit 7 disposes by vertical along the vehicle body fore-and-aft direction, the axis of the cylinder 45 of power unit 7 is along the configuration obliquely up of vehicle body right direction, the Power Train of power unit 7 is along the configuration obliquely up of vehicle body left direction, and radiator 41 sets up between the V font that is configured in by these two power unit 7 tops that are formed slopely.
As a result, can effectively utilize between the top V font that easily becomes dead space, radiator 41 is erected at be configured installation here, can realize the save spaceization of the mounting construction of radiator 41 by the above-mentioned two power units 7 that are formed slopely.Like this, can enlarge the article receiving space of radiator 41 tops, vehicle seat 8 belows.
On power unit 7 tops, radiator 41 can be installed in the top of power unit 7 of the axis top of cylinder 45, this cylinder 45 when the vehicle body fore-and-aft direction is watched along the configuration obliquely up of vehicle body right direction, so, can radiator 41 be installed in the place ahead of power unit 7 part, this position is close with the pivot branch that can free joltily be supported power unit 7 by Hanging bolt, so, when power unit 7 shakes, shaking of radiator 41 diminishes, the displacement of the upper section of radiator 41 (gap that cooling water supply portion 127 has etc.) diminishes, and shakes displacement for this, does not need so firmly radiator 41 to be fixed on power unit 7.As a result, the installation strength of radiator 41 descends, and radiator 41 is simplified at the mounting construction on power unit 7 tops.
In addition, at an end of bent axle 31 cooling fan 58 is installed, this cooling fan 58 is covered by guard shield 40, and the cooling air of discharging from this cooling fan 58 is directed to radiator 41, so, can cooling fan 58 be installed near guard shield ground, can improve the cooling performance of radiator 41.In addition, also can make guard shield 40 miniaturizations.
In this form of implementation, radiator 41 is set up in the top V word space of power unit 7, but in the occasion that has, and can not obtain such V word space by the structure of water-cooled engine 30 or power unit 7.In such occasion, make the bottom of radiator 41 be recessed into concavity with appropriate amount, form the space portion corresponding with the V word space, can will be somebody's turn to do the air-guiding aisle of place, or can cooling fan be set at this place as cooling air.
The mounting construction of the thermostat 82 of this form of implementation is owing to constituting as described above, so can obtain following effect.
In the circulation canal of cooling water, thermostat 82 is provided with facing to the containing room 41a of inlet side water tank 122 parts that constitute radiator 41 interiorly, so, need not pass by the needed special-purpose outer cover that is used to keep to cover thermostat 82 with conduit with will be used for this outer cover is connected in radiator 41 with conduit flexible pipe, can reduce components number, reduce cost.In addition, owing to need not pass by the operations such as installation, insertion of required parts, so can improve the installation of radiator 41 and thermostat 82.
In addition, owing to do not need thermostat outer cover conduit and flexible pipe, so the coolant outlet of internal-combustion engine 30 can be communicated with without connecting pipings with the cooling water inlet of radiator 41, internal-combustion engine 30 is configured in very near position with radiator 41, thermostat 82 detects the temperature effect that has been improved the cooling water of temperature by internal-combustion engine rapidly, suitably control the cooling water circulation, can improve the water quench responsiveness of radiator 41.
In addition,,, suitably control cooling water and circulate, can improve the stability of the water quench of radiator 41 so can correctly detect the temperature that cooling internal combustion engines makes the cooling water that temperature risen because thermostat 82 diminishes by outer gas Temperature Influence.
In this form of implementation, the 43a portion of protrusion tube portion of cylinder head 43 is the coolant outlet of internal-combustion engine 30, the containing room 41a that is integrally formed at inlet side water tank 122 sidepieces of radiator 41 is the cooling water inlet of radiator 41, but be not limited thereto, also can make the cooling water loop direction conversely, with this containing room 41a is the coolant outlet of radiator 41, the 43a of portion is the cooling water inlet of internal-combustion engine 30 with this protrusion tube, even like this, thermostat 82 also can promptly detect the temperature effect by radiator 41 chilled cooling waters, suitably control the cooling water circulation, can improve the cooling responsiveness of the cooling water of radiator 41.In addition, thermostat 82 is diminished by outer gas Temperature Influence, so can improve the water quench stability of radiator 41.In this occasion, preferably conversely, the paraffin portion 131 of thermostat 82 is configured in containing room 41a side with the direction of thermostat 82.
The joint of the no flexible pipe of the cooling water inlet of the coolant outlet of internal-combustion engine 30 and radiator 41 can move on to cylinder 45 sides and be provided with.In this occasion, form the protrusion tube portion (suitable) that is communicated with cooling jacket 84 at cylinder 45 with the protrusion tube 43a of portion of cylinder head 43, the size of radiator 41 is suitably dwindled etc., this protrusion tube portion is inlaid in the recessed tube portion 130 of the containing room 41a of radiator 41.Configuration thermostat 82 in the setting-in portion of this protrusion tube portion and recessed tube portion 130.In addition, be the cooling water inlet with the protrusion tube 43a of portion of cylinder head 43, it is communicated to the discharge portion of cooling waterpump 79.Like this, also can obtain effect same as described above.In the pipe arrangement of 79 in such internal-combustion engine 30, radiator 41, cooling waterpump connects and composes, the loop direction of cooling water is used conversely.
In this form of implementation, water-cooled engine 30 is integrated with power transmitting deice 90, constitute the part of power unit 7, but be not limited thereto, even power transmitting deice 90 and do not have the Componentized water-cooled engine, get final product so long as single cylinder or the multi-cylinder water-cooled engine that radiator disposes like that is installed at an upper portion thereof,, also can suitably implement the mounting construction of the thermostat 82 of this form of implementation even for such water-cooled engine.
Claims (2)
1. the mounting construction of the thermostat of a water-cooled engine, radiator is installed in the top of internal-combustion engine; It is characterized in that: above-mentioned thermostat is in the circulation canal of cooling water, and the water tank that faces toward above-mentioned radiator is provided with interiorly.
2. the mounting construction of the thermostat of water-cooled engine as claimed in claim 1 is characterized in that: above-mentioned thermostat is installed between the cooling water gateway of the cooling water gateway of above-mentioned internal-combustion engine and above-mentioned radiator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP207168/1999 | 1999-07-22 | ||
| JP11207168A JP2001032715A (en) | 1999-07-22 | 1999-07-22 | Installation structure of thermostat in water-cooled internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1281937A true CN1281937A (en) | 2001-01-31 |
| CN1131932C CN1131932C (en) | 2003-12-24 |
Family
ID=16535367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00120285A Expired - Fee Related CN1131932C (en) | 1999-07-22 | 2000-07-19 | Mounting structure of thermostatic device of water-cooled internal-combustion engine |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP2001032715A (en) |
| CN (1) | CN1131932C (en) |
| FR (1) | FR2796669B1 (en) |
| ID (1) | ID26597A (en) |
| IT (1) | IT1320434B1 (en) |
| TW (1) | TW446794B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10010078C2 (en) * | 2000-03-02 | 2003-06-18 | Bayerische Motoren Werke Ag | Cooling device for a liquid operating medium of an internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2500472A (en) * | 1948-10-20 | 1950-03-14 | Lawrence J Sohler | Control for coolants in liquid cooled motors |
| FR2602548B1 (en) * | 1986-08-07 | 1990-07-27 | Valeo | THERMOSTATIC VALVE DEVICE FOR COOLING CIRCUIT OF INTERNAL COMBUSTION ENGINE, AND RADIATOR PROVIDED WITH SUCH A DEVICE |
| FR2673241A1 (en) * | 1991-02-26 | 1992-08-28 | Valeo Thermique Moteur Sa | MOTOR VEHICLE RADIATOR PROVIDED WITH A FLUID CIRCULATION CONTROL DEVICE. |
| JPH0578642A (en) | 1991-09-25 | 1993-03-30 | Hitachi Chem Co Ltd | Adhesive composition |
| FR2739432B1 (en) * | 1995-09-29 | 1997-10-31 | Renault | THERMOSTATIC VALVE FOR INTERNAL COMBUSTION ENGINE |
-
1999
- 1999-07-22 JP JP11207168A patent/JP2001032715A/en active Pending
-
2000
- 2000-06-14 IT IT2000TO000572A patent/IT1320434B1/en active
- 2000-07-18 TW TW089114331A patent/TW446794B/en not_active IP Right Cessation
- 2000-07-19 CN CN00120285A patent/CN1131932C/en not_active Expired - Fee Related
- 2000-07-21 FR FR0009605A patent/FR2796669B1/en not_active Expired - Fee Related
- 2000-07-21 ID IDP20000616D patent/ID26597A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TW446794B (en) | 2001-07-21 |
| ITTO20000572A0 (en) | 2000-06-14 |
| FR2796669B1 (en) | 2003-10-10 |
| FR2796669A1 (en) | 2001-01-26 |
| IT1320434B1 (en) | 2003-11-26 |
| CN1131932C (en) | 2003-12-24 |
| ID26597A (en) | 2001-01-25 |
| JP2001032715A (en) | 2001-02-06 |
| ITTO20000572A1 (en) | 2001-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1102193C (en) | Air breather of engine | |
| CN1090281C (en) | Cooler of engine | |
| CN1172081C (en) | Cooling water circulating structure of I.C. engine | |
| CN101080566A (en) | Internal-combustion engine for vehicle | |
| CN1254791A (en) | Secondary air feeder for exhaustion of engine | |
| JP2011052547A (en) | Structure for preventing noise of centrifugal cooling fan | |
| CN1111643C (en) | IC engine for automatic bike | |
| CN1098420C (en) | Fuel sprayer for engine of vehicles | |
| CN1497142A (en) | Outboard motor equiped with water-cooled engine | |
| CN1467368A (en) | Forced air-cooled type engine for motorcycle | |
| CN101509546A (en) | Cooling structure for belt type stepless change | |
| CN1145742C (en) | Cooling structure of internal combustion engine | |
| CN1131932C (en) | Mounting structure of thermostatic device of water-cooled internal-combustion engine | |
| CN1070991C (en) | Lubricating oil feeding device for four-stroke internal combustion engine | |
| CN1085293C (en) | Water-cooled four cycle engine | |
| CN1253341C (en) | Supporting structure of flexible long-size component | |
| CN1103860C (en) | Cooler of engine | |
| CN1131931C (en) | Radiator mounting structure arranged on direction power parts of motor bicycle | |
| CN1497141A (en) | Water-cooled engine, outboard motor equiped with water-cooled engine, and outboard motor | |
| CN1088501C (en) | Cooling device of V-shape internal combustion engine list | |
| CN1493782A (en) | Four-stroke direct jet engine | |
| CN1129704C (en) | Air door valve rock arm installation of top-set valve type engine | |
| CN1497140A (en) | Water cooled vertical emgine and outboard motor equiped with the water-cooled vertical engine | |
| CN1497143A (en) | Outboard motor | |
| CN1470409A (en) | Two-wheel motorcycle power unit support structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |