CN103032126A - Variable valve transmission device of internal combustion engine - Google Patents
Variable valve transmission device of internal combustion engine Download PDFInfo
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- CN103032126A CN103032126A CN2012103594303A CN201210359430A CN103032126A CN 103032126 A CN103032126 A CN 103032126A CN 2012103594303 A CN2012103594303 A CN 2012103594303A CN 201210359430 A CN201210359430 A CN 201210359430A CN 103032126 A CN103032126 A CN 103032126A
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- cylinder head
- assembly department
- combustion engine
- actuator
- sidewall
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Abstract
The invention provides a variable valve transmission device of an internal combustion engine, which can inhibit heat conduction from a cylinder cover to an actuator even though the actuator is mounted on the cylinder cover, and can ensure the layout freedom degree, and thus prevent maximization of the internal combustion engine. An actuator (45) which enables the attachment/detachment of adjacent rocker arms (31, 32) by advance and retreat of a connecting pin (42) is mounted through more than one actuator mounting parts (55f, 55b, 55d) disposed on an external surface of a side wall (51R) of a cylinder cover (4), and lubricant passage ways (P1, P2, P3) are formed near the actuator mounting parts (55f, 55b, 55d) in the side wall (51R) of the cylinder cover (4).
Description
Technical field
The present invention relates to the variable stigmatic opening transmission device of the internal-combustion engine that moves by actuator.
Background technique
The variable stigmatic opening transmission device that makes the first Aspirating valves and the second Aspirating valves interlock or remove the internal-combustion engine of interlock by being installed in solenoidal action on the cylinder head is disclosed in patent documentation 1.
[formerly technical paper]
[patent documentation]
[patent documentation 1] TOHKEMY 2010-156237 communique
In patent documentation 1, be fixed with the driven sprocket by the cam chain transferring power in the end that axle is supported on the camshaft on the cylinder head, and with the sidewall of the opposed cylinder head of this driven sprocket and valve mechanism cover on be fixed with solenoid from the outside.
Solenoid becomes between the junction plane that coaxial position is installed in cylinder head and valve mechanism cover at its output shaft and camshaft.
Although the solenoid bolton is on the sidewall of cylinder head and valve mechanism cover, this sidewall just forms the outer side wall in the transmission of power space of cam chain, and near bolt assembly department do not have any special cooling structure.
Thereby, when the solenoid bolton is installed in the bolt assembly department of the described sidewall of cylinder head and valve mechanism cover, the heat of cylinder head is not subjected to suppress ground and does not conduct to solenoid, and solenoid self also causes heating because of work, thereby causes solenoid overheated.
Therefore, if the cooling mechanisies such as radiating fin are set at solenoid or make solenoid leave cylinder head with stow away from heat, then the degrees of freedom of layout is restricted, and internal-combustion engine can maximize.
Summary of the invention
The present invention proposes in view of the above problems, its purpose is to provide a kind of variable stigmatic opening transmission device of internal-combustion engine, even it is installed in actuator on the cylinder head, also can suppresses the heat conduction from cylinder head to actuator, and can guarantee the degrees of freedom of layout and prevent the maximization of internal-combustion engine.
To achieve these goals, a first aspect of the present invention provides a kind of variable stigmatic opening transmission device of internal-combustion engine, it is equipped on vehicle, driving by actuator 45 is advanced and retreat connection pin 42 between two rocking arms 31,32 that swing adjacent one another are, these two rocking arms 31,32 pairs of internal combustion engine valves 21,22 that are arranged on the cylinder head 4 carry out driven for opening and closing
By advancing of described connection pin 42, described adjacent rocking arm 31,32 mutually links and swings integratedly, and by the retreating of described connection pin 42, and described adjacent rocking arm 31,32 is disengaged and links and separate, the variable stigmatic opening transmission device of described internal-combustion engine is characterised in that
The more than one actuator assembly department 55f that described actuator 45 arranges via the outer surface at the sidewall 51R of cylinder head 4,55b, 55d and install,
Be formed with lubricating oil path P1, P2, P3 near described actuator assembly department 55f in the described sidewall 51R of cylinder head 4,55b, the 55d.
A second aspect of the present invention is characterized in that take the variable stigmatic opening transmission device of the internal-combustion engine of first aspect as the basis,
Near bending or crooked and form described lubricating oil path P1, P2, P3 at least one the actuator assembly department 55d in a plurality of described actuator assembly department 55f, 55b, 55d.
A third aspect of the present invention is characterized in that take the variable stigmatic opening transmission device of the internal-combustion engine of second aspect as the basis,
Also be formed with described lubricating oil path P1, P3 near other actuator assembly department 55f, the 55b beyond described at least one actuator assembly department 55d.
A fourth aspect of the present invention take first to the third aspect the variable stigmatic opening transmission device of the internal-combustion engine of either side it is characterized in that as the basis,
The described sidewall 51R of described cylinder head 4 be formed with described actuator assembly department 55f, 55b, 55d below separate and the spark plug assembly department 59 of spark plug 81 be installed,
Between described actuator assembly department 55f, 55b, 55d and described spark plug assembly department 59, be formed with described lubricating oil path P2.
A fifth aspect of the present invention is characterized in that take the variable stigmatic opening transmission device of the internal-combustion engine of fourth aspect as the basis,
Described cylinder head 4 is in the state that roughly erects,
On cylinder head 4, branch's cooling air passway 75 that the upper surface of 13 roof 67 is formed with rear cooling airflow outlet 72 front and back cooling air passways 70 that pass through from from the place ahead cooling airflow entrance 71 of front panel 51FL to rear sidewall 51B, passes through from the branch midway of described front and back cooling air passway 70 and to side cooling airflow outlet 76a, the 76b on the top that approaches with described spark plug assembly department 59 that forms the sidewall 51R that states to some extent spark plug assembly department 59 along the firing chamber
Between the side of described actuator assembly department 55f, 55b, 55d and described branch cooling air passway 75 cooling airflow outlet 76a, 76, be formed with described lubricating oil path P2.
The variable stigmatic opening transmission device of the internal-combustion engine of either side is characterized in that as the basis in a sixth aspect of the present invention the take first to the 5th aspect,
Described actuator assembly department 55f, 55b, 55d are outstanding from the outer surface of the described sidewall 51R of described cylinder head 4 and the actuator installation base 55f of section, 55b, 55d that form,
Between the described sidewall 51R of described actuator 45 that the described actuator installation base 55f of section, 55b, 55d install and cylinder head 4, be formed with air layer 49,
The part of described lubricating oil path P1, P2, P3 forms along described air layer 49.
[invention effect]
The variable stigmatic opening transmission device of the internal-combustion engine that relates to according to first aspect present invention, the actuator 45 that connection pin 42 is advanced and retreat is installed in the actuator assembly department 55f of the sidewall 51R of cylinder head 4,55b, on the 55d, this connection pin 42 is with adjacent and two rocking arms 31 that swing, 32 link, and at this actuator assembly department 55f, 55b, be formed with lubricating oil path P1 near the 55d, P2, P3, therefore utilize at lubricating oil path P1, P2, the lubricant oil that flows among the P3, the actuator assembly department 55f of actuator 45 will be installed by heat exchange, 55b, 55d and near cooling thereof, thus the heat of cylinder head 4 can be suppressed to the conduction of actuator 45.
In addition, the caused heating of work of actuator 45 self is also cooled off by lubricant oil.
The external cooling mechanisies such as cold sink or wind guide and heat dispersion sheet need to be set at actuator 45, and not need to make actuator 45 away from cylinder head 4, thereby can guarantee the degrees of freedom of layout, prevent the maximization of internal-combustion engine 1.
The variable stigmatic opening transmission device of the internal-combustion engine that relates to according to a second aspect of the invention, owing to described lubricating oil path P1, P2, P3 in a plurality of actuator assembly department 55f, 55b, 55d at least one actuator assembly department 55d near bending or crooked formation, therefore can effectively carry out this actuator assembly department 55d and near cooling thereof, thus the situation that the heating temperature that the heat that can further suppress cylinder head 4 self causes because of work to actuator 45 conduction and actuator 45 rises.
The variable stigmatic opening transmission device of the internal-combustion engine that relates to according to a third aspect of the invention we, owing to also be formed with lubricating oil path P1, P3 near other actuator assembly department 55f, the 55b beyond described at least one actuator assembly department 55d, therefore can be with a plurality of actuator assembly department 55f, 55b, 55d and near cooling thereof, thus the heat of cylinder head 4 can further be suppressed to the situation of actuator 45 conduction.
The variable stigmatic opening transmission device of the internal-combustion engine that relates to according to a forth aspect of the invention, because the described sidewall 51R in cylinder head 4 forms and described actuator assembly department 55f, 55b, separate and the spark plug assembly department 59 of installation spark plug 81 below of 55d, and at actuator assembly department 55f, 55b, be formed with lubricating oil path P2 between 55d and the spark plug assembly department 59, the conduction of the heat that the spark plug 81 of therefore installing at spark plug assembly department 59 produces is hindered by the lubricant oil that flows in lubricating oil path P2, thereby can prevent at actuator assembly department 55f, 55b, the actuator 45 of the upper installation of 55d overheated.
The variable stigmatic opening transmission device of the internal-combustion engine that relates to according to a fifth aspect of the invention, form actuator assembly department 55f at the left and right sides either party's who is in the cylinder head 4 that roughly erects state sidewall 51R, 55b, 55d and spark plug assembly department 59, and on this cylinder head 4, the upper surface of 13 roof 67 forms the rear cooling airflow outlet 72 front and back cooling air passways 70 that pass through from the place ahead cooling airflow entrance 71 of front panel 51FL to rear sidewall 51B along the firing chamber, from the branch midway of front and back cooling air passway 70 and to the side cooling airflow outlet 76a on the top that approaches with described spark plug assembly department 59 of the sidewall 51R that is formed with spark plug assembly department 59, branch's cooling air passway 75 that 76b passes through, at actuator assembly department 55f, 55b, the side cooling airflow outlet 76a of 55d and branch's cooling air passway 75, be formed with lubricating oil path P2 between the 76b, therefore by branch's cooling air passway 75 and from side cooling airflow outlet 76a, the cooling air that 76b flows through flows out spark plug 81 is cooled off towards being installed in spark plug 81 on the spark plug assembly department 59, and captured the heat of this spark plug 81 and the heat of the cooling air that heated up to being installed in actuator assembly department 55f, 55b, the convection current of the actuator 45 on the 55d is subject at actuator assembly department 55f, 55b, 55d and side cooling airflow outlet 76a, the lubricant oil that flows among the lubricating oil path P2 between the 76b hinders, thereby can prevent the overheated of actuator 45.
The variable stigmatic opening transmission device of the internal-combustion engine that relates to according to a sixth aspect of the invention, because actuator assembly department 55f, 55b, 55d is outstanding from the outer surface of the sidewall 51R of cylinder head 4 and the actuator installation base 55f of section that form, 55b, 55d, at the actuator installation base 55f of section, 55b, be formed with air layer 49 between the actuator 45 of the upper installation of 55d and the sidewall 51R of cylinder head 4, and lubricating oil path P1, P2, the part of P3 forms along this air layer 49, so lubricating oil path P1 by forming along air layer 49, P2, the lubricant oil that flows among the P3 will be towards the Cylinder Heat Wall cooling of air layer 49, and the effect of heat insulation by this chilled wall and air layer 49, the heat of cylinder head 4 can be suppressed significantly to the situation of o 45 transmission, thereby the overheated of o 45 can be prevented.
Description of drawings
Fig. 1 is the major component longitudinal section of the internal-combustion engine that relates to of present embodiment.
Fig. 2 cuts open and the sectional view that obtains along the II-II line of Fig. 1.
Fig. 3 is the stereogram that the cylinder head of various members is installed.
Fig. 4 is the plan view that the cylinder head of various members is installed.
Fig. 5 is the right side view that the cylinder head of various members is installed.
Fig. 6 is the right side view of cylinder head.
Fig. 7 is the plan view of cylinder head.
Fig. 8 cuts open and the sectional view that obtains along the VIII-VIII line of Fig. 6 and Fig. 7.
[symbol description]
1 ... internal-combustion engine
4 ... cylinder head
13 ... the firing chamber
20 ... valve actuating gear
21 ... the first Aspirating valves
22 ... the second Aspirating valves
23 ... outlet valve
31 ... the first air-breathing rocking arm
32 ... the second air-breathing rocking arm
40 ... variable stigmatic opening transmission device
41 ... link and remove piston
42 ... connection pin
43 ... drive link
45 ... o
46 ... housing
48 ... bolt
49 ... air layer
51 ... periphery wall
51R ... right side wall
55f, 55b, 55d ... solenoid installation base section
56 ... circular hole
63,64,65,66 ... fastening boss part
67 ... roof
68 ... substrate wall
70 ... the front and back cooling air passway
71 ... the place ahead cooling airflow entrance
72 ... rear cooling airflow outlet
73 ... divide buttress
74 ... the rectification rib
75 ... branch's cooling air passway
76a, 76b ... side cooling airflow outlet
81 ... spark plug
P1 ... vertical lubricating oil path
P2 ... horizontal lubricating oil path
P3 ... vertical lubricating oil path
Embodiment
Below, referring to figs. 1 through Fig. 8, a mode of execution that the present invention relates to is described.
The internal-combustion engine 1 that present embodiment relates to is to carry the air-cooling type 4 stroke cycle internal-combustion engines that wait the single cylinder on the dilly two-wheeled, cylinder block 3 and cylinder head 4 are overlapping and be fastened on integratedly on the not shown crankcase top of valve mechanism cover 5 coating gas cylinder caps 4 in turn from bottom to top.
With reference to Fig. 1 and Fig. 2, in cylinder block 3, be provided with piston 11 chimeric one-tenth moved back and forth freely cylinder liner 12, cylinder head 4 with and cylinder block 3 between form piston 11 end face towards the mode of firing chamber 13 be fastened on the cylinder block 3.
And, with reference to Fig. 1 and Fig. 4, on cylinder head 4, first, second intakeport 15,16 of two about rearward extending from firing chamber 13, first, second intakeport 15,16 is fit and extend as a upstream side intakeport 14 halfway, and 13 forwards extends a relief opening 17 from the firing chamber.
The upstream side of the intakeport 14 in the cylinder head 4 forms the air-breathing binding opening portion 14c that links with the suction means 18 that possesses Fuelinjection nozzle, and the exhaust connecting pipe 17c of section with outlet pipe 19 bindings in the downstream side of relief opening 17 forwards takes over side-prominent.
Branch's intakeport 15 in cylinder head 4, each upper wall portions of 16 are chimeric integratedly valve guide 21g, a 22g, is supported respectively as first Aspirating valves 21 that can slide and the second Aspirating valves 22 by each valve guide 21g, 22g first, second intakeport 15, each opening of 13 towards the firing chamber of 16 are opened and closed.
In addition, by the integratedly chimeric valve guide 23g supporting of the upper wall portions of the relief opening 17 in cylinder head 4 for 23 pairs of relief openings 17 of outlet valve that can slide towards the opening of firing chamber 13 open and close.
The first Aspirating valves 21 and the second Aspirating valves 22 and outlet valve 23 be by valve spring 21s, 22s, the 23s application of force upward, thus all will be towards the firing chamber each opening of 13 close.
Referring to figs. 1 through Fig. 4, valve actuating gear 20 is a camshaft 25 is bearing in the SOHC type internal-combustion engine on the cylinder head 4 via pair of bearings 26,27 axles along the left and right directions orientation valve actuating gears, above the oblique front and back of camshaft 25, be supported with pitman arm shaft 28,29, the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 each other the left and right sides adjacent and central by pitman arm shaft 28 axles at rear supportings for swinging freely, the central authorities of exhaust rocker arm 33 by the supporting of pitman arm shaft 29 axles in the place ahead for swinging freely.
In the first air-breathing rocking arm 31, the roller 31r that axle is supported on an end contacts with the air inlet cam lug boss 25i rolling of camshaft 25, is bolted in the tappet screw 31t of the other end and being joined the upper end of the valve rod of the application of force upward by valve spring 21s of the first Aspirating valves 21.
In the second air-breathing rocking arm 32, the roller 32r that axle is supported on an end contacts with the nose of cam 25k rolling of stopping of camshaft 25, is bolted in the tappet screw 32t of the other end and being joined the upper end of the valve rod of the application of force upward by valve spring 22s of the second Aspirating valves 22.
On the other hand, in the exhaust rocker arm 33, the roller 33r that axle is supported on an end contacts with the exhaust cam lug boss 25e rolling of camshaft 25, is bolted in the tappet screw 33t of the other end and being joined the upper end of the valve rod of the application of force upward by valve spring 23s of outlet valve 23.
The cam peak section of air inlet cam lug boss 25i (Japanese: カ system mountain) at the angle of swing place of the regulation of camshaft 25 the roller 31r of the first air-breathing rocking arm 31 is moved upward and the first air-breathing rocking arm 31 is swung, the tappet screw 31t of the other end opposing valve spring 21s and press the first Aspirating valves 21 thus opens 13 the opening towards the firing chamber of the first intakeport 15 in the moment of regulation.
Equally, the cam peak section of exhaust cam lug boss 25e is moved upward the roller 33r of exhaust rocker arm 33 at the angle of swing place of the regulation of camshaft 25 and exhaust rocker arm 33 is swung, the tappet screw 33t of the other end opposing valve spring 23s and press pressure exhaust valve 23 thus opens 13 the opening towards the firing chamber of relief opening 17 in the moment of stipulating.
But, the outer circumferential face of nose of cam 25k of stopping is roughly circumferential surface, when the nose of cam 25k that stops contacts with the roller 32r rolling of an end of the second air-breathing rocking arm 32, the second air-breathing rocking arm 32 swings hardly, and the second Aspirating valves 22 keeps cutting out 13 the opening towards the firing chamber of the second intakeport 16 and becomes and close the valve dormant state.
Yet in order to prevent producing fuel and accumulate closing under the valve dormant state, the nose of cam 25k that stops has small cam peak section at the angle of swing place identical with air inlet cam lug boss 25i, makes the second Aspirating valves 22 utmost points drive minutely valve.
4C up/down perforation ground, the cam chain chamber formation of long rectangle before and after being along the left side wall 51L of cylinder head 4, in the 4C of this cam chain chamber, the bearing 26 that carries out axle supporting in the left side of comparison camshaft 25 has a driven sprocket 30 to the outstanding left shaft end of left is chimeric, between driven sprocket 30 and the not shown driving sprocket wheel that is entrenched on the bent axle, set up chain 24, the rotation of bent axle is transmitted to camshaft 25 with 1/2nd rotational speed via chain 24, the first air-breathing rocking arm 31 and exhaust rocker arm 33 and the rotary synchronous ground of bent axle are swung, thereby the first Aspirating valves 21 and outlet valve 23 are carried out driven for opening and closing in the needed moment respectively.
Need to prove, by following variable stigmatic opening transmission device 40 the second air-breathing rocking arm 32 and the first air-breathing rocking arm 31 are being connected to when swinging integratedly, the second Aspirating valves 22 is carried out driven for opening and closing with the first Aspirating valves 21 in the identical moment, in moment beyond this, the second Aspirating valves 22 becomes and closes the valve dormant state.
Below, variable stigmatic opening transmission device 40 is described.
With reference to Fig. 1 and Fig. 2, the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 left and right sides are adjacent one another are and be to swing freely by pitman arm shaft 28 axles supportings, the bellying 31f, the 32f that bloat upward at the bearing part of the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 are formed with respectively the first bullport 31h and the second bullport 32h that wears abreast with pitman arm shaft 28, this first bullport 31h and the second bullport 32h with the first Aspirating valves 21 (and second Aspirating valves 22) close under the valve state about the mode that links to each other coaxially form with circular hole directly.
Need to prove that the first bullport 31h and the second bullport 32h are formed with diapire 31g, the 32g of hollow at mutual opposed opposition side.
The binding that the round-ended cylinder shape arranged remove sandwiched spring 41s between piston 41 and the diapire 31g and along Y-axis to sliding freely intercalation in the first bullport 31h, connection pin 42 along Y-axis to sliding freely intercalation in the second bullport 32h.
When closing of the first Aspirating valves 21 (and second Aspirating valves 22) links to each other about the first bullport 31h and the second bullport 32h under the valve state coaxially, if on the 42b of bar section of connection pin 42, be not applied with external force, then as shown in Figure 2, being removed piston 41 by the binding of the spring 41s application of force presses connection pin 42 to right-hand, cylinder body 42a is accommodated among the second bullport 32h fully, thereby make and link the left side of removing the cylinder body 42a that piston 41 joins and become same plane with the left open end of the second bullport 32h, so the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 can swing independently of each other.
Yet, when the 42b of bar section at connection pin 42 is applied with external force and connection pin 42 is pressed to left, the active force of connection pin 42 antagonistic spring 41s and will link and remove piston 41 and be pressed into, the cylinder body 42a of connection pin 42 enters also intercalation in the first bullport 31h, stride the two position of the first bullport 31h and the second bullport 32h and be positioned at, the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 link via connection pin 42 and swing integratedly thus.
And, if disappear to connection pin 42 externally applied forces, then under the effect of the active force of spring 41s, link and remove piston 41 connection pin 42 is pressed to right-hand, it is retreated and be received in the second bullport 32h, can remove binding thus.
Like this, by advancing of connection pin 42, the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 link and swing integratedly, by the binding that retreats to remove the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 of connection pin 42.
The bearing portion that carries out the axle supporting from the right-hand member to the pitman arm shaft 28 at rear is the outstanding bar support 57 that is formed with upward, drive link 43 along about connect this bar support 57 and be supported to slip freely.
The left end of drive link 43 be formed with hole enlargement the 43a of plectane section.
The left surface of the 43a of this plectane section and the intercalation connection pin 42 in the second bullport 32h of the second air-breathing rocking arm 32 opposed to the right-hand outstanding 42b of bar section.
Although connection pin 42 swings with the second air-breathing rocking arm 32, the 43a of plectane section of drive link 43 have all the time can with the opposed area of the 42b of bar section of the connection pin 42 that in the scope that can swing, swings.
The cast member that cylinder head 4 consists of for the nonmagnetic material by aluminum alloy system, as shown in Figures 3 and 4, on the periphery wall 51 of cylinder head 4, it is outstanding and along circumferential orientation and extended cold sink 53 from the outer circumferential face of this periphery wall 51 to be formed with abreast multi-disc on cylinder-bore axis (central axis of cylinder liner 12) direction.
In addition, the outstanding vertical rib 54 that is formed with the cylinder-bore axis almost parallel of the mode of the cold sink 53 that is arranged above and below with binding of the desired area on the periphery wall 51 of cylinder head 4.
Cold sink 53 is square in shown in Figure 4 overlooking under the observation, consists of and periphery wall 51 forms five limits by five sidewalls.
As shown in Figure 4, the upper end of cylinder head 4 be pentagon with the involutory involutory surface 52 of valve mechanism cover 5, this pentagonal involutory surface 52 is the end face of five sidewalls, and periphery wall 51 is by towards the left side wall 51L of left, towards right-hand right side wall 51R, form roughly five limit tubulars towards rearward rear sidewall 51B, the left front sidewall 51FL that takes back towards the place ahead, these five sidewalls of right front sidewall 51FR of taking over towards the place ahead thus.
The lower central of the rear sidewall 51B of described air-breathing binding opening portion 14c from this cylinder head 4 is outstanding, and the described exhaust connecting pipe 17c of section is outstanding from right front sidewall 51FR.
And, in the part that cold sink 53 is not set of the top substantial middle of the right side wall 51R of cylinder head 4 o 45 as actuator that variable stigmatic opening transmission device 40 is driven is installed from the outside.
Right side view with reference to cylinder head 4 is Fig. 5, on the outer surface that cold sink 53 is not set on the top of the right side wall 51R of cylinder head 4, be formed with the solenoid installation base 55f of section, 55b in front and back along involutory surface 52, and be formed with the solenoid installation base 55d of section below between the solenoid installation base 55f of section, the 55b, these three the solenoid installation base 55f of section, 55b, the 55d that have respectively tapped hole slightly give prominence to and form from the outer surface of right side wall 51R.
Substantial middle between the solenoid installation base 55f of section, the 55b of front and back is equipped with the circular hole 56 for the plunger 45p perforation of o 45.
The circular hole 56 of this right side wall 51R separates and drive link 43 the outstanding described bar support 57 that forms is coaxial with connecting to be supported on from right side wall 51R.
On the other hand, in the o 45, the 46f of mounting flange section along the open end that round-ended cylinder shape housing 46 is arranged forwards, backwards lower these three directions extend and form, each mounting hole of the end of the 46f of mounting flange section that extends to these three directions is corresponding with the tapped hole of three solenoid installation base 55f of section of the right side wall 51R of cylinder head 4,55b, 55d.
Therefore, the plunger 45p of o 45 is inserted in the circular hole 56, and offseting with the solenoid installation base 55f of section, 55b, the 55d of the right side wall 51R of cylinder head 4 respectively to the end of three extended mounting flange 46f of section of direction housing 46 simultaneously, make bolt 48 connect each mounting hole of the mounting flange 46f of section and be bolted in each tapped hole of the solenoid installation base 55f of section, 55b, 55d, thereby o 45 is installed on the right side wall 51R of cylinder head 4.
Because the solenoid installation base 55f of section, 55b, the 55d of Motionless electromagnetic solenoid 45 are slightly outstanding from the outer surface of right side wall 51R, therefore between right side wall 51R and o 45, form the space, between cylinder head 4 and o 45, accompany air layer 49.
Need to prove, be fixed with vibration-damped component 47 in the end of the plunger 45p that has connected circular hole 56.
Like this, when the right side wall 51R that o 45 is installed to cylinder head 4 is upper, as shown in Figure 2, the connecting circular hole 56 and join via vibration-damped component 47 and o 45 from the right side that is positioned at coaxial drive link 43 to the outstanding plunger 45p of left.
Fig. 2 is illustrated in o 45 and is under the erasing state, connection pin 42 retreats and removes the state of the binding of the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32, link under the relieving state at this, rotation by camshaft 25, the the first air-breathing rocking arm 31 that joins with air inlet cam lug boss 25i swings and the first Aspirating valves 21 is carried out driven for opening and closing, but swing hardly with the second air-breathing rocking arm 32 that the nose of cam 25k that stops joins, the second Aspirating valves 22 is become close the valve dormant state.
Variable stigmatic opening transmission device 40 becomes the binding relieving state when the low-speed running of internal-combustion engine 1, close the valve dormant state thereby the second Aspirating valves 22 is become, and only the first Aspirating valves 21 is carried out driven for opening and closing.
When o 45 is carried out excitation, plunger 45p gives prominence to and via vibration-damped component 47 drive link 43 is pressed to left, drive link 43 will be pressed to left with the connection pin 42 of the 43a of plectane section butt, when the first bullport 31h of the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 and the second bullport 32h are in when coaxial, connection pin 42 advances and the first air-breathing rocking arm 31 and the second air-breathing rocking arm 32 is linked to left.
When swinging with the first air-breathing rocking arm 31 that air inlet cam lug boss 25i joins by the rotation of camshaft 25, the the second air-breathing rocking arm 32 that links via connection pin 42 also swings integratedly, thereby the second Aspirating valves 22 and the first Aspirating valves 21 are carried out driven for opening and closing together.
Variable stigmatic opening transmission device 40 carries out excitation and becomes connecting state o 45 when the running up of internal-combustion engine 1, thereby the first Aspirating valves 21 and the second Aspirating valves 22 are carried out driven for opening and closing simultaneously.
The plunger 45p of o 45 does not directly join with the connection pin 42 that swings, and join with the drive link 43 that is clipped in the middle, therefore, the power because of the bending direction that produces with connection pin 42 sliding contacts that swing can not impact plunger 45p and o 45.
In addition, when making o 45 demagnetization, under the effect of the active force of spring 41s, connection pin 42 is retreated quickly, thereby make drive link 43 with the 42b of bar section sliding contact to right-hand movement, but owing between drive link 43 and plunger 45p, be folded with vibration-damped component 47, therefore can suppress the generation of the action sound between drive link 43 and the plunger 45p.
Then, the structure of cylinder head 4 is described in detail.
As mentioned above, cylinder head 4 consists of periphery wall 51 by left side wall 51L, right side wall 51R, rear sidewall 51B, left front sidewall 51FL, these five sidewalls of right front sidewall 51FR.
On the right side wall 51R that described o 45 is installed, the solenoid installation base 55f of section, the 55b on top, 55d periphery do not arrange cold sink 53, and the below of the first two solenoid installation base 55f of section, 55d does not arrange cold sink 53 yet, cave in to the inside and form recess 58 in the bottom that cold sink 53 is not set, be formed with the spark plug installation base section 59 (with reference to Fig. 2, Fig. 6) of spark plug 81 at the lower surface of this recess 58.
As shown in Figure 3, bottom at the adjacent right front sidewall 51FR of the right side wall 51R that this spark plug 81 and o 45 are installed, the exhaust connecting pipe 17c of section forwards takes over side-prominent like that as mentioned above, near the part that takes over of the outstanding bottom of the exhaust connecting pipe 17c of section of this right front sidewall 51FR and the bottom of adjacent left front sidewall 51FL does not arrange cold sink 53, do not arrange cold sink 53 left front sidewall 51FL the bottom to the inside front end cave in with attenuating and form recess 60.
On the exhaust connecting pipe 17c of section that forwards takes over side-prominent from right front sidewall 51FR, bloat to oblique upper left side and be formed with the installation of sensors boss part 61 (with reference to Fig. 7) of oxygen concentration sensor 82.
Namely, when the exhaust connecting pipe 17c of section by about half-and-half cut apart split surrounding wall portion when consisting of, oxygen concentration sensor 82 is installed in and among the exhaust connecting pipe 17c of section becomes splitting on the surrounding wall portion of opposition side (left side) with o 45 that be installed on right side wall 51R, as far as possible away from o 45 configurations.
With reference to Fig. 3 and Fig. 4, the front-end and back-end of erectting the bearing wall 62 that arranges on the right side of the cam chain chamber 4C that arranges along the left side wall 51L of cylinder head 4 are formed with fastening boss part 63,64, and this fastening boss part 63,64 is there to be the mode of bolt hole 63h, 64h to form along up/down perforation.
Right-hand between the fastening boss part 63 of front side relief opening 17 is clipped in, fastening boss part 65 is there to be the mode of bolt hole 65h to form along up/down perforation, and right-hand between the fastening boss part 64 of rear side first, second intakeport 15,16 is clipped in, fastening boss part 66 is to have the mode of bolt hole 66h to form along up/down perforation (with reference to Fig. 4).
The fastening boss part 65 of the front and back on right side, 66 upper-end surface become the involutory surface 52 involutory with valve mechanism cover 5.
Stud bolt (not shown) is run through among four fastening boss part 63,64,65,66 bolt hole 63h, 64h, 65h, the 66h and crankcase, cylinder block 3 and cylinder head 4 are tightened to one.
Cut open and the sectional view that obtains along the VIII-VIII line between roof 67 and the substrate wall 68 in the right side view of the cylinder head 4 at Fig. 6 and Fig. 7 shown in Figure 8 and the plan view.
With reference to Fig. 8, erect on the right side of cam chain chamber 4C between the fastening boss part 63 of front end of the bearing wall 62 that arranges and the relief opening 17 and offer the place ahead cooling airflow entrance 71, offer rear cooling airflow outlet 72 between the fastening boss part 64 of the rear end of bearing wall 62 and the first intakeport 15, front and back cooling air passway 70 is formed into rear cooling airflow outlet 72 from the place ahead cooling airflow entrance 71 along bearing wall 62.
The place ahead cooling airflow entrance 71 is formed on the inboard of recess 60, this recess 60 left inboard front end of front panel 51FL bottom caves in with attenuating, thus recess 60 guiding of being caved in by front end from the wind that travels in the place ahead and enter into the place ahead cooling airflow entrance 71 with attenuating.
Need to prove that rear cooling airflow outlet 72 also is formed on the inboard of the recess 69 of rear sidewall 51B bottom.
Minute buttress 73 by the plagioclase bar that forms in the central authorities of front and back cooling air passway 70 from the branch midway of front and back cooling air passway 70 and towards right-hand branch's cooling air passway 75 be formed on first, second intakeport 15,16 and relief opening 17 between.
Need to prove, minute buttress 73 its with the first intakeport 15 between also have the path that collaborates to branch's cooling air passway 75.
In addition, branch's cooling air passway 75 by about long rectification rib 74 be divided into two and be rectified, thereby form side cooling airflow outlet 76a, 76b by the recess 58 of right side wall 51R bottom.
Especially the side cooling airflow exports 76a and the spark plug 81 opposed (with reference to Fig. 2) that is installed in the spark plug installation base section 59.
Therefore, from the place ahead travel wind by the recess 60 of the left front sidewall 51FL of cylinder head 4 forwards cooling airflow entrance 71 import, and passed through the rear cooling airflow outlet 72 of rear sidewall 51B by conveying in front and back cooling air passway 70, and being branched rib 73 carries branch's cooling air passway 75 from branch midway, thereby by the outlet of side cooling airflow 76a, the 76b of right side wall 51R, thus can be effectively the roof 67 that forms firing chamber 13 and first, second intakeport 15,16, relief opening 17 be cooled off.
And because side cooling airflow outlet 76a and the spark plug 81 of branch's cooling air passway 75 are opposed, the cooling air that therefore flows out in side cooling airflow outlet 76a can cool off spark plug 81 effectively.
Then, the lubrication system in the cylinder head 4 is described.
Look under the observation on right side shown in Figure 6, with the vertical lubricating oil path P1 of the right side wall 51R up/down perforation of this cylinder head 4 between the solenoid installation base 55d of section of the solenoid installation base 55b of section of the rear side on the outstanding outer surface of upper that is formed at right side wall 51R and downside on the solenoid installation base 55b of section of rear side downward-extension.
And the horizontal lubricating oil path P2 that this vertical lubricating oil path P1 extends in the At The Height of the camshaft 25 of right side wall 51R and front and back reports to the leadship after accomplishing a task, and the obturation such as the fastened nut of upper end open.
Look under the observation on right side shown in Figure 6, horizontal lubricating oil path P2 extends along the approximate horizontal ground, bottom of the solenoid installation base 55d of section of downside.
The open rearward end tegmentum member of horizontal lubricating oil path P2 is inaccessible, and the front end of horizontal lubricating oil path P2 carries out the bearing recess 51p opening of axle supporting to the right-hand member to camshaft 25.
The right-hand member of camshaft 25 in bearing recess 51p, is formed on the opening surface of oil circuit 25p in the axle in the camshaft 25 to bearing recess 51p (with reference to Fig. 2) via bearing 28 intercalations.
Vertical lubricating oil path P3 extends upward from bearing recess 51p, and the upper end of vertical lubricating oil path P3 is to involutory surface 52 openings (with reference to Fig. 3).
Look under the observation vertical lubricating oil path P3 upward extension between the solenoid installation base 55f of section of front side and circular hole 56 on right side shown in Figure 6.
Therefore, halfway forwards bending and in horizontal lubricating oil path P2, flowing of the lubricant oil that in doubling as the bolt hole 66h of vertical lubricating oil path P1, rises, until bearing recess 51p, and among vertical lubricating oil path P3, rise and enter in the lubricating oil path of valve mechanism cover 5 from bearing recess 51p, and then scatter to valve actuating gear 20 from the end face of valve mechanism cover 5.
In addition, from bearing recess 51p to camshaft in the axle in 25 lubricant oil of oil circuit 25p shunting nose of cam 25i, the 25k of camshaft 25, the camming surface of 25e are lubricated.
In the variable stigmatic opening transmission device 40 of above such internal-combustion engine 1, the o 45 that connection pin 42 is retreated is installed in the solenoid installation base 55f of section of the right side wall 51R of cylinder head 4,55b, on the 55d, this connection pin 42 is with adjacent and two the first rocking arms 31 and the second rocking arm 32 that swing link, and at these solenoid installation bases 55f of section, 55b, near the vertical lubricating oil path P1 of the formation of 55d, horizontal lubricating oil path P2, vertical lubricating oil path P3, therefore pass through at vertical lubricating oil path P1, horizontal lubricating oil path P2, the lubricant oil that flows among the vertical lubricating oil path P3 cools off the solenoid installation base 55f of section, 55b, 55d and near, thereby the heat that can suppress cylinder head 4 rises to the caused temperature of heating of the conduction of o 45 and o 45 self.
Thereby, the cooling mechanisies such as cold sink or wind guide and heat dispersion sheet need to be set at o 45, and not need to make o 45 away from cylinder head 4, can guarantee the degrees of freedom of layout, and prevent the maximization of internal-combustion engine 1.
Owing to being positioned at, the solenoid installation base 55d of section of downside is enclosed in horizontal lubricating oil path P2 that bending forms and near the position of vertical lubricating oil path P3, therefore the solenoid installation base 55d of section and near cooling thereof can be effectively carried out, the heat of cylinder head 4 can be further suppressed to the situation of o 45 conduction.
The solenoid installation base 55f of section of front side be positioned at vertical lubricating oil path P3 near, the solenoid installation base 55b of section of rear side be positioned at vertical lubricating oil path P1 near, thereby the solenoid installation base 55f of section, 55b and near cooling thereof before and after can effectively carrying out can further suppress the heat of cylinder head 4 to the situation of o 45 conduction.
The right side wall 51R of cylinder head 4 be formed with the solenoid installation base 55f of section, 55b, 55d below separate and spark plug installation base section 59 that spark plug 81 is installed, between the solenoid installation base 55f of section, 55b, 55d and spark plug installation base section 59, be formed with horizontal lubricating oil path P2, the conduction of the heat that the spark plug 81 of therefore installing in spark plug installation base section 59 produces is hindered by the lubricant oil that flows in horizontal lubricating oil path P2, thereby can prevent the overheated of the o 45 installed at the solenoid installation base 55f of section, 55b, 55d.
Owing to be formed with the solenoid installation base 55f of section at the right side wall 51R that is in the cylinder head 4 that roughly erects state, 55b, 55d and spark plug installation base section 59, on the other hand, on this cylinder head 4, the upper surface of 13 roof 67 forms the rear cooling airflow outlet 72 front and back cooling air passways 70 that pass through from the place ahead cooling airflow entrance 71 of the left front sidewall 51FL of front side to rear sidewall 51B along the firing chamber, from the branch midway of front and back cooling air passway 70 and to the side cooling airflow outlet 76a on the top that approaches with spark plug installation base section 59 of the right side wall 51R that is formed with spark plug installation base section 59, branch's cooling air passway 75 that 76b passes through, and at the solenoid installation base 55f of section, 55b, the side cooling airflow outlet 76a of 55d and branch's cooling air passway 75, be formed with horizontal lubricating oil path P2 between the 76b, therefore by branch's cooling air passway 75 and from side cooling airflow outlet 76a, the cooling air that 76b flows through flows out spark plug 81 is cooled off towards being installed in spark plug 81 in the spark plug installation base section 59, and captured the heat of this spark plug 81 and the heat of the cooling air that heated up to being installed in the solenoid installation base 55f of section, 55b, the convection current of the o 45 on the 55d is subject at the solenoid installation base 55f of section, 55b, 55d and side cooling airflow outlet 76a, the lubricant oil that flows among the lubricating oil path P2 between the 76b hinders, thereby can prevent the overheated of o 45.
Because the solenoid installation base 55f of section, 55b, 55d gives prominence to and forms from the outer surface of the right side wall 51R of cylinder head 4, at the solenoid installation base 55f of section, 55b, form air layer 49 between the actuator 45 of the upper installation of 55d and the right side wall 51R of cylinder head 4, and lubricating oil path P1, P2, the part of P3 forms along this air layer 49, so lubricating oil path P1 by forming along air layer 49, P2, the lubricant oil that flows among the P3 will be towards the Cylinder Heat Wall cooling of air layer 49, and the effect of heat insulation by this chilled wall and air layer 49, the heat of cylinder head 4 can be suppressed significantly to the situation of o 45 transmission, thereby the overheated of o 45 can be prevented.
Claims (6)
1. the variable stigmatic opening transmission device of an internal-combustion engine, it is equipped on vehicle, driving by actuator (45) is advanced and retreat connection pin (42) between two rocking arms (31,32) that swing adjacent one another are, these two rocking arms (31,32) carry out driven for opening and closing to the internal combustion engine valve (21,22) that is arranged on the cylinder head (4)
By advancing of described connection pin (42), described adjacent rocking arm (31,32) mutually links and swings integratedly, and by retreating of described connection pin (42), described adjacent rocking arm (31,32) is disengaged and links and separate, the variable stigmatic opening transmission device of described internal-combustion engine is characterised in that
The more than one actuator assembly department (55f, 55b, 55d) that described actuator (45) arranges via the outer surface at the sidewall (51R) of cylinder head (4) and installing,
Be formed with lubricating oil path (P1, P2, P3) near the described actuator assembly department (55f, 55b, 55d) in the described sidewall (51R) of cylinder head (4).
2. the variable stigmatic opening transmission device of internal-combustion engine according to claim 1 is characterized in that,
Near bending or crooked and form at least one actuator assembly department (55d) of described lubricating oil path (P1, P2, P3) in a plurality of described actuator assembly departments (55f, 55b, 55d).
3. the variable stigmatic opening transmission device of internal-combustion engine according to claim 2 is characterized in that,
Near described at least one actuator assembly department (55d) other actuator assembly department (55f, 55b) in addition, also be formed with described lubricating oil path (P1, P3).
4. the variable stigmatic opening transmission device of each described internal-combustion engine is characterized in that according to claim 1～3,
Be formed with at the described sidewall (51R) of described cylinder head (4) and separate with the below of described actuator assembly department (55f, 55b, 55d) and the spark plug assembly department (59) of spark plug (81) is installed,
Between described actuator assembly department (55f, 55b, 55d) and described spark plug assembly department (59), be formed with described lubricating oil path (P2).
5. the variable stigmatic opening transmission device of internal-combustion engine according to claim 4 is characterized in that,
Described cylinder head (4) is in the state that roughly erects,
Sidewall (51R) the left and right sides either party of cylinder head (4) forms described actuator assembly department (55f, 55b, 55d) and described spark plug assembly department (59),
On cylinder head (4), the upper surface of the roof of (13) (67) is formed with the front and back cooling air passway (70) that passes through to the rear cooling airflow outlet (72) of rear sidewall (51B) from the place ahead cooling airflow entrance (71) of front panel (51FL) along the firing chamber, from the branch midway of described front and back cooling air passways (70) and to the side cooling airflow outlet (76a on the top that approaches with described spark plug assembly department (59) that forms the sidewall (51R) of stating to some extent spark plug assembly department (59), the branch's cooling air passway (75) that 76b) passes through
Between the side of described actuator assembly department (55f, 55b, 55d) and described branch cooling air passway (75) cooling air outflow (76a, 76b), be formed with described lubricating oil path (P2).
6. the variable stigmatic opening transmission device of each described internal-combustion engine is characterized in that according to claim 1～5,
Described actuator assembly department (55f, 55b, 55d) is outstanding from the outer surface of the described sidewall (51R) of described cylinder head (4) and actuator installation base section (55f, 55b, 55d) that form,
Between the described sidewall (51R) of described actuator (45) that described actuator installation base section (55f, 55b, 55d) installs and cylinder head (4), be formed with air layer (49),
The part of described lubricating oil path (P1, P2, P3) forms along described air layer (49).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-212780 | 2011-09-28 | ||
| JP2011212780A JP5771494B2 (en) | 2011-09-28 | 2011-09-28 | Variable valve operating device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103032126A true CN103032126A (en) | 2013-04-10 |
| CN103032126B CN103032126B (en) | 2015-04-29 |
Family
ID=48019450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210359430.3A Expired - Fee Related CN103032126B (en) | 2011-09-28 | 2012-09-24 | Variable valve transmission device of internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5771494B2 (en) |
| CN (1) | CN103032126B (en) |
| AR (1) | AR088057A1 (en) |
| BR (1) | BR102012024320A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608817A (en) * | 2019-02-26 | 2020-09-01 | 本田技研工业株式会社 | Saddle-ride type internal combustion engine for vehicle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6105410B2 (en) * | 2013-06-28 | 2017-03-29 | ヤマハ発動機株式会社 | engine |
| JP7274860B2 (en) * | 2018-12-26 | 2023-05-17 | カワサキモータース株式会社 | Motorcycle engine cooling structure |
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- 2012-09-25 BR BR102012024320A patent/BR102012024320A2/en not_active Application Discontinuation
- 2012-09-26 AR ARP120103566 patent/AR088057A1/en not_active Application Discontinuation
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2013072384A (en) | 2013-04-22 |
| BR102012024320A2 (en) | 2015-01-06 |
| CN103032126B (en) | 2015-04-29 |
| AR088057A1 (en) | 2014-05-07 |
| JP5771494B2 (en) | 2015-09-02 |
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