CN1576522A - Air valve driving device for internal combustion engine - Google Patents
Air valve driving device for internal combustion engine Download PDFInfo
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- CN1576522A CN1576522A CN 200410048131 CN200410048131A CN1576522A CN 1576522 A CN1576522 A CN 1576522A CN 200410048131 CN200410048131 CN 200410048131 CN 200410048131 A CN200410048131 A CN 200410048131A CN 1576522 A CN1576522 A CN 1576522A
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- valve
- rocking arm
- valve actuation
- contacting part
- guide portion
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- Valve-Gear Or Valve Arrangements (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention ralates to fully lubricating valve drive rocker arms and a connecting part of an engine valve while preventing the rigidity of the valve drive rocker arm from lowering, in a valve drive system of an internal combustion engine swingably supported with a rocker shaft where the valve drive rocker arms having a valve contact part always connected with a stem of the engine valve energized in the valve closing direction are arranged in a fixed position. An oil reservoir 57 is formed on an upper surface of a plurality of the rocker arms 25, 26 and 27 which are mutually adjoined containing the valve drive rocker arms 25 and 26. Guide parts 63 and 64 for leading oil overflowing from the oil reservoir 57 to the connecting part side of a stem 18a of the engine valve 18 and the contact parts 25a and 26a are provided on an external surface of the valve drive rocker arms 25 and 26.
Description
Technical field
The present invention relates to a kind of valve device of internal-combustion engine, the valve actuation rocking arm of this valve device has the valve contacting part that is connected with the valve stem that is subjected to the engine valve of the application of force of valve-closing direction, and this driving rocking arm can joltily be supported by the pitman arm shaft that is configured in the fixed position.
Background technique
This in the past valve device, for example by patent documentation 1 grade as can be known, lubricating of the joint of the valve contacting part that the valve stem of engine valve and valve actuation rocking arm are had finished by the spittle oil in the valve Transmission Room of having accommodated valve device.
No. 2560095 communique of patent
Yet above-mentioned in the past by spittle oil carry out lubricated, when the internal-combustion engine low speed rotation, when perhaps the joint of valve contacting part that is had when the valve actuation rocking arm and engine valve is configured in higher position in the valve Transmission Room, spittle oil is difficult to arrive described joint, may cause the described joint can not be by sufficient lubrication.
Therefore form oil groove on the top of valve actuation rocking arm, also designed the structure the valve stem of the through hole importing engine valve of lubricant oil on being arranged on described oil groove diapire, but, may cause the rigidity of valve actuation rocking arm to reduce owing to be provided with above-mentioned through hole.
Summary of the invention
The present invention In view of the foregoing finds out, and its purpose is to provide a kind of valve device of internal-combustion engine, both can avoid valve actuation rocking arm rigidity to reduce, and can make the joint of valve actuation rocking arm and engine valve obtain sufficient lubrication again.
For achieving the above object, the invention discloses a kind of valve device of internal-combustion engine, the driving rocking arm of this valve device has the valve contacting part that always is connected with the valve stem that is subjected to the engine valve of the application of force of valve-closing direction, and this driving rocking arm can joltily be supported by the pitman arm shaft that is configured in the fixed position, it is characterized in that, comprising described valve actuation rocking arm on a plurality of rocking arms of the interior configuration that adjoins each other, perhaps on described valve actuation rocking arm, be formed with oil groove, outer surface at described valve actuation rocking arm, be provided with guide portion, the lubricant oil that is used for overflowing from described oil groove imports the valve stem of described engine valve and the joint of described valve contacting part.
According to this structure, the lubricant oil that overflows from oil groove is guided by guide portion, the joint of the valve contacting part that the valve stem of IC engine supply valve and valve actuation rocking arm are had so lubricant oil fully can be supplied with the joint of valve actuation rocking arm and engine valve, reaches sufficient lubrication.And owing to be used for guiding the guide portion of lubricant oil to be arranged on the outer surface of valve actuation rocking arm, so the setting of guide portion can not cause the rigidity of valve actuation rocking arm to reduce.
On the basis of above-mentioned first kind of transmission device, second kind of transmission device disclosed by the invention has on the described valve actuation rocking arm that is shaken the shaking bearing portion of supporting freely by pitman arm shaft, also be provided with: a pair of described valve contacting part, a pair of first of these two valve contacting parts and the described shaking bearing portion that connect links wall, and the second binding wall that connects described two contacting parts, described oil groove is by described shaking bearing portion, described two first binding walls and second link wall and surround, be formed on described valve actuation rocking arm above, be formed the described guide portion that tilts towards two valve contacting parts and downwards along with from the central part between described two valve contacting parts, link outstanding setting the on the outer side surface of wall second at least at the opposite side of described oil groove.According to described structure, can guide lubricant oil by guide portion, and can improve second rigidity that links wall, and can be with along with towards two valve contacting parts and the simple shape of the described guide portion that tilts downwards will be supplied with a pair of valve contacting part respectively from the lubricant oil that oil groove overflows.
On the basis of above-mentioned second kind of transmission device, in the third transmission device of the present invention, described guide portion is formed its thickness along the axial direction of described valve stem, along with the central part between described two valve contacting parts becomes big.According to described structure, guide portion has improved the rigidity that easily causes the central part of the second low binding wall of rigidity owing to leave a pair of valve contacting part.
On the basis of above-mentioned second kind or the third transmission device, in the of the present invention the 4th in the transmission device, described guide portion is set at second and links on wall and the described two valve contacting parts, and its two ends extend to described two valve contacting parts, and the two ends of described guide portion are side-prominent to described engine valve from the bottom of described two valve contacting parts.According to described structure, make to be guided the lubricant oil that comes further to flow energetically to the engine valve side by guide portion, the valve stem of the abundant IC engine supply valve of lubricant oil and the linking department of valve contacting part can be reached sufficient lubrication.
On the basis of first kind of transmission device of the present invention, in the 5th kind of transmission device of the present invention, the shaking bearing portion of described valve actuation rocking arm, and the free rocking arm support that also significantly shakes downwards of comparable this valve actuation rocking arm, by common pitman arm shaft supporting and adjacent to each other, described oil groove be formed on described valve actuation rocking arm and free rocking arm above, change between the mechanism at the shaking bearing portion of described each rocking arm and valve operating characteristic and to dispose, wherein valve operating characteristic change mechanism is arranged on each rocking arm and the binding of changeable described each rocking arm and non-binding, on free rocking arm, be formed with ring-type sliding contacting part with the sliding contact of described valve actuation rocking arm, surround described pitman arm shaft, also be formed with the circular-arc sliding contacting part that extends out from described ring-type sliding contacting part simultaneously, its be positioned at described valve operating characteristic change mechanism the below and with the sliding contact of described valve actuation rocking arm.According to described structure, no matter where free rocking arm is as also significantly shaking downwards than valve actuation rocking arm, all can avoid changing the interference of the component part of mechanism with valve operating characteristic, and can prevent that the oil groove of lubricant oil above valve actuation rocking arm and free rocking arm from falling, and can store in oil groove lubricant oil fully.
Description of drawings
Fig. 1 is the partial longitudinal section of first embodiment's internal-combustion engine, along the sectional drawing of the 2-2 line of Fig. 1.
Fig. 2 be Fig. 12 to view.
Fig. 3 is the 3-3 line sectional drawing of Fig. 2.
Fig. 4 is the 4-4 line sectional drawing of Fig. 1.
Fig. 5 is the stereogram of free rocking arm.
Fig. 6 is the partial longitudinal section of second embodiment's internal-combustion engine, along the sectional drawing of the 6-6 line of Fig. 7.
Fig. 7 be Fig. 67 to view.
Fig. 8 is the sectional view along the 8-8 line of Fig. 6.
Fig. 9 be Fig. 69 to view.
Figure 10 is the figure of the 3rd embodiment's corresponding diagram 9.
Symbol description:
18 intake valves as engine valve
The 18a valve stem
24,68 pitman arm shafts
25,26,69,69 ' valve actuation rocking arm
25a, 26a, 69a valve contacting part
25b, 26b, 27a, 69b shaking bearing portion
27 rocking arms
57,75 oil grooves
63,64,77,77 ' guide portion
69c first joint
69d second joint
Embodiment
Below, based on embodiments of the invention shown in the drawings embodiments of the invention are described.
Fig. 1-Fig. 5 represents the first embodiment of the present invention, and Fig. 1 is the partial longitudinal section of internal-combustion engine, along the sectional drawing of the 2-2 line of Fig. 1, Fig. 2 be Fig. 12 to view, Fig. 3 is the 3-3 line sectional drawing of Fig. 2, and Fig. 4 is the 4-4 line sectional drawing of Fig. 1, and Fig. 5 is the stereogram of free rocking arm.
At first, in Fig. 1-Fig. 3, make the cylinder block 11 of the internal-combustion engine of cylinder-bore axis inclination be provided with cylinder barrel 13, piston 14 is slidably chimeric with this cylinder barrel 13, firing chamber 15 towards the top of piston 14 forms between cylinder head 12 and cylinder block 11, this cylinder head 12 is provided with a pair of suction port 16 that can be communicated with firing chamber 15 ... and while and this suction port 16 ... be communicated with and be opened on the intakeport 17 of a side of cylinder head 12, can open and close suction port 16 respectively ... the intake valve 18 as engine valve, 18 valve stem 18a ... with the guide cylinder 19 that is arranged on the cylinder head 12 ... slidably chimeric, be arranged on described valve stem 18a ... the cover for seat 20 of upper end, 20 and cylinder head 12 between, be provided with valve spring 21,21, to intake valve 18,18 apply the power to the valve-closing direction.
Described two intake valves 18,18 are by valve device 22A driven opening, and this valve device 22A has: camshaft 23, and its axis is parallel with crankshaft center line not shown in the figures; Pitman arm shaft 24, the parallel axes of its axis and this camshaft 23; A pair of valve actuation rocking arm 25,26 and free rocking arm 27, they can joltily be supported by pitman arm shaft 24.
Described camshaft 23 rotates and is bearing in freely on the cylinder head 12, relies on the rotational power that comes with 1/2 reduction speed ratio transmission from bent axle to rotate, and pitman arm shaft 24 fixed configurations are above camshaft 23.
A pair of valve actuation rocking arm 25,26 and free rocking arm 27, be configured to free rocking arm 27 and be clipped in form between the two valve actuation rocking arms 25,26, the 25b of shaking bearing portion, 26b, the 27a that are separately positioned on these rocking arms 25,26,27 can joltily be supported by common pitman arm shaft 24.Two valve actuation rocking arms 25,26 one respectively have valve stem 18a with two intake valves 18,18 ... the valve contacting part 25a, the 26a that are connected, be threaded on valve contacting part 25a, the 26a and described valve stem 18a ... the contacted tappet screw 28,28 in upper end, and can regulate advance and retreat position.Therefore two valve actuation rocking arms 25,26 are connected with intake valve 18,18 always and link.
Camshaft 23 is provided with valve cam 32 and a pair of ridge 33,34, wherein valve cam 32 makes a roller 29 that is bearing on the free rocking arm 27 contact with its rolling, a pair of ridge 33,34 makes and is arranged on two cam slide 30,31 and its sliding contacts that drive on the rocking arm 25,26, valve cam 32 is formed to have and is used to open and close intake valve 18 ... cam profile, ridge 33,34 is configured to make intake valve 18 ... essence is closed.Therefore, intake valve 18 ... can under two valve actuation rocking arms 25,26 and state that free rocking arm 27 is connected, do on-off action, and when two valve actuation rocking arms 25,26 were disengaged with being connected of free rocking arm 27, be in the valve-closing dormant state of essence.
Refer again to Fig. 4, two valve actuation rocking arms 25,26 and free rocking arm 27 are provided with valve operating characteristic and change mechanism 36, and the connection that is used for switching with oil pressure two valve actuation rocking arms, 25,26 free relatively rocking arms 27 is connected with removing.
This valve operating characteristic changes mechanism 36 to have: connecting pin 38, and first hydraulic chamber 37 that the one end forms towards the inside at a valve actuation rocking arm 25, and chimeric slidably with described this valve actuation rocking arm 25 and free rocking arm 27; Connecting pin 39, the other end of one end and described connecting pin 38 is slidingly connected, and chimeric slidably with free rocking arm 27 and another valve actuation rocking arm 26; Pin 40, the other end of one end and described connecting pin 39 be slidingly connected and the other end of this pin 40 towards second grease chamber 41 of formation in described another valve actuation rocking arm 26; Returning spring 42 is housed in first hydraulic chamber 37 and is arranged between described valve actuation rocking arm 25 and the connecting pin 38.
Change in the mechanism 36 at this valve operating characteristic, when 37 effects of first hydraulic chamber have oil pressure, as shown in Figure 4, interconnected connecting pin 38,39 and sell 40 and move for minimum position to the volume that makes second hydraulic chamber 41, by connecting pin 38, a valve actuation rocking arm 25 is connected with free rocking arm 27, and by connecting pin 39, free rocking arm 27 is connected with another valve actuation rocking arm 26.And when 41 effects of second hydraulic chamber have oil pressure, interconnected connecting pin 38,39 and sell 40 and move for minimum position to the volume that makes first hydraulic chamber 37, surface of contact by making connecting pin 38,39 is between a valve actuation rocking arm 25 and free rocking arm 27, remove being connected of described valve actuation rocking arm 25 and free rocking arm 27, by making connecting pin 39 and selling 40 surface of contact between free rocking arm 27 and another valve actuation rocking arm 26, remove being connected of free rocking arm 27 and described another valve actuation rocking arm 26.
Valve operating characteristic changes mechanism 36 like this, by respectively to one of them hydraulic chamber effect oil pressure of first, second hydraulic chamber 37,41, free rocking arm 27 is switched with removing to be connected to the connection of two valve actuation rocking arms 25,26, change intake valve 18 ... performance characteristic.Returning spring 42 is in engine stops and correspondingly all do not have under the state of oil pressure effect in first, second hydraulic chamber 37,41, as long as it is just passable to apply the spring force that prevents from respectively to sell 38,39,40 unsettled sizes.
The inside that pitman arm shaft 24 is embedded with this pitman arm shaft 24 is divided into two-part partition member 43, and by this partition member 43, the inside of pitman arm shaft 24 has formed the first and second separate oily paths 44,45.
In addition, on a valve actuation rocking arm 25, be provided with first annular slot 46 and first connecting path 47 that is connected first annular slot 46 and second hydraulic chamber 37 around pitman arm shaft 24.On another valve actuation rocking arm 26, be provided with second annular slot 48 and second access 49 that is connected second annular slot 48 and second hydraulic chamber 41 around pitman arm shaft 24.First intercommunicating pore 50 that the first oily path 44 is communicated with first annular slot 46 is arranged on the pitman arm shaft 24, second intercommunicating pore 51 that the second oily path 45 is communicated with second annular slot 48 is arranged on described partition member 43 and the pitman arm shaft 24, promptly how the axis no matter two valve actuation rocking arms 25,26 center on pitman arm shaft 24 shakes, the first oily path 44 all can be communicated with first hydraulic chamber 37 always, and the second oily path 45 all can be communicated with second hydraulic chamber 41 always.
In addition, valve operating characteristic change mechanism 36 with free rocking arm 27 under the state that the connection of two valve actuation rocking arms 25,26 is removed, idle running (lost motion) spring 52 applies spring force, free rocking arm 27 is given as security on the valve cam 32 of camshaft 23, this idle running spring 52 is arranged between cylinder head 12 and the free rocking arm 27, and its part is housed in top the having in the bottom outlet 53 that is arranged at cylinder head 12.
Described first, second oily path 44,45 is connected with oil pressure source by oil pressure control valve not shown in the figures, is supplied with the oil pressure of the lubricant oil of first, second oily path 44,45 by the control of described oil pressure control valve.
Be fed to the part of the lubricant oil of first hydraulic chamber 37 from the first oily path 44, an and part that is fed to the lubricant oil of second hydraulic chamber 41 from the second oily path 45, be supplied between described two valve actuation rocking arms 25,26 and the pitman arm shaft 24, and spill from first, second annular slot 46,48, the lubricant oil that spills is to being lubricated between two valve actuation rocking arms 25,26 and free rocking arm 27 and the pitman arm shaft 24.
At the contiguous mutually described two valve actuation rocking arms 25,26 that are provided with of the axial direction of pitman arm shaft 24 and above the free rocking arm 27, be provided with recess 54,55,56 respectively, be used to assist to be configured in the 25b of shaking bearing portion, 26b, 27a of described rocking arm 25,26,27 and described valve operating characteristic and change oil groove 57 work between the mechanism 36, above the two valve actuation rocking arms 25,26, one is outstanding to be provided with lug boss 58,59, is used at the axial direction of pitman arm shaft 24 two ends of described oil groove 57 being limited.
Refer again to Fig. 5, the bi-side of the 27a of shaking bearing portion of free rocking arm 27 are formed with the ring-type sliding contacting part 60 of protuberance slightly with valve actuation rocking arm 25,26 sliding contacts of the both sides of this free rocking arm 27, and around pitman arm shaft 24.
In addition, when the connection of two valve actuation rocking arms 25,26 and free rocking arm 27 being removed by valve operating characteristic change mechanism 36, free rocking arm remains static by 32 liang of valve actuation cams of valve cam 25,26, and free rocking arm 27 to two valve actuation rocking arms 25,26 also significantly shake downwards.Under this state, make valve operating characteristic change connecting pin 38,39 sliding contact sleekly between a valve actuation rocking arm 25 and free rocking arm 27 of mechanism 36, connecting pin 39 and sell 40 sliding contacts sleekly between free rocking arm 27 and another valve actuation rocking arm 26, need accomplish not make connecting pin 39 to contact with two valve actuation rocking arms 25,26, in the valve device in the past, change the part that mechanism 36 is set at described valve operating characteristic, between two valve actuation rocking arms 25,26 and free rocking arm 27, form the gap respectively.
Yet described oily mortise 57 is at each rocking arm 25,26,27 form above, be configured in the 25b of shaking bearing portion, 26b, 27a and described valve operating characteristic change between the mechanism 36, if the valve mechanism transmission device is such as described in the past, change the part that mechanism 36 is set at valve operating characteristic, in two valve actuation rocking arms 25,26 and free rocking arm 27 between on whole girth, all form the gap, then be imported into the lubricant oil in the oil groove 57, can be from two valve actuation rocking arms 25,26 and free rocking arm 27 between the gap fall the below, lubricant oil is difficult to store in oil groove 57.
Therefore, described valve operating characteristic change mechanism 36 below circular-arc sliding contacting part 61 for swell slightly with 25,26 sliding contacts of both sides, from described ring-type sliding contacting part 60 extensions, integrally formed on the bi-side of free rocking arm 27.
In addition, make two valve actuation rocking arms 25 when changing mechanism 36 by valve operating characteristic, 26 and the connection of free rocking arm 27 when removing, the two valve actuation rocking arms 25 that free rocking arm 27 remains static in its both sides relatively, 26, change the equipping position of mechanism 36 at described valve operating characteristic, move downwards, described circular-arc sliding contacting part 61, do not change two end in contact of the connecting pin 39 of mechanism 36 with valve operating characteristic, and two circular-arc sliding contacting parts 61 and two valve actuation rocking arms 25,26 sliding contact, thereby can avoid lubricant oil from two valve actuation rocking arms 25,26 and free rocking arm 27 between fall the below, lubricant oil is fully stored in oil groove 57.
Be respectively arranged with on the ring-type sliding contacting part 60 of the bi-side of free rocking arm 27 steering channel 62 in the importing of the lubricant oil between pitman arm shaft 24 and each rocking arm 25～27 oil groove 57 ..., lubricant oil is supplied to the oil groove 57 between pitman arm shaft 24 and each rocking arm 25～27.
In addition, on the interior side external surface of valve contacting part 25a, the 26a of two valve actuation rocking arms 25,26, be wholely set guide portion 63,64, it is outstanding to the inside, and the lubricant oil that is used for overflowing from described oil groove 57 is directed to the front end of valve contacting part 25a, 26a.Promptly with described intake valve 18 ... the joint of valve stem 18a.
Effect to this first embodiment is illustrated below.Free rocking arm 27 and at the both sides of this free rocking arm 27 and a pair of valve actuation rocking arm 25 of its neighbor configuration, 26 can joltily be bearing on the pitman arm shaft 24, two valve actuation rocking arms 25 of mutual neighbor configuration, 26 and free rocking arm 27 above, be formed with oil groove 57, be used for guiding lubricant oil to supply with between pitman arm shaft 24 and described each rocking arm 25～27, two valve actuation rocking arms 25, the 26 valve contacting part 25a that had, on the interior side external surface of 26a, be provided with guide portion 63,64, the lubricant oil that is used for overflowing from described oil groove 57 is directed to and intake valve 18 ... the joint of valve stem 18a.
Owing to supply with and intake valve 18 by guide portion 63,64 guiding from the lubricant oil that oil groove 57 overflows ... valve stem 18a ... the valve contacting part 25a that is had with valve actuation rocking arm 25,26, the joint of 26a, so lubricant oil can fully be fed to valve actuation rocking arm 25,26 and intake valve 18 ... joint, reach sufficient lubrication.
In addition, because the guide portion 63,64 of guiding lubricant oil is arranged on the valve contacting part 25a of valve actuation rocking arm 25,26, the outer surface of 26a, so can not cause the rigidity of valve actuation rocking arm 25,26 to reduce because of guide portion 63,64 is set.
Fig. 6～Fig. 9 represents the second embodiment of the present invention.To the additional same-sign of the part consistent with described first embodiment.Fig. 6 is the partial longitudinal section of internal-combustion engine, Fig. 7 be Fig. 67 to view.Fig. 8 is the sectional view along the 8-8 line of Fig. 6.Fig. 9 be Fig. 69 to view.
In Fig. 6～Fig. 9, dispose a pair of intake valve 18 on the cylinder head 12 as engine valve ..., be subjected to the application of force of valve spring 21, but can carry out on-off action to the valve-closing direction.Drive two intake valves 18 ... the valve device 22b that opens and closes has: the crankshaft center line of not representing in the camshaft 67, its axis and figure is parallel; Pitman arm shaft 68, it has the axis parallel with this camshaft 67; Valve actuation rocking arm 69 can joltily be supported by pitman arm shaft 68.
Valve actuation rocking arm 69, one has: be divided into two strands a pair of valve contacting part 69a, 69a, it extends to two intake valves 18 ... valve stem 18a; The 69b of shaking bearing portion can joltily be supported by described pitman arm shaft 68.On described two valve contacting part 69a, the 69a, be threaded and described valve stem 18a ... the tappet screw 70,70 of last end in contact, and can regulate advance and retreat position.
Be formed with coaxial with it grease channel 73 in the pitman arm shaft 68, pitman arm shaft 68 is provided with guide hole 74,74, and a part that is used for flowing through the lubricant oil of described grease channel 73 imports between valve actuation rocking arm 69 and the pitman arm shaft 68.
Refer again to Fig. 9, be wholely set a pair of first connecting wall 69c, the 69c that connect described two valve contacting part 69a, 69a and the 69b of shaking bearing portion on the valve actuation rocking arm 69, with the second connecting wall 69d that is connected described two 69a, 69a, be formed with oil groove 75 above the valve actuation rocking arm 69, surrounded by the 69b of shaking bearing portion, described two first connecting wall 69c, 69c and the second connecting wall 69d, valve actuation rocking arm 69 is provided with bullport 76, is used for the lubricant oil between pitman arm shaft 68 and the valve actuation rocking arm 69 is imported oil groove 75.That is, lubricant oil is supplied to oil groove 75 between pitman arm shaft 68 and valve actuation rocking arm 69.
In addition, on valve actuation rocking arm 69, at least at the outer side external surface of the second connecting wall 69d that connects two valve contacting part 69a, 69a, promptly at least at the outer side surface of the second connecting wall 69d with respect to the opposite side of oil groove 75, one is provided with guide portion 77 highlightedly, be used for to be directed to the front end of valve contacting part 69a, 69a, i.e. this valve contacting part 69a, 69a and described intake valve 18 from the lubricant oil that described oil groove 75 overflows ... the joint of valve stem 18a.In this second embodiment, guide portion 77 is by the outstanding outer side surface that is arranged on the second connecting wall 69d and two valve contacting part 69a, 69a of one, and its two ends extend to two valve contacting part 69a, 69a.
In addition, described guide portion 77 is formed, make the lubricant oil that overflows from described oil groove 75 along with tilting towards two valve contacting part 69a, 69a downwards from the central part between described valve contacting part 69a, the 69a, be that guide portion 77 is formed to have from the central part between two 69a, the 69a and divides the separate section 77a open and a pair of downward guide portion 77b, the 77b that extends respectively from the lower end, both sides of this separate section 77a downwards to two valve contacting part 69a, 69a.
In addition, described guide portion 77 is formed its thickness along the axial direction of the valve stem 18a of intake valve 18, becomes big along with the central part between described two valve contacting part 69a, 69a.In this second embodiment, 77a forms triangle with separate section, and is that described two downward guide portion 77b, 77b form bottom from described two valve contacting part 69a, 69a to intake valve 18 with the two ends of guide portion 77 ... side-prominent.
According to this second embodiment, separate from the lubricant oil directed section 77 that oil groove 75 overflows, towards two intake valves 18 ... be directed into intake valve 18 simultaneously ... valve stem 18a and the joint of two valve contacting part 69a, 69a, identical with described first embodiment, lubricant oil fully can be supplied with valve actuation rocking arm 69 and intake valve 18 ... joint, reach sufficient lubrication.
In addition, the two ends of guide portion 77 extend to two valve contacting part 69a, 69a, and be arranged on the second connecting wall 69d and described two valve contacting part 69a, the 69a, the two ends of guide portion 77 than the bottom of two valve contacting part 69a, 69a to intake valve 18 ... side-prominent, so guide the lubricant oil that comes more energetically to intake valve 18 by guide portion 77 ... side flow, thereby lubricant oil fully can be supplied with intake valve 18 ... valve stem 18a ... joint with 69a, 69a reaches sufficient lubrication.
Figure 10 represents the third embodiment of the present invention, with the additional identical symbol of the corresponding part of described second embodiment.
Be formed with in the above the valve actuation rocking arm 69 of oil groove 77 ' on, be wholely set the second connecting wall 69d, be used to connect a pair of valve contacting part 69a, 69a, at the outer surface of at least the second connecting wall 69d promptly on the outer side surface of the second connecting wall 69d with respect to the opposite side of oil groove 75, one is outstanding be provided with guide portion 77 ', its lubricant oil that is used for overflowing from oil groove 75 is directed to valve contacting part 69a, 69a, and described intake valve 18 ... the joint of valve stem 18a.And in the 3rd embodiment, guide portion 77 ' one is outstanding on the outer side surface of the second connecting wall 69d and two valve contacting part 69a, 69a to be provided with, and its two ends extend to two valve contacting part 69a, 69a.
Described guide portion 77 ' be formed makes from described 75 lubricant oil that overflow along with tilting downwards towards two valve contacting part 69a, 69a from the central part between described 69a, the 69a.Be that described guide portion 77 ' be formed has from the central part between two valve contacting part 69a, the 69a and divides separate section 77a ' that opens and a pair of downward guide portion 77b, the 77b that extends respectively from the lower end, both sides of this separate section 77a ' downwards to two valve contacting part 69a, 69a.
According to the 3rd embodiment, from lubricant oil directed section 77 that oil groove 75 overflows ' separately flow to two intake valves 18 ... and be directed into the valve stem 18a of intake valve 18 and the joint of two valve contacting part 69a, 69a, identical with described second embodiment, the 3rd embodiment can fully supply with lubricant oil the joint of valve actuation rocking arm 69 and intake valve 18, reaches sufficient lubrication.
More than, embodiments of the invention are illustrated, but the invention is not restricted to described embodiment, can do numerous variations to not breaking away from described the present invention of claim scope.
For example also can the valve actuation rocking arm with a plurality of valve contacting parts with the valve actuation rocking arm in abutting connection with configuration and can switch being connected and removing other formation oil grooves above rocking arm be connected of valve actuation rocking arm.
According to the structure of first kind of transmission device of the present invention in the summary of the invention, both can avoid the rigidity of valve actuation rocking arm low, lubricant oil fully can be supplied with the joint of valve actuation rocking arm and engine valve again, reach sufficient lubrication.
In addition, structure according to second kind of transmission device of the present invention in the summary of the invention, can be can improve the second connecting wall rigidity and, will fully supply with a pair of valve contacting part from the lubricant oil that oil groove overflows along with the simple shape of the guide portion that tilts towards two valve contacting parts and downwards.
According to the structure of the third transmission device of the present invention in the summary of the invention, improved the rigidity that causes the central part of the second low connecting wall of rigidity owing to leave a pair of valve contacting part easily by guide portion.
According to the structure of the 4th kind of transmission device of the present invention in the summary of the invention, can allow the lubricant oil that comes with the guide portion guiding flow to engine valve energetically, with the valve stem of the abundant IC engine supply valve of lubricant oil and the joint of valve contacting part, reach sufficient lubrication.
In addition, structure according to the 5th kind of transmission device of the present invention in the summary of the invention, can avoid changing the interference of the component part of mechanism with valve operating characteristic, simultaneously can prevent that lubricant oil from falling from valve actuation rocking arm and the oil groove above the free rocking arm, fully stores in oil groove lubricant oil downwards.
Claims (5)
1. the valve device of an internal-combustion engine, the valve actuation rocking arm (25,26 of this valve device; 69,69 ') the valve contacting part (25a, the 26a that are connected with the valve stem (18a) of engine valve (18) had always; 69a), wherein valve stem (18a) is subjected to the application of force to the valve-closing direction, and described valve actuation rocking arm can joltily be supported by the pitman arm shaft that is configured in the fixed position (24,68), it is characterized in that, comprising described valve actuation rocking arm (25,26) on a plurality of rocking arms (25,26,27) of the interior configuration that adjoins each other, perhaps on described valve actuation rocking arm (69,69 '), be formed with oil groove (57,75), at described valve actuation rocking arm (25,26; 69,69 ') outer surface, be provided with guide portion (63,64; 77,77 '), be used for importing the valve stem (18a) and described valve contacting part (25a, 26a of described engine valve (18) from described oil groove (57, the 75) lubricant oil that overflows; Joint 69a).
2. the valve device of internal-combustion engine according to claim 1, it is characterized in that, has the described valve actuation rocking arm (69 that shakes the shaking bearing portion (69b) of supporting freely by pitman arm shaft (68), 69 ') on, be provided with: a pair of described valve contacting part (69a), a pair of first of these two valve contacting parts (69a) and the described shaking bearing portion (69b) that connect links wall (69c), and the second binding wall (69d) that connects described two valve contacting parts (69a), described oil groove (75) is by described shaking bearing portion (69b), described two first binding walls (69c) and second link wall (69d) and surround and be formed on described valve actuation rocking arm (69,69 ') above, be formed the described guide portion (77 that tilts towards two valve contacting parts (69a) and downwards along with from the central part between described two valve contacting parts (69a), 77 '), in the opposite side outstanding setting on the outer side surface of the second binding wall (69d) at least of described oil groove (75).
3. the valve device of internal-combustion engine according to claim 2, it is characterized in that, described guide portion (77) is formed its thickness along the axial direction of described valve stem (18a), becomes big along with the central part between described two valve contacting parts (69a).
4. according to the valve device of claim 2 or 3 described internal-combustion engines, it is characterized in that, described guide portion (77,77 ') is set at second and links on wall (69d) and the described two valve contacting parts (69a), and its two ends extend to described two valve contacting parts (69a), and the two ends of described guide portion (77,77 ') are also more side-prominent to described engine valve (18) than the bottom of described two valve contacting parts (69a).
5. the valve device of internal-combustion engine according to claim 1, it is characterized in that, described valve actuation rocking arm (25,26) (25b of shaking bearing portion, 26b), and comparable this valve actuation rocking arm (25, the shaking bearing portion (27a) of the free rocking arm (27) that 26) also significantly shakes downwards, by common pitman arm shaft (24) supporting and adjacent to each other, described oil groove (57) is formed on described valve actuation rocking arm (25,26) and free rocking arm (27) above, be configured in described each rocking arm (25,26,27) (25b of shaking bearing portion, 26b, 27a) and valve operating characteristic change between the mechanism (36), wherein valve operating characteristic change mechanism (36) is arranged on each rocking arm (25～27) and the binding and the non-binding of changeable described each rocking arm (25～27), on free rocking arm (27), be formed with and described valve actuation rocking arm (25,26) the ring-type sliding contacting part (60) of sliding contact, it surrounds described pitman arm shaft (24), also be formed with the circular-arc sliding contacting part (61) that extends out from described ring-type sliding contacting part (60) simultaneously, its be positioned at described valve operating characteristic change mechanism (36) the below and with described valve actuation rocking arm (25,26) sliding contact.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP172274/2003 | 2003-06-17 | ||
| JP2003172274A JP4318969B2 (en) | 2003-06-17 | 2003-06-17 | Valve operating device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1576522A true CN1576522A (en) | 2005-02-09 |
| CN1312383C CN1312383C (en) | 2007-04-25 |
Family
ID=34096476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100481313A Expired - Fee Related CN1312383C (en) | 2003-06-17 | 2004-06-16 | Air valve driving device for internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4318969B2 (en) |
| CN (1) | CN1312383C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161998B (en) * | 2006-10-10 | 2011-12-21 | 现代自动车株式会社 | Cylinder deactivation system for vehicle and variable valve lift system using the same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2003295A2 (en) * | 2006-03-31 | 2008-12-17 | NSK Ltd. | Cam follower device |
| CN104975904A (en) * | 2014-04-04 | 2015-10-14 | 上海汽车集团股份有限公司 | Chain transmission system |
| CN108223047B (en) * | 2017-06-09 | 2020-01-31 | 长城汽车股份有限公司 | Valve mechanism, engine and vehicle |
| JP7273085B2 (en) * | 2021-03-23 | 2023-05-12 | 本田技研工業株式会社 | Rocker arm, lubricating structure for internal combustion engine, and method for processing rocker arm |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5063889A (en) * | 1990-08-24 | 1991-11-12 | Henley Manufacturing Holding Company, Inc. | Rocker arm with lubrication provisions |
| JPH0861032A (en) * | 1994-08-23 | 1996-03-05 | Jidosha Buhin Kogyo Kk | Lubricating device for valve system |
| JP2000282825A (en) * | 1999-03-30 | 2000-10-10 | Suzuki Motor Corp | Lubrication structure of outboard engine |
| JP2001329823A (en) * | 2000-05-23 | 2001-11-30 | Fuji Heavy Ind Ltd | Valve system lubricating structure of ohc type engine and cover member for ohc type engine |
-
2003
- 2003-06-17 JP JP2003172274A patent/JP4318969B2/en not_active Expired - Fee Related
-
2004
- 2004-06-16 CN CNB2004100481313A patent/CN1312383C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161998B (en) * | 2006-10-10 | 2011-12-21 | 现代自动车株式会社 | Cylinder deactivation system for vehicle and variable valve lift system using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1312383C (en) | 2007-04-25 |
| JP2005009352A (en) | 2005-01-13 |
| JP4318969B2 (en) | 2009-08-26 |
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