CN102562216B - Lubricating oil supplying structure of cylinder cover - Google Patents
Lubricating oil supplying structure of cylinder cover Download PDFInfo
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- CN102562216B CN102562216B CN201110390661.6A CN201110390661A CN102562216B CN 102562216 B CN102562216 B CN 102562216B CN 201110390661 A CN201110390661 A CN 201110390661A CN 102562216 B CN102562216 B CN 102562216B
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- cylinder head
- timing chain
- lubricating oil
- chain
- supplying structure
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- Lubrication Of Internal Combustion Engines (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention provides a lubricating oil supplying structure of a cylinder cover. A timing chain (16) adjacent to the outside of an end wall part (10) and winding on a chain wheel is installed on a generator. Engine oil in the cylinder cover (6) of the generator is provided as lubricating oil to a lubricating oil supplying position (P) of the timing chain (16). The end wall part (10) is provided with a cut (26) formed by cutting an upper edge. The cut (26) takes a part corresponding to the lubricating oil supplying position (P) as the lowest portion (26a). Thus, the lubricating oil can be supplied to the timing chain abundantly.
Description
Technical field
The present invention relates to the lubricating oil supplying structure of the cylinder head of lubrication timing chain (timing chart).
Background technique
In the cylinder head of motor (internal combustion office), possesses the valve system driving Aspirating valves and outlet valve.This valve system is to be consisted of the mode of timing chain and crankshaft-synchronous action.This timing chain hangs over the crank and chain-wheel that is combined with one end of bent axle and on camshaft or the cam sprocket wheel (sprocket) that is combined with one end of the axle of camshaft interlock.
In most of motor, in conjunction with cam sprocket wheel camshaft etc. by support equipment in the bent axle at cylinder head to two ends the end wall upper limb that erects.Such as, as described in Patent Document 1, the top of the end wall at the axial two ends of cylinder head is provided with camshaft bearing portion, makes camshaft support in these camshaft bearing portion.On the top of cylinder head, be formed by the end wall at axial two ends and the both sides wall portion that extends in the axial direction around the space of concavity, in this concavity space, be equipped with valve mechanism.
But, due to when engine running timing chain often and bent axle together rotate, therefore often produce sliding friction.In order to reduce friction, suppress abrasion, need to supply lubricant oil fully.Timing chain declines by rotating and enters the below of cylinder block, and the machine oil therefore dispersed on the top of food tray is attached to timing chain, thus it is by the sliding contacting part be supplied to as lubricant oil between chain guide.But the lubricant oil of this supply rises because timing chain rotates and causes dispersing, and worries to enter lubricant oil the stage of below at timing chain near cylinder head not enough.If lubricant oil is not enough, then worry that the sliding contacting part between timing chain and the chain guide be in contact with it causes friction to increase, and abrasion increase.
In patent documentation 1, be conceived to this problem and propose following structure: the cylinder head by being equipped with valve mechanism upper space and be equipped with timing chain cylinder head end outside carry out in the end wall of the cylinder head divided, arrange chain to fall hole for application oil droplet, this chain points to the direct of travel of above-mentioned timing chain in the inner side of timing chain for the application oil droplet hole that falls and oil is supplied to timing chain.
[at first technical paper]
[patent documentation]
Patent documentation 1:JP-A-8-135427
But, as the technology of patent documentation 1, the end wall of cylinder head is provided with chain and falls in the structure in hole for application oil droplet, can not supplying lubricating oil fully.Especially, when high engine speeds rotates, still cause lubricant oil not enough in the stage that timing chain advances downwards.Therefore, cause due to the sliding contacting part between timing chain and the chain guide be in contact with it friction to increase, thus fully cannot suppress abrasion.
Summary of the invention
The present invention creates in view of the above problems, its object is to provide a kind of and lubricant oil can be supplied to timing chain galore and can suppress the lubricating oil supplying structure of the cylinder head of friction between timing chain and chain guide and abrasion fully.
According to the present invention, provide the lubricating oil supplying structure of cylinder head, it is equipped with the outside of the end wall of the cylinder head being adjacent to motor and is wound in the timing chain of sprocket wheel, machine oil in described cylinder head is supplied to the lubricant oil supply position of described timing chain as lubricant oil, in the lubricating oil supplying structure of described cylinder head, described end wall has is cut described end wall by the upper limb of the above-below direction from vehicle and the otch formed, and the foot of the described above-below direction of described otch is in supplies position corresponding position with described lubricant oil.
Further, so-called otch refers to the position lacked with concavity or wedge-like cutting, is set to position end wall being cut into concavity from upper limb here.Preferred described cylinder head has to decline gradually towards described foot and the oil guiding plane of inclination formed with described otch continuous print mode.The side that the described timing chain that the surrounding that the described foot of preferred described cylinder head is in described sprocket wheel rotates declines on described above-below direction.
The lubricating oil supplying structure of preferred described cylinder head comprises: be configured in described sprocket wheel below and to the chain guide that guides of described timing chain declined, the described lubricant oil supply position of described timing chain be set at engaging between described timing chain with described sprocket wheel just terminate after position.
(invention effect)
According to the lubricating oil supplying structure of cylinder head of the present invention, because the otch being formed at end wall is unlike the hole of through end wall, flow path cross sectional area is restricted, therefore, it is possible to machine oil is supplied to timing chain galore.In addition, compared with the hole of through end wall, the easy processing of countercylinder lid, also can reduce processing itself.When possessing the oil guiding plane of inclination being formed at cylinder head, due to by the machine oil in cylinder head to be formed at cylinder head end wall otch foot guide, and this machine oil is provided to the timing chain of the outside being adjacent to end wall from the foot of otch, therefore, it is possible to machine oil is supplied to timing chain as lubricant oil.Therefore, it is possible to reduce the friction associated with timing chain, and the abrasion of timing chain and chain guide can be suppressed fully.
When be equipped with the below that is configured in sprocket wheel for the timing chain declined is guided chain guide, the position after if the lubricant oil supply position engagement be set between timing chain and sprocket of timing chain just terminates, then machine oil can be supplied to galore the sliding contact part between timing chain and chain guide, and the reduction of the friction associated with timing chain can be promoted further, the abrasion between timing chain and chain guide suppress.
Accompanying drawing explanation
Figure 1A and Figure 1B is the front view of the end wall of the cylinder head of the lubricating oil supplying structure that the cylinder head that one embodiment of the present invention relates to is shown, Figure 1A is the common front view recording sprocket wheel, and Figure 1B is the front view illustrated after being removed by sprocket wheel.
Fig. 2 is the front view of the end wall of the motor of the lubricating oil supplying structure that the cylinder head that one embodiment of the present invention relates to is shown.
Fig. 3 is the plan view of the major component of the cylinder head of the lubricating oil supplying structure that the cylinder head that one embodiment of the present invention relates to is shown, it is equivalent to the A arrow view of Figure 1A.
Embodiment
Below, one embodiment of the present invention is described.Figure 1A ~ Fig. 3 is the figure of the lubricating oil supplying structure of the cylinder head related to for illustration of one embodiment of the present invention, is described based on these figure.As shown in Figure 2, motor 2 of the present embodiment is configured to the food tray 8 that comprises cylinder block 4, the cylinder head 6 be combined with the top of cylinder block 4 and be combined with the bottom of cylinder block 4.Top in cylinder block 4 is provided as and is formed with multiple not shown cylinder side by side, and not shown piston moves back and forth in each cylinder according to the stroke of cylinder.Bottom in cylinder block 4, not shown bent axle is connected to the not shown piston rod of above-mentioned piston and equips, and it rotates according to the to-and-fro motion of piston.
Further, in the recess 24 (with reference to Fig. 1) of the upper opening of cylinder head 6, the not shown camshaft of not shown valve mechanism and crankshaft rotating axis parallel ground assemble.Above cylinder head 6, in the mode covering recess, not shown rocker cover (rocker cover) is installed.Further, each slide part of the valve mechanism in recess 24, machine oil is supplied as lubricant oil, and a part for this machine oil drops to the bottom in recess 24.
In the wall portion (end wall) 10 of the end side of motor 2, the axle head of this bent axle and the axle head of camshaft are given prominence to, and on the axle head of each axle, are equipped with sprocket wheel 12,14 respectively, and timing chain 16 hangs on two sprocket wheels 12,14.Thus, as the crankshaft rotates, sprocket wheel 12,14 and timing chain 16 rotate linkedly, and camshaft rotates as shown by arrows in FIG. in the timing with crankshaft-synchronous.But sprocket wheel 14 has the number of teeth of the twice of sprocket wheel 12, when crankshaft rotating two is enclosed, camshaft revolves and turns around.Crankshaft rotating two circle is equivalent to a service cycle, and camshaft revolves to turn around and is equivalent to a service cycle.
Between the sprocket wheel 12,14 be separated up and down, be equipped with the chain guide 18,20 guided on the track of regulation by timing chain 16.In timing chain 16, the rising part between sprocket wheel 12,14 and sloping portion are heaved to the direction be separated from each other due to centrifugal force.Chain guide 18,20 guide surface 18a, 20a of being bent to form in order to suppress above-mentioned heaving to have smooth convex, thus between two sprocket wheels 12,14, the rising part of timing chain 16 and sloping portion are guided on track close to each other.Thus, timing chain 16 can rotate on the track of regulation, and also can guarantee the length of action between sprocket wheel 12,14.
On the other hand, chain guide 18 is one end 18b by rotatably pivotal support in the movable guide of the end wall 10 of cylinder block 4.The chain tensioning device 22 that the other end 18c of chain guide 18 is installed in the end wall 10 of cylinder block 4 presses, and by the thrust of chain tensioning device 22, guide surface 18a contacts with timing chain 16 pressure.Thus, timing chain 16 is retained as tension state by the thrust of chain tensioning device 22.
Chain guide 20 is the fixed guide of the end wall 10 being fixed in cylinder block 4 in multiple position, and chain guide 20 does not rotate.In the end wall 10 of cylinder block 4, in the mode covering sprocket wheel 12,14 and timing chain 16, not shown chain cover is installed.By end wall 10 and chain cover around the space containing timing chain 16 grade be communicated with the machine oil containing space in the food tray 8 of below.The part of machine oil of dispersing in food tray 8 with the rotation of bent axle is attached to the position being wound in sprocket wheel 12 of sprocket wheel 12 near food tray 8 and timing chain 16.
Therefore, when rising to sprocket wheel 14 in the position being wound in sprocket wheel 12 of timing chain 16, be attached to the sliding contact part of machine oil between timing chain 16 and the guide surface 18a of chain guide 18 of timing chain 16, play function as lubricant oil, to suppress friction and the abrasion of this sliding contact part.But, rotation track bottom near sprocket wheel 12, even if be attached with sufficient machine oil on timing chain 16, in the process that the machine oil of this attachment rises at timing chain 16, not only be supplied to above-mentioned sliding contact part, but also disperse along with the rotation of timing chain 16, therefore rise in the stage on the rotation track top arrived near sprocket wheel 14 at timing chain 16, machine oil is not enough.The lack of lubrication of the sliding contact part between the guide surface 20a of particularly timing chain 16 and chain guide 20.
Therefore, on cylinder head 6, be provided with this lubricating oil supplying structure at the lubricant oil supply position machine oil in cylinder head 6 being supplied to timing chain 16 as lubricant oil.As shown in Figure 1, Figure 3, on cylinder head 6, be formed with the recess 24 of upper opening.This recess 24 by using on cylinder head 6 along the face 6a that general horizontal direction extends to form as bottom surface, and surrounded by sidewall 6b, 6b of the cylinder head 6 formed vertically and the two ends wall portion 10 of the cylinder head 6 that is formed at axial end portion and formed.In the end wall 10 being equipped with chain guide 20 side, be formed and from upper limb, end wall 10 cut and the otch 26 formed.
This otch 26 forms foot 26a as Vertical direction using supplying corresponding position, position with lubricant oil.In addition, on the face 6a of cylinder head 6, be formed with to decline gradually towards foot 26a and the oil guiding plane of inclination 28 formed with otch 26 continuous print mode.So-called lubricant oil supply position be timing chain 16 decline simultaneously with the position P after just terminating that engages of sprocket wheel 14.In other words, so-called lubricant oil supply position be after timing chain 16 leaves from sprocket wheel 14 namely to position.Guide timing chain 16 chain guide 20 this lubricant oil supply position P immediately below with timing chain sliding contact.And, it is so-called that supply the corresponding position of position P with lubricant oil be following position: the machine oil of the face 6a bottom the recess 24 dropping to cylinder head 6 guided by oily guiding plane of inclination 28 and pilot notched 26 thus run down into the outside of end wall 10 time, oily flowing supplies position P towards lubricant oil as shown by arrow F.
And, lubricant oil supply position P owing to being positioned at timing chain 16 and declining from sprocket wheel 14 leave namely to position, therefore compared with immediately below the camshaft being namely positioned at the width direction substantial middle of recess 24 with the running shaft at sprocket wheel 14, closer to amesiality (keeping right in Fig. 1).Therefore, oily guiding plane of inclination 28 mainly declines to from the opposite side of recess 24 (Fig. 1 left side) to the side of recess 24, declines to towards the end side (being provided with the side of sprocket wheel 14) of recess 24 from another side simultaneously.
In addition, in the part of the foot 26a close to otch 26 of this oily guiding plane of inclination 28, be formed with the oil groove 28a of the roughly spherical shape after a part for plane plane of inclination 28 being eliminated, thus position P can be supplied from the foot 26a of otch 26 to lubricant oil and stably supply machine oil.Further, in the part of otch 26, projecting have paired bearing installation base portion 30, and this bearing installation base portion 30 is for installing the bearing part 32 supported by the shaft end axle of the camshaft 34 of fixed chain wheels 14.
The lubricating oil supplying structure of the cylinder head that one embodiment of the present invention relates to is due to such as above-mentioned formation, and the foot 26a of otch 26 of the machine oil in the recess 24 of cylinder head 6 to the end wall 10 being formed at cylinder head 6 guides by the oil guiding plane of inclination 28 being therefore formed at cylinder head 6.Further, this machine oil is supplied to the timing chain 16 of the outside being adjacent to end wall 10 by the foot 26a from otch 26.
Therefore, be added before proceeding to the sliding contacting part of the timing chain 16 and chain guide 20 needed subsequently at the machine oil of the top deficiency of the moving track of timing chain 16, machine oil can be supplied to this sliding contacting part as lubricant oil.Especially owing to being formed at otch 26 limiting flowing path sectional area unlike the hole of through end wall 10 of end wall 10, therefore, it is possible to machine oil is supplied to timing chain 16 galore.Thereby, it is possible to realize the reduction of the friction relevant with timing chain 16 and suppress the abrasion of timing chain 16 and chain guide 20 fully.
Further, need to make the machine oil in recess 24 run down into food tray 8 by arbitrary route, when the machine oil of abundance is supplied to the valve mechanism in recess 24, the route guaranteeing to make the machine oil of supply to run down into food tray 8 also becomes a problem.In structure of the present invention, defining the larger route running down into food tray 8, is also therefore effective for this point.Further, not only ensuring and flow down route, machine oil can also be effectively utilized the lubrication in timing chain 16 grade when flowing down.
And, if the lubricant oil supply position P of timing chain 16 is timing chains 16 start to decline and from sprocket wheel 14 leave namely to position, i.e. timing chain 16 and chain guide 20 sliding contact before position, then machine oil can be supplied to galore the sliding contact part between timing chain 16 and chain guide 20.Thereby, it is possible to promote the suppression of the reduction of friction and the abrasion of timing chain 16 and chain guide 20 associated with timing chain 16 further.
Further, if supply is oily when timing chain 16 upward direction rotates, then facilitate oil atomization, and the oil being attached to timing chain 16 easily disperses, produce taking out of of so-called oil, cause the retentivity of oil to worsen.In this structure, oil is supplied to the timing chain 16 in decline, the movement direction of timing chain 16 and oil fall direction due to deadweight consistent, and therefore can suppress oil atomization, it easily can keep the oil being attached to timing chain 16.
Above, describe embodiments of the present invention, but the present invention is not limited in above-mentioned mode of execution, without departing from the scope of spirit of the present invention, be used after a part for this mode of execution can being out of shape or also only can utilize the part of this mode of execution.Such as, the shape of the otch 26 shown in specific Figure 1B and the shape of oil guiding plane of inclination 28 is not had.There is no the shape of specific oil groove 28a, and can consider to omit this oil groove 28a yet yet.
Symbol description
2 motor 4 cylinder blocks
6 cylinder head 8 food trays
10 wall portion (end wall) 12,14 sprocket wheel
16 timing chain 18,20 chain guides
22 chain tensioning device 24 recesses
26 otch 26a foots
28 oil guiding plane of inclination 28a oil grooves
P lubricant oil supply position
Claims (4)
1. the lubricating oil supplying structure of a cylinder head, it is the lubricating oil supplying structure of the cylinder head of motor, in the lubricating oil supplying structure of described cylinder head, be equipped with the outside of the end wall being adjacent to described cylinder head and be wound in the timing chain of sprocket wheel, possess and be configured in described sprocket wheel (12, 14) below and guide the chain guide (18 of described timing chain (16) declined, 20), machine oil in described cylinder head is supplied to the lubricant oil supply position of described timing chain by the lubricating oil supplying structure of described cylinder head as lubricant oil, the feature of the lubricating oil supplying structure of described cylinder head is,
Described end wall has is cut described end wall by the upper limb of the above-below direction from vehicle and the otch formed,
The foot of the described above-below direction of described otch is in supplies position corresponding position with described lubricant oil,
Position after the described foot engagement be set between described timing chain (16) with described sprocket wheel (12,14) of described otch just terminates and be set in directly over described timing chain (16) contacts with described chain guide (18,20)
Guide the described chain guide of described timing chain immediately below described lubricant oil supply position with described timing chain sliding contact.
2. the lubricating oil supplying structure of cylinder head according to claim 1, is characterized in that,
Described cylinder head has to decline gradually towards described foot and the oil guiding plane of inclination formed with described otch continuous print mode.
3. the lubricating oil supplying structure of cylinder head according to claim 2, is characterized in that,
In the part of the foot close to otch (26) (26a) of described oily guiding plane of inclination (28), be formed with the oil groove (28a) after the part of plane of inclination (28) being eliminated.
4. the lubricating oil supplying structure of cylinder head according to claim 1, is characterized in that,
The side that the described timing chain that the surrounding that the described foot of described cylinder head is in described sprocket wheel rotates declines on described above-below direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-290035 | 2010-12-27 | ||
| JP2010290035A JP5408122B2 (en) | 2010-12-27 | 2010-12-27 | Lubricating oil supply structure for cylinder head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102562216A CN102562216A (en) | 2012-07-11 |
| CN102562216B true CN102562216B (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110390661.6A Active CN102562216B (en) | 2010-12-27 | 2011-11-30 | Lubricating oil supplying structure of cylinder cover |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5408122B2 (en) |
| CN (1) | CN102562216B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5892992B2 (en) * | 2013-11-08 | 2016-03-23 | 本田技研工業株式会社 | Oil path structure of dry sump engine and oil path structure of V type dry sump engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742147Y (en) * | 2004-11-23 | 2005-11-23 | 三阳工业股份有限公司 | Lubricating structure for cam chain guide sheet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62284913A (en) * | 1986-06-03 | 1987-12-10 | Yamaha Motor Co Ltd | Lubrication structure for cam sprocket for internal combustion engine |
| JPH08135427A (en) * | 1994-11-04 | 1996-05-28 | Suzuki Motor Corp | Lubricating structure of timing chain |
| JP2008045417A (en) * | 2006-08-10 | 2008-02-28 | Aichi Mach Ind Co Ltd | Cylinder head and internal combustion engine having this cylinder head |
| JP2009236149A (en) * | 2008-03-26 | 2009-10-15 | Honda Motor Co Ltd | Chain transmission device with lubricating structure |
-
2010
- 2010-12-27 JP JP2010290035A patent/JP5408122B2/en active Active
-
2011
- 2011-11-30 CN CN201110390661.6A patent/CN102562216B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742147Y (en) * | 2004-11-23 | 2005-11-23 | 三阳工业股份有限公司 | Lubricating structure for cam chain guide sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012137026A (en) | 2012-07-19 |
| JP5408122B2 (en) | 2014-02-05 |
| CN102562216A (en) | 2012-07-11 |
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Address after: Tokyo Port Area, Japan Patentee after: Mitsubishi Jidosha Kogyo Kabushiki Kaisha Address before: Tokyo, Japan Patentee before: Mitsubishi Jidosha Kogyo Kabushiki Kaisha |