CN1506566A - Internal combustion engine cylinder head - Google Patents
Internal combustion engine cylinder head Download PDFInfo
- Publication number
- CN1506566A CN1506566A CNA2003101205528A CN200310120552A CN1506566A CN 1506566 A CN1506566 A CN 1506566A CN A2003101205528 A CNA2003101205528 A CN A2003101205528A CN 200310120552 A CN200310120552 A CN 200310120552A CN 1506566 A CN1506566 A CN 1506566A
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- CN
- China
- Prior art keywords
- tappet
- air
- breathing
- cylinder head
- tube portion
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- Lubrication Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
To splash up oil on a lower end of a valve spring so as to supply the oil to a back side of a tappet and thereby to lubricate the tappet and a valve stem end part.In this cylinder head for internal combustion engine, a plug cylinder part to which an ignition plug is attached in the center is provided, a tappet cylinder part for supporting the tappet driven by a cam shaft is provided on an outside of the plug cylinder part, a valve guide support part is provided below the tappet cylinder part, and a valve stem is slidably held on a stem guide attached on the valve guide support part. A space is provided between the center side of the tappet cylinder part and the outside of the plug cylinder part, a wall part for connecting the tappet cylinder part and the plug cylinder part is provided so as to surround the space, and an oil gathering part using the valve guide support part as a bottom surface is provided on the space surrounded by the wall part.
Description
Technical field
The present invention relates to the cylinder head of internal-combustion engine, particularly relating to can be with the bottom of the valve spring of this cylinder head, thereby splashes the inboard that lubricant oil can be provided to lubricant oil tappet, lubricates the cylinder head for internal combustion engines of tappet and valve rod end with this.
Background technique
The structure of internal-combustion engine comprises: be installed to cylinder head on the cylinder block, on this cylinder head, be installed with spark plug spark plug tube portion, supporting by the tappet tube portion of the tappet of camshaft actuated and valve guide bushing supporting portion etc.
On the cylinder head of in the past internal-combustion engine, be equipped with the spark plug in the cylinder head that is formed on the DOHC engine spark-plug hole end face and by connecting by stiffening rib between the end face of tappet bore camshaft actuated, that tappet can pull and push therein sliding freely, temporarily have the lubricated required lubricant oil of tappet at the periphery that centers on by this stiffening rib.(for example with reference to patent documentation 1)
And, on cylinder head for internal combustion engines in the past, tappet accepting hole at cylinder head is embedded with guide, the boss of tappet accepting hole is connected by stiffening rib with the boss of spark-plug hole, on the axial direction of camshaft, the sidepiece of the boss of two adjacent tappet accepting holes is connected with the oil circuit sidewall by lash adjusting device.(for example with reference to patent documentation 2)
Patent documentation 1 is opened flat 4-109407 communique in fact, and (practicality is case logging request scope newly, Fig. 1)
Patent documentation 2 is opened flat 3-59452 communique in fact, and (practicality is case logging request scope newly, Fig. 1)
The cylinder head of internal-combustion engine such as Fig. 9, shown in Figure 10.202 is internal-combustion engines among the figure, the 204th, and cylinder block, the 206th, cylinder head, the 208th, cylinder, the 210th, piston, the 212nd, firing chamber, the 214th, suction port, the 216th, relief opening.This internal-combustion engine 202 is to be inclined to the axis C of several angle with vertical line V and to be installed to (car body is not represented among the figure) in the car body, and cylinder head 206 can heeling condition be installed on the cylinder block 204.
In each outside of the width direction W of spark plug tube portion 222, be provided with the inlet ram that support drives by admission cam shaft (not shown) and exhaust cam shaft (not shown) and the inlet ram tube portion 224 and the exhaust tappet tube portion 226 of exhaust tappet (all expressions among the figure).The upper outer of spark plug tube portion 222 is provided with inlet ram tube portion 224 among the figure, and the outside, below is provided with exhaust tappet tube portion 226.
Below air-breathing tappet tube portion 224 and exhaust tappet tube portion 226, be provided with at interval and the air-breathing valve guide bushing supporting portion 232 and the exhaust valve conduit support portion 234 that form air inlet cam chamber 228 and exhaust cam chamber 230.In air-breathing valve guide bushing supporting portion 232 and exhaust valve conduit support portion 234, intake guide 236 and exhaust manifolds 238 are installed.
The choke lever and the exhasut valve stem that on intake guide 236 and exhaust manifolds 238, are keeping admission air valve (not shown) and drain tap (not shown) slidably.Around intake guide 236 and the exhaust manifolds 238 the air-breathing valve spring do not expressed among the figure and the air-breathing spring seat seat surface 240 and the exhaust spring seat seat surface 242 of exhaust valve spring.
When the cylinder head 206 of this internal-combustion engine 202 is installed on the cylinder block 204 with heeling condition, because air-breathing tappet tube portion 224 is positioned at the top of inclining, for the air inlet cam of air inlet cam axle provides lubricated lubricant oil shown in arrow A among the figure, flow to air-breathing valve guide bushing supporting portion 232 along air-breathing sidewall 218.The lubricant oil that arrives herein and for example illustrates shown in the arrow B, avoid air-breathing spring seat seat surface 240, flow along the joint 244 that connects air-breathing valve guide bushing supporting portion 232 and exhaust valve conduit support portion 234, arrive the exhaust sidewall 220 that is connected with exhaust valve conduit support portion 234.
For this reason, the cylinder head 206 of this internal-combustion engine 202, owing to do not have lubricant oil on the air-breathing spring seat seat surface 240 of the lower end of air-breathing valve spring overlap joint, bottom in air-breathing valve spring can not splash lubricant oil, can not provide lubricant oil to arrive the inboard of air-breathing tappet tube portion and air-breathing tappet, therefore, lubricated, air-breathing tappet inboard between air-breathing tappet tube portion 224 and air-breathing tappet and lubricated can not effectively normally the carrying out between the choke lever end.
Summary of the invention
The present invention is in order to solve above-mentioned insufficient lubrication problem, be provided with the tube portion that spark plug is configured in central authorities, and be provided with the tappet tube portion that is supporting by the tappet of camshaft actuated in the outside of this one, the below of this tappet tube portion is disposing the valve guide bushing supporting portion, is keeping valve rod slidably on the conduit of installing on this valve guide bushing supporting portion (valve).In above-mentioned such cylinder head for internal combustion engines, between the outside of the central authorities of above-mentioned tappet tube portion and above-mentioned tube portion, be provided with space portion, be provided with the wall portion that connects tappet tube portion and tube portion with the form that surrounds this space portion, being provided with aforementioned valve guide bushing supporting portion in the aforesaid space portion that is surrounded by this wall portion is the oil groove of bottom surface.
The simple declaration of accompanying drawing
Fig. 1 represents the enlarged side view of the wall portion of first embodiment's cylinder head.
Fig. 2 is the II-II sectional drawing of Fig. 3.
Fig. 3 is the local amplification plan view of air-breathing tappet tube portion and spark plug tube portion.
Fig. 4 is the plan view of cylinder head.
Fig. 5 is the expansion sectional drawing of cylinder head.
Fig. 6 is the plan view of internal-combustion engine.
Fig. 7 is the local amplification profile of second embodiment's cylinder head.
Fig. 8 is the local amplification profile of the 3rd embodiment's cylinder head.
Fig. 9 represents the IX-IX sectional drawing of Figure 10 of example in the past.
Figure 10 represents the cylinder head amplification profile of example in the past.
The explanation of symbol
2 internal-combustion engines, 4 cylinder blocks, 6 cylinder heads, 22 firing chambers
24 air-breathing sidewalls, 26 exhaust sidewalls, 32 intakepories, 34 relief openings
36 spark plug tube portions, 38 air inlet cams bearing portion, 40 exhaust cams bearing portion
50 air inlet cam axles, 52 exhaust cam shafts, 58 air-breathing tappets, 60 exhaust tappets
78 air-breathing tappet tube portions, 80 exhaust tappet tube portions, 86 air-breathing valve guide bushing supporting portions
88 exhaust valve conduit support portions, 96 intake guides, 98 exhaust manifolds
100 Aspirating valvess, 102 outlet valves, 104 choke levers, 106 exhasut valve stems
124 air-breathing spring seat seat surfaces, 126 exhaust spring seat seat surfaces, 116 air-breathing baffle plates
118 exhaust screens, 132 air-breathing valve spring, 134 exhaust valve springs
136 space portions, 138 wall portions, 140 oil grooves
The embodiment of invention
The cylinder head for internal combustion engines of this invention, form with the space portion that forms between the central authorities that are enclosed in tappet tube portion and the outside of tube portion is provided with the wall portion that tappet tube portion is linked to each other with tube portion, forming with the valve guide bushing supporting portion at the space portion that is surrounded by this wall portion is the oil groove of bottom surface, thus, the bottom of valve spring can be immersed in the lubricant oil in the oil groove, by tappet by the valve spring of expanding-contracting action in when action elongation, can splash lubricant oil by the bottom of this valve spring.
Embodiment
Below, according to illustrating embodiments of the invention.Fig. 1～Fig. 6 expresses the first embodiment of the present invention.Among Fig. 6, the 2nd, internal-combustion engine, the 4th, cylinder block, the 6th, cylinder head, the 8th, cylinder-head cover, the 10th, oil is contained, and the 12nd, the chain lid.This internal-combustion engine 2 is installed to (car body is not represented among the figure) in the car body with the axis C that is inclined to several angle with vertical line V, and cylinder head 6 is installed on the cylinder block 4 with heeling condition thus.
As shown in Figure 5,14 contacts of the following surface of contact of the cylinder head 6 of internal-combustion engine 2 are installed on the cylinder block 4, and the last surface of contact 16 of cylinder head 6 is equipped with cylinder-head cover 8, form firing chamber 22 by the cylinder 18 of cylinder block 4 and piston 20 and cylinder head 6.
As shown in Figure 4, cylinder head 6 length directions of this internal-combustion engine 2 are L, and width direction is W, slightly is rectangle when overlooking.Be respectively equipped with air-breathing sidewall 24 and exhaust sidewall 26 in the both sides of width direction W.Be provided with intakeport 32 and relief opening 34 from air-breathing sidewall 24 and exhaust sidewall 26, they are communicated on the inlet 28 and outlet 30 that links to each other with firing chamber 22.
The central authorities of the width direction W of cylinder head 6 are provided with the spark plug tube portion 36 that installs the spark plug (not shown).On the length direction L of cylinder head 6, dispose a plurality of these spark plug tube portions.On the end face 20 of cylinder head 6, each outside of the width direction W of spark plug tube portion 36 is provided with respectively the air inlet cam that links to each other with exhaust sidewall 26 with air-breathing sidewall 24 with bearing portion 38 and exhaust cam usefulness bearing portion 40.Air inlet cam is used in the bearing portion 40 with bearing portion 38 and exhaust cam, with screw rod 48 air inlet cam cap 42 and exhaust cam cap 44 are installed with screw rod 46 and exhaust cam by air inlet cam, and axle is supporting air inlet cam axle 50 and exhaust cam shaft 52.Be respectively equipped with air inlet cam 54 and exhaust cam 56 on air inlet cam axle 50 and the exhaust cam shaft 52.
The both sides of the width direction W of the spark plug tube portion 36 of cylinder head 6 dispose the air-breathing tappet tube portion 78 and the exhaust tappet tube portion 80 that are supporting air-breathing tappet 58 and exhaust tappet 60 slidably respectively.In the present embodiment, as shown in Figure 4, the outside above spark plug tube portion 36 clips air inlet cam and is connected on length direction L with the air-breathing tappet tube of two of bearing portion 38 portion 78.Below the outside clip exhaust cam and two exhaust tappet tube portions 80 be connected on length direction L with bearing portion 40.Two air-breathing tappet tube portions 78 clip air inlet cam with bearing portion 38, will be connected with air-breathing sidewall 24 by air-breathing side rib 79 in the upper end in each outside of length direction L.Two exhaust tappet tube portions 80 clip exhaust cam with bearing portion 40, will be connected with exhaust sidewall 26 by exhaust side rib 81 in the respectively upper end in the outside of length direction L.In each air-breathing tappet tube portion 78 and exhaust tappet tube portion 80 of 2, supporting the air-breathing tappet 58 and the exhaust tappet 60 that can slide respectively.
Below air-breathing tappet tube portion 78 and exhaust tappet tube portion 80, be provided with at interval and the air-breathing valve guide bushing supporting portion 86 and the exhaust valve conduit support portion 88 that form air inlet cam chamber 82 and exhaust cam chamber 84.Air-breathing valve guide bushing supporting portion 86 is connected by joint 90 with exhaust valve conduit support portion 88.Air-breathing valve guide bushing supporting portion 86 is provided with the intake guide mounting hole 92 that leads to intakeport 32 and air inlet cam chamber 82; Exhaust valve conduit support portion 88 is provided with the exhaust manifolds mounting hole 94 that leads to relief opening 34 and exhaust cam chamber 84.Be equipped with intake guide 96 and exhaust manifolds 98 on intake guide mounting hole 92 and the exhaust manifolds mounting hole 94.
On intake guide 96 and the exhaust manifolds 98, keeping the choke lever 104 of Aspirating valves 100 and the exhasut valve stem 106 of outlet valve 102 slidably.On Aspirating valves 100 and outlet valve 102, dispose air-breathing valve head 108 and exhaust valve head 110 that the outlet 30 of the inlet 28 that makes intakeport 32 and relief opening 34 opens and closes respectively.
Aspirating valves 100 overlaps with choke lever end 112 and exhasut valve stem end 114 at the air-breathing upper wall 64 of air-breathing tappet 58 and exhaust upper wall 72 places of exhaust tappet 60 mutually with outlet valve 102, near choke lever end 112 and the exhasut valve stem end 114, dispose air-breathing baffle plate 116 and exhaust screen 118, air-breathing oil sealing 120 and the exhaust oil sealing 122 installed by intake guide 96 adjacent with air inlet cam chamber 82 and exhaust cam chamber 84 and exhaust manifolds 98 places are sealing choke lever 104 and exhasut valve stem 106.
In air-breathing valve guide bushing supporting portion 86 and the exhaust valve conduit support part 88, around intake guide 96 and exhaust manifolds 98, dispose air-breathing spring seat seat surface 124 and exhaust spring seat seat surface 126.On air-breathing spring seat seat surface 124 and exhaust spring seat seat surface 126, air-breathing spring seat 128 and exhaust spring seat 130 are installed.
Between air-breathing baffle plate 116, exhaust screen 118 and air-breathing spring seat 128, exhaust spring seat 130, Aspirating valves 100 and outlet valve 102 are separately installed with air-breathing valve spring 132 and exhaust valve spring 134.This air-breathing valve spring 132 and exhaust valve spring 134 are at outlet 30 places of the inlet 28 and the relief opening 34 of intakeport 32, make air-breathing valve head 108 and exhaust valve head 110 respectively to will enter the mouth 28 and outlet 30 directions of closing carry out by signature, simultaneously be applied in power towards the direction that promotes air-breathing tappets 58 and exhaust tappet 60 to air inlet cam 54 and exhaust cam 56.
As Fig. 5, shown in Figure 6, the cylinder head 6 of this internal-combustion engine 2 is installed on the cylinder block 4 in the mode that tilts, and air-breathing tappet tube portion 78 is positioned at oblique upper, and exhaust tappet tube portion 80 is positioned at oblique below.This cylinder head 6 in the outside of the oblique upper of spark plug tube portion 36, has air inlet cam to link with the air-breathing tappet tube of two of bearing portion 38 portion 78 centre as shown in Figure 3, Figure 4.The outside below tiltedly has exhaust cam to be connected with two exhaust tappet tube portions 80 of bearing portion 40 centre.
On the cylinder head 6, in the middle of disposing between the upper outer of the width direction W of the center side of the width direction W of the air-breathing tappet tube of two of oblique upper portion 78 and spark plug tube portion 36 is two space portions 136 of air inlet cam with bearing portion 38, and be provided with the wall portions 138 that connect air-breathing tappet tube portion 80 and spark plug tube portion 36 around two of this space portion 136, in the space portion 136 that is centered on by this wall portion 138, being provided with air-breathing valve guide bushing supporting portion 86 is the oil groove 140 of bottom surface.In the air-breathing tappet tube portion 78, be provided with a sidepiece of above-mentioned wall portion 138 greatly about the central part of width direction W, the other side of above-mentioned wall portion 138 is connected with spark plug tube portion 36 and forms.Near a sidepiece of this wall portion 138, with about central part of air-breathing tappet tube portion 78 and tiltedly the above-mentioned air-breathing rib 79 that is connected of the air-breathing sidewall 24 of the cylinder head 6 of upside form continuously from wall portion 138.This air-breathing rib 79 is that the upper end with the air-breathing sidewall 24 of cylinder head 6 begins to be the general triangular on base (side-looking) to the central part upper end of air-breathing tappet tube portion 78.On direction W two air-breathing tappet tube portions 78 arranged side by side by the air-breathing sidewall 24 of cylinder head 6 and air-breathing rib 79 and wall portion 138 and spark plug tube portion 36 around and form.
Above-mentioned as depicted in figs. 1 and 2 wall portion 138 is provided with notch on the position of the height and position of the air-breathing oil sealing 120 of corresponding choke lever 104, upper surface 138a is along the upper surface 78a of air-breathing tappet tube portion 78 and be formed, when cylinder head 6 was installed on the cylinder block 4 with heeling condition, tiltedly the air-breathing tappet tube portion 78 of upside was connected with spark plug tube portion 36.Specifically, the upper end of the upper end of a sidepiece of wall portion 138 and air-breathing tappet tube portion 78 approximately is in sustained height, extends upward and forms circular-arcly along with moving the upper end in its other side, is connected at the place slightly down with the upper end of spark plug tube portion 36.Be soaked with lubricant oil as the bosom around the spark plug tube portion 36.
The following describes its effect.
The cylinder head 6 of internal-combustion engine 2 is installed on the cylinder block 4 with heeling condition, as shown in Figure 2, be arranged in that the air inlet cam 54 of air inlet cam axle 50 of oblique upper is lubricated to be flowed down along wall portion by direction shown in figure arrow A, the B with the lubricant oil that bearing portion 38 flows down along air-breathing rib 79, air inlet cam, as shown in Figure 1, the air-breathing spring seat seat surface 124 that arrives with air-breathing valve guide bushing supporting portion 86 is the oil groove of bottom surface.
Because the existence of above-mentioned oil groove 140, the bottom of the air-breathing spring of installing on the air-breathing spring seat seat surface 124 132 that joins with air-breathing spring seat 128 can be soaked in lubricant oil, the air-breathing valve spring 132 that is driven by air-breathing tappet 58 of knee-action is when the elongation action in air-breathing tappet tube portion 78, and the bottom of the air-breathing valve spring 132 of being moved by this elongation can splash the oil in the oil groove.
Therefore, said cylinder 6 can splash lubricant oil the inboard in interior week of air-breathing perisporium 62 of periphery, the air-breathing tappet 58 of the air-breathing perisporium 62 of air-breathing tappet 58 with air-breathing valve spring 132 bottoms, reaches lubricated purpose.Simultaneously, lubricated everywhere following, the air-breathing upper wall 64 and the choke lever end 112 of the air-breathing perisporium 62 of air-breathing tappet tube portion 78, air-breathing tappet 58, the inboard of air-breathing tappet 58.
In this cylinder head 6, with dispose notch 142 in the wall portion 138 at the corresponding position of height and position of the air-breathing oil sealing 120 of choke lever 104, liquid level with lubricant oil in the oil groove 140 maintains below the height of air-breathing oil sealing 120 thus, effectively prevented air-breathing oil sealing 120 lubricated oil immersion profits, also can prevent to splash down simultaneously to the lubricant oil of intakeport 32.
In addition, wall portion 138,138a forms along the upper surface 78a of air-breathing tappet tube portion 78 above the wall portion, the height of the wall portion 138 of oil groove 140 can be kept very highly thus, and the replacing of air-breathing Shim 68 is become easily, has improved maintainability.
Furthermore, when cylinder head 6 is installed on the cylinder block 4 with heeling condition when, wall portion 138 is connected the air-breathing tappet tube portion 78 and the spark plug tube portion 36 of oblique upside, improved the efficient in the grease that air inlet cam 54 is lubricated, can carry out simultaneously the lubricated of choke lever end 112, improve the rigidity of support of air-breathing tappet tube portion 78.
Fig. 7 expresses the second embodiment of the present invention.In this routine cylinder head 6, be provided with between the air-breathing baffle plate 116 of Aspirating valves 100 and the air-breathing spring seat 128 of cylinder head 6 and possess the air-breathing valve spring 132 that the transverse section is flat planar surface portion 144.
In second embodiment's the cylinder head 6, because the section of air-breathing valve spring 132 is a planar, the planar surface portion 144 of the bottom of the air-breathing valve spring 132 when utilizing the elongation action can limits be being ladled out the limit and is being splash lubricant oil in the oil groove 140, improves greasy property.
Fig. 8 expresses the 3rd embodiment of this invention.In this routine cylinder head 6, when the air-breathing tappet 58 in the air-breathing tappet tube portion 78 dropped to extreme lower position, the lower edge of the air-breathing perisporium 62 of air-breathing tappet 58 was soaked in the oil groove 140, formed the kitchen apron portion 146 that lubricant oil is splash.
In the 3rd embodiment's the cylinder head 6, form the kitchen apron portion 146 that lubricant oil is splash owing to be dipped into the lower edge of the air-breathing perisporium 62 of the air-breathing tappet 58 in the oil groove 140, so the bottom of the air-breathing valve spring 132 when utilizing the elongation action can splash the lubricant oil of oil groove 140, and the action of the kitchen apron portion 146 of the air-breathing tappet 58 that is risen because the elongation of air-breathing valve spring 132 is moved also can splash the lubricant oil in the oil groove 140, and the amount of splashing increases, greasy property is improved thereby make.
The effect of invention
Cylinder head for internal combustion engines of the present invention can infiltrate the bottom of valve spring the profit in oil groove In the lubricating oil, utilize tappet by the valve spring of expanding-contracting action in when action elongation, moving by this elongation The bottom of the valve spring of doing can splash lubricating oil.
Therefore, the cylinder head of this internal-combustion engine can be splash lubricant oil by the bottom of valve spring, thereby can provide lubricant oil for tappet and tappet inboard, can carry out the lubricated of tappet tube portion and tappet and tappet is inboard and valve rod end lubricated.
Claims (4)
1. the cylinder head of an internal-combustion engine, it is characterized by: be provided with the tube portion that spark plug is installed in central authorities, and be provided with the tappet tube portion that is supporting by the tappet of camshaft actuated in the outside of this one, below this tappet tube portion, be provided with the valve guide bushing supporting portion, on the conduit of installing on this valve guide bushing supporting portion, keeping valve rod slidably, in such cylinder head for internal combustion engines, between the outside of the central authorities of above-mentioned tappet tube portion and above-mentioned tube portion, be provided with space portion, be provided with the wall portion that connects tappet tube portion and tube portion with the form that surrounds this space portion, in the above-mentioned space portion that is surrounded by this wall portion, being provided with above-mentioned valve guide bushing supporting portion is the oil groove of bottom surface.
2. the cylinder head of internal-combustion engine as claimed in claim 1 is characterized by: above-mentioned wall portion, with the corresponding position of the oil sealing of above-mentioned valve rod, be provided with notch.
3. the cylinder head of internal-combustion engine as claimed in claim 1 is characterized by: above-mentioned wall portion is formed above above-mentioned tappet tube portion.
4. the cylinder head of internal-combustion engine as claimed in claim 1 is characterized by: above-mentioned wall portion when the said cylinder head is installed on the cylinder block with heeling condition, is connected the tappet tube portion of oblique upside with above-mentioned tube portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002362268A JP2004190627A (en) | 2002-12-13 | 2002-12-13 | Cylinder head for internal combustion engine |
| JP362268/2002 | 2002-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1506566A true CN1506566A (en) | 2004-06-23 |
| CN100472053C CN100472053C (en) | 2009-03-25 |
Family
ID=32760766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101205528A Expired - Fee Related CN100472053C (en) | 2002-12-13 | 2003-12-12 | Internal combustion engine cylinder head |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004190627A (en) |
| CN (1) | CN100472053C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287861A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5339524B2 (en) * | 2009-06-25 | 2013-11-13 | ダイハツ工業株式会社 | Internal combustion engine |
| CN103671083A (en) * | 2012-09-26 | 2014-03-26 | 重庆长安汽车股份有限公司 | High-pressure oil pump lubricating oil-way structure of direct injection engine |
-
2002
- 2002-12-13 JP JP2002362268A patent/JP2004190627A/en active Pending
-
2003
- 2003-12-12 CN CNB2003101205528A patent/CN100472053C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287861A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| CN111287861B (en) * | 2020-05-13 | 2020-09-29 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004190627A (en) | 2004-07-08 |
| CN100472053C (en) | 2009-03-25 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090325 Termination date: 20171212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |