CN101413408A - Valve rocker apparatus of internal combustion engine - Google Patents
Valve rocker apparatus of internal combustion engine Download PDFInfo
- Publication number
- CN101413408A CN101413408A CNA2008102360186A CN200810236018A CN101413408A CN 101413408 A CN101413408 A CN 101413408A CN A2008102360186 A CNA2008102360186 A CN A2008102360186A CN 200810236018 A CN200810236018 A CN 200810236018A CN 101413408 A CN101413408 A CN 101413408A
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- China
- Prior art keywords
- pitman arm
- arm shaft
- rocker
- bearing
- combustion engine
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Abstract
The invention relates to a valve rocker device for an internal-combustion engine. The device comprises rocker shafts, an intake rocker, an exhaust rocker and a rocker shaft support, and is characterized in that two rocker shafts are provided and are arranged on the rocker shaft support in axial symmetry. The intake rocker has fork structure and has semi-circle transition in the middle of a cross part. The rocker shaft connecting support is provided with two rocker shaft fixing bolt holes. The circumference of a camshaft hole of the rocker shaft connecting support is provided with an intermediate oil groove. Each rocker shaft fixing bolt hole is communicated with the intermediate oil groove through an oil hole on the rocker shaft support. Due to greatly reduced length, the rocker shafts are convenient to process; internal lubrication of the rocker shafts is uniform, the lubrication quality is ensured; the lubrication performance of the rocker part is improved, and installation of the rocker part is convenient; and an oil sprayer can be detached and a pad can be replaced and adjusted without detaching the rocker device, and the test period of a sample machine is reduced.
Description
Technical field
The present invention relates to a kind of valve rocker apparatus of internal combustion engine, belong to technical field of internal combustion engines.
Background technique
In prior art, adopt the engine valve pitman arm shaft of integral cylinder head structure to be generally a major axis, when engine cylinder number is six cylinders when above, it is very long that pitman arm shaft will become.Need be installed into exhaust rocker arm on the pitman arm shaft, the mixing ratio between intake and exhaust rocking arm and the pitman arm shaft is accurate.Therefore the increase of pitman arm shaft length bring difficulty can for the processing of pitman arm shaft, and also inconvenient when installing.
Lubricating of tradition valve rocker is then along pitman arm shaft direction step by step to distribute to each rocking arm through the cylinder cap oil duct by the oil channel hole in the middle of the pitman arm shaft by the lubricant oil on the body.If adopt single shaft, because lubricant oil distributes step by step, so lubricants capacity can successively decrease step by step, and particularly when local lubricating oil leakage amount was big, lubricated unbalanced phenomena was particularly evident.
Tradition overhead camshaft diesel engine because of the camshaft overhead, so that the cylinder cap upper space can become is crowded, needs when oil sprayer is installed fix with pressing plate, and limiting its vertical direction degrees of freedom, and pressing plate is tightened on the cylinder head with bolt.When motor in advanced development during the stage, because of needs debugging oil sprayer stretches out the cylinder cap bottom plane apart from d, as shown in Figure 3 because the size of d value has certain influence to emission performance, so need repeatedly change the oil sprayer spacer.When if the injector plate construction bolt is blocked by the intake and exhaust rocking arm on its top, need to cause the prototype test cycle long with changing the oil sprayer spacer after the rocker arrangement dismounting.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, can improve the rocker part greasy property, can conveniently install again, and can reduce the valve rocker apparatus of internal combustion engine in prototype test cycle thereby provide a kind of.
According to technological scheme provided by the invention, a kind of valve rocker apparatus of internal combustion engine comprises pitman arm shaft, intake rocker, exhaust rocker arm and pitman arm shaft bearing, it is characterized in that: described pitman arm shaft has two, and described two pitman arm shafts are arranged symmetrically on the pitman arm shaft bearing.
Described intake rocker is a fork configuration, and is the semicircle transition in the middle of the infall.
The top of described pitman arm shaft bearing is provided with the rocker shaft hole of level, its bottom is provided with the camshaft hole of level, be provided with vertical pitman arm shaft fixed bolt hole in the described rocker shaft hole, be communicated with by pitman arm shaft bearing oilhole between described camshaft hole and the described pitman arm shaft fixed bolt hole.
Described pitman arm shaft bearing comprises that pitman arm shaft left support abutment, pitman arm shaft intermediate support, pitman arm shaft right support abutment and pitman arm shaft connect bearing, and described two pitman arm shafts connect on the bearing at described pitman arm shaft and connect.
Be respectively equipped with radially pitman arm shaft oilhole, axial pitman arm shaft oil duct and pitman arm shaft bolt hole on described two pitman arm shafts, described pitman arm shaft bolt hole is corresponding with described pitman arm shaft fixed bolt hole.
Described pitman arm shaft left support abutment and pitman arm shaft right support abutment are provided with pitman arm shaft bearing oil duct, and described pitman arm shaft bearing oil duct is connected with cylinder cap oil duct and pitman arm shaft fixed bolt hole.
The pitman arm shaft fixed bolt hole that described pitman arm shaft connects on the bearing is made as two, and the circumference that described pitman arm shaft connects the camshaft hole of bearing is provided with middle oil groove, and each pitman arm shaft fixed bolt hole communicates with described middle oil groove by pitman arm shaft bearing oilhole.
Oil groove in the middle of also being provided with on the circumference of the camshaft hole of described pitman arm shaft intermediate support, described pitman arm shaft bearing oilhole communicates with described middle oil groove.
Described pitman arm shaft is by steel pipe manufacturing, and its two ends are provided with the bowl-type patch.
Compared with the prior art the present invention has the following advantages:
Because pitman arm shaft length shortens greatly, so this pitman arm shaft is easy to process; It is balanced to keep pitman arm shaft internal lubrication oil, guarantees lubricating quality; Can improve the rocker part greasy property, can conveniently install again; When need dismounting oil sprayer, when changing spacer, need not dismantle rocker arrangement, can reduce the prototype test cycle.
Description of drawings
Fig. 1 is a plan view of the present invention.
Fig. 2 is the A-A sectional view among Fig. 1, has wherein removed rocking arm.
Fig. 3 is the B-B sectional view among Fig. 2.
Fig. 4 is the C place enlarged view among Fig. 2.
Fig. 5 is the plan view of the pitman arm shaft left support abutment among the present invention.
Fig. 6 is the worm's eye view of Fig. 5.
Fig. 7 is the D-D sectional view among Fig. 5.
Fig. 8 is the E-E sectional view among Fig. 5.
Fig. 9 is the plan view of the pitman arm shaft right support abutment among the present invention.
Figure 10 is the worm's eye view of Fig. 9.
Figure 11 looks sectional view for the master of the pitman arm shaft intermediate support among the present invention.
Figure 12 is the worm's eye view of Figure 11.
Figure 13 connects the plan view of bearing for the pitman arm shaft among the present invention.
Figure 14 is the worm's eye view of Figure 13.
Figure 15 is pitman arm shaft among the present invention and the rocking arm partial sectional view after assembling.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
As Fig. 1～embodiment shown in Figure 7, be the valve rocker apparatus of six cylinder engine, comprise cylinder body 1, intake rocker 2, exhaust rocker arm 3; pitman arm shaft 4; pitman arm shaft connects bearing 5; pitman arm shaft fixing bolt 6; follower bolt 7; oil sprayer 8; cylinder cap oil duct 9; spacer 10; pitman arm shaft oilhole 11; pitman arm shaft oil duct 12; pitman arm shaft bearing oilhole 13; pitman arm shaft fixed bolt hole 14; middle oil groove 15; camshaft hole 16; rocker shaft hole 17; bowl-type patch 18; pitman arm shaft left support abutment 19; pitman arm shaft intermediate support 20; pitman arm shaft right support abutment 21 and pitman arm shaft bearing oil duct 22.
As shown in Figure 1 and Figure 2, the cylinder head of present embodiment is four air valve structures, comprises pitman arm shaft 4, intake rocker 2, exhaust rocker arm 3 and pitman arm shaft bearing.In the middle of the intake rocker 2 of every cylinder was positioned at, respectively there was an exhaust rocker arm 3 its both sides.Convenient for installation and processing, pitman arm shaft 4 is set to two, two pitman arm shafts 4 are arranged symmetrically on the pitman arm shaft bearing, are fixed on the pitman arm shaft bearing by pitman arm shaft fixing bolt 6.
As Fig. 3 and shown in Figure 15, intake rocker 2 is a fork configuration, and is the semicircle transition in the middle of the infall.Like this, follower bolt 7 and oil sprayer 8 just are in the fork configuration below of intake rocker 2.Dismantle follower bolt 7 for convenience, hexagonal structure in its head adopts.At dismounting oil sprayer 8, when changing spacer 10, can dismantle rocker arrangement, can reduce the prototype test cycle like this.
As Fig. 5～shown in Figure 14, the top of pitman arm shaft bearing is provided with the rocker shaft hole 17 of level, and its bottom is provided with the camshaft hole 16 of level.Be provided with vertical pitman arm shaft fixed bolt hole 14 in the rocker shaft hole 17, be communicated with by pitman arm shaft bearing oilhole 13 between camshaft hole 16 and the pitman arm shaft fixed bolt hole 14.
The pitman arm shaft bearing has four kinds, comprises that pitman arm shaft left support abutment 19, pitman arm shaft intermediate support 20, pitman arm shaft right support abutment 21 and pitman arm shaft connect bearing 5.Two pitman arm shafts 4 connect on the bearing 5 at pitman arm shaft and connect.
As Fig. 2, shown in Figure 4, be respectively equipped with radially pitman arm shaft oilhole 11, axial pitman arm shaft oil duct 12 and pitman arm shaft bolt hole on two pitman arm shafts 4, described pitman arm shaft bolt hole is corresponding with pitman arm shaft fixed bolt hole 14.
As Fig. 5～shown in Figure 10, pitman arm shaft left support abutment 19 and pitman arm shaft right support abutment 21 are provided with pitman arm shaft bearing oil duct 22.Pitman arm shaft bearing oil duct 22 is connected with cylinder cap oil duct 9 and pitman arm shaft fixed bolt hole 14.
As Figure 13, shown in Figure 14, the pitman arm shaft fixed bolt hole 14 that pitman arm shaft connects on the bearing 5 is made as two.The circumference that pitman arm shaft connects the camshaft hole 16 of bearing 5 is provided with middle oil groove 15, and each pitman arm shaft fixed bolt hole 14 communicates with middle oil groove 15 by pitman arm shaft bearing oilhole 13.
As Figure 11, shown in Figure 12, oil groove 15 in the middle of also being provided with on the circumference of the camshaft hole 16 of pitman arm shaft intermediate support 20, pitman arm shaft bearing oilhole 13 communicates with middle oil groove 15.
Greasing of the present invention is: lubricant oil enters pitman arm shaft oil duct 12 from the cylinder cap oil duct 9 at cylinder body 1 two ends through pitman arm shaft fixed bolt hole 14 respectively, when flow of lubricant connects bearing 5 to pitman arm shaft, through pitman arm shaft bearing oilhole 13, can converge in middle oil groove 15 positions.When the oil leakage amount in pitman arm shaft 4 wherein is bigger, the lubricant oil in another root pitman arm shaft 4 can through pitman arm shaft connect bearing 5 by middle oil groove 15 to its supply, thereby it is balanced to keep two pitman arm shaft 4 internal lubrications oil, guarantees lubricating quality.
Pitman arm shaft 4 is by steel pipe manufacturing, and its two ends are provided with bowl-type patch 18.Bowl-type patch 18 adopts standard piece, presses the QC/T388-1999 standard application.This kind pitman arm shaft 4 is simple in structure, and cost is low.
Claims (9)
1, a kind of valve rocker apparatus of internal combustion engine comprises pitman arm shaft (4), intake rocker (2), exhaust rocker arm (3) and pitman arm shaft bearing, and it is characterized in that: described pitman arm shaft (4) has two, and described two pitman arm shafts (4) are arranged symmetrically on the pitman arm shaft bearing.
2, valve rocker apparatus of internal combustion engine according to claim 1 is characterized in that described intake rocker (2) is a fork configuration, and is the semicircle transition in the middle of the infall.
3, valve rocker apparatus of internal combustion engine according to claim 1, it is characterized in that the top of described pitman arm shaft bearing is provided with the rocker shaft hole of level (17), its bottom is provided with the camshaft hole (16) of level, be provided with vertical pitman arm shaft fixed bolt hole (14) in the described rocker shaft hole (17), be communicated with by pitman arm shaft bearing oilhole (13) between described camshaft hole (16) and the described pitman arm shaft fixed bolt hole (14).
4, valve rocker apparatus of internal combustion engine according to claim 3, it is characterized in that described pitman arm shaft bearing comprises that pitman arm shaft left support abutment (19), pitman arm shaft intermediate support (20), pitman arm shaft right support abutment (21) and pitman arm shaft connect bearing (5), described two pitman arm shafts (4) connect bearing (5) at described pitman arm shaft and go up connection.
5, valve rocker apparatus of internal combustion engine according to claim 1, it is characterized in that being respectively equipped with on the described pitman arm shaft (4) radially pitman arm shaft oilhole (11), axial pitman arm shaft oil duct (12) and pitman arm shaft bolt hole, described pitman arm shaft bolt hole is corresponding with described pitman arm shaft fixed bolt hole (14).
6, valve rocker apparatus of internal combustion engine according to claim 4, it is characterized in that described pitman arm shaft left support abutment (19) and pitman arm shaft right support abutment (21) are provided with pitman arm shaft bearing oil duct (22), described pitman arm shaft bearing oil duct (22) is connected with cylinder cap oil duct (9) and pitman arm shaft fixed bolt hole (14).
7, valve rocker apparatus of internal combustion engine according to claim 4, it is characterized in that the pitman arm shaft fixed bolt hole (14) that described pitman arm shaft connects on the bearing (5) is made as two, the circumference that described pitman arm shaft connects the camshaft hole (16) of bearing (5) is provided with middle oil groove (15), and each pitman arm shaft fixed bolt hole (14) communicates with described middle oil groove (15) by pitman arm shaft bearing oilhole (13).
8, valve rocker apparatus of internal combustion engine according to claim 4, the circumference that it is characterized in that the camshaft hole (16) of described pitman arm shaft intermediate support (20) is provided with middle oil groove (15), and described pitman arm shaft bearing oilhole (13) communicates with described middle oil groove (15).
9, valve rocker apparatus of internal combustion engine according to claim 1 is characterized in that described pitman arm shaft (4) by steel pipe manufacturing, and its two ends are provided with bowl-type patch (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102360186A CN101413408A (en) | 2008-11-11 | 2008-11-11 | Valve rocker apparatus of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102360186A CN101413408A (en) | 2008-11-11 | 2008-11-11 | Valve rocker apparatus of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101413408A true CN101413408A (en) | 2009-04-22 |
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ID=40594114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102360186A Pending CN101413408A (en) | 2008-11-11 | 2008-11-11 | Valve rocker apparatus of internal combustion engine |
Country Status (1)
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| CN (1) | CN101413408A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511013A (en) * | 2012-06-26 | 2014-01-15 | 广西玉柴机器股份有限公司 | Engine rocker arm oiling inspection tool |
| CN111271147A (en) * | 2020-04-10 | 2020-06-12 | 安徽航瑞航空动力装备有限公司 | Engine valve rocker mounting structure |
| CN111350559A (en) * | 2020-05-08 | 2020-06-30 | 广西玉柴机器股份有限公司 | Camshaft rocker shaft component |
| CN115405394A (en) * | 2022-08-16 | 2022-11-29 | 一汽解放汽车有限公司 | Valve drive mechanism, engine and vehicle |
-
2008
- 2008-11-11 CN CNA2008102360186A patent/CN101413408A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511013A (en) * | 2012-06-26 | 2014-01-15 | 广西玉柴机器股份有限公司 | Engine rocker arm oiling inspection tool |
| CN103511013B (en) * | 2012-06-26 | 2015-11-25 | 广西玉柴机器股份有限公司 | Engine rocker oils cubing |
| CN111271147A (en) * | 2020-04-10 | 2020-06-12 | 安徽航瑞航空动力装备有限公司 | Engine valve rocker mounting structure |
| CN111350559A (en) * | 2020-05-08 | 2020-06-30 | 广西玉柴机器股份有限公司 | Camshaft rocker shaft component |
| CN111350559B (en) * | 2020-05-08 | 2024-04-26 | 广西玉柴机器股份有限公司 | Camshaft rocker shaft component |
| CN115405394A (en) * | 2022-08-16 | 2022-11-29 | 一汽解放汽车有限公司 | Valve drive mechanism, engine and vehicle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090422 |