CN110043339A - The hydraulic rocker of non-overhead type valve actuating mechanism engine - Google Patents
The hydraulic rocker of non-overhead type valve actuating mechanism engine Download PDFInfo
- Publication number
- CN110043339A CN110043339A CN201910282744.XA CN201910282744A CN110043339A CN 110043339 A CN110043339 A CN 110043339A CN 201910282744 A CN201910282744 A CN 201910282744A CN 110043339 A CN110043339 A CN 110043339A
- Authority
- CN
- China
- Prior art keywords
- plunger
- rocker arm
- pressure chamber
- rocker
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
- F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
- F01L1/183—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft of the boat type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses a kind of hydraulic rockers of non-overhead type valve actuating mechanism engine.The hydraulic rocker of the non-overhead type valve actuating mechanism engine includes: rocker arm；And hydraulic lash automatic compensator comprising: the lower end of shell, circlip, flow regulator pieces, plunger, check valve and return spring, the shell is contacted with push rod or tappet, and upper end has plunger atrium；High pressure chest is formed between the plunger and shell；The plunger has the low pressure chamber of upper end opening, and the side of the low pressure chamber offers oil inlet, and the lower end of low pressure chamber offers check valve oil duct；The flow regulator pieces lid is located in the upper end opening of low pressure chamber, and has oil return hole；The check valve is used to block the check valve oil duct of low pressure chamber；The return spring is laid in high pressure chest.The hydraulic rocker of the non-overhead type valve actuating mechanism engine is of less demanding to the operation technique of assembly crewman, improves efficiency of installing software, is advantageously implemented the estimated performance of engine.
Description
Technical field
The present invention relates to engine arts, shake especially with regard to a kind of non-the hydraulic of overhead type valve actuating mechanism engine
Arm.
Background technique
In the non-top-mounted air distribution mechanism of engine, when camshaft pushes part to move upwards, after rocking-arm driving, shake
Arm pushes valve to move downward.Rocker arm plays the role of lever and commutation in transmission process.
When engine operation, the temperature of itself part can be increased, and part is heated to generate expansion.In valve actuating mechanism, shake
Between arm and valve cold conditions assemble when gapless, when the engine operates, valve expanded by heating elongation, so as to cause valve in original
This close moment can not close.Therefore, when cold conditions is assembled, to guarantee the gap for having certain between rocker arm and valve.
When existing common rocker arm cold conditions is assembled, there are gaps between rocker arm and valve, ensure that with this normal in engine
Valve energy normal switching-off when work, but design will appear following problem in this way:
(1) the gap value general control of rocker arm and valve is in 1mm, it is desirable that assembly crewman has very strong very professional gap tune
Whole operation technique.
(2) there are gaps between rocker arm and valve, will appear impact during rocker arm drives valve, make an uproar to generate percussion
Sound.
(3) after the assembly is completed, the gap value consistency of rocker arm and valve is poor；It is adjusted not at that time when there is valve clearance,
Will affect unlatching, the close moment of valve, while influencing valve stroke size, so influence the dynamic property of engine, economy,
Discharge etc..
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of simple and reasonable non-the hydraulic of overhead type valve actuating mechanism engine to shake
The hydraulic rocker of arm, the non-overhead type valve actuating mechanism engine is of less demanding to the operation technique of assembly crewman, improves installation
Efficiency reduces impact noise, ensure that valve is normally-open or closes, is advantageously implemented the estimated performance of engine.
To achieve the above object, the present invention provides a kind of hydraulic rockers of non-overhead type valve actuating mechanism engine, comprising:
Rocker arm, middle part have rocker shaft hole；The side of the rocker shaft hole has valve top, and the other side has rocker arm matching hole；It should
The bottom end of rocker arm matching hole has card slot, and oil duct and oil leak hole are also provided in the rocker arm, and the oil duct and rocker shaft hole connect
It is logical；And hydraulic lash automatic compensator comprising: shell, circlip, flow regulator pieces, plunger, check valve and return spring, it is described
Shell is assembled by its periphery and rocker arm matching hole clearance fit, and is cooperated by the card slot of circlip and rocker arm and assembled, the shell
The lower end of body is contacted with push rod or tappet, and upper end has plunger atrium；The plunger is opened by the plunger of its periphery and shell
The assembly of oral cavity clearance fit, forms high pressure chest between the plunger and shell；The plunger has the low pressure chamber of upper end opening, institute
The side for stating low pressure chamber offers oil inlet, and the lower end of low pressure chamber offers check valve oil duct；The flow regulator pieces lid is located at low pressure
In the upper end opening of chamber, and there is oil return hole；When rocker arm and hydraulic lash automatic compensator assemble, flow regulator pieces and rocker arm matching hole
Top be in close contact；The check valve is used to block the check valve oil duct of low pressure chamber；The return spring is laid in high pressure chest
Interior, one end of return spring connects plunger base, and the other end connects case inside bottom.
In a preferred embodiment, check valve includes: steel ball, one-way valve spring and spring base, and the spring base is solid
It is scheduled on plunger lower end, one end of the one-way valve spring pushes against spring base, and the other end pushes against the check valve that steel ball blocks low pressure chamber
Oil duct.
In a preferred embodiment, the diameter of check valve oil duct is 2mm, and the diameter of steel ball is 3mm.
In a preferred embodiment, the initial pretightening force of one-way valve spring is 0.0173N；The return spring 1
Initial pretightening force is 19.6N.
Compared with prior art, the hydraulic rocker of non-overhead type valve actuating mechanism engine according to the present invention has and has as follows
Beneficial effect:
(1) when engine cold state is assembled, rocker arm and valve are gapless assembly, are required not the operation technique of assembly crewman
Height improves efficiency of installing software.
(2) when valve actuating mechanism works, close contact is remained between part, reduces impact noise.
(3) hydraulic rocker energy automatic compensation gap or part elongation ensure that valve is normally-open or closes, be conducive to
Realize the estimated performance of engine.
Detailed description of the invention
Fig. 1 is that the structure of the hydraulic rocker of the non-overhead type valve actuating mechanism engine of first embodiment according to the present invention is shown
It is intended to.
Fig. 2 is the section view knot of the hydraulic rocker of the non-overhead type valve actuating mechanism engine of first embodiment according to the present invention
Structure schematic diagram.
Fig. 3 is hydraulic of the hydraulic rocker of the non-overhead type valve actuating mechanism engine of first embodiment according to the present invention
Gap automatic compensator structural schematic diagram.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As depicted in figs. 1 and 2, the hydraulic rocker of non-overhead type valve actuating mechanism engine according to the preferred embodiment of the invention
Specific structure include: rocker arm and hydraulic lash automatic compensator 3, wherein when rocker arm and hydraulic lash automatic compensator assemble,
The flow regulator pieces of hydraulic lash automatic compensator and the top of rocker arm matching hole are in close contact；The circlip of hydraulic lash automatic compensator
Cooperate with the card slot 6 of rocker arm and assemble, the movement position of spacing compensator shell is carried out with this.Engine cold state assemble when, rocker arm with
Valve is gapless assembly, of less demanding to the operation technique of assembly crewman, improves efficiency of installing software.When valve actuating mechanism works,
Close contact is remained between part, reduces impact noise.Hydraulic rocker energy automatic compensation gap or part elongation guarantee
Valve is normally-open or closes, and is advantageously implemented the estimated performance of engine.
Specifically, the middle part of rocker arm has rocker shaft hole 2；The side of rocker shaft hole 2 has valve top 1, the other side
With rocker arm matching hole, for laying hydraulic lash automatic compensator 3；The bottom end of rocker arm matching hole has card slot 6, for limiting
The movement position of the shell of hydraulic lash automatic compensator 3.Oil duct 5 and oil leak hole 4, oil duct 5 and rocker arm are also provided in rocker arm
Axis hole 2 is connected to, and the machine oil of lubricating oil pump output flow to rocker shaft hole 2 (rocker arm shaft position) by engine interior oil duct.Rocker arm
The machine oil of shaft position flows into the low pressure chamber of hydraulic clearance automatic compensation device by rocker arm oil input channel 5.Oil leak hole 4 is used for will be hydraulic
Engine oil in the low pressure chamber of clearance automatic compensation device is to the external world.When installation, valve top 1 is contacted with valve stem, hydraulic lash
Automatic compensator 3 is contacted with push rod (or tappet), and rocker arm only can be around rocker shaft hole 2 (axis) rotary motion.
As shown in figure 3, hydraulic lash automatic compensator 3 include: shell 7, circlip 8, flow regulator pieces 9, plunger 10, check valve and
Return spring 11, wherein shell 7 is assembled by its periphery and rocker arm matching hole clearance fit, and passes through the card of circlip 8 and rocker arm
The cooperation assembly of slot 6, the movement position of spacing compensator shell is carried out with this.The lower end of shell 7 is contacted with push rod (or tappet), upper end
With plunger atrium.Plunger 10 is assembled by the plunger atrium clearance fit of its periphery and shell 7, plunger 10 and shell 7
Between formed high pressure chest 12.Plunger 10 has the low pressure chamber 13 of upper end opening, and the side of low pressure chamber offers oil inlet, low pressure chamber
Lower end offer check valve oil duct.The lid of flow regulator pieces 9 is located in the upper end opening of low pressure chamber, and has oil return hole；Rocker arm and liquid
When pressing the assembly of clearance automatic compensation device, the top of flow regulator pieces and rocker arm matching hole is in close contact.
Check valve includes: steel ball 14, one-way valve spring 15 and spring base 16.Spring base is fixed on hydraulic lash and compensates automatically
The plunger lower end of device, one end of one-way valve spring 15 push against spring base 16, and the other end pushes against steel ball 14 and blocks the unidirectional of low pressure chamber
Valve oil road, it is single when high pressure chest oil pressure and one-way valve spring are less than low pressure chamber oil pressure to steel ball active force to steel ball effect resultant force
It is opened to valve, machine oil flows into high pressure chest by low pressure chamber.When high pressure chest oil pressure and one-way valve spring act on resultant force greater than low to steel ball
When pressing chamber oil pressure to steel ball active force, steel ball is taken a seat so that closed check valve, the machine oil of low pressure chamber can not flow into high pressure chest.It is hydraulic
Clearance automatic compensation device inner walls face and outer plunger surface have small fit clearance, and the machine oil in high pressure chest passes through the gap
It leaks into low pressure chamber.
Preferably, the diameter of check valve oil duct is 2mm, and the diameter of steel ball is 3mm.
Preferably, one-way valve spring initial pretightening force is 0.0173N.
Return spring 11 is laid in high pressure chest 12, and one end of return spring connects plunger base, and the other end connects shell
Inside bottom, initial pretightening force 19.6N.Return spring is upward to the active force of plunger, so that plunger closely connects with flow regulator pieces
Touching, while being in close contact at the top of flow regulator pieces with rocker arm, therefore under spring force, oil pressure and rocker arm collective effect, plunger stress is flat
Weighing apparatus, in rocker arm work, plunger is stationary relative to rocker arm.When return spring and high pressure chest oil pressure are to the effect resultant force of shell
When greater than carrying outside shell, shell is pushed out rocker arm；When hull outside encounters circlip, shell moves out stopping.Work as return spring
The effect of shell resultant force is less than with high pressure chest oil pressure when being carried outside shell, shell is pressed into rocker arm；Case inside encounters plunger bottom
When portion, shell inwardly moves stopping.
Fig. 2 is the schematic diagram that Fig. 1 is splitted by the center line of oil duct 5.When engine operation, the machine of lubricating oil pump output
Oil flow to rocker arm shaft position by engine interior oil duct.The machine oil of rocker arm shaft position flows into hydraulic by rocker arm oil input channel 5
In the low pressure chamber of clearance automatic compensation device.The flow direction of low pressure chamber machine oil: (1) hydraulic lash automatic compensator shell and rocker arm cooperate
Wall surface of the hole has small fit clearance, and the machine oil in low pressure chamber passes through the clearance leakage to the external world；(2) hydraulic lash compensates automatically
The flow regulator pieces of device circumferentially have small fit clearance, while design has the oil return hole axially flowed to, and the machine oil in low pressure chamber passes through
The two positions leak at the oil leak hole 4 of rocker arm, then flow out the external world by oil leak hole 4；(3) pass through check valve, in low pressure chamber
Machine oil flows into high pressure chest.
When valve actuating mechanism works, after the elongation of valve expanded by heating, it is pressed into after hydraulic lash automatic compensator shell is loaded
Rocker arm a small distance guarantees valve energy normal switching-off with this.When gap occur in valve and rocker arm, hydraulic lash compensates automatically
Device shell is pushed out rocker arm, compensates this portion gap, guarantees to be in close contact between part.
To sum up, the hydraulic rocker of the non-overhead type valve actuating mechanism engine is of less demanding to the operation technique of assembly crewman,
Efficiency of installing software is improved, impact noise is reduced, ensure that valve is normally-open or closes, be advantageously implemented the expection of engine
Performance.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (4)
1. a kind of hydraulic rocker of non-overhead type valve actuating mechanism engine characterized by comprising
Rocker arm, middle part have rocker shaft hole；The side of the rocker shaft hole has valve top, and the other side cooperates with rocker arm
Hole；The bottom end of the rocker arm matching hole has card slot, is also provided with oil duct and oil leak hole, the oil duct and rocker arm shaft in the rocker arm
Hole connection；And
Hydraulic lash automatic compensator comprising: shell, circlip, flow regulator pieces, plunger, check valve and return spring, the shell
It is assembled by its periphery and rocker arm matching hole clearance fit, and is cooperated by the card slot of circlip and rocker arm and assembled, the shell
Lower end is contacted with push rod or tappet, and upper end has plunger atrium；The plunger passes through the plunger atrium of its periphery and shell
Clearance fit assembly, forms high pressure chest between the plunger and shell；The plunger has the low pressure chamber of upper end opening, described low
The side of pressure chamber offers oil inlet, and the lower end of low pressure chamber offers check valve oil duct；The flow regulator pieces lid is located at low pressure chamber
In upper end opening, and there is oil return hole；When rocker arm and hydraulic lash automatic compensator assemble, the top of flow regulator pieces and rocker arm matching hole
Portion is in close contact；The check valve is used to block the check valve oil duct of low pressure chamber；The return spring is laid in high pressure chest, is returned
One end of position spring connects plunger base, and the other end connects case inside bottom.
2. the hydraulic rocker of non-overhead type valve actuating mechanism engine as described in claim 1, which is characterized in that the check valve
It include: steel ball, one-way valve spring and spring base, the spring base is fixed on plunger lower end, and one end of the one-way valve spring is supported
Tight spring base, the other end push against the check valve oil duct that steel ball blocks low pressure chamber.
3. the hydraulic rocker of non-overhead type valve actuating mechanism engine as described in claim 1, which is characterized in that the check valve
The diameter of oil duct is 2mm, and the diameter of steel ball is 3mm.
4. the hydraulic rocker of non-overhead type valve actuating mechanism engine as described in claim 1, which is characterized in that the check valve
The initial pretightening force of spring is 0.0173N；The initial pretightening force of the return spring 1 is 19.6N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910282744.XA CN110043339A (en) | 2019-04-10 | 2019-04-10 | The hydraulic rocker of non-overhead type valve actuating mechanism engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910282744.XA CN110043339A (en) | 2019-04-10 | 2019-04-10 | The hydraulic rocker of non-overhead type valve actuating mechanism engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110043339A true CN110043339A (en) | 2019-07-23 |
Family
ID=67276588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910282744.XA Pending CN110043339A (en) | 2019-04-10 | 2019-04-10 | The hydraulic rocker of non-overhead type valve actuating mechanism engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN110043339A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513168A (en) * | 2019-09-02 | 2019-11-29 | 浙江黎明智造股份有限公司 | A kind of valve Biodge device can compensate for valve clearance |
| CN110645064A (en) * | 2019-10-31 | 2020-01-03 | 东风汽车零部件(集团)有限公司襄阳粉末冶金分公司 | Hydraulic tappet for valve actuating mechanism of diesel engine |
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| JP3426578B2 (en) * | 2000-11-22 | 2003-07-14 | 本田技研工業株式会社 | Lubrication structure for internal combustion engine |
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| CN203383868U (en) * | 2013-07-25 | 2014-01-08 | 宜宾天工机械股份有限公司 | Hydraulic tappet type zero clearance air distributing device for air valve |
| CN103939164A (en) * | 2014-04-25 | 2014-07-23 | 安徽江淮汽车股份有限公司 | Engine valve clearance adjuster |
| CN209671027U (en) * | 2019-04-10 | 2019-11-22 | 广西玉柴机器股份有限公司 | The hydraulic rocker of non-overhead type valve actuating mechanism engine |
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2019
- 2019-04-10 CN CN201910282744.XA patent/CN110043339A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3426578B2 (en) * | 2000-11-22 | 2003-07-14 | 本田技研工業株式会社 | Lubrication structure for internal combustion engine |
| CN2502011Y (en) * | 2001-08-23 | 2002-07-24 | 宜宾天工机械股份有限公司 | Transmission assembly of rocker arm insertion type valve mechanism |
| JP2003343229A (en) * | 2002-05-23 | 2003-12-03 | Honda Motor Co Ltd | Device for supplying oil-pressure in valve train |
| CN203383868U (en) * | 2013-07-25 | 2014-01-08 | 宜宾天工机械股份有限公司 | Hydraulic tappet type zero clearance air distributing device for air valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513168A (en) * | 2019-09-02 | 2019-11-29 | 浙江黎明智造股份有限公司 | A kind of valve Biodge device can compensate for valve clearance |
| CN110645064A (en) * | 2019-10-31 | 2020-01-03 | 东风汽车零部件(集团)有限公司襄阳粉末冶金分公司 | Hydraulic tappet for valve actuating mechanism of diesel engine |
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Application publication date: 20190723 |