CN108204259A - Independent hydraulic support element - Google Patents
Independent hydraulic support element Download PDFInfo
- Publication number
- CN108204259A CN108204259A CN201711228245.XA CN201711228245A CN108204259A CN 108204259 A CN108204259 A CN 108204259A CN 201711228245 A CN201711228245 A CN 201711228245A CN 108204259 A CN108204259 A CN 108204259A
- Authority
- CN
- China
- Prior art keywords
- piston
- housing
- support component
- sealing
- cylinder formula
- 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.)
- Granted
Links
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 53
- 230000008602 contraction Effects 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 14
- 230000002000 scavenging effect Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 230000000740 bleeding effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
- F01L1/20—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
- F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
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- 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
- F01L1/245—Hydraulic tappets
-
- 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
- F01L2001/2433—Self contained, e.g. sealed hydraulic lash adjusters
-
- 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
- F01L2301/00—Using particular materials
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention relates to a separate hydraulic support element (1.1) for a valve train of an internal combustion engine, comprising a pot-shaped cylinder housing (2) and a hollow cylinder piston (10) guided therein in an axially movable manner, wherein an inner end (13) of the piston is supported on a bottom wall (3) of the housing by means of a spring (25), wherein an outer end (15) of the piston projects beyond an outer edge (5) of the housing and is designed as a bearing head (16), and wherein an inner space (24) of the piston forms a pressure storage space which can be connected by means of a non-return valve (26) to a high-pressure space (27) enclosed between the inner end (13) of the piston and the bottom wall (3) of the housing. In order to simplify the filling of the hydraulic oil (40) with a defined filling quantity, a central bore (23) is arranged in the bearing head (16) of the piston (10) which acts as an injection opening and can be continuously closed after the injection of the hydraulic oil (40). Furthermore, the cylindrical side wall (14) of the piston (10) is completely closed.
Description
Technical field
The present invention relates to a kind of valve mechanism for internal combustion engine it is independent, i.e. independent of the hydraulic pressure branch of external fuel feeding
Element is supportted, the hollow cylinder formula piston guided in a manner of it can be axially moved with can-like cylinder sandwich type element and wherein, work
By spring supporting on the bottom wall of housing, the outer end of piston protrudes from the outer edge of housing and is configured to the inner end of plug
Supporting head, and the inner space of piston forms reservoir pressure space, and reservoir pressure space can be by check-valves and in piston
Inner end and housing bottom wall between the high-pressure space that crosses connect.
Background technology
Under loading state, hydraulic support element is generally inserted into vertically taking to a certain extent for the cylinder cap of internal combustion engine
To blind hole in, the supply connection coupled with the pressure oil feeding mechanism of internal combustion engine is passed into the cylinder formula hole wall of blind hole mostly
In.The reservoir pressure space of support component passes through the opening and supply line in the cylinder formula side wall of housing and piston in this case
Road connects, so as to can be again transported in reservoir pressure space due to the hydraulic oil or machine oil that are leaked out caused by leakage.
Hydraulic support element is applied in the valve mechanism of internal combustion engine, wherein, scavenging air valve, such as intake valve and air bleeding valve lead to
Rocking arm is crossed by the cam of camshaft to operate.The respective rocking arm outer end with the valve rod of at least one scavenging air valve on one end
Portion connects, and on its other end by hydraulic support element can pivotally support on the housing of cylinder cap.
Between two end, rocking arm is at least one cam contact back to that of scavenging air valve and support component side and camshaft.
In cam axle, rocking arm is put according to supporting part of the lift profile of cam on support component towards the direction of scavenging air valve
It moves or is swung in the opposite direction under the action of valve spring, scavenging air valve is opened and closed as a result,.In support component quilt
In the case of loaded, the piston of support component is axially pressed into housing, establishes high pressure in high-pressure space as a result, by
High pressure, check-valves remain turned-off, and are incorporated in incompressible hydraulic oil in high-pressure space and are formed between piston and housing
Rigid connection.In the case where support component unloads, the piston of support component by spring shaft upwards from housing to
Outer extruding, and therefore compensate the gap that may be present in valve mechanism.Here, forming negative pressure in high-pressure space, pass through
Negative pressure opens check-valves, and hydraulic oil can be flowed into from reservoir pressure space in high-pressure space, to compensate leakage loss.
Modern Internal-Combustion Engine has more and more intake valves and/or air bleeding valve in each cylinder, they are also frequently by list
Only camshaft opens and closes.In order to change the opening and closing time of scavenging air valve, camshaft can by phase shifter with it is interior
The transmission of crankshaft connection of combustion engine.Switch in addition, the valve mechanism of Modern Internal-Combustion Engine also partly has for the lift of scavenging air valve
Switching equipment or switching equipment for closing cylinder.This necessarily leads to the structure to become increasingly complex of cylinder cap, and causes narrow
For dispose for discharge pressure oil supply connection steric requirements.Because to the sliding bearing supply pressure oil of camshaft
Oil spout is supplied prior to giving the supply of other oil consumption device with to the sliding surface of cam and lift transmitting element, so having carried
Go out the hydraulic support element for no longer having and coupling with the pressure oil feeding mechanism of internal combustion engine.
Thus, for example the valve mechanism with hydraulic support element is described in 10 2,012 208 238 A1 of DE,
In, the oil supply of support component is carried out by the oil spout received.In this embodiment of valve mechanism, above cylinder cap or
Available oil spout inside valve deck is received, and pass through using the funnel shaped plate being fastened on the relevant end of rocking arm
Hole in rocking arm and the centre bore in the supporting head of piston are directed in the reservoir pressure space of support component.
The embodiment of the alternative of this hydraulic support element as known in 10 2,014 214 383 A1 of DE, wherein,
The oil spout collected on the upside of cylinder cap passes through the radial hole in the cannelure of two diametrically contrapositions and the cylinder formula side wall of housing and logical
At least one of the cylinder formula side wall of piston radial hole is crossed to be directed in the reservoir pressure space of support component.
Be designed to oil spout come supply hydraulic support element the shortcomings that be：At least for the scavenging air valve of identical generic,
I.e. intake valve or air bleeding valve use identical support component, but the oil spout gathered in the space between cylinder cap and valve deck usually exists
Local distribution is different.Therefore the oil spout supply to each support component may be caused excessive or very few.The shortcoming can be by making
With independent, i.e., avoided independent of the support component of each external fuel feeding.
This independent hydraulic support element is as known in 10 2,013 225 067 A1 of DE.Support component is utilized and is filled out for a long time
The hydraulic oil that fills is filled.Cylinder formula gap leakage between piston and housing passes through at least one side wall for being placed to piston
In outer annular groove in or be placed to housing side wall in interior annular groove in O-ring it is closed outward.Penetrate into leakage seam
Hydraulic oil in gap is collected in outer annular groove (its combination in the interior annular groove in the side wall of housing and in the side wall of piston
Retainer plate is the component part of the transport fixing piece of piston) in, and at least one of cylinder formula side wall for passing through piston diameter
It is directed in the reservoir pressure space of support component to hole.
Due to the check-valves closed when the pressure in high-pressure space is established, with hydraulic oil load well known to support component can
To be realized only before piston is inserted into housing or during this period by the radial hole in the side wall of piston, wherein, hydraulic oil
Loading limited by the lower seamed edge of radial hole.
Invention content
Therefore, the task that the present invention is based on is the independent hydraulic support element for the structure type for proposing to be initially mentioned,
Wherein, it can more simply be performed with hydraulic oil to load, and the loading of hydraulic oil can freely change.In addition, hydraulic pressure support
The structure of element should design as simply as possible.
The feature being initially mentioned of the preamble of the task combination claim 1 solves as follows, that is, in piston
Supporting head in be disposed with play the role of injection opening centre bore, injection setting loading hydraulic oil after energy
It is persistently closed, and the cylinder formula side wall of piston is closed completely.
The advantageous design scheme and improvement plan of this support component is the master of the dependent claims of claim 1
Topic.
The present invention is from especially by the only of the valve mechanism for being used for internal combustion engine well known in 10 2,013 225 067 A1 of DE
Vertical hydraulic support element is set out, and is guided in a manner of it can be axially moved with can-like cylinder sandwich type element and wherein hollow
Cylinder formula piston.By spring supporting on the bottom wall of housing, the axial outer end portion of piston protrudes from the axial inner end of piston
The outer edge of housing, and it is configured to preferred hemispheric supporting head.The inner space of piston forms reservoir pressure space, deposit
The high-pressure space connection that pressure space can be crossed by check-valves and between the axial inner end of piston and the bottom wall of housing.
In support component according to the present invention, it is configured with and plays the role of in injection opening in the supporting head of piston
Heart hole can persistently be closed after the hydraulic oil of injection loading determining in advance.Therefore the zero of assembling support component
After part, can from top with can the hydraulic oil of loading of arbitrary dosage load support component, and subsequent support component
It can persistently be closed.In addition, in support component according to the present invention, the cylinder formula side wall of piston is closed completely, that is, it does not have
There is break-through opening.It is formed as a result, in the case where Leakage Energy penetrates into, in the cylinder formula gap leakage between piston and housing anti-
Pressure is prevented by counter-pressure and accordingly reduces leakage oil stream.
The closing of injection opening can be opened for example by the closing cock that is pressed into taper or by the way that obturator is screwed into injection
In mouthful, pasted in injection is open or rivet obturator to realize.However be considered as particularly advantageously, the injection opening of piston exists
It is closed after injection hydraulic oil by being pressed into the steel ball equipped with interference diameters.
As the O-ring in interior annular groove that is at least one being placed in the outer annular groove of piston or being placed to housing
Alternative, in order to which the cylinder formula gap leakage being enclosed between piston and housing has been preferably provided with the back-off sealing of annular lid
Part (St ü lpdichtung), is made of, and be placed on the outer edge of housing under assembled state elastomer plastic,
Back-off sealing element is embedded into the annular in the side wall of housing using the interior fastening boss for the annular being arranged on its outer edge
In outer groove, and the outer cylindrical body formula for being sticked on using inner cylinder formula sealing configuration of the construction on its radially inward edge piston is sealed
On face.As a result, compared with the closing element by O-ring, advantageously avoid the turning in piston and go out outer groove or in the housing vehicle
Cut out inside groove.
The inner cylinder formula sealing configuration for being buckled to sealing element can have cylinder formula smooth seal face, stick on the outer of piston
On cylinder formula sealing surface.
But better seal effect can be realized as follows, that is, be buckled to the inner cylinder formula sealing configuration tool of sealing element
There is the sealed muscle of multiple axially spaced annulars, they are sticked on the outer cylindrical body formula sealing surface of piston.
Particularly advantageously, the outer cylindrical body formula of piston seals surface construction on the contraction flow region of the radial direction of piston, contraction flow region
Axially inner edge combines the inner circumference of back-off sealing element to the effect of the fixed stopper section of transport to piston.Now pass through by
The inward flange of contraction flow region abuts to prevents piston from being dropped out from housing on the inward flange of back-off sealing element.It is common by cancelling
Form is the transport fixing piece of retainer plate that guides in the broader inside groove of housing and in the broader outer groove of piston, housing and
The cylinder formula side wall of piston can glossily be implemented now with cylinder formula, and the manufacture of these components is significantly simpler and more honest and cleaner as a result,
Valency.
Description of the drawings
In order to illustrate the present invention, attached drawing of the tool there are four embodiment is enclosed to specification.Wherein：
Fig. 1 illustrates the first embodiment of support component according to the present invention with longitudinal center section；
Fig. 2 illustrates the second embodiment of support component according to the present invention with longitudinal center section；
Fig. 3 illustrates the third embodiment of support component according to the present invention with longitudinal center section；
Fig. 3 a illustrate the detail view of support component according to fig. 3 with the segment amplified；
Fig. 4 illustrates the 4th embodiment of support component according to the present invention with longitudinal center section；
Fig. 4 a illustrate the detail view of the support component according to Fig. 4 with the segment amplified；
Fig. 5 a are illustrated with longitudinal center section in the example of support component according to fig. 3, fully extended in piston
The liquid level of situation lower support element；
Fig. 5 b are illustrated with longitudinal center section in the example of support component according to fig. 3, are withdrawn completely in piston
The liquid level of situation lower support element.
Specific embodiment
Fig. 1 illustrates independent, independent of external fuel feeding hydraulic pressure support according to the present invention with longitudinal center section
The first embodiment of element 1.1 is arranged for the valve mechanism of internal combustion engine.Support component 1.1 has can-like cylinder formula
Housing 2 and the hollow cylinder formula piston 10 that can be guided in a manner of axial movement wherein.Piston 10 constructs in two style, and
By can-like cylinder formula inside points 11 and can-like cylinder formula outer portion 12 is formed to a certain extent, they, which are crossed, plays reservoir pressure
The inner space 24 of the effect in space.The axial inner end 13 of piston 10 is supported on shell by being configured to the spring 25 of helical spring
On the bottom wall 3 of body 2.The axial outer end portion 15 of piston 10 protrudes from the outer edge 5 of housing 2, and is configured to hemispheric bearing
First 16, it is retracted by the contraction flow region 20 of radial direction relative to the side wall 14 of the largely column body formula of piston 10.
It reservoir pressure space 24 can be by check-valves 26 and between the inner end 13 of piston 10 and the bottom wall 3 of housing 2
The high-pressure space 27 crossed connects, wherein, check-valves 26 prevents hydraulic oil from being flowed into reservoir pressure space 24 from high-pressure space 27
In.Under loading state, hydraulic support element 1.1 is inserted into the current unshowned cylinder cap of internal combustion engine in a generally known manner
The blind hole being vertically oriented to a certain extent in.
In order to piston 10 being avoided to be dropped out from housing 2 in the state of the non-loading of support component 1.1, current setting example
As transported fixing piece as well known to 10 2,013 225 067 A1 of DE, by broader in the cylinder formula side wall 4 of housing 2
Inside groove 6, the broader outer groove 17 in the cylinder formula side wall 14 of piston 10 and the open retainer plate guided in slot 6,17
28 form.When 10 first time of piston is inserted into housing 2, retainer plate 28 is arranged in the inside groove 6 of housing 2 with strutting, and
And when by spring 25 outwardly against piston 10, retainer plate 28 is by sticking on axial outer edge and the work of the inside groove 6 of housing 2
Piston 10 is prevented to drop out in the axially inner edge of the outer groove 17 of plug 10.After in the cylinder cap for being encased in internal combustion engine, retainer plate
28 are extruded in the case where piston 10 causes ground to be pressed into housing 2 for the first time due to operation in the outer groove 17 of piston 10,
And it is followed by inoperative.
For the cylinder formula gap leakage 29 between the side wall 4 of closed shell 2 and the side wall 14 of piston 10, similary known
Structure type in, in axial direction except the inside groove 6 of housing 2, and axially on piston 10 outer groove 17 moving region it
Outside, inside groove 7 is configured in the side wall 4 of housing 2, the sealing ring 30 for being configured to O-ring is placed in the inside groove.Sealing ring 30 pastes
It leans against on the outer cylindrical body formula sealing surface 22 of piston 10, which is located at being previously mentioned on the side wall 14 of outer groove 17 and piston 10
Between contraction flow region 20.
In order to load support component 1.1 with hydraulic oil, according to the present invention, the supporting head 16 of piston 10, which is equipped with, plays injection
The centre bore 23 of the effect of opening.It is loaded after piston 10 is inserted into housing 2 with the hydraulic oil of the loading of restriction
Support component 1.1.After that, injection opening 23 is persistently closed, this is currently passing through steel ball of the press-in equipped with interference diameters
32 realize.In order to make at this piston 10 be not pressed into housing 2 in turn result in transport fixing piece it is invalid, piston 10 should be at least
It is for example obtained in the axial direction in the contraction flow region 20 of piston 10 by the way that the branch stake tool of fork-shaped is embedded into during process of press in
Support.
The second embodiment party illustrated in fig. 2 with longitudinal center section of hydraulic support element 1.2 according to the present invention
Formula has the difference with the first embodiment of the hydraulic support element 1.1 according to Fig. 1 in the case of identical structure in other respects
Part is only that, in order to be enclosed in the cylinder formula gap leakage 29 between the side wall 4 of housing 2 and the side wall 14 of piston 10, now
In axial direction except the outer groove 17 of piston 10, the outer groove 18 of radial direction is configured in the side wall 14 of piston 10, is configured to O-ring
Sealing ring 31 is placed in the outer groove.Sealing ring 31 is sticked on the inner cylinder formula sealing surface 8 of housing 2, in the side wall of housing 2
It is constructed between inside groove 6 and outer edge 5 on 4.
Not therewith with ground, hydraulic support element 1.3 according to the present invention is illustrated in figure 3 with longitudinal center section
Third embodiment compares in addition close with gap leakage 29 with two previous embodiments of support component 1.1,1.2
The other transport fixing piece of closing member and piston 10.In order to be enclosed in the cylinder formula gap leakage between piston 10 and housing 2
29, it is provided with the back-off sealing element 33 of annular lid now, is made of elastomer plastic.Under assembled state, back-off is close
It is placed on the outer edge 5 of housing 2 in end side on sealing 33 is axial, and to be arranged in the annular on its outer edge 34
Fastening boss 35 is embedded in the outer groove 9 of the annular in the side wall 4 of housing 2.Back-off sealing element 33, which utilizes, is arranged in inner edges
Inner cylinder formula sealing configuration 37 on 36 is sticked on herein on the outer cylindrical body formula sealing surface 19 of piston 10.
It can be appreciated that the sealing of back-off sealing element 33 in the segment A enlargedly shown in fig. 3 a from Fig. 3
Profile 37 has cylinder formula smooth seal face 38, sticks on the outer cylindrical body formula sealing surface 19 of piston 10.The sealing of piston 10
Face 19 is constructed in the contraction flow region 20 ' to extend to axially inner side of piston 10, is combined so as to the axially inner edge 21 of contraction flow region 20 '
36 shape of inward flange accordingly to narrow of back-off sealing element 33 prevents piston 10 from being dropped out from housing 2, and therefore rise in locking manner
To the effect of the transport fixing piece for piston 10.
It is close by using being buckled to respect to two previous embodiments of the support component 1.1,1.2 of Fig. 1 and 2
Sealing 33 is avoided for O-ring 30,31 and turning goes out inside groove 7 or in the side wall 14 ' of piston 10 in the side wall 4 of housing 2
Turning goes out outer groove 18, and avoid it is fixed for the transport by retainer plate 28 and in the side wall 4 of housing 2 turning go out or rush
Extrude broader inside groove 6 and in the side wall 14 ' of piston 10 turning go out or stamp out broader outer groove 17.Housing 2 and piston
10 cylinder formula side wall 4,14 ' therefore can glossily it be implemented with cylinder formula now, as a result, with respect to the support of Fig. 1 and 2 member
It is significantly simpler and more cheap to manufacture these components for two previous embodiments of part 1.1,1.2.
The 4th embodiment party illustrated in Fig. 4 with longitudinal center section of hydraulic support element 1.4 according to the present invention
The difference of the third embodiment of hydraulic support element 1.3 in the case that formula has identical structure in other respects and according to fig. 3
Part is only that the other embodiments of the sealing configuration 37 of back-off sealing element 33.According to Fig. 4 in fig.4 enlargedly
It can be appreciated that the sealing configuration 37 of back-off sealing element 33 has multiple axially spaced rings now in the segment A ' shown
The sealed muscle 39 of shape, they are sticked on the outer cylindrical body formula sealing surface 19 of piston 10.
It is exemplary by the third embodiment of support component 1.3 according to fig. 3 with longitudinal center's sectional view in fig 5 a
The air for showing the liquid level 41 of the hydraulic oil 40 in piston 10 from housing 2 in the case of maximum stretching and being surrounded by no pressure
42.Depict the liquid level of the hydraulic oil 40 in the case where 10 maximum of piston is sunk in housing 2 in the corresponding way in figure 5b
41 ' and the air 42 that is correspondingly compressed.It is seen that, the entire fortune for being sufficient to realize piston 10 is needed from Fig. 5 a and 5b
The volume of air in dynamic region.In the case of the decline of piston 10 after the longer dwell time for example in internal combustion engine, compressed
Air 42 the quick of piston 10 is promoted in internal combustion engine start stretch out and high-pressure space 27 clogged with hydraulic oil 40.
Reference numerals list
1.1 support components (first embodiment)
1.2 support components (second embodiment)
1.3 support components (third embodiment)
1.4 support components (the 4th embodiment)
2 housings
3 bottom walls
4 side walls
5 outer edges
6 inside grooves
7 inside grooves
8 sealing surfaces
9 outer grooves
10 pistons
11 inside points
12 outer portions
13 inner ends
14th, 14 ' side wall
15 outer ends
16 supporting heads
17 outer grooves
18 outer grooves
19 sealing surfaces
20th, 20 ' contraction flow region
21 inward flanges
22 sealing surfaces
23 centre bores, injection opening
24 inner spaces, reservoir pressure space
25 springs, helical spring
26 check-valves
27 high-pressure spaces
28 retainer plates
29 gap leakages
30 sealing rings, O-ring
31 sealing rings, O-ring
32 obturators, steel ball
33 back-off sealing elements
34 outer edges
35 fastening boss
36 inward flanges
37 sealing configurations
38 sealing surfaces
39 sealed muscles
40 hydraulic oil
41st, 41 ' liquid level
42 air
A, A ' segments
Claims (6)
1. a kind of independent hydraulic support element (1.1,1.2,1.3,1.4) of valve mechanism for internal combustion engine, the hydraulic pressure
Support component has can-like cylinder sandwich type element (2) and the hollow cylinder formula guided in a manner of it can be axially moved in the housing
Piston (10), the inner end (13) of the piston are supported on by spring (25) on the bottom wall (3) of the housing (2), the work
The outer end (15) of plug protrudes from the outer edge (5) of the housing (2) and is configured to supporting head (16), and the piston
Inner space (24) forms reservoir pressure space, and the reservoir pressure space can be by check-valves (26) and in the piston
(10) high-pressure space (27) crossed between inner end (13) and the bottom wall (3) of the housing (2) is connect, which is characterized in that
The centre bore (23) for playing the role of injection opening is disposed in the supporting head (16) of the piston (10), the centre bore exists
Inject setting loading hydraulic oil (40) after can persistently be closed, and the piston (10) cylinder formula side wall (14,
14 ') it is closed completely.
2. support component according to claim 1, which is characterized in that the injection opening (23) of the piston (10) can pass through
Press-in is equipped with the steel ball (32) of interference diameters to close.
3. support component according to claim 1 or 2, which is characterized in that in order to be sealed in the piston (10) with it is described
Cylinder formula gap leakage (29) between housing (2), there is provided the back-off sealing element (33) of annular lid, the back-off sealing elements
(33) it is formed and is placed under assembled state on the outer edge (5) of the housing (2), the back-off by elastomer plastic
Sealing element (33) is embedded into the housing (2) using the interior fastening boss (35) for the annular being arranged on its outer edge (34)
In the outer groove (9) of annular in side wall (4), and the back-off sealing element (33) utilizes construction on its radially inward edge (36)
Inner cylinder formula sealing configuration (37) stick on the outer cylindrical body formula sealing surface (19) of the piston (10).
4. support component according to claim 3, which is characterized in that the inner cylinder formula sealing of the back-off sealing element (33)
Profile (37) has cylinder formula smooth seal face (38).
5. support component according to claim 3, which is characterized in that the inner cylinder formula sealing of the back-off sealing element (33)
Profile (37) has the sealed muscle (39) of multiple axially spaced annulars.
6. support component according to any one of claim 3 to 5, which is characterized in that the outer cylindrical body of the piston (10)
Formula sealing surface (19) is constructed on the contraction flow region (20 ') of the radial direction of the piston (10), the axial inner edge of the contraction flow region (20 ')
Edge (21) plays the fixed stopper section of transport to the piston (10) with reference to the inward flange (36) of the back-off sealing element (33)
Effect.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016124579.8A DE102016124579B3 (en) | 2016-12-16 | 2016-12-16 | Autonomous hydraulic support element |
| DE102016124579.8 | 2016-12-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108204259A true CN108204259A (en) | 2018-06-26 |
| CN108204259B CN108204259B (en) | 2022-08-09 |
Family
ID=61912790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711228245.XA Active CN108204259B (en) | 2016-12-16 | 2017-11-29 | Independent hydraulic support element |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108204259B (en) |
| DE (1) | DE102016124579B3 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE202023101104U1 (en) | 2023-03-09 | 2023-03-22 | Schaeffler Technologies AG & Co. KG | Hydraulic support element for a valve drive of an internal combustion engine |
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|---|---|---|---|---|
| EP1113147A2 (en) * | 1997-08-28 | 2001-07-04 | Eaton Corporation | Hydraulic lash compensator |
| US6418894B1 (en) * | 1999-11-03 | 2002-07-16 | Ina Walzlager Schaeffler Ohg | Engaging and disengaging support element |
| CA2572827A1 (en) * | 2004-07-22 | 2006-02-02 | Schaeffler Kg | Hydraulic valve clearance compensation element |
| CN101305166A (en) * | 2005-11-08 | 2008-11-12 | 丰田自动车株式会社 | Sealed lash adjuster and method for adjusting amount of liquid sealed in sealed lash adjuster |
| CN101932797A (en) * | 2008-08-28 | 2010-12-29 | 丰田自动车株式会社 | Hermetically sealed rush adjuster |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3805753A (en) | 1972-02-24 | 1974-04-23 | Johnson Products Inc | Hydraulic lash adjuster for overhead cam engines |
| DE102012208238A1 (en) | 2012-05-16 | 2013-11-21 | Schaeffler Technologies AG & Co. KG | Valve train operating device for an internal combustion engine |
| DE102013225067A1 (en) | 2013-12-06 | 2015-06-11 | Schaeffler Technologies AG & Co. KG | Hydraulic support element |
| DE102015205904A1 (en) | 2014-05-13 | 2015-11-19 | Schaeffler Technologies AG & Co. KG | Hydraulic support element |
| DE102014214383A1 (en) | 2014-07-23 | 2016-01-28 | Schaeffler Technologies AG & Co. KG | Hydraulic valve clearance compensation element for internal combustion engines |
-
2016
- 2016-12-16 DE DE102016124579.8A patent/DE102016124579B3/en active Active
-
2017
- 2017-11-29 CN CN201711228245.XA patent/CN108204259B/en active Active
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| EP1113147A2 (en) * | 1997-08-28 | 2001-07-04 | Eaton Corporation | Hydraulic lash compensator |
| US6418894B1 (en) * | 1999-11-03 | 2002-07-16 | Ina Walzlager Schaeffler Ohg | Engaging and disengaging support element |
| CA2572827A1 (en) * | 2004-07-22 | 2006-02-02 | Schaeffler Kg | Hydraulic valve clearance compensation element |
| CN101305166A (en) * | 2005-11-08 | 2008-11-12 | 丰田自动车株式会社 | Sealed lash adjuster and method for adjusting amount of liquid sealed in sealed lash adjuster |
| CN101932797A (en) * | 2008-08-28 | 2010-12-29 | 丰田自动车株式会社 | Hermetically sealed rush adjuster |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108204259B (en) | 2022-08-09 |
| DE102016124579B3 (en) | 2018-05-03 |
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