CN202810984U - Air valve driving device of internal combustion engine - Google Patents
Air valve driving device of internal combustion engine Download PDFInfo
- Publication number
- CN202810984U CN202810984U CN2012201309428U CN201220130942U CN202810984U CN 202810984 U CN202810984 U CN 202810984U CN 2012201309428 U CN2012201309428 U CN 2012201309428U CN 201220130942 U CN201220130942 U CN 201220130942U CN 202810984 U CN202810984 U CN 202810984U
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- Prior art keywords
- camshaft
- corresponding sliding
- sliding cam
- cam
- sliding sleeve
- Prior art date
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims description 7
- 239000011049 pearl Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000002000 scavenging effect Effects 0.000 abstract 1
- 230000003993 interaction Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 210000001331 nose Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
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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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
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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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
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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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/08—Shape of cams
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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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
-
- 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0471—Assembled camshafts
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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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Provided is an air valve driving device of an internal combustion engine. In order to operate a scavenging valve, the air valve driving device is provided with at least one camshaft (1) rotationally supported in camshaft bearings (2, 3), the camshaft is provided with a sliding cam (5) capable of axially sliding on the camshaft. Because the sliding cam (5) is supported in such a manner, both of the centering and the torque transmission are ensured even though the sliding cam has the property of axial sliding. The sliding cam (5) enables a sliding sleeve (15) to take an effect of transmitting torque to the sliding cam because the sliding sleeve (15) is slidably supported on the camshaft in the axial direction. The sliding cam (5) is axially and slidably supported on a bearing sleeve (8) with respect to the bearing sleeve (8) of the camshaft bearings (2, 3) by means of the side part (17) protruding in the axial direction, and the bearing sleeve centers the sliding cam (5).
Description
Technical field
The present invention relates to a kind of valve actuator of multi-cylinder engine, and relate to a kind of method for the manufacture of such valve actuator.
Background technique
In Modern Internal-Combustion Engine, for the charge movement in the Optimizing Combustion chamber, adopted variable valve actuator, in the ventilation valve of internal-combustion engine, can regulate different valve strokes by valve actuator.From the valve actuator of the known a kind of internal-combustion engine of DE 19611641C1, can handle a ventilation valve with a plurality of different stroke curves by it.For this reason, with a sliding cam of a plurality of cam rails without with the relative rotation but axially be bearing on the camshaft slidably.This sliding cam has a slideway part, is combined with an actuating element that is in the pin form of actuator in described slideway part, for generation of endwisely slipping of described sliding cam.By the described sliding cam that endwisely slips, in corresponding ventilation valve, regulate different valve strokes.According to DE 19611641C1, described sliding cam can be by a braking device braking after the endwisely slipping of its relative camshaft.
Same known with axial slidably a kind of internal-combustion engine valve actuator of sliding cam on camshaft from DE 102007027979A1.According to this prior art, described sliding cam has an interior toothed portion, for at the described sliding cam of described camshaft upper support, an external tooth part of described interior toothed portion and described camshaft is interaction effect as follows: although the relative described cam shaft of described sliding cam is to slidably, but guarantee that described sliding cam centers at described camshaft on the one hand, and transmitting torque on guaranteeing on the other hand from described camshaft to described sliding cam.
So according to the prior art, the function of the function that centers and moment of torsion transmission is partly born by the same interior toothed portion of described sliding cam and the external tooth of described camshaft.This supporting means of bearing simultaneously center function and moment of torsion propagation function is highstrung to tolerance and is merely able to make with expensive.
Summary of the invention
The objective of the invention is, improve described valve actuator, make it more insensitive and can make with very low cost to tolerance.To propose in addition to make a kind of so a kind of simple method of valve actuator.
According to the present invention, this purpose realizes by a kind of valve actuator.
According to the present invention, a kind of valve actuator for multi-cylinder engine is proposed, wherein in order to handle a plurality of ventilation valves of this internal-combustion engine, at least one is set rotatably is supported on camshaft in the camshaft bearing, this camshaft is with at least one axial sliding cam slidably on corresponding camshaft (1), wherein so support corresponding sliding cam: although so that corresponding sliding cam has axially slidably property with respect to corresponding camshaft, but guarantee on the one hand a kind of effect of centering of corresponding sliding cam, and another side guarantees the moment of torsion transmission to corresponding sliding cam, wherein, a) corresponding sliding cam by one on corresponding camshaft axially slidably sliding sleeve so axially be bearing in slidably on the corresponding camshaft play to the effect of corresponding sliding cam transmitting torque so that see diametrically this corresponding sliding sleeve that is positioned between corresponding camshaft and the corresponding sliding cam and on the intermediate portion of seeing in the axial direction of corresponding sliding cam, is permanently connected with this sliding cam; B) corresponding sliding cam by its in the axial direction read fortune for the corresponding sliding sleeve lateral parts of projection laterally, the bearing sleeve that axially is not fixed on slidably on this camshaft with respect to these camshaft bearings axially is bearing on these bearing sleeves slidably, and these bearing sleeves are used for corresponding sliding cam is centered.
According to the present invention, corresponding sliding cam by one can on the corresponding camshaft in axial sliding sliding sleeve as follows, axially be bearing in slidably on the corresponding camshaft: so that see diametrically and be positioned between corresponding camshaft and the corresponding sliding cam and play to the effect of corresponding sliding cam transmitting torque at this corresponding sliding sleeve that the corresponding intermediate portion of seeing in the axial direction of sliding cam is permanently connected with it; Wherein, corresponding sliding cam is looked with respect to the corresponding sliding sleeve part of projection laterally in the axial direction by it, the axial bearing sleeve that is not fixed on slidably on the camshaft with respect to camshaft bearing, axially be bearing in slidably on the described bearing sleeve, described bearing sleeve plays the effect of centering of corresponding sliding cam.
In valve actuator of the present invention, the function that centers of corresponding sliding cam is not only to separate with the space on function with function to corresponding sliding cam transmitting torque, and function is distributed on the different component combinations, namely the moment of torsion propagation function is distributed to camshaft, sliding sleeve and sliding cam and the function that centers is distributed to camshaft, bearing sleeve and sliding cam.This allows to design respectively according to concrete needs the parts of corresponding participation, allows reduction to the receptance of tolerance and allows to make simply described valve actuator.
Preferred described bearing sleeve and sliding sleeve correspondingly have a plurality of flats on an one excircle, these flats in this excircle upper control limit a plurality of support shoulders, the in a circumferential direction read fortune of the flat of wherein said bearing sleeve is staggered for the flat of sliding sleeve.Support thus simple manufacturing and the installation of described valve actuator.
The method of making a kind of like this valve actuator comprises following steps at least: the camshaft that a) provides at least one to have an external tooth part b) provides a plurality of bearing sleeves with an interior toothed portion of camshaft bearing to have the sliding sleeve of an interior toothed portion with at least one; C) provide at least one sliding cam; D) arrange and fix a bearing sleeve at corresponding camshaft, at corresponding camshaft a sliding sleeve is set subsequently, and arrange and fix another bearing sleeve at corresponding camshaft subsequently, wherein so repeat until all sliding sleeves and bearing sleeve all are positioned on the corresponding camshaft; E) eliminating under the condition of the degree of eccentricity, this or each sliding sleeve of being arranged on these bearing sleeves on the respective cams axle and be arranged on the corresponding camshaft are being carried out final finished processing; F) preferably by means of material stacking (Materialaufwurf), consist of groove, especially longitudinal fluting in an outside of this or each sliding sleeve; G) arrange and fixing corresponding sliding cam at corresponding sliding sleeve.
Description of drawings
Other feature and Feature Combination provide in this manual.At length explain orally specific embodiments of the invention below with reference to the accompanying drawing of reduced representation and follow-up explanation.In the accompanying drawings:
Fig. 1 illustrates a schematic sectional view of the valve actuator of an internal-combustion engine;
Fig. 2 is illustrated in the details of valve actuator shown in Figure 1 under the part finishing stage;
Fig. 3 illustrates the cross-sectional view by the valve actuator of Fig. 2 along hatching line direction A-A; And
Fig. 4 illustrates the cross-sectional view by the valve actuator of Fig. 2 along hatching line direction B-B.
Embodiment
Fig. 1 is illustrated in the zone of a camshaft 1 of valve actuator of internal-combustion engine the cross-sectional view by this internal-combustion engine.Camshaft 1 shown in Fig. 1 is bearing in by camshaft bearing 2,3 in the cylinder head that does not illustrate of described internal-combustion engine, and described cylinder head preferably is comprised of a cylinder head bottom and a camshaft case.Cylinder head bottom and camshaft case can also be that single type consists of.
Camshaft 1 shown in Fig. 1 is embodied as admission cam shaft and plays the effect of the air intake valve 4 of controlling combustion engine by means of the pulley drawbar that does not illustrate among the figure.For the I. C. engine exhaust valve that does not illustrate in the control graph, there is the exhaust cam shaft that does not illustrate among the figure.Described air intake valve and drain tap are the ventilation valve of internal-combustion engine.
Each cylinder preferably arranges the drain tap that does not illustrate among two air intake valves 4 and two figure, and wherein air intake valve 4 is controllably handled by admission cam shaft 1 in known manner.Described drain tap is controllably handled by the exhaust cam shaft that does not illustrate among the figure in known manner.In addition, the exhaust cam shaft that does not illustrate among admission cam shaft 1 and the figure has a plurality of sliding cams 5 separately.
In order to be bearing among Fig. 1 on the visible admission cam shaft 1, be provided with the camshaft bearing that constitutes the radial bearing device 2,3 of having mentioned, these camshaft bearings comprise the bearing ring body 6 of a bottom, and this bearer ring body can consist of with camshaft case 4 single type ground.Each camshaft bearing 2,3 comprises an independent bearing cap 7 and a bearing sleeve 8 that is fixed on the admission cam shaft 1 in addition, and described bearing cap for example is fixed on the bearing ring body 6 of bottom by means of screw.Bearing cap 7 can form a bearing bridge.
According to Fig. 1, the slideway part 9 in the middle of sliding cam 5 is positioned at by and the cam portion 10 of two outsides consist of.Each outside cam portion 10 comprises three cam rails 11, wherein regulates a different valve stroke with in these cam rails 11 each.Accordingly the sliding cam shown in Fig. 15 to each valve comprise axially slidably, with a cam portion 10 of three cam rails 11.Also may near described cam portion 10, there be to lateral outer a plurality of slideway parts.Each sliding cam 5 is attached troops to a unit an actuator 12, and described actuator has a plurality of pins 13, these pins with in a cover of slideway part 9 a plurality of grooves 14 interaction effects that consist of, sliding cam 5.Carrying out a kind of of sliding cam 5 in the zone between two camshaft bearings 2,3 thus endwisely slips.
By endwisely slipping of sliding cam 5, handle pointedly corresponding ventilation valve with a definite cam rail 11, regulate thereby carry out different valve strokes.The pin 13 of actuator 12 is familiar with for the those skilled in the art in the field that relates at this with the interaction effect of the groove 14 of slideway part 9.
In order to guarantee the orderly function of described valve actuator, each corresponding sliding cam 5 one side relatively camshaft 1 center, and must guarantee the moment of torsion transmission from camshaft 1 to corresponding sliding cam 5 on the other hand.
For 5 moment of torsion transmission is provided from camshaft 1 to sliding cam, the sliding cam 5 shown in Fig. 1 axially is bearing on the camshaft 1 slidably by a sliding sleeve 15 that axially is bearing in slidably on the camshaft 1.
At this, sliding sleeve 15 sees diametrically and is positioned between camshaft 1 and the sliding cam 5 that wherein an intermediate portion 16 of sliding sleeve 15 usefulness sliding cams 5 is connected with the relative rotation with its nothing.So camshaft 1 carries out to sliding sleeve 15 and by sliding sleeve 15 the most backward sliding cams 5 from camshaft 1 to the moment of torsion transmission of sliding cam 5.
So sliding cam 5 is undertaken by the bearing sleeve 8 that axially is not fixed on slidably on the camshaft 1 in the effect of centering on the camshaft 1, and sliding cam 5 by sliding sleeve 15 with respect to described bearing sleeve axially slidably.
So the moment of torsion propagation function of corresponding sliding cam 5 and the function that centers not only are separated from each other with the space on function, and these functions are provided by different component combinations.
The moment of torsion propagation function is by camshaft 1, axially slidably but without being arranged on the relative rotation sliding sleeve 15 on the camshaft 1 and axial restraint and providing without the sliding cam 5 that is arranged on the sliding sleeve 15 with the relative rotation.
Described center function by camshaft 1, axial restraint and without be arranged on the relative rotation on the camshaft 1 these bearing sleeves 8 and with respect to bearing sleeve 8 axially slidably sliding cam 5 provide.
Camshaft 1 has an external tooth part 18, interior toothed portion 19 interaction effects of described external tooth part and sliding sleeve 15, wherein, during these toothed portions 18,19 are coupled to each other and the slidably property of sliding sleeve 15 on camshaft 1 and the non-rotatable property of 15 pairs of described camshafts 1 of sliding sleeve be provided, thereby and provide sliding cam 5 on described camshaft axially slidably property and from camshaft 1 by the moment of torsion transmission of sliding sleeve 15 to sliding cam 5.
These bearing sleeves 8 especially are connected with camshaft 1 force closure ground by it being pressed on the camshaft 1, wherein these bearing sleeves 8 on the one hand in the axial direction with respect to camshaft 1 be not slidably and be non-rotatable with respect to camshaft 1 in a circumferential direction on the other hand or nothing connected with the relative rotation.Corresponding sliding cam 5 by read fortune in the axial direction for corresponding sliding sleeve 15 laterally the lateral parts 17 of projection axially be bearing in slidably on camshaft bearing 2,3 the bearing sleeve 8 with respect to bearing sleeve 8.
So can find out from Fig. 3, on the excircle of these sliding sleeves 8, correspondingly be distributed with three flats 20, each three the support shoulder 22 mutual gauges that these flats will distribute at the circumference of corresponding sliding sleeve 8 are opened.Can see that from Fig. 4 method is distributed with three flats 21 at the excircle of corresponding sliding sleeve 15 in a similar fashion, these flats with three support shoulders 23 each other gauge open.
These flats 20 of bearing sleeve 8 mutually stagger with respect to these flats 21 of sliding sleeve 15 and thus these of bearing sleeve 8 support shoulders 22 and support shoulders 23 with respect to these of sliding sleeve 15 and mutually stagger, be that its mode is, support shoulder 22 at axis projection (referring to Fig. 4) bearing sleeve 8 aligns with the space 21 of sliding sleeve 15, and the support shoulder 23 of sliding sleeve 15 aligns with the space 20 of bearing sleeve 8.
The external diameter of the support shoulder 22 of bearing sleeve 8 is corresponding to the external diameter of the support shoulder 23 of sliding sleeve 15 and the internal diameter of sliding cam 5.
Sliding cam 5 is by especially consisting of grooves and be connected in locking manner with sliding sleeve 15 force closures and shape by sliding cam 5 being pressed on the sliding sleeve 15 at the support shoulder 23 of described sliding sleeve, be that its mode is, described sliding cam can not in a circumferential direction relatively described sliding sleeve rotation of relatively described in the axial direction sliding sleeve slip.
As already mentioned, in order to carry out sliding cam shown in Figure 15 endwisely slipping on camshaft 1, actuator 12 and sliding cam 5 interaction effects, that is to say one of groove 14 interaction effect of one of pin 13 and the slideway part 9 of sliding cam 5, wherein sliding cam 5 actual endwisely slipping on camshaft 1 provides by sliding sleeve 15.For make described sliding sleeve 15 when its after camshaft 1 endwisely slips its in stop on the relative axial position of camshaft 1 and therefore make sliding cam 5 its with respect to a relative position of the air intake valve 4 that will be handled on stop, described valve actuator has a braking device 24(especially referring to Fig. 2).
For be manufactured among Fig. 1 to 4 with shown in the different diagrams valve actuator was proposed is, a camshaft 1 with an external tooth part 18 at first is provided, similarly provides with a plurality of bearing sleeves 8 of an interior toothed portion with a plurality of sliding sleeves 15 and the sliding cam 5 of an interior toothed portion.
Then on the camshaft 1 a clutch shaft bearing sleeve 8 is being positioned on the camshaft 1, described clutch shaft bearing sleeve provides a so-called cam spindle nose 29 simultaneously, and is connected by compressing with camshaft 1 force closure ground.
Then a sliding sleeve 15 with interior toothed portion 19 is pushed on the external tooth part 18 of camshaft 1, and makes the to axial position stop of described sliding sleeve on camshaft 1 by the braking device 24 of a correspondence.
Then another bearing sleeve 8 is set and comes force closure ground that this bearing sleeve is fixed on the camshaft 1 by extruding at camshaft 1.Repeat bearing sleeve 8 and this location that replace of sliding sleeve 15 on camshaft 1, until all sliding sleeves 15 and bearing sleeve 8 are positioned on the corresponding camshaft 1.
Then make pre-installation like this have the camshaft 1 of bearing sleeve 8 and sliding sleeve 15 in the zone of the outer peripheral surface of bearing sleeve 8 and sliding sleeve 15, to experience final finished processing, for example by a kind of abrasive machining.Eliminate thus the degree of eccentricity in the zone of bearing sleeve 8 and sliding sleeve 15.
Then in the zone of sliding sleeve 15, namely support in the zone of shoulder 23 at it, preferably consist of a plurality of grooves by roll extrusion (Rollieren), in the zone of supporting shoulder 23, pile up material thus.
Then by axial promotion corresponding sliding sleeve 15 arrange a sliding cam 5 and with its extruding, so wherein in roll extrusion or when consisting of these grooves material that pile up, sliding sleeve 15 be received in the sliding cam 5 and consist of betwixt a kind of force closure and the sealed connection of shape.
Because sliding cam 5 shifted onto when establishing on the reeded sliding sleeve 15 also in a footpath of sliding sleeve 15 upwards piles up material in the zone of inner face, so in the zone of bearing sleeve 8, formed flat 20.
Because install and to carry out since an axial side, so need only have such bearing sleeve 8 in an axial side of each sliding cam 5: this bearing sleeve 8 has flat 20 in its lateral parts 17 by the correspondence of sliding cam 5 axially encloses the zone of the part of holding slidably.At the opposed opposite side of sliding cam 5, bearing sleeve 8 is axially enclosed on the appropriate section of holding by corresponding part 17 by sliding cam 5 slidably at it, can not have such flat 20 for corresponding sliding cam 5.
Add man-hour in that the bearing sleeve 8 on the camshaft 1 after being arranged on pre-installation and sliding sleeve 15 are carried out final finished, also carry out flat 20,21 and support shoulder 22,23 processing.
Install or make finish after, sliding cam 5 is permanently connected with sliding sleeve 15 and is bearing in slidably on the bearing sleeve 8 with the degree of eccentricity of minimum.
Sliding cam 5 can axially slide on camshaft 1 with respect to camshaft 1 and bearing sleeve 8 by sliding sleeve 15.The stop member that sliding cam 5 does not illustrate in can a figure by sliding sleeve 15 is positioned on the bearing sleeve 8 in the corresponding final position exactly.
Valve actuator according to the present invention allows to center exactly and the moment of torsion transmission on the sliding cam 5.Because different component combinations participates in providing center function and moment of torsion propagation function, thus can design individually corresponding parts with respect to needs, thus can reduce valve actuator to the susceptibility of tolerance.In addition, also guarantee to make simply described valve actuator.
Reference list
1 camshaft
2 camshaft bearings
3 camshaft bearings
4 air intake valves
5 sliding cams
6 bearing ring bodies
7 bearing caps
8 bearing sleeves
9 slideway parts
10 cam portions
11 cam rails
12 actuators
13 pins
14 grooves
15 sliding sleeves
16 parts
17 parts
18 external tooth parts
19 interior toothed portions
20 flats
21 flats
22 support shoulder
23 support shoulder
24 braking device
25 cross-drilled holes
26 spring elements
27 stop pearls
28 stop depression
29 cam spindle noses
Claims (8)
1. valve actuator that is used for multi-cylinder engine, wherein in order to handle a plurality of ventilation valves of this internal-combustion engine, at least one is set rotatably is supported on camshaft bearing (2,3) camshaft in (1), this camshaft is with at least one axial sliding cam (5) slidably on corresponding camshaft (1), wherein so support corresponding sliding cam (5): although so that corresponding sliding cam (5) has axially slidably property with respect to corresponding camshaft (1), but guarantee on the one hand a kind of effect of centering of corresponding sliding cam (5), and another side guarantees to the moment of torsion transmission of corresponding sliding cam (5), it is characterized in that
A) corresponding sliding cam (5) by one on corresponding camshaft (1) axially slidably sliding sleeve (15) so axially be bearing in slidably on the corresponding camshaft (1) so that see diametrically be positioned between corresponding camshaft (1) and the corresponding sliding cam (5) and the intermediate portion of seeing in the axial direction (16) of corresponding sliding cam (5) upward and this corresponding sliding sleeve (15) of being permanently connected of this sliding cam play to the effect of corresponding sliding cam (5) transmitting torque;
B) corresponding sliding cam (5) by its in the axial direction read fortune for corresponding sliding sleeve (15) lateral parts of projection (17) laterally, with respect to these camshaft bearings (2,3) the bearing sleeve (8) that axially is not fixed on slidably on this camshaft (1) axially is bearing on these bearing sleeves (8) slidably, and these bearing sleeves are used for corresponding sliding cam (5) is centered.
2. valve actuator as claimed in claim 1, it is characterized in that, this camshaft (1) with external tooth part (18) corresponding sliding sleeve (15) with an interior toothed portion (19), wherein, toothed portion (18 during these are coupled to each other, 19) this camshaft (1) corresponding sliding sleeve (15) is provided thus axially property and the axially property slidably of corresponding sliding cam (5) is provided slidably, and provide from corresponding camshaft (1) by the moment of torsion transmission of corresponding sliding sleeve (15) to corresponding sliding cam (5).
3. valve actuator as claimed in claim 1 or 2 is characterized in that, these bearing sleeves (8) especially upward are connected with corresponding camshaft (1) force closure ground by it being pressed on corresponding camshaft (1).
4. valve actuator as claimed in claim 1 or 2, it is characterized in that, by a braking device (24), corresponding sliding sleeve (15) can be stopped at it on the relative axial position on the corresponding camshaft (1) when it camshaft (1) endwisely slips after, thereby and corresponding sliding cam (5) can be stopped at its with respect to one will the relative axial position of operated air intake valve on.
5. valve actuator as claimed in claim 4, it is characterized in that being executed in the through hole (27) that loaded a plurality of stop pearls (27) are received in corresponding camshaft and for the corresponding sliding sleeve of stop (15) on corresponding camshaft by spring of this braking device is coupled in a plurality of brakings depressions (28) of corresponding sliding sleeve.
6. valve actuator as claimed in claim 1 or 2, it is characterized in that, these bearing sleeves (8) and this sliding sleeve (15) have respectively a plurality of flats (20 on an one excircle, 21), these flats in this excircle upper control limit a plurality of support shoulders (22,23), wherein the in a circumferential direction read fortune of these flats (20) of these bearing sleeves (8) is staggered for these flats (21) of this sliding sleeve (15).
7. valve actuator as claimed in claim 6, it is characterized in that the external diameter of the support shoulder (22) of these bearing sleeves (8) is corresponding to the external diameter of the support shoulder (23) of corresponding sliding sleeve (15) and the internal diameter of corresponding sliding cam (5).
8. valve actuator as claimed in claim 6, it is characterized in that corresponding sliding cam (5) is especially by supporting shoulders (23) a plurality of grooves of formation and be pressed to corresponding sliding sleeve (15) by corresponding sliding cam (5) to come up and be connected in locking manner with (15) force closure of corresponding sliding sleeve and shape at these of corresponding sliding sleeve (15).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011001711.9 | 2011-03-31 | ||
| DE102011001711.9A DE102011001711B4 (en) | 2011-03-31 | 2011-03-31 | Valve train for an internal combustion engine and method of manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202810984U true CN202810984U (en) | 2013-03-20 |
Family
ID=46844653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201309428U Expired - Fee Related CN202810984U (en) | 2011-03-31 | 2012-03-30 | Air valve driving device of internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR200467402Y1 (en) |
| CN (1) | CN202810984U (en) |
| DE (1) | DE102011001711B4 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587354A (en) * | 2014-11-12 | 2016-05-18 | 保时捷股份公司 | Supporting structure of switching camshaft |
| CN105587355A (en) * | 2014-11-12 | 2016-05-18 | 保时捷股份公司 | Switching camshaft and arrangement of drivable accommodation part of switching camshaft |
| CN107076290A (en) * | 2014-11-07 | 2017-08-18 | 蒂森克虏伯普利斯坦技术中心股份公司 | Camshaft with axially guiding sliding members |
| CN107075986A (en) * | 2014-11-07 | 2017-08-18 | 蒂森克虏伯普利斯坦技术中心股份公司 | Include the camshaft of axially guiding sliding members |
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|---|---|---|---|---|
| DE102011103544A1 (en) * | 2011-06-08 | 2012-12-13 | Schaeffler Technologies AG & Co. KG | Storage of a camshaft |
| KR101438622B1 (en) * | 2012-12-28 | 2014-09-15 | 현대자동차 주식회사 | Variable valve lift device |
| DE102013103338A1 (en) * | 2013-04-03 | 2014-10-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine |
| KR101468640B1 (en) | 2014-04-02 | 2014-12-04 | 주식회사 미보기아 | Manufacturing method of sliding cam assembly and assembling method of cam shaft assembly including sliding cam and fixed cam |
| DE102014014659B3 (en) | 2014-10-08 | 2016-01-14 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Cylinder head of an internal combustion engine with at least one camshaft |
| JP6688132B2 (en) * | 2016-03-31 | 2020-04-28 | 本田技研工業株式会社 | Variable valve device |
| DE102016208968A1 (en) | 2016-05-24 | 2017-11-30 | Thyssenkrupp Ag | Sliding module of a camshaft |
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| DE19519048A1 (en) * | 1995-05-24 | 1996-11-28 | Hermann Prof Dr Ing Krueger | Lift valve drive for internal combustion engines |
| DE19611641C1 (en) | 1996-03-25 | 1997-06-05 | Porsche Ag | Valve operating cam drive for combustion engines |
| DE19908286B4 (en) | 1999-02-26 | 2007-03-01 | Dr.Ing.H.C. F. Porsche Ag | Variable valve control for internal combustion engines |
| DE102007027979B4 (en) | 2007-06-19 | 2015-07-23 | Audi Ag | Valve train for gas exchange valves of an internal combustion engine with camshaft tunnel bearings |
| DE102008005639B4 (en) * | 2008-01-23 | 2021-10-21 | Daimler Ag | Valvetrain device |
| DE102008024876B4 (en) * | 2008-05-23 | 2019-05-16 | Audi Ag | Valve drive for gas exchange valves of an internal combustion engine with displaceable cam carriers mounted on the front side |
| DE102008035935A1 (en) * | 2008-07-31 | 2010-02-11 | Audi Ag | Toothed shaft connection and valve drive with toothed shaft connection between a camshaft and displaceable cam carriers |
| DE102008064340A1 (en) * | 2008-12-20 | 2010-06-24 | Audi Ag | Valve train for gas exchange valves of internal-combustion engine, has base camshaft comprising cylindrical shaft sections between adjacent external gearing sections, and cam carriers radially guided on one of cylindrical shaft sections |
| DE102009022657A1 (en) * | 2009-05-26 | 2011-01-05 | Audi Ag | Camshaft for valve train of internal-combustion engine, has cam carrier axially supported on base shaft in relocatable manner and comprising internal teeth cooperated with external teeth, where teeth are made of fiber-reinforced plastic |
-
2011
- 2011-03-31 DE DE102011001711.9A patent/DE102011001711B4/en active Active
-
2012
- 2012-03-30 CN CN2012201309428U patent/CN202810984U/en not_active Expired - Fee Related
- 2012-03-30 KR KR2020120002573U patent/KR200467402Y1/en active IP Right Grant
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076290A (en) * | 2014-11-07 | 2017-08-18 | 蒂森克虏伯普利斯坦技术中心股份公司 | Camshaft with axially guiding sliding members |
| CN107075986A (en) * | 2014-11-07 | 2017-08-18 | 蒂森克虏伯普利斯坦技术中心股份公司 | Include the camshaft of axially guiding sliding members |
| US10202877B2 (en) | 2014-11-07 | 2019-02-12 | Thyssenkrupp Presta Teccenter Ag | Camshaft having an axially guided sliding element |
| CN107076290B (en) * | 2014-11-07 | 2019-07-02 | 蒂森克虏伯普利斯坦技术中心股份公司 | Camshaft with axially guiding sliding members |
| CN107075986B (en) * | 2014-11-07 | 2019-09-17 | 蒂森克虏伯普利斯坦技术中心股份公司 | Camshaft including axially guiding sliding members |
| CN105587354A (en) * | 2014-11-12 | 2016-05-18 | 保时捷股份公司 | Supporting structure of switching camshaft |
| CN105587355A (en) * | 2014-11-12 | 2016-05-18 | 保时捷股份公司 | Switching camshaft and arrangement of drivable accommodation part of switching camshaft |
Also Published As
| Publication number | Publication date |
|---|---|
| KR200467402Y1 (en) | 2013-06-14 |
| DE102011001711B4 (en) | 2023-06-07 |
| DE102011001711A1 (en) | 2012-10-04 |
| KR20120007016U (en) | 2012-10-10 |
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