CN103032121B - Internal combustion engine and valve drive unit thereof - Google Patents
Internal combustion engine and valve drive unit thereof Download PDFInfo
- Publication number
- CN103032121B CN103032121B CN201210377629.9A CN201210377629A CN103032121B CN 103032121 B CN103032121 B CN 103032121B CN 201210377629 A CN201210377629 A CN 201210377629A CN 103032121 B CN103032121 B CN 103032121B
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- sliding
- camshaft
- actuator
- cam
- coupling device
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- 238000002485 combustion reaction Methods 0.000 title abstract description 10
- 230000008878 coupling Effects 0.000 claims description 82
- 238000010168 coupling process Methods 0.000 claims description 82
- 238000005859 coupling reaction Methods 0.000 claims description 82
- 239000002360 explosive Substances 0.000 claims description 25
- 238000009423 ventilation Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- F01L1/053—Camshafts overhead type
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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
- F01L2001/0471—Assembled camshafts
- F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
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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 Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention relates to an internal combustion engine and a valve drive unit thereof. The internal combustion engine comprises a plurality of cylinders. At least one cam shaft is rotatably supported in order to operate ventilating valves of the cylinders of a cylinder set, and one sliding cam allowing axial sliding is arranged on the cam shaft corresponding to each cylinder. A common actuator (7) is provided for all the sliding cams (2a, 2b, 2c) so that the sliding cams (2a, 2b, 2c) supported on the cam shaft (1) in an axially slidable manner can slide axially.
Description
Technical field
The present invention relates to a kind of explosive motor.In addition, the invention still further relates to a kind of valve actuator for explosive motor.
Background technique
In explosive motor, in order to the charge movement in Optimizing Combustion room, have employed variable valve actuator, different valve lifts can be set at the ventilation valve place of explosive motor thus.By the known a kind of valve actuator of DE 19611641C1, ventilation valve can be handled with multiple different lifting curve thus.In addition, a sliding cam is supported on camshaft without still axial with the relative rotation slidably by multiple cam rail, this sliding cam has a lift profile, and a pin-shaped actuator is coupled in this profile to produce sliding axially of this sliding cam.Sliding axially by sliding cam, can set different valve lifts at corresponding ventilation valve place.Sliding cam at it relative to after the sliding axially of camshaft, can be stopped in the following way on its relative axial position on camshaft: depend on this relative axial position, received and be supported on the detent balls that at least one spring in camshaft exerts pressure and be coupled at least one locking groove, this locking groove is formed on the built-in face of a radial direction of this sliding cam.According to prior art, formed for a locking device locking the relative axial position of this sliding cam on the camshaft coefficient detent balls of stop recess by the lock recess of this movable cam and at least one and this sliding cam.
By the known a kind of explosive motor with valve actuator of DE 102007027979A1, its locking device is made up of two stopping elements, namely there is first stopping element and at least one second stopping element of multiple stop recess, this first stopping element is the parts of this sliding cam and can moves axially relative to camshaft together with this sliding cam, and this second stopping element is the detent balls that spring is exerted pressure.According to DE 102007027979A1, the second stopping element that this or each spring are exerted pressure is not received in camshaft, but is received in the tunnel construction sections of a tunnel bearing of each camshaft.
The common ground of the explosive motor known by prior art or the valve actuator of explosive motor is, can there is an independent actuator by sliding cam in axial sliding for each.Cause relatively high structure on the one hand thus to expend, the construction space that this type of solution requirement is relatively large on the other hand also causes relatively large weight.
Summary of the invention
The object of the invention is, the explosive motor described in improvement and described valve actuator, thus reduce its structure and expend and installing space required for reducing.
This object is realized by explosive motor according to the present invention and valve actuator according to the present invention.
According to the present invention, a kind of explosive motor is proposed, it has multiple cylinder, wherein, in order to handle the ventilation valve of multiple cylinders of a cylinder group, the camshaft that at least one rotatably supports is provided with, on this camshaft for each cylinder arrangement have one can sliding cam in axial sliding, wherein, a shared actuator is provided with for these sliding cams, slides axially to make these sliding cams that can be supported on axially slidably on this corresponding camshaft.
According to the present invention, a kind of valve actuator for explosive motor is also proposed, this valve actuator has at least one camshaft rotatably supported, for handling the ventilation valve of multiple cylinders of a cylinder group, on this camshaft for each cylinder arrangement have one can sliding cam in axial sliding, wherein, a shared actuator is provided with for these sliding cams, slides axially to make these sliding cams that can be supported on axially slidably on this corresponding camshaft.
According to the present invention, in order to realize being supported on sliding axially of the sliding cam on corresponding camshaft axially slidably, a shared actuator is provided with to these sliding cams.
By the present invention, first propose at this, a camshaft, be handled by a shared actuator for handling the sliding cam of the multiple cylinders in a cylinder group.Thus, hinge structure, decreases the quantity of required actuator.The weight that the lower constructivity which results in this explosive motor or valve actuator expends, reduce and the installing space of reduction.
According to a favourable improvement project of the present invention, one of sliding cam of corresponding camshaft has a chute part, this chute part is formed in the groove on the outer surface of this chute part with at least one, this actuator and this groove acting in conjunction are to cause sliding axially of this sliding cam, wherein, other sliding cams of corresponding camshaft were coupled with the coefficient sliding cam of actuator by chute part through a coupling device and this.According to this favourable improvement project of the present invention, one of sliding cam of this camshaft is manipulated directly by this actuator shared and slides thus, and wherein, the manipulation of other sliding cams and slip are carried out indirectly by this coupling device.This solution is simple and reliable.
According to the second favourable improvement project of the present invention, these sliding cams of corresponding camshaft are coupled by a coupling device, wherein, and this this coupling device actuator-operated and handle these sliding cams by this coupling device.According to this second favourable improvement project of the present invention, this actuator is manipulated this coupling device directly and is indirectly handled these sliding cams by this coupling device.This improvement project is also constructively simple and reliable.
Accompanying drawing explanation
Other characteristic sum Feature Combination draws by the following description.Specific embodiment of the present invention carries out showing and explaining in detail in the following description in the accompanying drawings simplifiedly.Shown in figure:
The stereogram of the first embodiment of Fig. 1 internal combustion engine valve drive unit;
The decomposition diagram of the valve actuator of Fig. 2 Fig. 1;
The detailed drawing of the valve actuator of Fig. 3 Fig. 1;
First state of the valve actuator of Fig. 4 Fig. 1 to Fig. 3;
Second state of the valve actuator of Fig. 5 Fig. 1 to Fig. 3;
The third state of the valve actuator of Fig. 6 Fig. 1 to Fig. 3;
4th state of the valve actuator of Fig. 7 Fig. 1 to Fig. 3;
5th state of the valve actuator of Fig. 8 Fig. 1 to Fig. 3;
The stereogram of the second embodiment of Fig. 9 internal combustion engine valve drive unit; And
The detailed drawing of the valve actuator of Figure 10 Fig. 9.
Embodiment
Fig. 1 to Fig. 8 illustrates the different views according to the present invention first variant and the details of an internal combustion engine valve drive unit.
So the valve actuator of Fig. 1 to Fig. 8 comprises a camshaft 1, this camshaft is supported on an explosive motor cylinder head do not shown by the camshaft bearing that is not shown.This type of a cylinder head can be made up of a cylinder head lower component (Zylinderkopfunterteil) and a camshaft case, and wherein cylinder head lower component and camshaft case also can integrally be implemented.
The camshaft 1 shown in Fig. 1 to Fig. 8 is preferably an admission cam shaft, the explosive motor intake valve of this admission cam shaft for controlling not show equally with the roller drawbar do not shown.There is an exhaust cam shaft do not shown, for controlling the internal combustion engine exhaust gas door do not shown.The intake valve of explosive motor and exhaust valve are the ventilation valve of this explosive motor.
Each cylinder of explosive motor preferably arranges two intake valves and two exhaust valves.Intake valve is controllably handled in a known manner by admission cam shaft.Exhaust valve is controllably handled in a known manner by exhaust cam shaft.
The camshaft 1 shown in FIG is embodied as admission cam shaft, and it have received multiple sliding cam 2a, 2b and 2c.Sliding cam 2a, 2b and 2c can not with the relative rotation but can be received in axially slidably on camshaft 1.
In an illustrated embodiment, sliding cam 2a, 2b and 2c have two cam portions 3 separately, and wherein each cam portion 3 provides three cam rails 4, can set different valve lifts by these cam rails.Like this, each sliding cam 2a, 2b and 2c have a cam portion 3 with multiple cam rail 4 for the ventilation valve will handled by this sliding cam.
In embodiment shown in Fig. 1 to Fig. 8, one of these sliding cams, are sliding cam 2b in an illustrated embodiment, also comprise a chute part 5 be positioned between these cam portions 3 except cam portion 3.A surface of chute part 5 defines at least one groove 6, and this groove, along camshaft 1 and the acting in conjunction of an actuator 7, slides in the axial direction to make this sliding cam 2b.Actuator 7 has an actuator pin do not shown in detailed drawing, this actuator pin can be directed in the groove 6 of the chute part 5 of sliding cam 2b, and because sliding cam 2b realizes sliding cam 2b sliding axially on camshaft 1 relative to the rotation of fixing actuator 7 under state after importing.
Acting in conjunction between the groove 6 of the chute part 5 of the actuator pin that of actuator 7 is such and a sliding cam is common for those skilled in the art.
In order to be positioned at moving axially of sliding cam 2a, 2b and 2c on the camshaft 1 shown in Fig. 1 to Fig. 8, for they are jointly configured with this actuator 7, like this, be not to attach troops to a unit an independently actuator for each sliding cam 2a to 2c, but the effect making to be positioned at all sliding cam 2a to 2c on camshaft 1 and move axially born by shown actuator 7.
In embodiment shown in Fig. 1 to Fig. 8, shown actuator 7 is directly born and sliding cam 2b is acted in axial sliding, and its mode is: the actuator pin do not shown of actuator 7 and be formed in sliding cam 2b chute part 5 among groove 6 acting in conjunction.In order to indirectly make other sliding cams 2a and 2c slide axially, there is a coupling device 8, direct slip that actuator 7 applies by this coupling device, sliding cam 2b is delivered on other sliding cam 2a and 2c.Sliding cam 2a and 2c is coupled by coupling device 8 with sliding cam 2b accordingly, and wherein coupling device 8 comprises a coupling bar 9.Coupling bar 9 is connected with sliding cam 2b securely by a conversion shift fork 10, this sliding cam directly can slide in the axial direction by actuator 7 on camshaft 1, and sliding axially of such sliding cam 2b causes sliding axially of the coupling bar 9 of coupling device 8.
In order to sliding cam 2b and sliding axially of coupling bar 9 are delivered on sliding cam 2a and 2c, for sliding cam 2a and 2c that each needs slide indirectly, a chute 11 is respectively had to be connected with the coupling bar 9 of coupling device 8, this chute and bump 12 acting in conjunction of attaching troops to a unit in corresponding other sliding cams 2a and 2c.The chute 11 of coupling device 8 has profile 13, the corresponding bump 12 of corresponding sliding cam 2a or 2c depends on the axial displacement of coupling device 8 when it is rotated by sliding cam 2a or 2c and slides along this chute, so and realize corresponding sliding cam 2a or 2c sliding axially on camshaft 1.
The bump 12 of sliding cam 2a and 2c is seen in a circumferential direction and is offset with respect to each, so as to ensure sliding cam 2a and 2c, (phasenverschobenes) of phase deviation slide axially.The sliding axially of sliding cam 2a and 2c is not only phase deviation each other, but also relative to can by actuator 7 directly phase deviation for sliding cam 2b in axial sliding.
From undertaken by actuator 7, the directly slide axially of sliding cam 2b, sliding axially of sliding cam 2a and 2c is carried out as follows indirectly by coupling device 8: the slip of sliding cam 2a and 2c was carried out in so-called cam base circle phase (Nockengrundkreisphase) period of the cam portion 3 of sliding cam 2a and 2c.The cam base circle of cam portion 3 extends in outside the region of cam portion 3 mutually, and the cam rail 4 for different cam extends in these cam portions.
Fig. 4 to Fig. 8 shows the working method of the valve actuator of Fig. 1 to Fig. 3, and wherein this valve actuator is shown as the initial position that actuator 7 is in non-starting state in the diagram.In this initial position, sliding cam 2a, 2b and 2c occupy a relative position limited on camshaft 1.On this relative position, by one of cam rail 4 of the cam portion 3 of sliding cam 2a to 2c, needing the ventilation valve handled to set a valve lift limited.
If need to change this valve lift now, then actuator 7 is started, its unshowned actuator pin extend in the groove 6 of the chute part 5 of sliding cam 2b like this, and the rotation of camshaft 1 and the rotation caused thus of sliding cam 2b can not located with the relative rotation on camshaft 1 cause sliding cam 2b axial displacement on camshaft 1, and wherein sliding cam 2b this axial displacement on camshaft 1 is represented by an arrow 14 in Figure 5.What this of sliding cam 2b was caused by actuator 7 slides axially, be coupled with the firm of coupling bar 9 of coupling device 8 by sliding cam 2b, result in sliding axially of coupling bar 9 similarly, wherein sliding axially of coupling bar 9 is illustrated by an arrow 15 in Figure 5.At this, chute 11 that be firmly connected with coupling bar 9, coupling device 8 also slides axially.
After this slides axially, sliding axially of sliding cam 2b is delivered on sliding cam 2a and 2c by phase deviation, to be namely first delivered on sliding cam 2a and subsequently on sliding cam 2c.
Fig. 6 shows, because camshaft 1, the rotation that represented by arrow 16, due to attach troops to a unit in sliding cam 2a, the sliding axially of chute 11 of the coupling device 8 and profile 13 causing the bump 12 of sliding cam 2a to rest on chute 11 moves along it, thus achieve represented by arrow 17 in the figure 7, the sliding axially of sliding cam 2a.
When camshaft 1 rotates further, so on the direction of the arrow 18 of Fig. 8, sliding cam 2c also slides axially on camshaft 1, namely on the one hand relative sliding in cam 2a phase deviation ground, slide relative to sliding cam 2b phase deviation on the other hand, namely in the following manner: the bump 12 of sliding cam 2c with attach troops to a unit in profile 13 acting in conjunction of the chute 11 of sliding cam 2c.
Therefore, in the embodiment of Fig. 1 to Fig. 8, one of these sliding cams of this camshaft 1, middle sliding cam 2b in an illustrated embodiment, directly with the acting in conjunction of actuator 7 under slid axially by actuator 7, wherein sliding axially of sliding cam 2b sequentially, phase deviation can be delivered on sliding cam 2a and 2c by coupling device 8, is namely first delivered on sliding cam 2a and is then delivered on sliding cam 2c.
Sliding axially of sliding cam 2b is directly undertaken by actuator 7, and sliding axially of sliding cam 2a and 2c is undertaken by coupling device 8 indirectly by actuator 7.
Fig. 9 and Figure 10 illustrates the internal combustion engine valve drive unit according to the present invention second variant, wherein hereafter in order to avoid unnecessary repetition, only introduces the difference of the embodiment of Fig. 9 and Figure 10 and the embodiment of Fig. 1 to Fig. 8.
In the embodiment of Fig. 9 and Figure 10, the coupling bar 9 of coupling device 8 manipulated directly by actuator 7, moves axially relative to camshaft 1 to make it.Sliding cam 2a, 2b and 2c are all slided indirectly by actuator 7 on camshaft 1, and namely by coupling device 8, its axial displacement is delivered on sliding cam 2a, 2b and 2c by this coupling device.
One of these sliding cams, be middle sliding cam 2b according to Fig. 9, bend (Schaltb ǖ gel) 10 by the conversion of coupling device 8 and be connected securely with coupling device 8, first the axial displacement of such coupling bar 9 be delivered on sliding cam 2b.Coupling bar 9 be delivered on sliding cam 2a and 2c with also sliding axially phase deviation therewith, namely also transmitted by the chute 11 of coupling device 8, wherein to attach troops to a unit separately at sliding cam 2a, the 2c in outside and have this type of a chute 11 for these two.
In the embodiment of Fig. 9 and Figure 10, sliding cam 2a, 2b and 2c all do not have chute part 5 in the embodiment of Fig. 1 to Fig. 8, that have groove 6.But sliding cam 2a to 2c only has the cam portion 3 of strap cam track 4.
In order to ensure sliding cam so-called cam base circle mutually in slide axially, according to Figure 10, be positioned with in camshaft 1 one can not relative to camshaft 1 rotate slip safety bar (Verschiebesicherungsstange) 19.Slip safety bar 19 is provided with a chute part 20, and this chute part is positioned within camshaft 1 together with slip safety bar 19, is namely concentrically positioned within camshaft 1.As already explained, slip safety bar 19 is fixing for the rotation of camshaft 1.
Sliding cam 2b attaches troops to a unit has an opening 21, bolt 22 to extend from radially outer through this opening, that is: bolt 22 1 aspect is through the opening 21 of sliding cam 2b, and is inserted in an elongated hole 23 of camshaft 1 at this.Wherein bolt 22 can from the different guiding profile acting in conjunction of the chute part 20 of slip safety bar 19, depend on the axial position that slip safety bar 19 occupies within camshaft 1 specifically.
Although slip safety bar 19 can not be positioned at the relative rotation in camshaft 1, but it can axial displacement within camshaft 1 together with the coupling bar 9 of coupling device 8, slip safety bar 19 is coupled with the coupling bar 9 of coupling device 8 for this reason, make by actuator 7, coupling bar 9 also has slip safety bar 19 side by side to slide axially.
The chute part 20 of slip safety bar 19 only allows this sliding cam to slide on camshaft 1 during the so-called cam base circle of sliding cam 2b mutually.
The common ground of these two embodiments of Fig. 1 to Fig. 8 and Fig. 9 to Figure 10 is, in order to the sliding axially of sliding cam of a camshaft 1, there is a shared actuator 7.Required actuator quantity can be reduced thus.This causes that less structure of explosive motor or internal combustion engine valve drive unit expends, less weight, the installing space of reduction and less cost.
Reference mark inventory
1 camshaft
2a sliding cam
2b sliding cam
2c sliding cam
3 cam portions
4 cam rails
5 chute parts
6 grooves
7 actuators
8 coupling devices
9 coupling bars
10 conversion shift forks
11 chutes
12 bolts
13 profiles
14 slide axially
15 slide axially
16 rotate
17 slide axially
18 slide axially
19 slip safety bars
20 chute parts
21 openings
22 bolts
23 elongated holes
Claims (9)
1. explosive motor, there is multiple cylinder, wherein, in order to handle the ventilation valve of multiple cylinders of a cylinder group, be provided with at least one camshaft rotatably supported (1), on this camshaft for each cylinder arrangement have one can sliding cam (2a in axial sliding, 2b, 2c), it is characterized in that, for these sliding cams (2a, 2b, 2c) be provided with a shared actuator (7), to make to be supported on these sliding cams (2a on corresponding this camshaft (1) axially slidably, 2b, 2c) slide axially, a sliding cam (2b) in these sliding cams of corresponding this camshaft (1) has a chute part (5), this chute part is formed in the groove (6) on the outer surface of this chute part (5) with at least one, this actuator (7) and this groove acting in conjunction, slide axially to make this sliding cam (2b), other sliding cams (2a of corresponding this camshaft (1), 2c) by a coupling device (8) be coupled with the coefficient described sliding cam (2b) of this actuator (7) by its chute part (5), it is characterized in that, this coupling device (8) comprises a coupling bar (9), this coupling bar is connected with the described sliding cam (2b) directly can slided by means of this actuator (7) securely by a conversion shift fork (10), and wherein, this coupling device (8) is for these other sliding cams (2a, each 2c) has a chute (10) be firmly connected with this coupling bar (9) respectively, this chute and other sliding cams (2a described in corresponding that attaches troops to a unit, bump (12) acting in conjunction 2c), indirectly to make other sliding cams (2a of this correspondence, 2c) slide axially.
2. explosive motor according to claim 1, is characterized in that, sees in a circumferential direction, and the bump (12) of these other sliding cams (2a, 2c) offsets with respect to each.
3. explosive motor, there is multiple cylinder, wherein, in order to handle the ventilation valve of multiple cylinders of a cylinder group, be provided with at least one camshaft rotatably supported (1), on this camshaft for each cylinder arrangement have one can sliding cam (2a in axial sliding, 2b, 2c), it is characterized in that, for these sliding cams (2a, 2b, 2c) be provided with a shared actuator (7), to make to be supported on these sliding cams (2a on corresponding this camshaft (1) axially slidably, 2b, 2c) slide axially, these sliding cams (2a of corresponding this camshaft (1), 2b, 2c) be coupled by a coupling device (8), and, this actuator (7) is handled this coupling device (8) and is handled these sliding cams (2a by this coupling device (8), 2b, 2c), it is characterized in that, this coupling device (8) comprises a coupling bar (9), this actuator (7) can directly make this coupling bar slide axially, wherein, this coupling bar is firmly connected indirectly to make this sliding cam slide by this actuator (7) and this coupling device (8) by a conversion shift fork (10) with a sliding cam (2b) in the described sliding cam of this corresponding camshaft, and wherein, this coupling device (8) is for other sliding cams (2a, each 2c) has a chute (10) be firmly connected with this coupling bar (9), this chute is attached troops to a unit in bump (12) acting in conjunction of other corresponding sliding cams with one, so that same other sliding cams (2a indirectly being made this correspondence by this actuator (7) and this coupling device (8), 2c) slide axially.
4. explosive motor according to claim 3, it is characterized in that, in camshaft (1), be positioned with a slip safety bar (19), but this slip safety bar can not reverse and can slide axially relative to this camshaft together with this coupling bar (9) relative to this camshaft.
5. for the valve actuator of explosive motor, this valve actuator has at least one camshaft rotatably supported (1), for handling the ventilation valve of multiple cylinders of a cylinder group, on this camshaft for each cylinder arrangement have one can sliding cam (2a in axial sliding, 2b, 2c), it is characterized in that, for these sliding cams (2a, 2b, 2c) be provided with a shared actuator (7), to make to be supported on these sliding cams (2a on corresponding this camshaft (1) axially slidably, 2b, 2c) slide axially, a sliding cam (2b) in these sliding cams of corresponding this camshaft (1) has a chute part (5), this chute part is formed in the groove (6) on the outer surface of this chute part (5) with at least one, this actuator (7) and this groove acting in conjunction, slide axially to make this sliding cam (2b), other sliding cams (2a of corresponding this camshaft (1), 2c) by a coupling device (8) be coupled with the coefficient described sliding cam (2b) of this actuator (7) by its chute part (5), it is characterized in that, this coupling device (8) comprises a coupling bar (9), this coupling bar is connected with the described sliding cam (2b) directly can slided by means of this actuator (7) securely by a conversion shift fork (10), and wherein, this coupling device (8) is for these other sliding cams (2a, each 2c) has a chute (10) be firmly connected with this coupling bar (9) respectively, this chute and other sliding cams (2a described in corresponding that attaches troops to a unit, bump (12) acting in conjunction 2c), indirectly to make other sliding cams (2a of this correspondence, 2c) slide axially.
6. valve actuator according to claim 5, is characterized in that, sees in a circumferential direction, and the bump (12) of these other sliding cams (2a, 2c) offsets with respect to each.
7. valve actuator according to claim 5, it is characterized in that, these sliding cams (2a of corresponding this camshaft (1), 2b, 2c) be coupled by a coupling device (8), and this actuator (7) is handled this coupling device (8) and is handled these sliding cams (2a by this coupling device (8), 2b, 2c).
8. valve actuator according to claim 7, it is characterized in that, this coupling device (8) comprises a coupling bar (9), this actuator (7) can directly make this coupling bar slide axially, wherein, this coupling bar is firmly connected indirectly to make this sliding cam slide by this actuator (7) and this coupling device (8) by a conversion shift fork (10) with a sliding cam (2b) in the described sliding cam of this corresponding camshaft, and wherein, this coupling device (8) is for other sliding cams (2a, each 2c) has a chute (10) be firmly connected with this coupling bar (9), this chute is attached troops to a unit in bump (12) acting in conjunction of other corresponding sliding cams with one, so that same other sliding cams (2a indirectly being made this correspondence by this actuator (7) and this coupling device (8), 2c) slide axially.
9. the valve actuator according to claim 7 or 8, it is characterized in that, in camshaft (1), be positioned with a slip safety bar (19), but this slip safety bar can not reverse and can slide axially relative to this camshaft together with this coupling bar (9) relative to this camshaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011054218.3 | 2011-10-06 | ||
| DE102011054218.3A DE102011054218B4 (en) | 2011-10-06 | 2011-10-06 | Internal combustion engine and valve train for an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103032121A CN103032121A (en) | 2013-04-10 |
| CN103032121B true CN103032121B (en) | 2015-05-06 |
Family
ID=47908591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210377629.9A Active CN103032121B (en) | 2011-10-06 | 2012-10-08 | Internal combustion engine and valve drive unit thereof |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP5490862B2 (en) |
| CN (1) | CN103032121B (en) |
| BR (1) | BR102012025503A2 (en) |
| DE (1) | DE102011054218B4 (en) |
| FR (1) | FR2981119B1 (en) |
| RU (1) | RU2524478C2 (en) |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012112795A1 (en) | 2012-12-20 | 2014-06-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine i.e. three cylinder internal combustion engine with valve drive, has sliding blocks mounted with rotation on displaceable pull rod and cooperate with segments |
| DE102013005803A1 (en) * | 2013-04-04 | 2014-10-09 | Daimler Ag | Valve train device for an internal combustion engine |
| US9441510B2 (en) | 2013-05-17 | 2016-09-13 | Mazda Motor Corporation | Valve system for a multi-cylinder engine |
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- 2012-10-05 JP JP2012222730A patent/JP5490862B2/en not_active Expired - Fee Related
- 2012-10-05 BR BR102012025503A patent/BR102012025503A2/en not_active Application Discontinuation
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Also Published As
| Publication number | Publication date |
|---|---|
| FR2981119A1 (en) | 2013-04-12 |
| JP2013083255A (en) | 2013-05-09 |
| RU2524478C2 (en) | 2014-07-27 |
| DE102011054218B4 (en) | 2023-03-23 |
| CN103032121A (en) | 2013-04-10 |
| DE102011054218A1 (en) | 2013-04-11 |
| FR2981119B1 (en) | 2016-09-30 |
| BR102012025503A2 (en) | 2016-03-29 |
| JP5490862B2 (en) | 2014-05-14 |
| RU2012141300A (en) | 2014-04-10 |
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