CN103061846B - Variable air intake valve different lift device of motor - Google Patents

Variable air intake valve different lift device of motor Download PDF

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Publication number
CN103061846B
CN103061846B CN201310029510.7A CN201310029510A CN103061846B CN 103061846 B CN103061846 B CN 103061846B CN 201310029510 A CN201310029510 A CN 201310029510A CN 103061846 B CN103061846 B CN 103061846B
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CN
China
Prior art keywords
cam
axle sleeve
ladder axle
gear shaft
core gear
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.)
Expired - Fee Related
Application number
CN201310029510.7A
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Chinese (zh)
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CN103061846A (en
Inventor
张士强
刘瑞林
刘伍权
戴俊
董素荣
包景阳
周广猛
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Tangshan University
Military Transportation University of PLA
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Tangshan University
Military Transportation University of PLA
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Priority to CN201310029510.7A priority Critical patent/CN103061846B/en
Publication of CN103061846A publication Critical patent/CN103061846A/en
Application granted granted Critical
Publication of CN103061846B publication Critical patent/CN103061846B/en
Expired - Fee Related legal-status Critical Current
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Abstract

A variable air intake valve different lift device of a motor comprises a stepped sleeve, a core gear shaft, an outer cam component, an inner cam component and a phase angle adjusting device. An end portion at one end of the core gear shaft which can be rotationally arranged in the stepped sleeve is aligned to a port portion at the front end of the stepped sleeve, and an end portion at the other end of the core gear shaft extends the a rear end port of the stepped sleeve. The outer cam component is fixedly sleeved on the periphery of the stepped sleeve. The inner cam component can be rotationally sleeved on the periphery of the stepped sleeve and fixedly connected with the core gear shaft in the stepped sleeve. The phase angle adjusting device is connected with the end, extending out of the stepped sleeve, of the core gear shaft and a cam in the outer cam component at the same end of the stepped sleeve. By the aid of a variable air intake valve different lifting method and the relative device, a pair of air intake cylinders of each cylinder is enabled to generate continuously variable different angles, so that air intake valve lift is changed to generate vortex and adjusting vortex, contradiction between an air movement organization and an air inflow coefficient is balanced, and performance of the motor can be comprehensively optimized.

Description

The device of the different lift of engine variable intake valve
Technical field
The present invention relates to a kind of motor.Particularly relate to the device of the adjustable different lift of engine variable intake valve of a kind of same cylinder two intake valve lift differences.
Background technique
For motor, there is the tissue being more conducive to combustion process in tumble and swirl simultaneously.But 4 air valve engines are arranged due to twin-inlet symmetrical configuration and are driven two cam profiles of intake valve almost consistent, as shown in Figure 1.Two intake valves are the same at synchronization opening degree, so that synchronization two intake valve intake velocities and air inflow identical, cancel out each other at cylinder body cross-sectional direction swirling eddy, in cylinder, the mass motion of air shows as and singlely longitudinal rolls stream mode, there is eddy current hardly, this causes the key factor that mixed Daqu is bad, worsen burning.Cylinder cover structure can be made complicated as adopted tangential air flue or rotating air flue acquisition eddy current, gas-flow resistance increases.When an intake valve is opened, another IC Intake Valve Closes can produce comparatively maelstrom, adopt sliding type variable air inflow structure, valve is set respectively in intake manifold also can produces eddy current, controlled vortex flow, but be all equivalent to reduce or truncation part gas-entered passageway, have impact on air inflow.And Honda motor adopts 3 stops VTEC, with three rocking arms and three actuated by cams, two valves, can eddy current be produced by primary and secondary intake valve lifting curve difference, promote burning.The variable cam mechanism similar with said mechanism also has the MIVEC mechanism of Mitsubishi company and the Vario-Cam etc. of Porsche company.But no matter these structures are that two intake cam lifts diminish or one of them intake cam lift diminishes simultaneously, obtain stronger eddy current to be equivalent to part and to close two valves or one of them valve, so but make negotiability poorer than two intake valve (or intake duct) standard-sized sheet, obtain high strength of vortex to sacrifice charge flow rate for cost, be only applicable to low-speed situations, during high speed, charge flow rate is not enough, needs two intake valve standard-sized sheets to ensure charge flow rate, but there is not eddy current.For overcoming the above problems, device and the correlation technique (ZL200510013859.7) of the different lift of patent of invention internal combustion engine intake valve propose the different lift technology of intake valve, as shown in Figure 2.But because motor emphasizes particularly on different fields to the requirement of eddy motion and the coefficient that circulates under different rotating speeds and load, the different lift method of intake valve but can not according to Operating condition adjustment eddy current.
Current engines distribution structure obtains the method for stronger eddy current, actual is that part closes two valves or one of them valve, or directly reduce the air inflow of one of them intake duct, so but make negotiability poorer than two intake valve (or intake duct) standard-sized sheet, obtain high strength of vortex to sacrifice charge flow rate for cost.
Summary of the invention
Technical problem to be solved by this invention is, provides one can improve gas flow characteristic in engine cylinder, realize to engine performance optimize comprehensively the device of the different lift of engine variable intake valve.
The technical solution adopted in the present invention is: the device of the different lift of a kind of engine variable intake valve, comprise: ladder axle sleeve, align with the port part of described ladder axle sleeve front end in ladder axle sleeve and the end of one end that is arranged on that can rotate, the core gear shaft of ladder axle sleeve back-end ports is stretched out in the end of the other end, the fixing external cam assembly being enclosed within ladder axle sleeve periphery, what can rotate is enclosed within ladder axle sleeve periphery and the cam ring assembly be fixedly connected with the described core gear shaft being positioned at ladder axle sleeve, the phase angle adjuster combined with this one end of core gear shaft of stretching out ladder axle sleeve and the external cam of external cam assembly that is arranged in this end of ladder axle sleeve respectively.
Described multidiameter shaft puts and is formed with multiple pin-and-hole for fixing external cam assembly, described external cam assembly includes front end cam, rearward end cam and more than one middle part outer shaft cam, wherein, described front end cam is by the first outer shaft locating stud and be positioned at the pin-and-hole on ladder axle sleeve front end and be fixed on the front port of ladder axle sleeve, described rearward end cam is by the second outer shaft locating stud and be positioned at the pin-and-hole in ladder axle sleeve rearward end and be fixed on the rear port of ladder axle sleeve, described more than one middle part outer shaft cam is respectively fixed on by a 3rd outer shaft locating stud and the corresponding pin-and-hole between ladder axle sleeve two ends respectively on multidiameter shaft cover.
The rear end of described rearward end cam is formed with the connecting sleeve for connecting phase angle adjuster, the inner peripheral surface of described connecting sleeve is formed with dextrorotation internal tooth.
Described multidiameter shaft puts, between front end cam and the middle part outer shaft cam adjacent with this front end cam, a bar hole is circumferentially formed between adjacent two middle part outer shaft cam and all along ladder axle sleeve between described rearward end cam and the middle part outer shaft cam adjacent with this rearward end cam, the core gear shaft being positioned at multidiameter shaft cover is being formed with pin-and-hole with each described bar hole corresponding section, the cam ring assembly be enclosed within ladder axle sleeve periphery includes and axis cam in described bar hole equal number, in each, axis cam is fixedly connected with described core gear shaft by an interior axle locating stud, described interior axle locating stud runs through the bar hole that multidiameter shaft puts, and can move along described bar hole and length direction.
Described stretch out the core gear shaft of ladder axle sleeve back-end ports this part on the outwardly left-handed gear be formed for combining with described phase angle adjuster, the port of this part of core gear shaft has been bolted to connection axially locating plate.
Described phase angle adjuster includes hydraulic adjuster structure and to be fixedly connected with described hydraulic adjuster structure with by circular connecting frame and external tooth cover in being driven by hydraulic adjuster structure, wherein, the outer circumferential face of described interior external tooth cover being formed with the right-hand teeth for being meshed with the dextrorotation internal tooth in the connecting sleeve on rearward end cam, the inner peripheral surface of described interior external tooth cover being formed with the left-hand teeth for being meshed with the left-handed gear on core gear shaft.
Described hydraulic adjuster structure includes: piston, the piston loop bar that one end and piston are bolted to connection, hydraulic pressure cylindrical shell, and be connected to front cover and the rear end cover of hydraulic pressure cylindrical shell rear and front end, wherein, described piston and piston loop bar are positioned at described hydraulic pressure cylindrical shell and can only moving axially along hydraulic pressure cylindrical shell, the other end of described piston loop bar run through described front cover and by circular connecting frame with described in external tooth cover be fixedly connected with, before the barrel of described hydraulic pressure cylindrical shell corresponds to described piston, an oilhole is respectively opened at rear two ends respectively, be fixedly connected with axially locating plate by bolt after this one end that described core gear shaft has a left-handed gear runs through the described center of piston loop bar and the center of piston successively, the outer peripheral portion of described axially locating plate is embedded in and is formed in groove by between described rear end cover and described hydraulic pressure cylindrical shell.
The device of the different lift of engine variable intake valve of the present invention, the different lift method of variable intake valve and relevant apparatus, make a pair intake cam of each cylinder can produce the different angle continuously changed, thus valve lift difference is changed and produces eddy current and adjustment eddy current, and then the contradiction in compensating cylinder between gas motion tissue and charge flow rate coefficient, realize the comprehensive optimization to engine performance simultaneously.
Accompanying drawing explanation
Fig. 1 is a kind of mode of execution of the different lift of existing intake valve;
Fig. 2 is the another kind of mode of execution of the different lift of existing intake valve;
Fig. 3 is a kind of mode of execution of the different lift of variable intake valve of the present invention;
Fig. 4 is the another kind of mode of execution of the different lift of variable intake valve of the present invention;
Fig. 5 is the overall structure schematic diagram of the device of the different lift of engine variable intake valve of the present invention;
Fig. 6 is the external structure schematic diagram of external cam shaft assembly of the present invention;
Fig. 7 is the internal structure schematic diagram of external cam shaft assembly of the present invention;
Fig. 8 is the structural representation of inner camshaft assembly of the present invention;
Fig. 9 is the structural representation of different angle regulating device of the present invention;
Figure 10 is the C-C cross-sectional configuration schematic diagram of Fig. 9.
In figure
1: external cam assembly 2: cam ring assembly
3: phase angle adjuster 4: the first outer shaft locating stud
5: front end cam 6: ladder axle sleeve
7: middle part outer shaft cam 8: the three outer shaft locating stud
9: rearward end cam 10: the second outer shaft locating stud
11: interior axis cam 12: interior axle locating stud
13: core gear shaft 14: interior axle locating stud
15: interior axis cam 16: axially locating plate
17: interior external tooth cover 18: piston loop bar
19: front cover 20: hydraulic pressure cylindrical shell
21: piston 22: rear end cover
23: bar hole 24: connecting sleeve
25: left-handed gear 26: circular connecting frame
27: intake cam 28: intake cam
Embodiment
Below in conjunction with embodiment and accompanying drawing, the device to the different lift of engine variable intake valve of the present invention is described in detail.
As shown in Figure 5, the device of the different lift of engine variable intake valve of the present invention, comprise: ladder axle sleeve 6, align with the port part of described ladder axle sleeve 6 front end in ladder the axle sleeve 6 and end of one end that is arranged on that can rotate, the core gear shaft 13 of ladder axle sleeve 6 back-end ports is stretched out in the end of the other end, the fixing external cam assembly 1 being enclosed within ladder axle sleeve 6 periphery, what can rotate is enclosed within ladder axle sleeve 6 periphery and the cam ring assembly 2 be fixedly connected with the described core gear shaft 13 being positioned at ladder axle sleeve 6, the phase angle adjuster 3 combined with this one end of core gear shaft 13 of stretching out ladder axle sleeve 6 and the external cam of external cam assembly 1 that is arranged in this end of ladder axle sleeve 6 respectively.
As Fig. 6, shown in Fig. 7, described ladder axle sleeve 6 is formed with multiple pin-and-hole for fixing external cam assembly 1, described external cam assembly 1 includes front end cam 5, rearward end cam 9 and more than one middle part outer shaft cam 7, wherein, described front end cam 5 is by the first outer shaft locating stud 4 and be positioned at the pin-and-hole on ladder axle sleeve 6 front end and be fixed on the front port of ladder axle sleeve 6, described rearward end cam 9 is by the second outer shaft locating stud 10 and be positioned at the pin-and-hole in ladder axle sleeve 6 rearward end and be fixed on the rear port of ladder axle sleeve 6, described more than one middle part outer shaft cam 7 is respectively fixed on ladder axle sleeve 6 by a 3rd outer shaft locating stud 8 and the corresponding pin-and-hole between ladder axle sleeve 6 two ends respectively.
The rear end of described rearward end cam 9 is formed with the connecting sleeve 24 for connecting phase angle adjuster 3, and the inner peripheral surface of described connecting sleeve 24 is formed with dextrorotation internal gear.
As shown in Figure 8, on described ladder axle sleeve 6, between front end cam 5 and the middle part outer shaft cam 7 adjacent with this front end cam 5, a bar hole 23 is circumferentially formed between adjacent two middle part outer shaft cam 7 and all along ladder axle sleeve 6 between described rearward end cam 9 and the middle part outer shaft cam 7 adjacent with this rearward end cam 9, the core gear shaft 13 being positioned at multidiameter shaft cover 6 is being formed with pin-and-hole with each described bar hole 23 corresponding section, the cam ring assembly 2 be enclosed within ladder axle sleeve 6 periphery includes and axis cam 11/15 in described bar hole 23 equal number, in each, axis cam 11/5 is fixedly connected with described core gear shaft 13 by an interior axle locating stud 12/14, namely in, axle locating stud 12/14 can realize the connection of interior crown of roll wheels and core gear shaft 13.Described interior axle locating stud 12/14 runs through the bar hole 23 on ladder axle sleeve 6, and can move along described bar hole 23 and length direction.That is, when core gear shaft 13 relatively rotates with ladder axle sleeve 6, bar hole 23 provides amounts of rotation, in order to avoid core gear shaft 13 and ladder axle sleeve 6 can not relatively rotate for interior axle locating stud 12/14.
Described stretch out the core gear shaft 13 of ladder axle sleeve 6 back-end ports this part on the outwardly left-handed gear 25 be formed for combining with described phase angle adjuster 3, the port of this part of core gear shaft 13 is bolted to connection axially locating plate 16, inner camshaft assembly 2 axial restraint that can ensure core gear shaft 13 and be fixedly connected with core gear shaft 13.
As shown in Figure 9, described phase angle adjuster 3 includes hydraulic adjuster structure and to be fixedly connected with described hydraulic adjuster structure with by circular connecting frame 26 and external tooth cover 17 in being driven by hydraulic adjuster structure, wherein, the outer circumferential face of described interior external tooth cover 17 is formed with the right-hand teeth for being meshed with the dextrorotation internal tooth in the connecting sleeve 24 on rearward end cam 9, right-hand teeth on outside dextrorotation internal gear in connecting sleeve 24 and interior external tooth cover 17 is axially moved, thus realizes ladder axle sleeve 6 and the rotation being fixedly connected on the external cam shaft assembly on ladder axle sleeve 6.The inner peripheral surface of described interior external tooth cover 17 is formed with the left-hand teeth for being meshed with the left-handed gear 25 on core gear shaft 13.Left-hand teeth on core gear shaft 13 in left-handed gear 25 structure and interior external tooth cover 17 does axial relative movement, thus realizes core gear shaft 13 and be fixed on the rotation of the inner camshaft assembly 2 on core gear shaft 13.
Described hydraulic adjuster structure includes: the piston loop bar 18 that piston 21, one end and piston 21 are bolted to connection, hydraulic pressure cylindrical shell 20, and be connected to front cover 19 and the rear end cover 22 of hydraulic pressure cylindrical shell 20 rear and front end, wherein, described piston 21 and piston loop bar 18 are positioned at described hydraulic pressure cylindrical shell 20 and can only moving axially along hydraulic pressure cylindrical shell 20, this is because be formed with guiding spline in hydraulic pressure cylindrical shell, spline structure is formed with, so piston loop bar and interior external tooth cover only axially move but do not rotate at piston sleeve bar.The other end of described piston loop bar 18 run through described front cover 19 and by circular connecting frame 26 with described in external tooth cover 17 be fixedly connected with, before the barrel of described hydraulic pressure cylindrical shell 20 corresponds to described piston 21, an oilhole E/F is respectively opened at rear two ends respectively, be fixedly connected with axially locating plate 16 by bolt after this one end that described core gear shaft 13 has a left-handed gear 25 runs through the described center of piston loop bar 18 and the center of piston 21 successively, the outer peripheral portion of described axially locating plate 16 is embedded in and is formed in groove by between described rear end cover 22 and described hydraulic pressure cylindrical shell 20.
As shown in Figure 10, interior external tooth cover 17 does displacement to axial with inner camshaft assembly, external cam shaft assembly, ladder axle sleeve 6 and core gear shaft 13, realizes the adjustment at often pair of different angle of intake cam, and then regulates valve lift poor, adjustment controlled vortex flow.
Therefore, as shown in Figure 3, Figure 4, by the device of the different lift of engine variable intake valve of the present invention, θ (claiming different angle) is achieved adjustable.
Different angle adjustment working principle (with reference to figure 8) of device of the different lift of engine variable intake valve of the present invention: hydraulic oil enters hydraulic adjuster structure from E mouth, promote piston driving piston loop bar to move right, thus interior external tooth cover is also moved right, piston loop bar and interior external tooth cover do not rotate owing to can only move axially, and core gear shaft left end coupling shaft is to positioning plate, so core gear shaft does not axially move, therefore, left-hand teeth in interior external tooth cover forces core gear shaft to rotate in the counterclockwise direction from left to right, namely inner camshaft assembly rotates counterclockwise together with core gear shaft, and the right-hand teeth outside interior external tooth cover makes external cam shaft assembly and ladder axle sleeve rotate clockwise, thus make just to have occurred angle between inner camshaft assembly and external cam shaft assembly, this angle is the different angle θ of rearward end cam 9 and interior axis cam 15, interior external tooth cover more moves right, different angle is larger, in like manner, when hydraulic oil enters from F mouth, in promoting, external tooth cover is moved to the left, left-hand teeth in it in external tooth cover is moved to the left along core gear shaft, tilt due to the left-hand teeth in interior external tooth cover but do not rotate, core gear shaft is forced to move in the direction of the clock from left to right, namely inner camshaft assembly rotates clockwise, and the right-hand teeth outside interior external tooth cover makes external cam shaft assembly rotate counterclockwise, make different contention decrescence little.So just can change two intake cam lifts according to Operating condition adjustment intake cam different angle θ poor and then change valve lift difference and adjust eddy current; Engage because the right-hand teeth in outside in the right-hand teeth in end cams 9 upper joint sleeve of the left-handed gear on the core gear shaft that is fixedly connected with inner camshaft assembly, external cam shaft assembly, interior external tooth cover and left-hand teeth remain mutually, when keeping E mouth identical with F mouth inlet hydraulic, interior external tooth cover can not move axially, so inner camshaft assembly and external cam shaft assembly do not relatively rotate, being at this moment equivalent to a camshaft can rotate simultaneously.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection of the present invention.

Claims (2)

1. the device of the different lift of engine variable intake valve, it is characterized in that, comprise: ladder axle sleeve (6), align with the port part of described ladder axle sleeve (6) front end in ladder axle sleeve (6) and the end of one end that is arranged on that can rotate, the core gear shaft (13) of ladder axle sleeve (6) back-end ports is stretched out in the end of the other end, the fixing external cam assembly (1) being enclosed within ladder axle sleeve (6) periphery, what can rotate is enclosed within ladder axle sleeve (6) periphery and the cam ring assembly (2) be fixedly connected with the core gear shaft (13) being positioned at ladder axle sleeve (6), the phase angle adjuster (3) combined with core gear shaft (13) this one end of stretching out ladder axle sleeve (6) and the external cam of external cam assembly (1) that is arranged in ladder axle sleeve (6) this end respectively, described ladder axle sleeve (6) is formed with multiple pin-and-hole for fixing external cam assembly (1), described external cam assembly (1) includes front end cam (5), rearward end cam (9) and more than one middle part outer shaft cam (7), wherein, described front end cam (5) is fixed on the front port of ladder axle sleeve (6) by the first outer shaft locating stud (4) and the pin-and-hole that is positioned on ladder axle sleeve (6) front end, described rearward end cam (9) is fixed on the rear port of ladder axle sleeve (6) by the second outer shaft locating stud (10) and the pin-and-hole that is positioned in ladder axle sleeve (6) rearward end, described more than one middle part outer shaft cam (7) is respectively respectively fixed on ladder axle sleeve (6) by a 3rd outer shaft locating stud (8) and the corresponding pin-and-hole that is positioned between ladder axle sleeve (6) two ends, the rear end of described rearward end cam (9) is formed with the connecting sleeve (24) for connecting phase angle adjuster (3), the inner peripheral surface of described connecting sleeve (24) is formed with dextrorotation internal tooth, described phase angle adjuster (3) includes hydraulic adjuster structure and to be fixedly connected with described hydraulic adjuster structure with by circular connecting frame (26) and external tooth cover (17) in being driven by hydraulic adjuster structure, wherein, the outer circumferential face of described interior external tooth cover (17) being formed with the right-hand teeth for being meshed with the dextrorotation internal tooth in the connecting sleeve (24) on rearward end cam (9), the inner peripheral surface of described interior external tooth cover (17) being formed with the left-hand teeth for being meshed with the left-handed gear (25) on core gear shaft (13).
2. the device of the different lift of engine variable intake valve according to claim 1, it is characterized in that, on described ladder axle sleeve (6), be positioned between front end cam (5) and the middle part outer shaft cam (7) adjacent with this front end cam (5), a bar hole (23) is circumferentially formed between adjacent two middle parts outer shaft cam (7) and all along ladder axle sleeve (6) between described rearward end cam (9) and the middle part outer shaft cam (7) adjacent with this rearward end cam (9), the core gear shaft (13) being positioned at multidiameter shaft cover (6) is all being formed with pin-and-hole with described bar hole (23) corresponding section, the cam ring assembly (2) be enclosed within ladder axle sleeve (6) periphery includes the interior axis cam (11/15) with described bar hole (23) equal number, in each, axis cam (11/15) is fixedly connected with described core gear shaft (13) by an interior axle locating stud (12/14), described interior axle locating stud (12/14) runs through the bar hole (23) on ladder axle sleeve (6), and can move along described bar hole (23) and length direction.
3. the device of the different lift of engine variable intake valve according to claim 1, it is characterized in that, described stretch out the core gear shaft (13) of ladder axle sleeve (6) back-end ports this part on the outwardly left-handed gear (25) be formed for combining with described phase angle adjuster (3), the port of core gear shaft (13) this part has been bolted to connection axially locating plate (16).
4. the device of the different lift of engine variable intake valve according to claim 1, it is characterized in that, described hydraulic adjuster structure includes: piston (21), the piston loop bar (18) that one end and piston (21) are bolted to connection, hydraulic pressure cylindrical shell (20), and be connected to front cover (19) and the rear end cover (22) of hydraulic pressure cylindrical shell (20) rear and front end, wherein, described piston (21) and piston loop bar (18) are positioned at described hydraulic pressure cylindrical shell (20) and can only moving axially along hydraulic pressure cylindrical shell (20), the other end of described piston loop bar (18) is run through described front cover (19) and is fixedly connected with described interior external tooth cover (17) by circular connecting frame (26), before the barrel of described hydraulic pressure cylindrical shell (20) corresponds to described piston (21), an oilhole (E/F) is respectively opened at rear two ends respectively, be fixedly connected with axially locating plate (16) by bolt after this one end that described core gear shaft (13) has a left-handed gear (25) runs through the described center of piston loop bar (18) and the center of piston (21) successively, the outer peripheral portion of described axially locating plate (16) is embedded in and is formed in groove by between described rear end cover (22) and described hydraulic pressure cylindrical shell (20).
CN201310029510.7A 2013-01-25 2013-01-25 Variable air intake valve different lift device of motor Expired - Fee Related CN103061846B (en)

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Application Number Priority Date Filing Date Title
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CN103323254B (en) * 2013-06-28 2016-01-20 中国人民解放军军事交通学院 The different lift of engine variable inlet valve different angle regulation experiment device
CN107462421B (en) * 2017-10-12 2023-04-11 河北工业大学 Rotatable valve experimental device of engine

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GB2375583B (en) * 2001-05-15 2004-09-01 Mechadyne Internat Plc Variable camshaft assembly
GB2423565A (en) * 2005-02-23 2006-08-30 Mechadyne Plc Inner camshaft of SCP assembly receives drive via sleeve on outer tube
GB2424256A (en) * 2005-03-16 2006-09-20 Mechadyne Ltd SCP assembly with spring mounted on camshaft rather than within phaser housing
DE102006041918A1 (en) * 2006-09-07 2008-03-27 Mahle International Gmbh Adjustable camshaft
WO2010033417A2 (en) * 2008-09-19 2010-03-25 Borgwarner Inc. Cam torque actuated phaser using band check valves built into a camshaft or concentric camshafts
CN102695852B (en) * 2009-12-07 2014-11-26 三菱自动车工业株式会社 Variable valve gear for internal combustion engine
CN203067051U (en) * 2013-01-25 2013-07-17 唐山学院 Variable inlet valve different lift device of engine

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