CN106285814A - A kind of VVT and the device of lift range variable - Google Patents
A kind of VVT and the device of lift range variable Download PDFInfo
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- CN106285814A CN106285814A CN201610938957.XA CN201610938957A CN106285814A CN 106285814 A CN106285814 A CN 106285814A CN 201610938957 A CN201610938957 A CN 201610938957A CN 106285814 A CN106285814 A CN 106285814A
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- eccentric
- camshaft
- axis
- gear
- rotation
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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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
-
- 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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34413—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using composite camshafts, e.g. with cams being able to move relative to the camshaft
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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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/348—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear by means acting on timing belts or chains
-
- 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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L2001/34486—Location and number of the means for changing the angular relationship
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention provides a kind of by motor-driven VVT with the device of lift range variable.Operation characteristic according to internal combustion engine and requirement, only by set of device, change while valve timing and lift can be realized, and with low cost, mechanism is reliable, quickly, degree of accuracy is high, all can fully tackle idling and cold start-up in response, can preferably mate with advanced technologies such as variable compression ratios (VCR), the most very likely cancel existing throttle mechanisms, it is important that install this device additional little to existing Structure of Internal-Combustion Engine amendment, the raising efficiency of internal combustion engine is had and the most significantly acts on.This device includes a camshaft drive, an eccentric hoop rotating mechanism and the reducing gear of a reverse movement transmission self-locking, by camshaft drive, the rotary motion of bent axle is changed into the rotary motion of camshaft, by reducing gear, little for the high speed of its built-in motor moment of torsion rotary motion is changed into low-speed big rotary motion, and drives eccentric hoop rotating mechanism to change timing and the lift of valve simultaneously.
Description
Technical field
The present invention relates to the device of a kind of internal-combustion engine variable valve timing and lift range variable, particularly relate to a kind of being suitable for
In all kinds of stroke piston combustion engine VVTs and the device of lift range variable.
Background technology
Hydraulic variable valve timing technology (Variable Valve Timing, hereinafter referred to as VVT) obtains in internal combustion engine
To extensively application, meanwhile, the device of lift range variable (Variable Valve Lift, hereinafter referred to as VVL) also begins to obtain
Application, improves engine performance and plays a significant role.Along with the cutting edge technologies such as VCR are goed deep into by Current internal combustion engines industry
Research, reaction is slow, precision is the highest, variable timing angle is little, cold start-up and idling due to it to find original hydraulically powered VVT
Operating mode is difficult to the existence of the problems such as operation, can not match with above-mentioned technology.
One both can change valve timing, can change again the device of valve stroke, will ideally with coordinating of above-mentioned technology
Solve many puzzlements of existing internal combustion engine.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of by motor-driven VVT
With the device of lift range variable (Electric Variable Valve Timing and Variable Valve Lift,
Hereinafter referred to as EVVTL).Operation characteristic according to internal combustion engine and requirement, only by set of device, can realize valve timing and liter
Change while journey, and with low cost, mechanism is reliable, and quickly, degree of accuracy is high, all can fully answer idling and cold start-up in response
Right, can preferably mate with cutting edge technologies such as VCR, the most very likely cancel existing throttle mechanisms, it is important that install additional
This device is little to existing Structure of Internal-Combustion Engine amendment, has the raising efficiency of internal combustion engine and the most significantly acts on.
The present invention is achieved through the following technical solutions:
A kind of changing valve timing and changing the device of valve stroke for internal combustion engine, comprising: camshaft actuated machine
Structure, eccentric hoop rotating mechanism and reducing gear, it is characterised in that:
Described camshaft drive includes camshaft sprocket, outer ring, support set, planetary gear and gear ring；
Camshaft sprocket and gear ring are fixedly installed on outer ring, and outer ring is rotatably installed on support set, support
Set is fixed on cylinder cap；Camshaft sprocket, gear ring, outer ring and the axis of four parts of support set or center of rotation Jun Yu center
Dead in line, when bent axle drive cam shaft sprocket wheel rotates, camshaft sprocket, gear ring and three, outer ring part are all driven, and make
It is around central axis synchronous rotary；
Planetary gear is fixedly installed to the front end of camshaft, its rotation axis and camshaft dead in line；Planetary gear
With gear ring internal messing, between the rotation axis of these two parts, there is centre-to-centre spacing L, when gear ring rotates around central axis, will drive
Dynamic planetary gear rotates around camshaft axis, and the camshaft being fixed together with planetary gear also revolves around cam shaft line locking
Turn, so far, complete bent axle and the rotation of camshaft is driven；
Described eccentric hoop rotating mechanism includes that at least one eccentric hoop, described eccentric hoop have inside and outside two peripheries,
There is between the axis of two periphery offset E, it is characterised in that described offset E is equal to planetary gear and tooth
Centre-to-centre spacing L between circle rotation axis, described eccentric hoop is rotatably socketed in camshaft journal and Cam bearing pedestal endoporus
Between, its inner periphery and camshaft journal sliding contact, its outer cylinder surface and Cam bearing pedestal endoporus sliding contact, connect
Sliding bearing both can be installed between contacting surface, it is also possible to rolling bearing is installed；
Cam bearing pedestal endoporus and the axis of eccentric hoop outer cylinder surface and central axes, therefore, the rotation of eccentric hoop
Turn and be only only defined in and rotate around central axis, be equal to centre-to-centre spacing L due to offset E again, so, described gear ring, planet tooth
Wheel, eccentric hoop, camshaft axis and central axis have set up a K-H-V planetary gear mechanism jointly；
The characteristics of motion according to K-H-V planetary gear mechanism:
When gear ring is driven in rotation, owing to meshing relation, planetary gear and camshaft are driven in rotation, now valve liter
Journey and timing angle all do not change；
When eccentric hoop is driven in rotation, on the one hand eccentric hoop will drive camshaft axis with offset E as radius, and edge is transported
Row track and eccentric hoop rotating Vortex, on the other hand due to gear ring and the intermeshing restriction relation of planetary gear so that planet
Gear is simultaneously around camshaft axis counter-rotating；
Camshaft axis changes camshaft relative to valve tappet or the distance of valve rocker along the movement of running orbit
Or lift, camshaft rotates around own axes, then change cam relative to valve opening or the angle of closedown；
That is, the anglec of rotation of eccentric hoop can be uniquely corresponding to valve stroke and valve timing angle.
Beneficial effects of the present invention:
(1) it is known that the rotating ratio of bent axle and camshaft is 2:1, if it is desired to change camshaft relative to bent axle
Phase place, existing motor-driven VVT patent is typically each by means of a planetary gears.The feature of planetary gears is
There are three rotary shafts, it may be assumed that the rotary shaft that sun gear, gear ring and planetary wheel carrier are formed, and three axes of rotation all overlap, arbitrarily
The rotary speed of two axles, determines the rotary speed of the 3rd axle.Obviously, three deads in line, thus it is possible to vary camshaft phase
Position, and cam lift can not be changed.In like manner, existing VVL is the most then to change valve rocker position of the fulcrum.It is known that gas
Door rocker arm pivot is actually a balance pivot, and its lever one end is connected with cam, and the other end is connected with valve.When lever props up
During the position change put, valve stroke changes.Owing to cam phase does not change, therefore, the phase place of valve timing does not has yet
Changing, simply valve stroke there occurs change.
(2) camshaft is directly installed on planetary gear by the present invention, due to center of rotation and the rotation of gear ring of planetary gear
Center has an offset E, and planetary gear is when gear ring center rotates, and planetary gear center will be along gear ring center with E as radius
Circuit orbit on run, this result is, phase place and the lift of cam change simultaneously, this change be more beneficial for improve
Engine performance.
(3) for existing VVL, being the position of the fulcrum of lever due to change, the cam of usual lever one end bears
The active force that the vector of the active force that the valve of active force and the lever other end bears is born equal to balance pivot, this mechanism
Changing the power consumed needed for fulcrum very greatly by causing, the stress of mechanism is the biggest, and therefore reliability and the life-span of mechanism all can
Reduce.And the governor motion of the present invention is phase place and the lift being changed cam by the anglec of rotation changing eccentric hoop, mechanism
Stress is the least, and required power consumption is the least, and this will be greatly improved reliability and the life-span of mechanism.
(4) especially, the present invention is when valve stroke minimum, and eccentric hoop is in top dead center position, and this position is adjusting
During lift, changing of larger angle changes relative to the least lift, and stability when idling and low speed are accelerated by this is brought
Benefit greatly.
Accompanying drawing explanation
Fig. 1 is that EVVTL arranges schematic diagram；
Fig. 2 is off ring rotating mechanism schematic diagram (A-A profile)；
Fig. 3 is that camshaft axis is in top dead center position figure；
Fig. 4 is that camshaft axis is in bottom dead center position figure；
Fig. 5 is camshaft drive profile (B-B profile)；
Fig. 6 is camshaft drive D-D profile；
Fig. 7 is camshaft phase and lift variation schematic diagram (from the beginning of top dead centre)；
Fig. 8 is camshaft phase and lift variation schematic diagram (from the beginning of lower dead center)；
Fig. 9 is reducing gear C-C profile；
Figure 10 is reducing gear E-E profile；
Figure 11 is reducing gear F-F profile；
Figure 12 is reducing gear self-lock mechanism figure；
Figure 13 is inlet and exhaust valve phase place and lift changes schematic diagram simultaneously；
Figure 14 is to integrate driving, deceleration and the structure chart of eccentric hoop rotating mechanism
Wherein: 10-eccentric hoop rotating mechanism, 100-camshaft, 101-camshaft axis, 102-central axis, 103-is convex
Wheel bearing seat, 104-running orbit, 105-regulates bearing block, 106-cam axle top dead center, 107-camshaft lower dead center, 108a-
Support endoporus, 108-Cam bearing pedestal endoporus, 109-angular transducer, 109a-angular transducer, 110-rolling bearing, 111-
Fixed support, 200-camshaft drive, 201-camshaft sprocket, 202-outer ring, 203-bearing outer ring, 204-bearing rolls
Pearl, 205-bearing inner race, 206-support set, 207-planetary gear, 208-gear ring, 209-gear chamber cover, 210-bolt, 211-is fixed
Position pin, 212-bolt, 300-reducing gear, 301-regulates axle axis, and 302-regulates axle, 303-eccentric gear, cylinder in 304-
Surface, 305a-the first eccentric hoop outer cylinder surface, 305-outer cylinder surface, 306-regulates gear, 307a-the first eccentric hoop,
307-eccentric hoop, 309-bolt, 310-latch dish, 311-latch, 312-fewer differential teeth planetary wheel, 313-fewer differential teeth planetary wheel inner circle
Post surface, the 314-fewer differential teeth planetary gear teeth, 315-few teeth difference gear ring, 316-few teeth difference annular gear teeth, 317-pin hole, 318-ring
Shape groove, 319-latch disk axis, 320-eccentric, 321-eccentric inner periphery, 322-eccentric outer cylinder surface, 323-
Eccentric axis, 324-shell, 325-support ring, 326-support ring outer cylinder surface, 327-spacer pin, 329-bolt, 330-
Motor, 331-motor shaft, 332-electrical axis, 400-exhaust cam shaft, 401-exhaust cam shaft axis, 402-exhaust center axle
Line, 403-aerofluxus eccentric gear, 407-aerofluxus eccentric hoop, α-eccentric gear segment angle, β-cannelure segment angle,-eccentric hoop
307 anglecs of rotation, γ-valve timing angle, Δ-lift knots modification, distance L between central axis 102 and camshaft axis 101,
E-the first eccentric hoop 307a and the offset of eccentric hoop 307, the offset of e-eccentric 320.
Detailed description of the invention
Below with reference to accompanying drawing 1-14, technical scheme is described in detail.
As it is shown in figure 1, the invention provides a kind of changing valve timing and changing the dress of valve stroke for internal combustion engine
Putting, this device includes: camshaft drive 200, eccentric hoop rotating mechanism 10 and reducing gear 300.
1, eccentric hoop rotating mechanism 10
As first priority scheme of the present invention, as shown in Figure 1.Described eccentric hoop rotating mechanism 10 includes a regulation axle
302 and regulation axle axis 301, at least one regulate bearing block 105, and at least one regulate gear 306, several with regulating gear 306
Measure equal eccentric gear 303 and eccentric hoop 307, at least one Cam bearing pedestal 103, camshaft 100, camshaft axis 101,
Central axis 102 and angular transducer 109；
Described regulation axle 302 is arranged in engine cylinder head system (not shown) abreast with camshaft 100, and can revolve
Being installed in described regulation bearing block 105 with turning, described regulation bearing block 105 is then fixedly installed on cylinder cap；
Described regulation axle 302 one end is connected with reducing gear 300 (will be described below), and is driven by reducing gear 300
Dynamic its rotates around regulation axle axis 301, and its other end installs an angular transducer 109, and this sensor is used for determining regulation axle
The anglec of rotation；
As in figure 2 it is shown, described regulation gear 306 is fixedly installed to regulate on axle 302, this gear and described eccentric tooth
Wheel 303 is meshed, and described eccentric gear 303 is a sector gear, and according to different designs, its eccentric gear fan angle alpha is little
In or equal to 360 degree；Described eccentric gear 303 is fixed on described eccentric hoop 307 (in most cases, eccentric tooth
Wheel 303 and eccentric hoop 307 are designed to same part), the regulation gear 306 that rotarily drives of described regulation axle 302 rotates,
And drive the eccentric gear 303 being meshed therewith and eccentric hoop 307 to rotate around central axis 102；
Described eccentric hoop 307 has two peripheries, it may be assumed that outer cylinder surface 305 and inner periphery 304, outside it
The axis of periphery 305 overlaps with central axis 102, and camshaft eccentric hoop 307 is to rotate around central axis 102 in other words
, the axis of its inner periphery 304 overlaps with camshaft axis 101, that is, two cylinder tables that eccentric hoop 307 has
There is an offset E between face, the size of this offset E is equal to distance L between central axis 102 and camshaft axis 101；
Described eccentric hoop 307 is rotatably installed in the Cam bearing pedestal endoporus 108 of described Cam bearing pedestal 103
In, its outer cylinder surface 305 contacts slidably with Cam bearing pedestal endoporus 108, and Cam bearing pedestal 103 is then by fixing peace
It is contained on cylinder cap；
Described camshaft 100 is by the inner periphery 304 being rotatably sleeved on eccentric hoop 307；
As it is shown on figure 3, on the basis of Fig. 2, eccentric gear 303 and eccentric hoop 307 dextrorotation are turn 90 degrees (from internal combustion
Machine front end is observed, as follows), then camshaft axis 101 is rotated clockwise to cam axle top dead center 106 along running orbit 104
Position, now, valve stroke minimizes that (different internal combustion engines has different designs, but always has a valve stroke minimum
Position, we define valve stroke minimum position is top dead centre, and valve stroke maximum position is lower dead center)；
As shown in Figure 4, on the basis of Fig. 2, by eccentric gear 303 and eccentric hoop 307 90-degree rotation counterclockwise, then cam
Axle axis 101 rotates counterclockwise to camshaft lower dead center 107 position along running orbit 104, and now, valve stroke reaches
Greatly；According to Fig. 3 and Fig. 4, the maximum variable quantity of valve stroke is 2E；
2, camshaft drive 200
As it is shown in figure 5, described camshaft drive 200 include camshaft sprocket 201 or toothed belt wheel, outer ring 202,
Bearing outer ring 203, bearing ball 204, bearing inner race 205, support set 206, planetary gear 207, gear ring 208, gear chamber cover
209, central axis 102 and camshaft axis 101 and distance L between them.
Camshaft sprocket 201 or toothed belt wheel, be fixedly installed on outer ring 202, by chain or odontoid belt with
Crankshaft timing sprocket or timing toothed belt wheel engagement (described chain or odontoid belt, crankshaft timing sprocket or timing profile of tooth skin
Belt wheel figure does not all show), and be driven by the crankshaft and make camshaft sprocket 201 rotate around central axis 102；Outer ring 202, is fixed
It is arranged on bearing outer ring 203, synchronize with above-mentioned camshaft sprocket 201 rotates around central axis 102；
Bearing inner race 205 is fixedly installed on support set 206, bearing outer ring 203, bearing ball 204 and bearing inner race
205, the centrage of these three parts overlaps with central axis 102；Support set 206, is fixedly installed to cylinder cap by bolt 212
In (not shown), the axis of its support set 206 overlaps with central axis 102；Planetary gear 207, by bolt 210 with fixed
Position pin 211 is fixedly installed to one end of camshaft 100, and rotates with camshaft 100 and rotate, its rotation axis and camshaft
Axis 101 overlaps；Gear ring 208 is fixedly installed on outer ring 202, and rotates with the rotation of outer ring 202, its rotation axis with
Central axis 102 overlaps；
Gear chamber cover 209, is fixedly connected at the front end (internal combustion engine front end) of outer ring 202, rotates with outer ring 202 and revolves
Turning, its rotation axis overlaps with central axis 102；
Between distance L between central axis 102 and camshaft axis 101 is equal to periphery inside and outside eccentric hoop 307
Offset E；
When bent axle rotarily drives camshaft sprocket 201 or toothed belt wheel rotation, it is further driven to outside outer ring 202, bearing
Circle 203, gear ring 208 and gear chamber cover 209 rotate around support set 206 axis (or central axis 102), due to planetary gear 207
With the meshing relation of gear ring 208, gear ring 208 drives planetary gear 207 to rotate around camshaft axis 101, thus completes bent axle
Rotation to camshaft 100 drives；
As shown in Figure 6, due to axis 102 centered by the rotation axis of gear ring 208, the rotation axis of planetary gear 207 is
Camshaft axis 101, and the rotation axis of eccentric hoop 307 is also central axis 102, and camshaft axis 101 and central axis
Distance L between 102 is equal to the offset E of eccentric hoop 307, and therefore, gear ring 208, planetary gear 207 and eccentric hoop 307 are common
Set up a K-H-V planetary gear mechanism.
Difference is: in traditional K-H-V planetary gear mechanism, eccentric hoop 307 is rotatably mounted
At the middle part of planetary gear 207, the eccentric hoop 307 of the present invention is then rotatably installed in camshaft 100 and camshaft bearing
Between seat endoporus 108, or between camshaft 100 and support endoporus 108a.
Speed ratio relation according to K-H-V mechanism, it is easy to know:
● when eccentric hoop 307 is static do not rotate time, the speed ratio of gear ring 208 and planetary gear 207 is equal to ZC/ZB, wherein, ZC
For the number of teeth of planetary gear 207, ZBFor gear ring 208 number of teeth, and gear ring 208 is consistent with the direction of rotation of planetary gear 207；
For quartastroke engine, its bent axle is 2:1 with the speed ratio of camshaft 100, it may be assumed that when bent axle rotation takes two turns,
Camshaft 100 rotation is turned around；
Described crankshaft sprocket, camshaft sprocket, gear ring and the planetary number of teeth meet following formula: (the tooth of camshaft sprocket
The number of teeth of number/crankshaft sprocket) * (number of teeth of the planetary number of teeth/gear ring)=2:1
Now, phase place and the lift of camshaft 100 is maintained at original position and does not change；
● when gear ring 208 transfixion, eccentric hoop 307 is equal to-Z with the speed ratio of planetary gear 207C/(ZB-ZC), and partially
Thimble 307 is contrary with planetary gear 207 direction of rotation；
Camshaft phase and lift Principles of Regulation are as follows:
As shown in figs. 7 a and 7b, rotate counterclockwise from cam axle top dead center 106 around central axis 102 when eccentric hoop 307
OneDuring angle, camshaft 100 (is connected owing to camshaft 100 is fixing with planetary gear 207, and is same center of rotation--cam
Axle axis 101, the phase place of planetary gear 207 i.e. represents the phase place of camshaft 100) also in company with eccentric hoop 307 around central axis
102 revolution one counterclockwiseAngle, camshaft lift increases an amount Δ, and meanwhile, camshaft 100 also can be around camshaft axis
101 turn clockwise a γ angle (size at γ angle by K-H-V mechanism parameter determine), now, along with the increasing of cam lift
Greatly, γ angle also increases (setting clockwise for just)；
As shown in Fig. 7 a and Fig. 7 c, when eccentric hoop 307 turns clockwise from cam axle top dead center 106 around central axis 102
OneDuring angle, camshaft 100 also revolves round the sun one around central axis 102 clockwise in company with eccentric hoop 307Angle, camshaft lift
Increasing an amount Δ, meanwhile, camshaft 100 also can rotate a γ angle counterclockwise around camshaft axis 101, now, along with
The increase of cam lift, γ angle reduces；
As figures 8 a and 8 b show, turn clockwise from camshaft lower dead center 107 around central axis 102 when eccentric hoop 307
OneDuring angle, camshaft 100 also revolves round the sun one around central axis 102 clockwise in company with eccentric hoop 307Angle, camshaft lift
Increasing an amount Δ, meanwhile, camshaft 100 also can rotate a γ angle counterclockwise, now, along with convex around camshaft axis 101
The reduction of wheel lift, γ angle also reduces；
As shown in Fig. 8 a and Fig. 8 c, when eccentric hoop 307 rotates from camshaft lower dead center 107 counterclockwise around central axis 102
OneDuring angle, camshaft 100 also revolves round the sun one around central axis 102 counterclockwise in company with eccentric hoop 307Angle, meanwhile, camshaft
100 also can turn clockwise a γ angle around camshaft axis 101, and now, along with the reduction of cam lift, γ angle increases；
γ angle represents valve timing angle, and when γ angle increases (clockwise), valve timing is in advance；Otherwise, work as γ
When angle reduces, valve timing postpones；
The direction of rotation of eccentric hoop 307 is always contrary with γ valve timing angle direction of rotation, i.e. clockwise when eccentric hoop 307
During rotation, γ angle rotates the most counterclockwise, or valve timing postpones；When eccentric hoop 307 rotates counterclockwise, the then dextrorotation of γ angle
Turn, or valve timing is in advance；
And camshaft axis 101 rotates to camshaft lower dead center 107 along running orbit 104 from cam axle top dead center 106
Time, the most clockwise or counterclockwise, valve stroke always increases；Camshaft axis 101 along running orbit 104 from camshaft
Lower dead center 107 is when cam axle top dead center 106 rotates, and the most clockwise or counterclockwise, valve stroke always reduces；
In a word, the present invention provides camshaft phase and lift regulative mode are summarized as follows:
The first, the anglec of rotation of eccentric hoop 307 uniquely determines camshaft phase and lift, when not changing eccentric hoop 307
The anglec of rotation time, camshaft phase and lift will keep original state constant, as long as this also means that and controlling eccentric hoop 307
The anglec of rotation, just can obtain required camshaft 100 phase place and lift；Further, the phase place of regulation axle 302 is uniquely corresponding to partially
The anglec of rotation of thimble 307, the phase place therefore changing regulation axle 302 is equal to change lift and the phase place of camshaft 100.
The second, revolve to camshaft lower dead center 107 from cam axle top dead center 106 along running orbit 104 when camshaft axis 101
When turning, the most clockwise or counterclockwise, valve stroke always increases；When camshaft axis 101 along running orbit 104 from cam
Axle lower dead center 107 is when cam axle top dead center 106 rotates, and the most clockwise or counterclockwise, valve stroke always reduces；
3rd, the direction of rotation of eccentric hoop 307 is always contrary with γ valve timing angle direction of rotation；
3, reducing gear 300
As shown in Fig. 9, Figure 10 and Figure 11, described reducing gear 300 takes turns reducing gear for fewer differential teeth planetary, including: bolt
309, latch dish 310, at least one latch 311, fewer differential teeth planetary wheel 312, fewer differential teeth planetary wheel inner periphery 313, few tooth
Difference planetary gear 314, few teeth difference gear ring 315, few teeth difference annular gear teeth 316, pin hole 317, cannelure 318, latch disk axis
319, eccentric 320, eccentric inner periphery 321, eccentric outer cylinder surface 322, eccentric axis 323, shell 324,
Support ring 325, support ring outer cylinder surface 326, spacer pin 327, bolt 329, motor 330, motor shaft 331, electrical axis
332, and eccentric eccentric amount e；
One end of latch dish 310, is fixedly installed to regulate the end of axle 302, latch disk axis 319 by bolt 309
Overlap with regulation axle axis 301 and electrical axis 332；
Along latch disk axis 319 distance radius R1Circumference on, be fixedly installed and be uniformly distributed 4 to 12 latches
311, taking turns 312 rotation axiss (this axis overlaps) radius with eccentric axis 323 at distance fewer differential teeth planetary is R1Circumference on,
Being uniformly distributed the pin hole 317 identical with latch 311 quantity, the diameter of this pin hole 317 is inclined with twice equal to latch 311 diameter
Heart wheel eccentric amount e sum (this is because when latch dish 310 and fewer differential teeth planetary take turns 312 rotation, due to their rotation axis
Differ an eccentric eccentric amount e, between pin hole 317 and latch 311, leave the gap of 2e size, be allowed to not send out
Raw movement interference)；
The other end of latch dish 310 fits together slidably with fewer differential teeth planetary wheel 312, is fixedly mounted on latch dish
Latch 311 on 310 then inserts in the pin hole 317 offered on the fewer differential teeth planetary wheel 312 of correspondence；
Described fewer differential teeth planetary wheel inner periphery 313 is rotatably installed on eccentric outer cylinder surface 322,
Eccentric inner periphery 321 is then rotatably installed on support ring outer cylinder surface 326；
Described support ring 325 is fixedly mounted on the middle part of shell 324, make the axis of support ring outer cylinder surface 326 with
Latch disk axis 319, regulation axle axis 301 and electrical axis 332 overlap；
Shell 324 is fixed in (not shown) transfixion on cylinder cap by bolt 329；
Eccentric axis 323, the rotation axis of eccentric outer cylinder surface 322, that fewer differential teeth planetary takes turns 312 rotation axiss is complete
Portion overlaps；
Described motor shaft 331 is fixing with eccentric 320 to be connected, electrical axis 332 and the eccentric 320 of motor shaft 331
The dead in line of inner periphery 321；
When regulation axle 302 phase angle that angular transducer 109 (Fig. 1) is perceived is sent to the control unit of internal combustion engine
Time (ECU does not shows), ECU obtains internal-combustion engine rotational speed, speed, gear ratio, accelerator pedal position and interior from other place simultaneously
The signals such as combustion engine water temperature, Lubricating Oil Temperature, pressure, and after calculating processes, send to motor 330 and perform instruction；
When motor 330 is after internal combustion engine ECU accepts instruction, and motor 330 drives motor shaft 331 to rotate around electrical axis 332
Time, its driving eccentric 320 rotates, and on the one hand the rotation of eccentric 320 drives fewer differential teeth planetary wheel 312 around latch disk axis
319 equidirectional revolution, on the other hand the number of teeth, the number of teeth of few teeth difference gear ring 315 and eccentric according to fewer differential teeth planetary wheel 312 are inclined
The speed ratio that the size of heart amount e is determined is around eccentric axis 323 counter-rotating；
Meanwhile, the rotation of fewer differential teeth planetary wheel 312 and the fewer differential teeth planetary gear teeth 314 and few teeth difference annular gear teeth
The common effect of 316, drives the latch dish 310 equidirectional rotation of constant speed fit together with it, and further latch dish 310 drives
Regulation axle 302, regulation gear 306, eccentric gear 303 and eccentric hoop 307 rotate, and cam phase and lift are changed；
As shown in Figure 10, along latch disk axis 319 distance radius R2(R2>R1) circumference on, offer one section of cannelure
318, its cannelure sector angle beta is less than 360 degree；Spacer pin 327, its one end is fixedly installed on shell 324 (such as Fig. 9 institute
Show), the other end inserts in the cannelure 318 of latch dish 310.Owing to spacer pin 327 is fixed on transfixion on shell 324,
When latch dish 310 clockwise or counterclockwise time, the two ends of the cannelure 318 on latch dish 310 will touching spacer pin 327,
Described spacer pin 327, limits the maximum anglec of rotation of latch dish 310；
Being connected and coaxial line owing to latch dish 310 is fixing with regulation axle 302, the rotation of latch dish 310 can be understood as adjusting
The rotation of nodal axisn 302, so limiting the maximum anglec of rotation of latch dish 310, it is simply that limit the maximum anglec of rotation of regulation axle 302
Degree, it is to avoid be arranged on regulation axle 302 regulates gear 306 with eccentric gear 303 beyond the scope of eccentric gear fan angle alpha
It is disengaged from (as shown in Figure 2)；
As shown in Fig. 1, Fig. 9, Figure 10 and Figure 11, contrary with the rotation that above-mentioned motor 330 drives eccentric hoop 307.At internal combustion
During machine runs, when coming from the moment of torsion back action of camshaft 100 in motor 330, its moment of torsion will be sequentially delivered to eccentric hoop
307, eccentric gear 303, regulation gear 306, regulation axle 302, latch dish 310, fewer differential teeth planetary wheel 312 and eccentric 320, by
Sufficiently small in eccentric eccentric amount e, make the inner periphery 321 support ring outside cylinder relative to sliding contact of eccentric 320
Producing self-locking between surface 326, its rotary motion can not be further transferred on motor shaft 331, so, it is to avoid camshaft
The motion of 100 interference to motor 330 motion, substantially prolongs electrical machinery life；
As shown in figure 12, reverse movement transmission condition of self-locking is described:
e<f1*R3/ sin Δ or e < f2*R4/sinΔ
Wherein: the offset of e---eccentric 320
f1---the coefficient of friction between eccentric outer cylinder surface 322 and fewer differential teeth planetary wheel inner periphery 313
R3---eccentric outer cylinder surface 322 radius
f2---the coefficient of friction between eccentric inner periphery 321 and support ring outer cylinder surface 326
R4---eccentric inner periphery 321 radius
Δ---act on the azimuth that eccentric is made a concerted effort
In sum, the effect of camshaft drive 200 is: completes bent axle and drives the rotation of camshaft 100, with
Time, constitute K-H-V planetary gear mechanism together with eccentric hoop 307, make the characteristics of motion of camshaft meet K-H-V planet tooth
The requirement of wheel drive mechanism；The effect of eccentric hoop rotating mechanism 10: be the motion rule according to K-H-V planetary gear mechanism
Rule, performs camshaft 100 lift and the change of phase place；The effect of reducing gear: be then by the high speed of motor 330, little torsion
Low speed, high pulling torque rotary motion are changed in square rotary motion, it is simple to drive regulation axle 302, and provide reverse self-locking function, prevent
The high pulling torque destruction to motor.
This mechanism may be obviously used for admission cam it can also be used to exhaust cam.
As second priority scheme of the present invention, see Figure 14.
Unlike the first priority scheme: camshaft drive 200, eccentric hoop rotating mechanism 10 and reducing gear
300 are arranged in together side by side, the output part latch dish 310 of reducing gear, are no longer attached to regulate on axle 302, but directly
Latch dish 310 is fixedly and coaxially connected with the first eccentric hoop 307a, directly drives the first eccentric hoop 307a to rotate, indirectly drive it
Its eccentric hoop 307 rotates rather than as the first priority scheme drives eccentric hoop by regulation gear 306, eccentric gear 303
307；
In addition to the first eccentric hoop 307a, remaining eccentric hoop 307 is driven by camshaft 100 and rotates, in order to prevent motion
Self-locking, is respectively mounted rolling bearing in the periphery of all of eccentric hoop 307；
Additionally, reducing gear 300 is fixedly mounted on the front end of fixed support 111, the electrical axis that reducing gear 300 comprises
332, cylinder 321 surface, support ring outer cylinder surface 326, few teeth difference gear ring 315, cam in latch disk axis 319, eccentric
Gear ring 208, camshaft sprocket 201, outer ring 202, support set 206 and the eccentric hoop rotating mechanism that axle drive mechanism 200 comprises
Rolling bearing the 110, first eccentric hoop 307a outer cylinder surface 305a, the fixed support endoporus 108a that 10 comprise, all above zero
The geometric center of part or axis of movement all overlap with central axis 102；
And fewer differential teeth planetary wheel 312, fewer differential teeth planetary wheel inner periphery 313, eccentric outer cylinder surface 322, these
The geometric center of part or axis of movement then overlap with eccentric axis 323；
The rotation axis of planetary gear 207 and camshaft 100 overlaps with camshaft axis 101；
Identical with the first priority scheme: gear ring 208, planetary gear 207 and the first eccentric hoop 307a and eccentric hoop
307 have set up a K-H-V planetary gear mechanism jointly, to such an extent as to are driven eccentric 320, few tooth successively by motor 330
Difference planetary gear 312, latch dish the 310, first eccentric hoop 307a rotate, and finally change lift and the phase place of camshaft 100, its fortune
Dynamic rule is identical with the first priority scheme with result；Additionally, when camshaft 100 inversely transmits moment of torsion, in its reducing gear 300
Support ring outer cylinder surface 326 and eccentric inner periphery 321 between there is self-locking, this also with the first priority scheme phase
With.
Additionally, the program is owing to eliminating regulation axle 302, the regulation part such as gear 306 and eccentric gear 303, at cost
On substantially take advantage, especially, this programme is minimum to the amendment of internal combustion engine.
3rd embodiment: on the basis of preferred case, changes the speed ratio of bent axle Yu camshaft 100 into 1:1 (to two-stroke
Internal combustion engine), it may be assumed that when bent axle rotation is turned around, camshaft 100 also revolves and turns around.
Described crankshaft sprocket, camshaft sprocket, gear ring and the planetary number of teeth meet following formula:
(number of teeth of the number of teeth/crankshaft sprocket of camshaft sprocket) * (number of teeth of the planetary number of teeth/gear ring)=1:1.
4th embodiment: on the basis of the first preferred case, uses a regulation axle to change admission cam and row simultaneously
The phase place of gas cam and lift.
As shown in figure 13, regulation gear 306, air inlet eccentric gear 303, air inlet eccentric hoop are driven successively when regulation axle 302
307 and admission cam shaft axis 101 rotate, the final phase place changing admission cam and lift；Meanwhile, regulation axle 302 is also depending on
Secondary driving regulates gear 306, aerofluxus eccentric gear 403, aerofluxus eccentric hoop 407 and exhaust cam shaft axis 401 around exhaust center
Axis 402 rotates, the final cam phase changing exhaust cam shaft 400 and lift.
Generally, admission cam shaft phase place is different from the parameter of exhaust cam shaft phase place and lift with the parameter of lift.
Although being described embodiment of the present invention above in association with accompanying drawing, but the present invention is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiments the most schematic, guiding rather than restricted
's.Those of ordinary skill in the art is under the enlightenment of description, in the feelings without departing from the claims in the present invention institute protection domain
Under condition, it is also possible to make a variety of forms, these belong to the row of present invention protection.
Claims (10)
1. changing valve timing and changing a device for valve stroke for internal combustion engine, comprising: camshaft drive
(200), eccentric hoop rotating mechanism (10) and reducing gear (300), it is characterised in that it is characterized in that:
Described camshaft drive (200) includes camshaft sprocket (201), outer ring (202), support set (206), planetary gear
(207) it is fixedly installed on outer ring (202) with gear ring (208), camshaft sprocket (201) and gear ring (208), outer ring (202)
Being rotatably installed on support set (206), support set (206) is fixed on cylinder cap；Camshaft sprocket (201), gear ring
(208), outer ring (202) and the axis of (206) four parts of support set or center of rotation all overlap with central axis (102), when
When bent axle drive cam shaft sprocket wheel (201) rotates, camshaft sprocket (201), gear ring (208) and (202) three, outer ring part are equal
Driven so that it is around central axis (102) synchronous rotary；
Planetary gear (207), is fixedly installed to the front end of camshaft (100), its rotation axis and camshaft axis (101) weight
Close；Planetary gear (207) and gear ring (208) internal messing, have centre-to-centre spacing L between the rotation axis of these two parts, work as gear ring
(208) when central axis (102) rotates, planetary gear (207) is driven to rotate around camshaft axis (101), with planetary gear
(207) camshaft (100) being fixed together, also around camshaft axis (101) synchronous rotary, so far, completes bent axle to cam
The rotation of axle (100) drives；
Described eccentric hoop rotating mechanism (10) includes that at least one eccentric hoop (307), described eccentric hoop (307) have inside and outside two
Individual periphery, has offset E, described offset E equal to planetary gear (207) between the axis of two periphery
And centre-to-centre spacing L between gear ring (208) rotation axis, described eccentric hoop (307) is rotatably socketed in camshaft (100) axle
Between neck and Cam bearing pedestal endoporus (108), its inner periphery (304) and camshaft (100) axle journal sliding contact, its cylindrical
Post surface (305) and Cam bearing pedestal endoporus (108) sliding contact, install sliding bearing or install the axis of rolling between contact surface
Hold；
The axis of Cam bearing pedestal endoporus (108) and eccentric hoop outer cylinder surface (305) overlaps with central axis (102), therefore,
The rotation of eccentric hoop (307) is limited at and rotates around central axis (102), again owing to offset E is equal to centre-to-centre spacing L, so, institute
The common group of gear ring (208), planetary gear (207), eccentric hoop (307), camshaft axis (101) and the central axis (102) stated
Build a K-H-V planetary gear mechanism；
The characteristics of motion according to K-H-V planetary gear mechanism:
When gear ring (208) is driven in rotation, owing to meshing relation, planetary gear (207) and camshaft (100) are revolved by driving
Turning, now valve stroke and timing angle all do not change；
When eccentric hoop (307) is driven in rotation, on the one hand eccentric hoop (307) will drive camshaft axis (101) with offset E
For radius, along running orbit (104) and eccentric hoop (307) rotating Vortex, another aspect is due to gear ring (208) and planetary gear
(207) intermeshing restriction relation so that planetary gear (207) is simultaneously around camshaft axis (101) counter-rotating；
Camshaft axis (101) changes camshaft (100) relative to valve tappet or valve along the movement of running orbit (104)
The distance of rocking arm or lift, camshaft (100) rotates around own axes (101), changes cam relative to valve opening or pass
The angle closed；
That is, the anglec of rotation of eccentric hoop (307) can be uniquely corresponding to valve stroke and valve timing angle.
2. changing valve timing and changing a device for valve stroke for internal combustion engine, comprising: camshaft drive
(200), eccentric hoop rotating mechanism (10) and reducing gear (300), it is characterised in that it is characterized in that:
Described camshaft drive (200) includes camshaft sprocket (201), outer ring (202), support set (206), planetary gear
(207) it is fixedly installed on outer ring (202) with gear ring (208), camshaft sprocket (201) and gear ring (208), outer ring (202)
Being rotatably installed on support set (206), support set (206) is fixed on cylinder cap；Camshaft sprocket (201), gear ring
(208), outer ring (202) and the axis of (206) four parts of support set or center of rotation all overlap with central axis (102), when
When bent axle drive cam shaft sprocket wheel (201) rotates, camshaft sprocket (201), gear ring (208) and (202) three, outer ring part are equal
Driven so that it is around central axis (102) synchronous rotary；
Planetary gear (207), is fixedly installed to the front end of camshaft (100), its rotation axis and camshaft axis (101) weight
Close；Planetary gear (207) and gear ring (208) internal messing, have centre-to-centre spacing L between the rotation axis of these two parts, work as gear ring
(208) when central axis (102) rotates, planetary gear (207) is driven to rotate around camshaft axis (101), with planetary gear
(207) camshaft (100) being fixed together, also around camshaft axis (101) synchronous rotary, so far, completes bent axle to cam
The rotation of axle (100) drives；
Described eccentric hoop rotating mechanism (10), it includes the first eccentric hoop (307a) and at least one eccentric hoop (307), described
The first eccentric hoop (307a) and eccentric hoop (307) be respectively provided with inside and outside two peripheries, the axis of two periphery it
Between there is offset E, described offset E equal to centre-to-centre spacing L between planetary gear (207) and gear ring (208) rotation axis；
Described first eccentric hoop (307a) is rotatably socketed in camshaft (100) axle journal and the endoporus of fixed support (111)
(108a), between, its inner periphery (304a) and camshaft (100) axle journal sliding contact, its outer cylinder surface (305a) is with solid
Fixed rack endoporus (108a) sliding contact, installs sliding bearing or installs rolling bearing between contact surface；Described fixed support
The axis of endoporus (108a) overlaps with central axis (102), the outer cylinder surface (305a) of described the first eccentric hoop (307a)
Support endoporus (108a) by being contacted is limited, also centered by central axis (102)；
Described eccentric hoop (307) is rotatably socketed between camshaft (100) axle journal and Cam bearing pedestal endoporus (108),
Its inner periphery (304) and camshaft (100) axle journal sliding contact, its outer cylinder surface (305) and Cam bearing pedestal endoporus
(108) rolling bearing (110) is installed between；The axis of described Cam bearing pedestal endoporus (108) and central axis (102) weight
Closing, the outer cylinder surface (305) of described eccentric hoop (307) is limited, also by the Cam bearing pedestal endoporus (108) contacted
Centered by central axis (102)；
When being delivered to latch dish (312) from the moment of torsion of motor (330) by reducing gear, the rotation of latch dish directly drives
The first eccentric hoop (307a) being secured to connect rotates around central axis, the first eccentric hoop (307a) to rotarily drive other inclined
Thimble (307) rotates；
Owing to the offset E of the first eccentric hoop (307a) and eccentric hoop (307) is equal to centre-to-centre spacing L, so, described gear ring
(208), planetary gear (207), the first eccentric hoop (307a), eccentric hoop (307), camshaft axis (101) and central axis
(102) a K-H-V planetary gear mechanism has jointly been set up；
The characteristics of motion according to K-H-V planetary gear mechanism:
When gear ring (208) is driven in rotation, owing to meshing relation, planetary gear (207) and camshaft (100) are revolved by driving
Turning, now valve stroke and timing angle all do not change；
When eccentric hoop (307a) is driven in rotation, on the one hand eccentric hoop (307a) will drive camshaft axis (101) with bias
Amount E is radius, along running orbit (104) and eccentric hoop (307a) rotating Vortex, on the other hand due to gear ring (208) and planet tooth
Wheel (207) intermeshing restriction relation so that planetary gear (207) is simultaneously around camshaft axis (101) counter-rotating；
Camshaft axis (101) changes camshaft (100) relative to valve tappet or valve along the movement of running orbit (104)
The distance of rocking arm or lift, camshaft (100) rotates around own axes (101), changes cam relative to valve opening or pass
The angle closed；
That is, the anglec of rotation of eccentric hoop (307a) can be uniquely corresponding to valve stroke and valve timing angle.
A kind of changing valve timing and changing the device of valve stroke for internal combustion engine the most according to claim 1, its
Be characterised by: described eccentric hoop rotating mechanism (10), including one regulation axle (302), at least one regulate bearing block
(105), at least one regulates gear (306) eccentric gear (303) equal with regulation gear (306) quantity and eccentric hoop
(307), at least one Cam bearing pedestal (103), camshaft (100) and central axis (102)；
Described regulation axle (302) and camshaft (100) are arranged on IC engine cylinder lid abreast, and are rotatably mounted in
In described regulation bearing block (105)；
Described regulation axle (302) one end is connected with reducing gear (300), and is driven it around regulation by reducing gear (300)
Axle axis (301) rotates；
Described regulation gear (306) is fixedly mounted in regulation axle (302), this regulation gear (306) and described eccentric gear
(303) being meshed, described eccentric gear (303) is a sector gear, and the fan angle alpha of described eccentric gear (303) is less than
Or equal to 360 degree；
Described eccentric gear (303) is fixed on described eccentric hoop (307)；
Regulation gear (306) that rotarily drives of described regulation axle (302) rotates, and drives the eccentric gear being meshed therewith
(303) and eccentric hoop (307) around central axis (102) rotate.
A kind of changing valve timing and changing the device of valve stroke for internal combustion engine the most according to claim 1 and 2,
It is characterized in that: described reducing gear (300) is that fewer differential teeth planetary takes turns reducing gear, including: latch dish (310), at least one
Latch (311), fewer differential teeth planetary wheel (312), fewer differential teeth planetary wheel inner periphery (313), few teeth difference gear ring (315), latch
Hole (317), latch disk axis (319), eccentric (320), eccentric inner periphery (321), eccentric outer cylinder surface
(322), eccentric axis (323), shell (324), support ring (325), support ring outer cylinder surface (326), wherein, eccentric
There is eccentric eccentric amount e；
Described latch dish (310) is solid with the powered regulation axle (302) of needs or the first eccentric hoop (307a) as output shaft
Determine to connect, and with the rotation axis of connected piece, connection includes that electrical axis (332) all overlaps；
Along latch disk axis (319) distance radius R1Circumference on, be fixedly installed and be uniformly distributed 4 to 12 latches
(311), taking turns (312) rotation axis radius at distance fewer differential teeth planetary is R1Circumference on, be uniformly distributed with latch (311) quantity
Identical pin hole (317), the diameter of this pin hole (317) equal to latch (311) diameter and twice eccentric eccentric amount e it
With；
Along latch disk axis (319) distance radius R2Circumference on, offer one section of cannelure (318), its cannelure sector angle beta
Less than 360 degree；Spacer pin (327) one end is fixedly installed on shell (324), and the other end inserts the annular of latch dish (310)
In groove (318)；
The other end of latch dish (310) fits together slidably with fewer differential teeth planetary wheel (312), is fixedly mounted on latch dish
(310) latch (311) on then inserts in the pin hole (317) offered on fewer differential teeth planetary wheel (312) of correspondence；
Described fewer differential teeth planetary wheel inner periphery (313) is rotatably installed on eccentric outer cylinder surface (322),
Eccentric inner periphery (321) is then rotatably installed on support ring outer cylinder surface (326)；
Described support ring (325) is fixedly mounted on the middle part of shell (324), makes the axis of support ring outer cylinder surface (326)
Overlap with latch disk axis (319), regulation axle axis (301) and electrical axis (332)；
Eccentric axis (323), the rotation axis of eccentric outer cylinder surface (322), fewer differential teeth planetary wheel (312) rotation axis
All overlap；
Described motor shaft (331) is fixing with eccentric (320) to be connected, the electrical axis (332) of motor shaft (331) and eccentric
(320) dead in line of inner periphery (321).
A kind of changing valve timing and changing the device of valve stroke for internal combustion engine the most according to claim 4, its
It is characterised by: when the cam phase angle that angular transducer (109) is perceived is sent to the control unit of internal combustion engine, ECU
Send to motor (330) and perform instruction；
When motor (330) is after internal combustion engine ECU accepts instruction, and motor (330) drives motor shaft (331) around electrical axis (332)
During rotation, it drives eccentric (320) to rotate, and the rotation of eccentric (320) on the one hand drives fewer differential teeth planetary wheel (312) around inserting
Pin disk axis (319) equidirectional revolution, takes turns the number of teeth of (312), the number of teeth of few teeth difference gear ring (315) according to fewer differential teeth planetary simultaneously
The speed ratio determined with the size of eccentric eccentric amount e is around eccentric axis (323) counter-rotating；
The fewer differential teeth planetary wheel rotation of (312) and the fewer differential teeth planetary gear teeth (314) and few teeth difference annular gear teeth (316) common
Effect, drives the equidirectional rotation of latch dish (310) constant speed fit together with it, and further latch dish (310) drives regulation
Axle (302), regulation gear (306), eccentric gear (303) and eccentric hoop (307) rotate.
A kind of changing valve timing and changing the device of valve stroke for internal combustion engine the most according to claim 4, its
It is characterised by: when the cam phase angle that angular transducer (109a) is perceived is sent to the control unit of internal combustion engine, ECU
Send to motor (330) and perform instruction；
When motor (330) is after internal combustion engine ECU accepts instruction, and motor (330) drives motor shaft (331) around electrical axis (332)
During rotation, it drives eccentric (320) to rotate, and the rotation of eccentric (320) on the one hand drives fewer differential teeth planetary wheel (312) around inserting
Pin disk axis (319) equidirectional revolution, takes turns the number of teeth of (312), the number of teeth of few teeth difference gear ring (315) according to fewer differential teeth planetary simultaneously
The speed ratio determined with the size of eccentric eccentric amount e is around eccentric axis (323) counter-rotating；
The fewer differential teeth planetary wheel rotation of (312) and the fewer differential teeth planetary gear teeth (314) and few teeth difference annular gear teeth (316) common
Effect, drives the equidirectional rotation of latch dish (310) constant speed fit together with it, and further latch dish (310) directly drives
First eccentric hoop (307a) or even remaining eccentric hoop (307) rotate.
A kind of changing valve timing and changing the device of valve stroke for internal combustion engine the most according to claim 4, its
It is characterised by: in internal combustion engine operation, when coming from the moment of torsion back action of camshaft (100) when motor (330), its moment of torsion
To be sequentially delivered to eccentric hoop (307), eccentric gear (303), regulation gear (306), regulation axle (302), latch dish (310),
, owing to there is sufficiently small eccentric eccentric amount e, it is possible to make eccentric in fewer differential teeth planetary wheel (312) and eccentric (320)
(320) inner periphery (321) is relative to producing self-locking between the support ring outer cylinder surface (326) of sliding contact.
A kind of changing valve timing and changing the device of valve stroke for internal combustion engine the most according to claim 4, its
It is characterised by: in internal combustion engine operation, when coming from the moment of torsion back action of camshaft (100) when motor (330), its moment of torsion
Eccentric hoop (307), the first eccentric hoop (307a), latch dish (310), fewer differential teeth planetary wheel (312) and bias will be sequentially delivered to
, owing to there is sufficiently small eccentric eccentric amount e in wheel (320), it is possible to the inner periphery (321) making eccentric (320) is relative
Self-locking is produced between the support ring outer cylinder surface (326) of sliding contact.
A kind of changing valve timing and changing the device of valve stroke for internal combustion engine the most according to claim 3, its
It is characterised by: use regulation axle (302) to change admission cam and the phase place of exhaust cam and lift simultaneously.
A kind of changing valve timing and changing the dress of valve stroke for internal combustion engine the most according to claim 1 and 2
Put, it is characterised in that: camshaft sprocket (201) can be replaced toothed belt wheel.
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| CN201610938957.XA CN106285814B (en) | 2016-10-25 | 2016-10-25 | A kind of device of VVT and lift range variable |
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| CN201610938957.XA CN106285814B (en) | 2016-10-25 | 2016-10-25 | A kind of device of VVT and lift range variable |
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| CN106870057A (en) * | 2017-04-12 | 2017-06-20 | 吉林大学 | A kind of in-cylinder direct fuel-injection engine directly opens the device of preceding in-cylinder pressure adjustment |
| CN108106853A (en) * | 2017-12-19 | 2018-06-01 | 杰锋汽车动力系统股份有限公司 | A kind of electronic type variable valve timing system device for testing functions and its test method |
| CN109184842A (en) * | 2018-10-12 | 2019-01-11 | 福泰动力有限公司 | Valve actuator and valve-driving system |
| CN110295964A (en) * | 2019-05-09 | 2019-10-01 | 湖南大兹动力科技有限公司 | A kind of engine valve control device that motor is adjusted |
| CN110578569A (en) * | 2018-06-08 | 2019-12-17 | 舍弗勒技术股份两合公司 | P0 system integrated into engine transmission timing system and vehicle |
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| CN108106853A (en) * | 2017-12-19 | 2018-06-01 | 杰锋汽车动力系统股份有限公司 | A kind of electronic type variable valve timing system device for testing functions and its test method |
| CN110578569A (en) * | 2018-06-08 | 2019-12-17 | 舍弗勒技术股份两合公司 | P0 system integrated into engine transmission timing system and vehicle |
| CN109184842A (en) * | 2018-10-12 | 2019-01-11 | 福泰动力有限公司 | Valve actuator and valve-driving system |
| CN109184842B (en) * | 2018-10-12 | 2023-08-08 | 福泰动力有限公司 | Valve driving device and valve driving system |
| CN110295964A (en) * | 2019-05-09 | 2019-10-01 | 湖南大兹动力科技有限公司 | A kind of engine valve control device that motor is adjusted |
| CN114364863A (en) * | 2019-09-13 | 2022-04-15 | 比亚乔公司 | Internal combustion engine with camshaft valve phase varying apparatus |
| CN114364863B (en) * | 2019-09-13 | 2024-03-26 | 比亚乔公司 | Internal combustion engine with camshaft valve phase change device |
| CN111520706A (en) * | 2020-04-30 | 2020-08-11 | 吉林省电力科学研究院有限公司 | Anti-blocking device for coal dropping pipe of fluidized bed boiler |
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|---|---|
| CN106285814B (en) | 2017-09-01 |
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