CN106285814B - A kind of device of VVT and lift range variable - Google Patents
A kind of device of VVT and lift range variable Download PDFInfo
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- CN106285814B CN106285814B CN201610938957.XA CN201610938957A CN106285814B CN 106285814 B CN106285814 B CN 106285814B CN 201610938957 A CN201610938957 A CN 201610938957A CN 106285814 B CN106285814 B CN 106285814B
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- camshaft
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- rotation
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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
-
- 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 and the device of lift range variable.According to the operation characteristic of internal combustion engine and requirement, only pass through set of device, you can change while realizing valve timing and lift, and it is with low cost, mechanism is reliable, response quickly, accuracy is high, and idling and cold start-up can be tackled fully, can preferably it be matched with the advanced technology such as variable compression ratio (VCR), even very likely cancel existing throttle mechanisms, it is important that install the device additional and little is changed to existing Structure of Internal-Combustion Engine, have extremely obvious effect to improving the efficiency of internal combustion engine.The device includes the reducing gear that a camshaft drive, an eccentric hoop rotating mechanism and a reverse movement transmit self-locking, the rotary motion of bent axle is changed into the rotary motion of camshaft by camshaft drive, the small moment of torsion rotary motion of the high speed of its built-in motor is changed into by low-speed big rotary motion by reducing gear, and drives eccentric hoop rotating mechanism while changing timing and the lift of valve.
Description
Technical field
It is applicable the present invention relates to a kind of internal-combustion engine variable valve timing and the device of lift range variable, more particularly to one kind
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) is obtained in internal combustion engine
To extensive use, meanwhile, the device of lift range variable (Variable Valve Lift, hereinafter referred to as VVL) also begins to obtain
Using, to engine performance improve play a significant role.As Current internal combustion engines industry is goed deep into cutting edge technologies such as VCR
Research, find the VVT of original hydraulic-driven because its reaction is slow, not high precision, small variable timing angle, cold start-up and idling
The presence for the problems such as operating mode is difficult to operation, can not match with above-mentioned technology.
One kind can both change valve timing, can change the device of valve stroke again, the cooperation with above-mentioned technology will ideally
Solve many puzzlements of existing internal combustion engine.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind by motor-driven VVT
With the device of lift range variable (Electric Variable Valve Timing and Variable Valve Lift,
Hereinafter referred to as EVVTL).According to the operation characteristic of internal combustion engine and requirement, only pass through set of device, you can realize valve timing and liter
Change while journey, and it is with low cost, mechanism is reliable, response quickly, and accuracy is high, and idling and cold start-up can be answered fully
It is right, can preferably it be matched with the cutting edge technology such as VCR, or even very likely cancel existing throttle mechanisms, it is important that install additional
The device changes little to existing Structure of Internal-Combustion Engine, has extremely obvious effect to improving the efficiency of internal combustion engine.
The present invention is achieved through the following technical solutions：
A kind of device for changing valve timing and change valve stroke for internal combustion engine, it includes：Camshaft actuated machine
Structure, eccentric hoop rotating mechanism and reducing gear, it is characterised in that：
The 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, the axis of four parts in outer ring and support set or pivot Jun Yu centers
Axis is overlapped, and when bent axle drive cam shaft sprocket wheel rotates, camshaft sprocket, gear ring and the part of outer ring three are driven, and are made
It is around central axis synchronous rotary；
Planetary gear is fixedly installed to the front end of camshaft, and its rotation axis is overlapped with camshaft axis；Planetary gear
With gear ring internal messing, there is between the rotation axis of this two parts 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 rotation driving of the bent axle to camshaft；
The eccentric hoop rotating mechanism includes at least one eccentric hoop, and the eccentric hoop has inside and outside two peripheries,
There is offset E, it is characterised in that described offset E is equal to planetary gear and tooth between the axis of two periphery
The centre-to-centre spacing L enclosed between rotation axis, the 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 can be both installed between contacting surface, rolling bearing can also be installed；
The axis of Cam bearing pedestal endoporus and eccentric hoop outer cylinder surface is overlapped with central axis, therefore, the rotation of eccentric hoop
Turn only to be only defined in and rotate around central axis, and because offset E is equal to centre-to-centre spacing L, 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；
According to the characteristics of motion of K-H-V planetary gear mechanisms：
When gear ring is driven in rotation, due to meshing relation, planetary gear and camshaft are driven in rotation, now valve liter
Journey and timing angle do not change；
When eccentric hoop is driven in rotation, one side eccentric hoop will drive camshaft axis using offset E as radius, along fortune
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；
Movement of the camshaft axis along running orbit changes distance of the camshaft relative to valve tappet or valve rocker
Or lift, camshaft rotates around own axes, then changes cam relative to valve opening or the angle of closing；
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 well 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, existing motor-driven VVT patents are typically each by means of a planetary gears.The characteristics of planetary gears is
With three rotary shafts, i.e.,：The rotary shaft of sun gear, gear ring and planetary wheel carrier formation, and three axes of rotation overlap, arbitrarily
The rotary speed of two axles, determines the rotary speed of the 3rd axle.Obviously, three axis are overlapped, thus it is possible to vary camshaft phase
Position, and cam lift can not be changed.Similarly, existing VVL is generally 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 branch
When the position of point changes, valve stroke changes.Because cam phase does not change, therefore, the phase of valve timing does not have yet
There is change, simply valve stroke is changed.
(2) camshaft is directly installed on planetary gear by the present invention, due to the rotation of the pivot and gear ring of planetary gear
Center has offset E, and planetary gear around gear ring center rotate when, planetary gear center will be along gear ring center using E as radius
Circuit orbit on run, this is as a result, the phase and lift of cam change simultaneously, and this change is more beneficial for raising
Engine performance.
(3) for existing VVL, due to change be lever position of the fulcrum, what the cam of usual lever one end was born
The vector for the active force that the valve of active force and the lever other end is born is equal to the active force that balance pivot is born, this mechanism
By causing, the power consumed needed for change fulcrum is very big, and the stress of mechanism is also very big, therefore the reliability of mechanism and life-span can
Reduction.And the governor motion of the present invention is the phase and lift for changing cam by changing the anglec of rotation of eccentric hoop, mechanism
Stress very little, required consumption power also very little, this will greatly improve reliability and the life-span of mechanism.
(4) especially, the present invention is when valve stroke is minimum, and eccentric hoop is in top dead center position, and the position is in adjustment
During lift, the change of larger angle changes relative to very small lift, and stability when this accelerates to idling and low speed is brought
Great benefit.
Brief description of the drawings
Fig. 1 is EVVTL arrangement schematic diagrames；
Fig. 2 is eccentric hoop 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 profiles；
Fig. 7 is camshaft phase and lift variation schematic diagram (since top dead centre)；
Fig. 8 is camshaft phase and lift variation schematic diagram (since lower dead center)；
Fig. 9 is reducing gear C-C profiles；
Figure 10 is reducing gear E-E profiles；
Figure 11 is reducing gear F-F profiles；
Figure 12 is reducing gear self-lock mechanism figure；
Figure 13 is inlet and exhaust valve phase and lift while changing schematic diagram；
Figure 14 is the structure chart for integrating driving, deceleration and eccentric hoop rotating mechanism
Wherein：10- eccentric hoop rotating mechanisms, 100- camshafts, 101- camshaft axis, 102- central axis, 103- is convex
Wheel bearing seat, 104- running orbits, 105- regulation bearing blocks, 106- cam axle top dead centers, 107- camshafts lower dead center, 108a-
Support endoporus, 108- Cam bearing pedestal endoporus, 109- angular transducers, 109a- angular transducers, 110- rolling bearings, 111-
Fixed support, 200- camshaft drives, 201- camshaft sprockets, 202- outer rings, 203- bearing outer rings, the rolling of 204- bearings
Pearl, 205- bearing inner races, 206- support sets, 207- planetary gears, 208- gear rings, 209- gear chamber covers, 210- bolts, 211- is fixed
Cylinder in position pin, 212- bolts, 300- reducing gears, 301- adjustment axis axis, 302- adjustment axis, 303- eccentric gears, 304-
Surface, 305a- the first eccentric hoop outer cylinder surfaces, 305- outer cylinder surfaces, 306- regulation gears, the eccentric hoops of 307a- first,
307- eccentric hoops, 309- bolts, 310- latch disks, 311- latches, 312- fewer differential teeth planetary wheels, 313- fewer differential teeth planetary wheel inner circles
Post surface, the 314- fewer differential teeth planetary gear teeth, 315- few teeth difference gear rings, 316- few teeth difference annular gear teeths, 317- pin holes, 318- rings
Shape groove, 319- latch disk axis, 320- eccentric wheels, 321- eccentric wheel inner peripheries, 322- eccentric wheel outer cylinder surfaces, 323-
Eccentric wheel axis, 324- shells, 325- support rings, 326- support ring outer cylinder surfaces, 327- spacer pins, 329- bolts, 330-
Motor, 331- motor shafts, 332- electrical axis, 400- exhaust cam shafts, 401- exhaust cam shaft axis, 402- exhaust center axles
Line, 403- exhaust eccentric gears, 407- exhaust eccentric hoops, α-eccentric gear segment angle, β-annular groove segment angle,- eccentric hoop
The distance between 307 anglecs of rotation, γ-valve timing angle, Δ-lift knots modification, central axis 102 and camshaft axis 101 L,
E- the first eccentric hoop 307a and eccentric hoop 307 offset, the offset of e- eccentric wheels 320.
Embodiment
Technical scheme is described in detail below with reference to accompanying drawing 1-14.
As shown in figure 1, the invention provides a kind of dress for changing valve timing and change valve stroke for internal combustion engine
Put, the device includes：Camshaft drive 200, eccentric hoop rotating mechanism 10 and reducing gear 300.
1st, eccentric hoop rotating mechanism 10
As the present invention the first priority scheme, as shown in Figure 1.The eccentric hoop rotating mechanism 10 includes an adjustment axis
302 and adjustment axis axis 301, at least one regulation bearing block 105, at least one regulation gear 306 is counted with regulation gear 306
Amount 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 adjustment axis 302 is abreast arranged in engine cylinder head system (not shown) with camshaft 100, and can be revolved
It is installed in turning in the regulation bearing block 105, and the regulation bearing block 105 is then fixedly installed on cylinder cap；
Described one end of adjustment axis 302 is connected with reducing gear 300 (will be described below), and is driven by reducing gear 300
Move it to rotate around adjustment axis axis 301, its other end installs an angular transducer 109, the sensor is used to determine adjustment axis
The anglec of rotation；
As shown in Fig. 2 the regulation gear 306 is fixedly installed in adjustment axis 302, the 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 small
In or equal to 360 degree；Described eccentric gear 303 is fixed on (in most cases, eccentric tooth on described eccentric hoop 307
Wheel 303 and eccentric hoop 307 are designed to same part), the rotation of described adjustment axis 302 drives regulation gear 306 to rotate,
And drive the eccentric gear 303 being meshed therewith and eccentric hoop 307 to be rotated around central axis 102；
Described eccentric hoop 307 has two peripheries, i.e.,：Outer cylinder surface 305 and inner periphery 304, outside it
The axis of periphery 305 is overlapped with central axis 102, and camshaft eccentric hoop 307 is rotated around central axis 102 in other words
, the axis of its inner periphery 304 is overlapped with camshaft axis 101, that is, two cylinder tables that eccentric hoop 307 has
There is an offset E between face, offset E size is equal to the distance between central axis 102 and camshaft axis 101 L；
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 is slideably in contact with Cam bearing pedestal endoporus 108, and Cam bearing pedestal 103 is then by fixed peace
On cylinder cap；
Described camshaft 100 is rotatably sleeved in the inner periphery 304 of eccentric hoop 307；
As shown in figure 3, on the basis of Fig. 2, eccentric gear 303 and the dextrorotation of eccentric hoop 307 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 reach that minimum (different internal combustion engines has different designs, but always has valve stroke minimum
Position, we define valve stroke minimum position for top dead centre, and valve stroke maximum position is lower dead center)；
As shown in figure 4, on the basis of Fig. 2, by 90 degree of eccentric gear 303 and 307 rotate counterclockwise of eccentric hoop, then cam
Axle axis 101 rotates counterclockwise to the position of camshaft lower dead center 107 along running orbit 104, and now, valve stroke reaches most
Greatly；According to Fig. 3 and Fig. 4, the maximum variable quantity of valve stroke is 2E；
2nd, camshaft drive 200
As shown in figure 5, the 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 they the distance between L.
Camshaft sprocket 201 or toothed belt wheel, are fixedly installed on outer ring 202, by chain or odontoid belt with
Crankshaft timing sprocket or timing toothed belt wheel engagement (chain or odontoid belt, crankshaft timing sprocket or timing tooth form skin
Do not shown in belt wheel figure), and being driven by the crankshaft makes camshaft sprocket 201 be rotated around central axis 102；Outer ring 202, is fixed
It is synchronous with above-mentioned camshaft sprocket 201 to be rotated around central axis 102 on bearing outer ring 203；
Bearing inner race 205 is fixedly installed on support set 206, bearing outer ring 203, bearing ball 204 and bearing inner race
205, the center line of this three parts is overlapped with central axis 102；Support set 206, cylinder cap is fixedly installed to by bolt 212
In (not shown), the axis of its support set 206 is overlapped with central axis 102；Planetary gear 207, by bolt 210 and calmly
Position pin 211 is fixedly installed to one end of camshaft 100, and rotates and rotate with camshaft 100, its rotation axis and camshaft
Axis 101 is overlapped；Gear ring 208 is fixedly installed on outer ring 202, and is rotated with the rotation of outer ring 202, its rotation axis with
Central axis 102 is overlapped；
Gear chamber cover 209, is fixedly connected at the front end (internal combustion engine front end) of outer ring 202, rotates and revolve with outer ring 202
Turn, its rotation axis is overlapped with central axis 102；
The distance between central axis 102 and camshaft axis 101 L are equal to inside and outside eccentric hoop 307 between periphery
Offset E；
When bent axle rotating band moving cam axle sprocket wheel 201 or toothed belt wheel rotate, outer ring 202 is further driven to, outside bearing
Circle 203, gear ring 208 and gear chamber cover 209 rotate around the axis of support set 206 (or central axis 102), due to planetary gear 207
With the meshing relation of gear ring 208, the driving planetary gear 207 of gear ring 208 rotates around camshaft axis 101, so as to complete bent axle
Rotation driving to camshaft 100；
As shown in fig. 6, due to axis 102 centered on 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
The distance between 102 L are equal to the offset E of eccentric hoop 307, and therefore, gear ring 208, planetary gear 207 and eccentric hoop 307 are common
A K-H-V planetary gear mechanism is set up.
Difference is：In traditional K-H-V planetary gear mechanisms, eccentric hoop 307 is rotatably mounted
Eccentric hoop 307 at the middle part of planetary gear 207, and 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.
Relation is compared according to the speed of K-H-V mechanisms, it is easy to know：
● when eccentric hoop 307 is static not to be rotated, 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 the number of teeth of gear ring 208, and gear ring 208 is consistent with the direction of rotation of planetary gear 207；
For quartastroke engine, the speed ratio of its bent axle and camshaft 100 is 2:1, i.e.,：When bent axle rotation takes two turns,
The rotation of camshaft 100 is turned around；
The 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, the phase and lift of camshaft 100 are maintained at original position and not changed；
● when 208 transfixion of gear ring, the speed ratio of eccentric hoop 307 and planetary gear 207 is equal to-ZC/(ZB-ZC), and partially
Thimble 307 is opposite with the direction of rotation of planetary gear 207；
Camshaft phase and lift Principles of Regulation are as follows：
As shown in figs. 7 a and 7b, when eccentric hoop 307 around central axis 102 from the rotate counterclockwise of cam axle top dead center 106
OneDuring angle, camshaft 100 (because camshaft 100 is fixedly connected with planetary gear 207, and is same pivot -- cam
Axle axis 101, the phase of planetary gear 207 is the phase for representing camshaft 100) also in company with eccentric hoop 307 around central axis
102 revolution one counterclockwiseAngle, camshaft lift increases an amount Δ, meanwhile, camshaft 100 also can be around camshaft axis
101 turn clockwise a γ angle (size at γ angles is determined by the parameter of K-H-V mechanisms), now, with the increasing of cam lift
Greatly, γ angles also increase (setting is clockwise for just)；
As shown in Fig. 7 a and Fig. 7 c, when eccentric hoop 307 turns clockwise around central axis 102 from cam axle top dead center 106
OneDuring angle, camshaft 100 is also in company with eccentric hoop 307 around the revolution one clockwise of central axis 102Angle, camshaft lift
Increase an amount Δ, meanwhile, camshaft 100 also can around 101 rotate counterclockwise of camshaft axis, one γ angle, now, with
The increase of cam lift, γ angles reduce；
As figures 8 a and 8 b show, when eccentric hoop 307 turns clockwise around central axis 102 from camshaft lower dead center 107
OneDuring angle, camshaft 100 is also in company with eccentric hoop 307 around the revolution one clockwise of central axis 102Angle, camshaft lift
Increase an amount Δ, meanwhile, camshaft 100 also can be around 101 rotate counterclockwise of camshaft axis, one γ angle, now, with convex
The reduction of lift is taken turns, γ angles also reduce；
As shown in Fig. 8 a and Fig. 8 c, when eccentric hoop 307 around central axis 102 from the rotate counterclockwise of camshaft lower dead center 107
OneDuring angle, camshaft 100 is also in company with eccentric hoop 307 around the revolution one counterclockwise of central axis 102Angle, meanwhile, camshaft
100 can also turn clockwise a γ angle around camshaft axis 101, now, with the reduction of cam lift, the increase of γ angles；
γ angles represent valve timing angle, and when γ angles increase (clockwise direction), valve timing shifts to an earlier date；Conversely, working as γ
When angle reduces, valve timing delay；
The direction of rotation of eccentric hoop 307 is always with valve timing γ angle direction of rotation on the contrary, i.e. when eccentric hoop 307 is clockwise
During rotation, γ angles then rotate counterclockwise, or valve timing delay；When 307 rotate counterclockwise of eccentric hoop, the then dextrorotation of γ angles
Turn, or valve timing shifts to an earlier date；
And camshaft axis 101 rotates along running orbit 104 from cam axle top dead center 106 to camshaft lower dead center 107
When, no matter clockwise or counterclockwise, valve stroke always increases；Camshaft axis 101 is along running orbit 104 from camshaft
Lower dead center 107 to cam axle top dead center 106 rotate when, no matter clockwise or counterclockwise, valve stroke always reduces；
In a word, the camshaft phase and lift regulative mode that the present invention is provided are summarized as follows：
Firstth, the anglec of rotation of eccentric hoop 307 uniquely determines camshaft phase and lift, when not changing eccentric hoop 307
The anglec of rotation when, camshaft phase and lift will keep original state constant, as long as this also means that control eccentric hoop 307
The anglec of rotation, with regard to the required phase of camshaft 100 and lift can be obtained；Further, the phase of adjustment axis 302 is uniquely corresponding to partially
The anglec of rotation of thimble 307, therefore change lift and phase that the phase of adjustment axis 302 is equal to change camshaft 100.
Secondth, when camshaft axis 101 revolves along running orbit 104 from cam axle top dead center 106 to camshaft lower dead center 107
When turning, no matter clockwise or counterclockwise, valve stroke always increases；When camshaft axis 101 is along running orbit 104 from cam
Axle lower dead center 107 to cam axle top dead center 106 rotate when, no matter clockwise or counterclockwise, valve stroke always reduces；
3rd, the direction of rotation of eccentric hoop 307 is always opposite with valve timing γ angle direction of rotation；
3rd, reducing gear 300
As shown in Fig. 9, Figure 10 and Figure 11, the reducing gear 300 is fewer differential teeth planetary wheel reducing gear, including：Bolt
309, latch disk 310, at least one latch 311, fewer differential teeth planetary wheel 312, fewer differential teeth planetary wheel inner periphery 313, few tooth
Poor planetary gear 314, few teeth difference gear ring 315, few teeth difference annular gear teeth 316, pin hole 317, annular groove 318, latch disk axis
319, eccentric wheel 320, eccentric wheel inner periphery 321, eccentric wheel outer cylinder surface 322, eccentric wheel 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 wheel eccentric amount e；
One end of latch disk 310, the end of adjustment axis 302, latch disk axis 319 are fixedly installed to by bolt 309
Overlapped with adjustment axis axis 301 and electrical axis 332；
Along the distance radius R of latch disk axis 3191Circumference on, be fixedly installed and be uniformly distributed 4 to 12 latches
311, it is being R apart from the rotation axis of fewer differential teeth planetary wheel 312 (axis is overlapped with eccentric wheel axis 323) radius1Circumference on,
Be uniformly distributed with the quantity identical pin hole 317 of latch 311, the diameter of the pin hole 317 is equal to the diameter of latch 311 and twice is inclined
Heart wheel eccentric amount e sum (because when latch disk 310 and fewer differential teeth planetary wheel 312 rotate, due to their rotation axis
An eccentric wheel eccentric amount e is differed, the gap of 2e sizes is left between pin hole 317 and latch 311, is allowed to not send out each other
Raw movement interference)；
The other end of latch disk 310 slideably fits together with fewer differential teeth planetary wheel 312, is fixedly mounted on latch disk
Latch 311 on 310 is then inserted in the pin hole 317 opened up on corresponding fewer differential teeth planetary wheel 312；
Described fewer differential teeth planetary wheel inner periphery 313 is rotatably installed on eccentric wheel outer cylinder surface 322,
And eccentric wheel 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, adjustment axis axis 301 and electrical axis 332 are overlapped；
Shell 324 is fixed in (not shown) transfixion on cylinder cap by bolt 329；
Eccentric wheel axis 323, the rotation axis of eccentric wheel outer cylinder surface 322, the rotation axis of fewer differential teeth planetary wheel 312 are complete
Portion is overlapped；
Described motor shaft 331 is fixedly connected with eccentric wheel 320, electrical axis 332 and the eccentric wheel 320 of motor shaft 331
Inner periphery 321 axis overlap；
When the phase angle of adjustment axis 302 that angular transducer 109 (Fig. 1) is perceived is sent to the control unit of internal combustion engine
When (ECU is not shown), ECU obtains internal-combustion engine rotational speed, speed, gear ratio, accelerator pedal position and interior from other places simultaneously
The signals such as combustion engine water temperature, Lubricating Oil Temperature, pressure, and after calculating is handled, execute instruction is sent to motor 330；
After motor 330 receives to instruct from internal combustion engine ECU, the motor axle 331 of motor 330 rotates around electrical axis 332
When, it drives eccentric wheel 320 to rotate, and on the one hand the rotation of eccentric wheel 320 drives fewer differential teeth planetary wheel 312 around latch disk axis
319 equidirectional revolution, it is on the other hand inclined according to the number of teeth of fewer differential teeth planetary wheel 312, the number of teeth of few teeth difference gear ring 315 and eccentric wheel
The fast ratio that heart amount e size is determined is around the counter-rotating of eccentric wheel axis 323；
At the same time, 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
316 collective effect, drives the equidirectional rotation of the constant speed of latch disk 310 fit together with it, and further latch disk 310 drives
Adjustment axis 302, regulation gear 306, eccentric gear 303 and eccentric hoop 307 are rotated, and cam phase and lift are changed；
As shown in Figure 10, along the distance radius R of latch disk axis 3192(R2>R1) circumference on, open up one section of annular groove
318, its annular groove segment angle β are less than 360 degree；Spacer pin 327, its one end is fixedly installed on shell 324 (such as Fig. 9 institutes
Show), the other end is inserted in the annular groove 318 of latch disk 310.Because spacer pin 327 is fixed on transfixion on shell 324,
When latch disk 310 clockwise or counterclockwise when, the two ends of the annular groove 318 on latch disk 310 will touch spacer pin 327,
The spacer pin 327, limits the maximum anglec of rotation of latch disk 310；
Because latch disk 310 is fixedly connected and coaxial line with adjustment axis 302, the rotation of latch disk 310 can be understood as adjusting
The rotation of nodal axisn 302, so the maximum anglec of rotation of limitation latch disk 310, exactly limits the maximum anglec of rotation of adjustment axis 302
Degree, it is to avoid regulation gear 306 and eccentric gear 303 in adjustment axis 302 beyond eccentric gear fan angle alpha scope and
It is disengaged from (as shown in Figure 2)；
It is opposite with the rotation that above-mentioned motor 330 drives eccentric hoop 307 as shown in Fig. 1, Fig. 9, Figure 10 and Figure 11.In internal combustion
In machine operation, when coming from the moment of torsion acting in opposition of camshaft 100 in motor 330, its moment of torsion will be sequentially delivered to eccentric hoop
307th, eccentric gear 303, regulation gear 306, adjustment axis 302, latch disk 310, fewer differential teeth planetary wheel 312 and eccentric wheel 320, by
It is sufficiently small in eccentric wheel eccentric amount e, make the inner periphery 321 of eccentric wheel 320 relative to the support ring outside cylinder of sliding contact
Self-locking is produced between surface 326, its rotary motion can not be further transferred on motor shaft 331, so, it is to avoid camshaft
The interference that 100 motion is moved to motor 330, substantially prolongs electrical machinery life；
As shown in figure 12, a reverse movement transmission condition of self-locking is described：
e<f1*R3/ sin Δs or e<f2*R4/sinΔ
Wherein：The offset of e--- eccentric wheels 320
f1--- the coefficient of friction between eccentric wheel outer cylinder surface 322 and fewer differential teeth planetary wheel inner periphery 313
R3--- the radius of eccentric wheel outer cylinder surface 322
f2--- the coefficient of friction between eccentric wheel inner periphery 321 and support ring outer cylinder surface 326
R4--- the radius of eccentric wheel inner periphery 321
Δ --- act on the azimuth that eccentric wheel is made a concerted effort
In summary, the effect of camshaft drive 200 is：Rotation driving of the bent axle to camshaft 100 is completed, together
When, K-H-V planetary gear mechanisms are constituted together with eccentric hoop 307, the characteristics of motion of camshaft is met K-H-V planet teeth
The requirement of wheel drive mechanism；The effect of eccentric hoop rotating mechanism 10：It is to be advised according to the motion of K-H-V planetary gear mechanisms
Rule, performs the change to the lift of camshaft 100 and phase；And the effect of reducing gear：It is then by the high speed of motor 330, small torsion
Low speed, high pulling torque rotary motion are changed into square rotary motion, are easy to drive adjustment axis 302, and provide reverse self-locking function, are prevented
Destruction of the high pulling torque to motor.
This mechanism may be obviously used for admission cam, it can also be used to exhaust cam.
As the second priority scheme of the present invention, Figure 14 is seen.
From unlike the first priority scheme：Camshaft drive 200, eccentric hoop rotating mechanism 10 and reducing gear
300 are arranged together side by side, and the output par, c latch disk 310 of reducing gear is no longer attached in adjustment axis 302, but directly
Latch disk 310 is fixedly and coaxially connected with the first eccentric hoop 307a, direct drive the first eccentric hoop 307a rotations drive it indirectly
Its eccentric hoop 307 rotates, rather than as the first priority scheme by adjusting gear 306, eccentric gear 303 drives eccentric hoop
307；
In addition to the first eccentric hoop 307a, remaining eccentric hoop 307 drives by camshaft 100 to be rotated, in order to prevent motion
Self-locking, rolling bearing is respectively mounted in the periphery of all eccentric hoops 307；
In addition, reducing gear 300 is fixedly mounted on the front end of fixed support 111, the electrical axis that reducing gear 300 is included
332nd, latch disk axis 319, the surface of cylinder 321, support ring outer cylinder surface 326, few teeth difference gear ring 315, cam in eccentric wheel
Gear ring 208, camshaft sprocket 201, outer ring 202, support set 206 and eccentric hoop rotating mechanism that axle drive mechanism 200 is included
10 rolling bearings 110 included, the first eccentric hoop 307a outer cylinder surfaces 305a, fixed support endoporus 108a, all of above zero
The geometric center or axis of movement of part are overlapped with central axis 102；
And fewer differential teeth planetary wheel 312, fewer differential teeth planetary wheel inner periphery 313, eccentric wheel outer cylinder surface 322, these
The geometric center or axis of movement of part are then overlapped with eccentric wheel axis 323；
The rotation axis of planetary gear 207 and camshaft 100 is overlapped with camshaft axis 101；
It is with the first priority scheme identical：Gear ring 208, the eccentric hoop 307a of planetary gear 207 and first and eccentric hoop
307 have set up a K-H-V planetary gear mechanism jointly, so that driving eccentric wheel 320, few tooth successively by motor 330
Poor planetary gear 312, latch disk 310, the first eccentric hoop 307a rotations, finally change the lift and phase of camshaft 100, it is transported
Dynamic rule and result are identical with the first priority scheme；In addition, when the inversely transmission moment of torsion of camshaft 100, in its reducing gear 300
Support ring outer cylinder surface 326 and eccentric wheel inner periphery 321 between there is self-locking, this also with the first priority scheme phase
Together.
In addition, the program is due to eliminating adjustment axis 302, the regulation part such as gear 306 and eccentric gear 303, in cost
On substantially take advantage, especially, modification of this programme to internal combustion engine is also minimum.
3rd embodiment：On the basis of preferred case, the fast ratio of bent axle and camshaft 100 is changed to 1:1 (to two-stroke
Internal combustion engine), i.e.,：When bent axle rotation is turned around, camshaft 100, which also revolves, to turn around.
The 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.
Fourth embodiment：On the basis of the first preferred case, admission cam and row are changed using an adjustment axis simultaneously
The phase and lift of gas cam.
As shown in figure 13, when adjustment axis 302 drives regulation gear 306, air inlet eccentric gear 303, air inlet eccentric hoop successively
307 and admission cam shaft axis 101 rotate, the final phase and lift for changing admission cam；Meanwhile, adjustment axis 302 also according to
Secondary driving regulation gear 306, exhaust eccentric gear 403, exhaust eccentric hoop 407 and exhaust cam shaft axis 401 are around exhaust center
Axis 402 rotates, the final cam phase and lift for changing exhaust cam shaft 400.
Generally, the parameter of admission cam shaft phase and lift is different from the parameter of exhaust cam shaft phase and lift.
Although embodiment of the present invention is described above in association with accompanying drawing, the present invention is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment is only schematical, guiding, rather than restricted
's.One of ordinary skill in the art is not departing from the feelings of the claims in the present invention institute protection domain under the enlightenment of specification
Under condition, the form of many kinds can also be made, these belong to the row of protection of the invention.
Claims (10)
1. a kind of device for changing valve timing and change valve stroke for internal combustion engine, it includes：Camshaft drive
(200), eccentric hoop rotating mechanism (10) and reducing gear (300), it is characterised in that：
The camshaft drive (200) includes camshaft sprocket (201), outer ring (202), support set (206), planetary gear
(207) and gear ring (208), camshaft sprocket (201) and gear ring (208) are fixedly installed on outer ring (202), outer ring (202)
It is rotatably installed on support set (206), support set (206) is fixed on cylinder cap；Camshaft sprocket (201), gear ring
(208), the axis or pivot of outer ring (202) and (206) four parts of support set are overlapped with central axis (102), when
When bent axle drive cam shaft sprocket wheel (201) rotates, camshaft sprocket (201), gear ring (208) and the part of outer ring (202) three are equal
Driven, make it 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；There is centre-to-centre spacing L between planetary gear (207) and gear ring (208) internal messing, the rotation axis of this two parts, work as gear ring
(208) when being rotated around central axis (102), driving planetary gear (207) rotates 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 driving of axle (100)；
The eccentric hoop rotating mechanism (10) includes at least one eccentric hoop (307), and described eccentric hoop (307) has inside and outside two
There is offset E, described offset E to be equal to planetary gear (207) between individual periphery, the axis of two periphery
Centre-to-centre spacing L between gear ring (208) rotation axis, the 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 is cylindrical
Sliding bearing is installed between post surface (305) and Cam bearing pedestal endoporus (108) sliding contact, contact surface or the axis of rolling is installed
Hold；
The axis of Cam bearing pedestal endoporus (108) and eccentric hoop outer cylinder surface (305) is overlapped with central axis (102), therefore,
The rotation of eccentric hoop (307) is limited at around central axis (102) rotation, and because 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 central axis (102) stated
A K-H-V planetary gear mechanism is built；
According to the characteristics of motion of K-H-V planetary gear mechanisms：
When gear ring (208) is driven in rotation, due to meshing relation, planetary gear (207) and camshaft (100) are revolved by driving
Turn, now valve stroke and timing angle do not change；
When eccentric hoop (307) is driven in rotation, one side eccentric hoop (307) will drive camshaft axis (101) with offset E
For radius, along running orbit (104) and eccentric hoop (307) rotating Vortex, on the other hand due to gear ring (208) and planetary gear
(207) intermeshing restriction relation so that planetary gear (207) is while around camshaft axis (101) counter-rotating；
Movement of the camshaft axis (101) along running orbit (104) changes camshaft (100) relative to valve tappet or valve
The distance or lift of rocking arm, camshaft (100) rotate around own axes (101), change 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. a kind of device for changing valve timing and change valve stroke for internal combustion engine, it includes：Camshaft drive
(200), eccentric hoop rotating mechanism (10) and reducing gear (300), it is characterised in that：
The camshaft drive (200) includes camshaft sprocket (201), outer ring (202), support set (206), planetary gear
(207) and gear ring (208), camshaft sprocket (201) and gear ring (208) are fixedly installed on outer ring (202), outer ring (202)
It is rotatably installed on support set (206), support set (206) is fixed on cylinder cap；Camshaft sprocket (201), gear ring
(208), the axis or pivot of outer ring (202) and (206) four parts of support set are overlapped with central axis (102), when
When bent axle drive cam shaft sprocket wheel (201) rotates, camshaft sprocket (201), gear ring (208) and the part of outer ring (202) three are equal
Driven, make it 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；There is centre-to-centre spacing L between planetary gear (207) and gear ring (208) internal messing, the rotation axis of this two parts, work as gear ring
(208) when being rotated around central axis (102), driving planetary gear (207) rotates 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 driving of axle (100)；
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 to be equal to the centre-to-centre spacing L between planetary gear (207) and gear ring (208) rotation axis；
First eccentric hoop (307a) is rotatably socketed in the endoporus of camshaft (100) axle journal and fixed support (111)
Between (108a), its inner periphery (304a) and camshaft (100) axle journal sliding contact, its outer cylinder surface (305a) is with consolidating
Sliding bearing is installed between fixed rack endoporus (108a) sliding contact, contact surface or rolling bearing is installed；Described fixed support
The axis of endoporus (108a) is overlapped with central axis (102), the outer cylinder surface (305a) of described the first eccentric hoop (307a)
Limited by the support endoporus (108a) contacted, also centered on central axis (102)；
The 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
Close, the outer cylinder surface (305) of described eccentric hoop (307) is limited by the Cam bearing pedestal endoporus (108) contacted,
Centered on central axis (102)；
When the moment of torsion from motor (330) is delivered to latch disk (310) by reducing gear, the rotation of latch disk directly drives
The first eccentric hoop (307a) for being secured to connection rotates around central axis, and the rotation drive of the first eccentric hoop (307a) is other partially
Thimble (307) rotates；
Because 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 been set up jointly；
According to the characteristics of motion of K-H-V planetary gear mechanisms：
When gear ring (208) is driven in rotation, due to meshing relation, planetary gear (207) and camshaft (100) are revolved by driving
Turn, now valve stroke and timing angle do not change；
When the first eccentric hoop (307a) is driven in rotation, on the one hand the first eccentric hoop (307a) will drive camshaft axis
(101) using offset E as radius, along running orbit (104) and the first eccentric hoop (307a) rotating Vortex, on the other hand due to tooth
Enclose (208) and planetary gear (207) intermeshing restriction relation so that planetary gear (207) is while around camshaft axis
(101) counter-rotating；
Movement of the camshaft axis (101) along running orbit (104) changes camshaft (100) relative to valve tappet or valve
The distance or lift of rocking arm, camshaft (100) rotate around own axes (101), change cam relative to valve opening or pass
The angle closed；
That is, the anglec of rotation of the first eccentric hoop (307a) can be uniquely corresponding to valve stroke and valve timing angle.
3. a kind of device for changing valve timing and change valve stroke for internal combustion engine according to claim 1, its
It is characterised by：Described eccentric hoop rotating mechanism (10), including adjustment axis (302), at least one regulation bearing block
(105), at least one regulation gear (306), the eccentric gear (303) and eccentric hoop equal with regulation gear (306) quantity
(307), at least one Cam bearing pedestal (103), camshaft (100) and central axis (102)；
Described adjustment axis (302) is abreast arranged in IC engine cylinder with camshaft (100) and covered, and is rotatably mounted in
In the regulation bearing block (105)；
Described adjustment axis (302) one end is connected with reducing gear (300), and drives it around regulation by reducing gear (300)
Axle axis (301) rotates；
The regulation gear (306) is fixedly mounted in adjustment axis (302), the regulation gear (306) and described eccentric gear
(303) it is 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)；
The rotation of described adjustment axis (302) drives regulation gear (306) rotation, and drives the eccentric gear being meshed therewith
(303) and eccentric hoop (307) around central axis (102) rotate.
4. a kind of device for changing valve timing and change valve stroke for internal combustion engine according to claim 1 or 2,
It is characterized in that：The reducing gear (300) is fewer differential teeth planetary wheel reducing gear, including：Latch disk (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 wheel (320), eccentric wheel inner periphery (321), eccentric wheel outer cylinder surface
(322), eccentric wheel axis (323), shell (324), support ring (325), support ring outer cylinder surface (326), wherein, eccentric wheel
With eccentric wheel eccentric amount e；
Described latch disk (310) is as output shaft with needing powered adjustment axis (302) or the first eccentric hoop (307a) solid
Connect calmly, and connection is overlapped with the rotation axis of connected piece including electrical axis (332)；
Along latch disk axis (319) distance radius R1Circumference on, be fixedly installed and be uniformly distributed 4 to 12 latches
(311) it is being, R apart from fewer differential teeth planetary wheel (312) rotation axis radius1Circumference on, be uniformly distributed with latch (311) quantity
Identical pin hole (317), the diameter of the pin hole (317) be equal to latch (311) diameter and twice eccentric wheel eccentric amount e it
With；
Along latch disk axis (319) distance radius R2Circumference on, open up one section of annular groove (318), its annular groove segment angle β
Less than 360 degree；Spacer pin (327) one end is fixedly installed on shell (324), the annular of other end insertion latch disk (310)
In groove (318)；
The other end of latch disk (310) slideably fits together with fewer differential teeth planetary wheel (312), is fixedly mounted on latch disk
(310) latch (311) on is then inserted in the pin hole (317) opened up on corresponding fewer differential teeth planetary wheel (312)；
Described fewer differential teeth planetary wheel inner periphery (313) is rotatably installed on eccentric wheel outer cylinder surface (322),
And eccentric wheel 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)
Overlapped with latch disk axis (319), adjustment axis axis (301) and electrical axis (332)；
Eccentric wheel axis (323), the rotation axis of eccentric wheel outer cylinder surface (322), fewer differential teeth planetary wheel (312) rotation axis
All overlap；
Described motor shaft (331) is fixedly connected with eccentric wheel (320), the electrical axis (332) and eccentric wheel of motor shaft (331)
(320) axis of inner periphery (321) is overlapped.
5. a kind of device for changing valve timing and change valve stroke for internal combustion engine 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
Execute instruction is sent to motor (330)；
After motor (330) receives to instruct from internal combustion engine ECU, motor (330) motor axle (331) is around electrical axis (332)
During rotation, it drives eccentric wheel (320) rotation, and the rotation of eccentric wheel (320) on the one hand drives fewer differential teeth planetary wheel (312) around slotting
Disk axis (319) equidirectional revolution is sold, on the other hand driving fewer differential teeth planetary wheel (312) inversely revolves around eccentric wheel axis (323)
Turn；
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 (316) it is common
Effect, drives the equidirectional rotation of latch disk (310) constant speed fit together with it, further latch disk (310) driving regulation
Axle (302), regulation gear (306), eccentric gear (303) and eccentric hoop (307) rotation.
6. a kind of device for changing valve timing and change valve stroke for internal combustion engine 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
Execute instruction is sent to motor (330)；
After motor (330) receives to instruct from internal combustion engine ECU, motor (330) motor axle (331) is around electrical axis (332)
During rotation, it drives eccentric wheel (320) rotation, and the rotation of eccentric wheel (320) on the one hand drives fewer differential teeth planetary wheel (312) around slotting
Disk axis (319) equidirectional revolution is sold, while according to the number of teeth of fewer differential teeth planetary wheel (312), the number of teeth of few teeth difference gear ring (315)
The fast ratio determined with the size of eccentric wheel eccentric amount e is around eccentric wheel axis (323) counter-rotating；
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 (316) it is common
Effect, drives the equidirectional rotation of latch disk (310) constant speed fit together with it, further latch disk (310) direct drive
First eccentric hoop (307a) or even the rotation of remaining eccentric hoop (307).
7. a kind of device for changing valve timing and change valve stroke for internal combustion engine according to claim 4, its
It is characterised by：In internal combustion engine operation, when coming from the moment of torsion acting in opposition of camshaft (100) when motor (330), its moment of torsion
To be sequentially delivered to eccentric hoop (307), eccentric gear (303), regulation gear (306), adjustment axis (302), latch disk (310),
Fewer differential teeth planetary wheel (312) and eccentric wheel (320), the eccentric wheel eccentric amount e sufficiently small due to existing can make eccentric wheel
(320) inner periphery (321) produces self-locking relative between the support ring outer cylinder surface (326) of sliding contact.
8. a kind of device for changing valve timing and change valve stroke for internal combustion engine according to claim 4, its
It is characterised by：In internal combustion engine operation, when coming from the moment of torsion acting in opposition of camshaft (100) when motor (330), its moment of torsion
Eccentric hoop (307), the first eccentric hoop (307a), latch disk (310), fewer differential teeth planetary wheel (312) and bias will be sequentially delivered to
Take turns (320), the eccentric wheel eccentric amount e sufficiently small due to existing, the inner periphery (321) of eccentric wheel (320) can be made relative
Self-locking is produced between the support ring outer cylinder surface (326) of sliding contact.
9. a kind of device for changing valve timing and change valve stroke for internal combustion engine according to claim 3, its
It is characterised by：Using an adjustment axis (302) while changing the phase and lift of admission cam and exhaust cam.
10. a kind of dress for changing valve timing and change valve stroke for internal combustion engine according to claim 1 or 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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| CN106870057B (en) * | 2017-04-12 | 2023-01-10 | 吉林大学 | Device for adjusting pressure in cylinder before direct injection engine is started directly |
| CN108106853B (en) * | 2017-12-19 | 2019-09-10 | 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 |
| CN109184842B (en) * | 2018-10-12 | 2023-08-08 | 福泰动力有限公司 | Valve driving device and valve driving system |
| CN110295964B (en) * | 2019-05-09 | 2021-03-16 | 湖南大兹动力科技有限公司 | Internal combustion engine valve control device regulated by motor |
| IT201900016283A1 (en) * | 2019-09-13 | 2021-03-13 | Piaggio & C Spa | COMBUSTION ENGINE WITH DEVICE FOR CHANGING THE PHASE OF THE VALVES OF A CAMSHAFT |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446213A (en) * | 2007-11-30 | 2009-06-03 | 株式会社椿本链索 | Timing chain drive unit |
| WO2010113747A1 (en) * | 2009-04-03 | 2010-10-07 | Ntn株式会社 | Variable valve timing device |
| WO2014010550A1 (en) * | 2012-07-12 | 2014-01-16 | 日立オートモティブシステムズ株式会社 | Variable valve device for internal combustion engine |
| JP5687727B2 (en) * | 2013-04-26 | 2015-03-18 | 日立オートモティブシステムズ株式会社 | Variable valve operating device for internal combustion engine |
-
2016
- 2016-10-25 CN CN201610938957.XA patent/CN106285814B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446213A (en) * | 2007-11-30 | 2009-06-03 | 株式会社椿本链索 | Timing chain drive unit |
| WO2010113747A1 (en) * | 2009-04-03 | 2010-10-07 | Ntn株式会社 | Variable valve timing device |
| WO2014010550A1 (en) * | 2012-07-12 | 2014-01-16 | 日立オートモティブシステムズ株式会社 | Variable valve device for internal combustion engine |
| JP5687727B2 (en) * | 2013-04-26 | 2015-03-18 | 日立オートモティブシステムズ株式会社 | Variable valve operating device for internal combustion engine |
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