CN107327328A - A kind of VVT drive device - Google Patents
A kind of VVT drive device Download PDFInfo
- Publication number
- CN107327328A CN107327328A CN201710788204.XA CN201710788204A CN107327328A CN 107327328 A CN107327328 A CN 107327328A CN 201710788204 A CN201710788204 A CN 201710788204A CN 107327328 A CN107327328 A CN 107327328A
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- interior
- pawl
- indexing
- camshaft
- drive device
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- 239000000446 fuel Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 18
- 230000008859 change Effects 0.000 abstract description 9
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 72
- 239000012530 fluid Substances 0.000 description 23
- 239000007937 lozenge Substances 0.000 description 14
- 230000001360 synchronised effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 4
- 230000007306 turnover Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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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 discloses a kind of VVT drive device, intake and exhaust cam axle is driven to rotate by engine crankshaft by chain or belt.Camshaft right-hand member is supported in engine body by bearing arrangement.The device can adjust intake and exhaust cam axle phase according to engine real-time working condition, realize valve timing.The present invention makes the engine breathing door opening time change with engine operating condition and realize the morning of valve and open or evening pass, so that the optimal distribution demand under meeting Different Work Condition of Engine.The present invention proposes a kind of discrete type VVT drive device used cooperatively based on indexing pawl with sliding pawl set, the relative rotation of sliding pawl set and camshaft is realized by the interaction for indexing pawl with sliding pawl covers, so as to realize that the cam phase on camshaft is variable, valve-opening time is set to be in perfect condition all the time.
Description
Technical field
The invention belongs to valve timing apparatus technical field, more particularly to a kind of VVT drive device.
Background technology
The valve opening and closing time of conventional engine valve mechanism are changeless, are not changed with engine operating condition
Become, it can only ensure engine in a certain range of speeds in most preferably with gaseity, it is impossible to take into account combustion during low engine speed
Dynamic property when oily economy and high speed.
Variable Valve Timing Technique of IC Engine is that engine breathing door morning opens or evening closes optimal to realize by changing
Valve timing, valve-control is in perfect condition all the time, help to improve the fuel economy of low engine speeds active section
With the torque output of big torque active section, fuel economy during engine low load can be ensured, can ensure that engine is high again
Power performance during load.VVT also contributes to the instantaneous start and stop of hybrid electric vehicle engine simultaneously
Performance.
The content of the invention
The present invention has designed and developed a kind of VVT drive device, it is therefore an objective to realizes that engine breathing door is early and opens
Or evening closes, to meet the optimal distribution demand under Different Work Condition of Engine.
The technical scheme that the present invention is provided is：
A kind of VVT drive device, including：
Shell, it is in the outer guide that multiple protrusions are evenly distributed on hollow cylindrical, the outer casing inner wall；It is described outer
One end of guide rail is provided with wedge-shaped working face；
Sleeve, it is in hollow cylindrical and is co-axially located in shell, has been evenly distributed on the sleeve lining many
The interior guide rail of individual protrusion；One end of the interior guide rail is provided with wedge-shaped working face；
Outer indexing pawl, it is set on one end outside the sleeve, the outer indexing pawl and is provided with and the outer guide phase
Multiple outer indexing teeth circumferentially arranged are provided with the outer guide groove of cooperation, the inner side end of the outer indexing pawl；
Outer sliding pawl set, its other end being set in outside the sleeve and the outer sliding pawl set are matched somebody with somebody with sleeve by prismatic pair
Close；Multiple sliding pawls of outer wedge shape circumferentially arranged are provided with the outer sliding pawl set inner side end；
Camshaft, it is co-axially located in the sleeve；
Interior indexing pawl, it is set between sleeve and camshaft, is provided with and is matched somebody with somebody with the interior guide rail on the interior indexing pawl
Multiple interior indexing teeth circumferentially arranged are provided with the interior guide groove closed, the inner side end of the interior indexing pawl；
Interior sliding pawl set, it is set between sleeve and camshaft and the interior sliding pawl set is matched somebody with somebody with camshaft by prismatic pair
Close；Multiple sliding pawls of interior wedge shape circumferentially arranged are provided with the interior sliding pawl set inner side end；
Wherein, the wedge-shaped working face of the outer indexing tooth and outer guide is engaged with the sliding pawl of outer wedge shape, makes outer indexing pawl
A cycle is moved back and forth along axis, the outer sliding pawl set can be driven to rotate to an angle；The interior indexing tooth and interior guide rail
Wedge-shaped working face be engaged with the interior sliding pawl of wedge shape, interior indexing pawl is moved back and forth a cycle along axis, institute can be driven
Interior sliding pawl set is stated to rotate to an angle；The outer sliding pawl set is opposite with interior sliding pawl set direction of rotation.
Preferably, the both ends of the surface of the shell are in open type, and the left and right ends of the shell are dismountable respectively to be set
There are left end cap and right end cap.
Preferably, one end of the shell is fixed with timing sprocket, and it makes engine bent by coordinating with timing chain
Axle can drive shell to rotate.
Preferably, one end of the shell is fixed with timing belt pulley, and it makes engine bent by coordinating with Timing Belt
Axle can drive shell to rotate.
Preferably, the outer sliding pawl set end face outside is provided with external spiral spring, the end face outside of the outer indexing pawl
It is connected with the first oil pocket.
Preferably, the end face outside of the interior sliding pawl set is provided with inside spin spring, the outboard end of the interior sliding pawl set
Face is connected with the second oil pocket, and the end face outside of the interior indexing pawl is connected with the 3rd oil pocket.
Preferably, it is provided with the camshaft in support ring, the shell and is provided with back-up ring, the support ring and gear
Circle coordinates, so that camshaft can be supported in shell.
Preferably, it is provided with sealing gasket on the inside of the support ring.
Preferably, the first fuel feed hole, the second fuel feed hole and three fuel feed holes are entered on the camshaft, first oil-feed
Hole, the second fuel feed hole and enter three fuel feed holes and connected respectively with the first oil pocket, the second oil pocket and the 3rd oil pocket.
Preferably, first fuel feed hole is connected by flexible pipe with the first oil pocket, second fuel feed hole and is entered three and is entered
Oilhole is connected by the oil duct being arranged in camshaft with the second oil pocket and the 3rd oil pocket respectively.
The beneficial effect of VVT drive device of the present invention is：The VVT that the present invention is provided
Drive device can the VVT convenient for assembly that inlet and exhaust valve is realized in engine breathing camshaft one end, can not only have
Effect ground improves the fuel consumption and power output of conventional fuel oil engine, moreover it is possible to which the start and stop for optimizing hybrid electric vehicle engine turn
Speed control, improves instantaneous starting rotating speed of hybrid electric vehicle engine etc..Therefore the VVT that the present invention is designed drives
Dynamic device, there is important practical significance and application prospect to orthodox car and automobile engine using new energy resources control.
Brief description of the drawings
Fig. 1 is VVT driving device structure figure.
Fig. 2 is the outer-cavity structure figure of VVT drive device.
Fig. 3 is the inner-cavity structure figure of VVT drive device.
Fig. 4 is VVT driving device structure sectional view.
Fig. 5 is that the outer indexing pawl of VVT drive device slides extreme position schematic diagram.
Fig. 6 is the left end cap structure chart of VVT drive device.
Fig. 7 is the camshaft structure figure of VVT drive device.
Fig. 8 is the shell and chain sprocket structure figure of VVT drive device.
Fig. 9 is the outer sliding pawl noose composition of VVT drive device.
Figure 10 is the tube-in-tube structure figure of VVT drive device.
Figure 11 is the interior sliding pawl noose composition of VVT drive device.
Figure 12 is the outer indexing pawl structure chart of VVT drive device.
Figure 13 is the interior indexing pawl structure chart of VVT drive device.
Figure 14 is the valve displacement change timing curve map that variable valve timing apparatus is realized.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
As Figure 1-4, the invention provides a kind of VVT drive device, specifically include：Intake and exhaust cam
Axle 111, timing sprocket 112, the camshaft shaft shoulder 113, oilhole 114, shell 115, right end cap 116, left end cap 117, flexible pipe 118,
Sleeve 119, outer indexing pawl 120, outer guide 121, outer sliding pawl set 122, external spiral spring 123, sealing gasket 124, support ring 125,
Jump ring 126, inside spin spring 127, interior sliding pawl set 128, interior guide rail 129, interior indexing pawl 130, oil duct 301, oil pocket 302, oil pocket
303, oil duct 304, oil pocket 305, oil duct 306, boss 401, the shaft shoulder 402, the shaft shoulder 403, projection 501, slideway 502, projection 601,
Guide groove 602.
VVT driving device structure figure by chain timing sprocket 112 as shown in figure 1, be engaged, by starting
Machine crankshaft drives intake and exhaust cam axle 111 to rotate, and its rotation direction is as shown in the direction of arrow in Fig. 1.The right-hand member of camshaft 111 passes through
Bearing arrangement is supported in engine body.The device can adjust the phase of intake and exhaust cam axle 111 according to engine real-time working condition,
Realize valve timing.The chain can use belt and timing belt pulley with timing sprocket 112.
As Figure 1 and Figure 4, VVT drive device includes advance/retard mechanism shell 115, right end cap 116, left end
Lid 117 and camshaft 111, and sleeve 119 in Fig. 2, outer indexing pawl 120 and outer sliding pawl cover sealing gasket 124 in 122, Fig. 3,
Support ring 125, interior sliding pawl set 128 and interior indexing pawl 130, and its oil pocket 302, oil pocket 303, the oil pocket that each parts of Fig. 4 are constituted
305。
Timing sprocket 112 in VVT drive device is fixed on the right-hand member of shell 115.Wherein in shell 115
Equally distributed outer guide 121 is provided with wall, as shown in figure 8, shown in the shape and position of outer guide 121 and Fig. 2
Outer indexing pawl 120 and guide groove 602 and wedge surface shape on outer sliding pawl set 122 match.As shown in figure 9, sliding pawl covers 122 outside
On single wedge surface circular arc width could be arranged to 10 degree or 15 degree and circumferentially etc. radian is uniformly distributed, outer sliding pawl set 122 leads to
The projection 501 being evenly arranged on inwall circumference is crossed to match with the slideway 502 on the outer wall of sleeve 119, and outer sliding pawl set 122 can be
Slid axially on the outer wall of sleeve 119 along slideway 502, by the limited support of external spiral spring 123 when being slided to right-hand member.Therefore sleeve
119 cover 122 synchronous axial systems with outer sliding pawl all the time when circumferencial direction is rotated.
The outer guide 121 that outer indexing pawl 120 and outer sliding pawl are covered on 122, and its inwall of shell 115 is assembled in outside sleeve 119
Position relationship on wall is as shown in Figures 2 and 4.Sleeve 119 is the shaft shoulder on boss 401 and camshaft 111 by left end cap 117
402 are supported on camshaft 111.Left end cap 117 is fixed on the left end of shell 115 by bolt arrangement and completed to sleeve 119
Left end support and sealing, and the inner ring of boss 401 on left end cap 117 completed to cam by bearing and ring structure
The left end support of axle 111 and sealing.Outer indexing pawl 120 constitutes one with left end cap 117 and its shell 115 and the outer wall of sleeve 119
Sealed annular oil cavity 302, wherein using sealing ring sealing between sleeve 119 and the outer indexing left end of pawl 120 and shell 115.
Fluid in oil pocket 302 feeds what is completed by oil duct 301, and its inner fluid of oil pocket 302 is to control oil storage to set by Engine ECU
Available oil is adjusted.
Right end cap 116 is fixed on the right-hand member of shell 115, and the shaft shoulder of right end cap 116 and camshaft 111 by bolt arrangement
Supported between 403 using bearing arrangement, to ensure the relative rotation of shell 115 and camshaft 111.In the inner ring right-hand member of shell 115
Completed with the correspondence position of the shaft shoulder 402 of camshaft 111 by installing sealing gasket 124 and support ring 125 to the right-hand member of sleeve 119
Sealing and sealing and support to the inner ring right-hand member of shell 115.Sealing gasket 124 and support ring 125 are fixed on cam by jump ring 126
On axle 111, and the two can realize relative to shell 115 with camshaft 111 and rotate.Outer sliding pawl set 122 and sealing gasket 124 and support
Supported between ring 125 by external spiral spring 123, when apparatus structure is installed, external spiral spring 123 presets certain preload,
And the pretightning force of its initial position keeps poised state with the inner fluid pressure of left side oil pocket 302.
As shown in Figure 10, equally distributed interior guide rail 129, the shape and cloth of interior guide rail 129 are provided with the inwall of sleeve 119
Seated position matches with the guide groove 603 and wedge surface shape on the interior sliding pawl set 128 and interior indexing pawl 130 shown in Fig. 3.As schemed
Shown in 11, the wedge surface width of interior sliding pawl set 128 circumferentially waits radian to be uniformly distributed, and wedge surface width and the interior width phase of guide rail 129
Plus (10 degree or 15 degree) are consistent with the lozenges width on outer sliding pawl set 122, to ensure the drive device relative direction angle of rotation
Degree is consistent.Interior sliding pawl covers 128 shape of projection 601 and the slideway phase of the left end of camshaft 111 by being evenly arranged on inwall circumference
It coincide, interior sliding pawl set 128 is slid axially on camshaft along slideway, limited when being slided to left end by inside spin spring 127
Position support.Therefore sliding pawl set 128 is synchronous with camshaft 111 all the time when circumferencial direction is rotated in.
Interior guide rail 129 and interior sliding pawl set 128 and initial positional relationship such as Fig. 3 of interior indexing pawl 130 on the inwall of sleeve 119
With shown in 4.In camshaft right-hand member, the shaft shoulder 402 and the inwall of sleeve 119 and interior indexing pawl 130 of camshaft 111 constitute a sealing
Annular oil cavity 305, and inside between the indexing right-hand member of pawl 130 and sleeve 119 using sealing ring sealing, the fluid in oil pocket 305
Feed what is completed by oil duct 306, its inner fluid of oil pocket 305 is to control oil-stocking equipment fuel control by Engine ECU；
Camshaft left end, left end cap 117 constitutes sealed an annular oil cavity 303, oil pocket with the inwall of sleeve 119 and interior sliding pawl set 128
Fluid in 303 feeds what is completed by oil duct 304, wherein boss 401 and interior sliding pawl cover 128 left ends and the inwall of sleeve 119 it
Between using sealing ring sealing.By the limited support of inside spin spring 127 between left end cap 117 and interior sliding pawl set 128, when mounted
Inside spin spring 127 presets certain pretightning force, and its pretightning force size coordinates the inner fluid pressure of left and right sides oil pocket 303 and 305
In initial equilibrium conditionses.
The fluid supply hole 114 of oil duct 301,304 and 306 is arranged on the annular groove on the camshaft shaft shoulder 113 Nei such as Fig. 1
Shown, the annular groove on the camshaft shaft shoulder 113 is overlapping with the support position of engine body inner support camshaft 111, ensures
The oil-stocking equipment fuel feeding that oil duct 301,304 and 306 is connected respectively when being rotated with camshaft 111 is smooth.Oil duct 301,304 and 306
It can first be processed during processing using by the way of through hole, unnecessary through hole is refilled afterwards, and guarantee does not influence camshaft 111
Dynamic equilibrium when intensity and the rotation of camshaft 111, its oil duct design sketch is as shown in Figure 4.Wherein oil duct 301 is soft by rubber
Pipe 118 connects what the upper oil hole of camshaft 111 was realized with the right-hand member upper oil hole insertion of shell 115, and the setting of flexible pipe 118 can ensure cam
The opposite shell 115 of axle 111 does not influence the fluid of oil duct 301 to supply when turning over certain angle in the same direction or inversely.
VVT drive device is in direction initial rotation as shown in Figure 1 under timing sprocket 112 drives, shell
115 with the synchronous axial system of sprocket wheel 112, and now each part is in initial installation equilbrium position, three seal oil chambers in the drive device
302nd, 303,305 inner fluid pressure keep poised state with corresponding axial screw initial tension of spring respectively.Therefore in engine
During initialization, outer indexing pawl 120 and outer sliding pawl set 122 in the drive device, interior sliding pawl set 128 and interior indexing pawl 130 exist
Keep initial position constant on the axial direction of camshaft 111.
Mode of operation during the VVT drive device that the present invention is provided has two.
Mode of operation one：Oil mass and oil pressure do not change in both sides oil pocket 303 and 305 in holding sleeve 119.
The rotation direction of sprocket wheel 112 shown in reference picture 1, under when outer indexing pawl 120, oil pressure is acted in oil pocket 302 to the right
When end is mobile, outer indexing pawl 120 can only be slided to the right vertically under the guide effect of outer guide 121, and outer guide 121 is fixed
The opposing cam axle axial direction remains stationary on the inwall of shell 115.Outer indexing pawl 120 utilizes the indexing pawl and guide groove of itself
Structure promotes outer sliding pawl set 122 to be slided to right-hand member, because the guiding of the projection 501 on 122 inwalls of outer guide 121 and outer sliding pawl set is made
With, and outer guide 121 when being rotated by direction as shown on the inwall of shell 115 formed necessarily with wedge structure on outer sliding pawl set 122
Inertial force, promote the relatively outer indexing pawls 120 of outer sliding pawl set 122 not produce relative rotation.
Due to the guiding and position-limiting action of outer guide 121, when outer indexing pawl 120 is made with the inner fluid of oil pocket 302 is increased
Firmly lower promote is slided when pawl set 122 slides into the right extreme position as shown in figure 5, external spiral spring 123 is compressed to a fixed length
Degree.Now the lozenges of the right-hand member lozenges of outer guide 121 and outer sliding pawl set 122 just coincide, and outer guide 121 is in outer helical spring
123 elastic restoring force and shell 115 acts on lower quick sliding by covering 122 wedge shapes with outer sliding pawl with the inertia force of sprocket wheel 112
The crosspoint in face.It is quick in the case where the inner fluid pressure of oil pocket 302 is with Engine ECU control afterwards to reduce and its external spiral spring 123
Under the effect such as elastic restoring force, outer sliding pawl set 122 is counter to be pushed away outer indexing pawl 120 and is slided to left end, due to outer guide 121 and outer sliding pawl
The lozenges structure of set 122 promotes the relative outer guide 121 of outer sliding pawl set 122 to turn over certain circumferential angle in a circumferential direction.Cause
Outer guide 121 on the inwall of shell 115 keeps geo-stationary in a circumferential direction with outer indexing pawl 120, i.e., outer sliding pawl covers 122 phases
The rotation of opposite direction is produced to the synchronous axial system of shell 115, turning circumference angle is the single lozenges of outer sliding pawl set 122
Corresponding circumference arc.
Outer sliding pawl set 122 is to be limited on sleeve 119 to horizontally slip by the projection 501 on inwall, and in circumferencial direction
Synchronous with sleeve 119 all the time during rotation, now sleeve 119 can turn over corresponding circumference arc with 122 opposite shells 115 of outer sliding pawl set
Degree.Because both sides oil pocket 303 in sleeve 119 and oil pocket 305 keep relative balance state, camshaft 111 keeps synchronous with sleeve 119
Rotating speed, camshaft 111 turns over corresponding circumference arc, therefore camshaft 111 in the opposite direction with the opposite shell 115 of sleeve 119
Can certain corner delayed relative to sprocket wheel 112.Now valve timing drive device the rotating backward by therein mechanism
Realize delay of the overhead cam of camshaft 111 with respect to the rotational angle of sprocket wheel 112, i.e., so-called valve delay closure or openness, its
Charging efficiency is favorably improved, is that the high rotating speed of engine and high power work section provide safeguard.
, can be by Engine ECU according to vehicle driving demand repetition aforesaid operations mistake according to vehicle driving-cycle real-time change
Journey, realizes that valve is secondary or three timings, and lozenges width of its timing number of times in speed and outer sliding pawl set 122 determines (to join
Examine engine variable-valve timing range ± 30 degree).When the vehicle is stopped, Engine ECU control VVT control dress
Put and return to initial rest position.
It is low to middle low speed or in by low speed when speed when mode of operation one gradually increases suitable for vehicle speed of operation
The VVT of Engine ECU correspondence control when speed changes to high speed or by high speed to high speed.
Mode of operation two：Oil mass and oil pressure in the outside oil pocket 302 of sleeve 119 is kept not change.
Outer indexing pawl 120 shown in reference picture 2 and outer sliding pawl cover 122 present positions, when the inner fluid pressure of oil pocket 302 with
When the elastic force of external spiral spring 123 keeps relative balance state, outer indexing pawl 120 and outer sliding pawl set 122 are with outer guide 121 and set
With respect to remains stationary state during the rotation of cylinder 119.Now by increasing fluid oil mass and oil pressure in oil pocket 303 and reducing oil pocket
Fluid oil mass and oil pressure in 303, the inner fluid of oil pocket 305 promote interior indexing pawl 130 to be slided along the axial direction left end of camshaft 111
Move, interior indexing pawl 130 promotes interior sliding pawl set 128 to be slided to left end using the indexing pawl and guide rail slot structure of itself.Because of interior guide rail
129 and interior sliding pawl cover the guide effects of 128 inwall upper protruding blocks 601, and its inner fluid pressure of the oil pocket of left and right two 303 and 305 is made
With change is controlled in real time with Engine ECU, sliding pawl in before interior indexing pawl 130 arrival specified location is set to cover 128 relatively interior indexing
Pawl 130 will not produce relative rotation.
Due to the guiding and position-limiting action of interior guide rail 129, when interior indexing pawl 130 is pushed away under the inner fluid active force of oil pocket 305
When sliding pawl set 128 slides into extreme position to the left in dynamic (position of outer guide 121 in reference picture 5), inside spin spring 127 is compressed
To certain length.Now the lozenges of the interior left end lozenges of guide rail 129 and interior sliding pawl set 128 just coincide, and interior guide rail 129 is in oil
The inner fluid pressure of chamber 303 and the lower quick sliding of the elastic restoring force of inside spin spring 127 effect with interior sliding pawl by covering 128 lozenges
Crosspoint.Afterwards in the case where the inner fluid pressure of oil pocket 305 is with Engine ECU control quickly reduce, the inner fluid pressure of oil pocket 303 with
Under the effects such as the elastic restoring force of the lower quick increase of Engine ECU control and its inside spin spring 127, interior sliding pawl set 128 is counter to be pushed away
Interior indexing pawl 130 is slided to right-hand member, because the lozenges structure of interior guide rail 129 and interior sliding pawl set 128 promotes interior sliding pawl to cover 128 phases
Internal guide rail 129 turns over certain circumferential angle in a circumferential direction.Now relative to the quick increasing of the inner fluid pressure of oil pocket 303
Plus, the inertial force that the interior lozenges structure of guide rail 129 is formed when being rotated with sleeve 119 can be ignored, and promote interior lead
Rail 129 quickly slips over 128 lozenges of interior sliding pawl set and entered in guide groove 603.
It is because guide rail 129 keeps geo-stationary in a circumferential direction with interior indexing pawl 130 on the inwall of sleeve 119, i.e., interior
The synchronous axial system generation that sliding pawl covers 128 relative sleeves 119 rotates in same direction, and its turning circumference angle covers 128 single wedges for interior sliding pawl
The circular arc width sum of the corresponding circumference arc in shape face and interior guide rail 129, its value is equal to the outer single lozenges correspondence of sliding pawl set 122
Circumference arc.Sleeve 119 is with the synchronous axial system of shell 115 simultaneously, and camshaft 111 is with the interior indexing opposite shell 115 of pawl 130 with phase
It is equidirectional to turn over corresponding circumference arc in advance, therefore camshaft 111 turns over certain angle in advance with respect to sprocket wheel 112.Now should
VVT drive device realizes the overhead cam of camshaft 111 with respect to sprocket wheel by rotating in same direction for therein mechanism
112 rotational angles in advance, i.e., so-called valve shifts to an earlier date closure or openness, and it promotes valve overlap to increase, so improve row
Gas effect, helps to improve the fuel economy of low engine speeds active section and the torque output of big torque active section.
, can be by Engine ECU according to vehicle driving demand repetition aforesaid operations mistake according to vehicle driving-cycle real-time change
Journey, realizes that valve is secondary or three timings, and the lozenges width that its timing number of times is put by speed and sliding pawl is determined.When vehicle stops
When only, Engine ECU control variable valve timing control apparatus returns to initial rest position.
When example two is gradually reduced suitable for vehicle speed of operation, when speed is by dropping at a high speed high speed or by high speed
Engine ECU correspondence control when dropping to middle low speed or being dropped to low speed by middle low speed or increased torque output by motor instant
VVT.
During vehicle actual travel, it is real-time that the VVT drive device can be detected according to different sensors
Speed, engine speed, corner of sprocket wheel opposing cam axle etc., different oil pocket inner fluids are adjusted by Engine ECU in real time
Oil mass and oil pressure change are come the position relationship for changing the inside and outside indexing pawl of sleeve 119 and sliding pawl set, and control camshaft 111 is relative to chain
The in the same direction or backwards rotation of wheel 112, realizes shifting to an earlier date or delayed, its corresponding air inlet for the overhead cam phase of intake and exhaust cam axle 111
Door change in displacement timing curve is as shown in figure 14.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (10)
1. a kind of VVT drive device, it is characterised in that including：
Shell, it is in the outer guide that multiple protrusions are evenly distributed on hollow cylindrical, the outer casing inner wall；The outer guide
One end be provided with wedge-shaped working face；
Sleeve, it is in hollow cylindrical and is co-axially located in shell, has been evenly distributed on the sleeve lining multiple convex
The interior guide rail gone out；One end of the interior guide rail is provided with wedge-shaped working face；
Outer indexing pawl, it is set in be provided with one end outside the sleeve, the outer indexing pawl and is engaged with the outer guide
Outer guide groove, it is described it is outer indexing pawl inner side end on be provided with multiple outer indexing teeth circumferentially arranged；
Outer sliding pawl set, its other end being set in outside the sleeve and the outer sliding pawl set are coordinated with sleeve by prismatic pair；
Multiple sliding pawls of outer wedge shape circumferentially arranged are provided with the outer sliding pawl set inner side end；
Camshaft, it is co-axially located in the sleeve；
Interior indexing pawl, it is set between sleeve and camshaft, is provided with what is coordinated with the interior guide rail on the interior indexing pawl
Multiple interior indexing teeth circumferentially arranged are provided with interior guide groove, the inner side end of the interior indexing pawl；
Interior sliding pawl set, it is set between sleeve and camshaft and the interior sliding pawl set is coordinated with camshaft by prismatic pair；
Multiple sliding pawls of interior wedge shape circumferentially arranged are provided with the interior sliding pawl set inner side end；
Wherein, the wedge-shaped working face of the outer indexing tooth and outer guide is engaged with the sliding pawl of outer wedge shape, makes outer indexing pawl along axle
Line moves back and forth a cycle, and the outer sliding pawl set can be driven to rotate to an angle；The wedge of the interior indexing tooth and interior guide rail
Shape working face is engaged with the sliding pawl of interior wedge shape, interior indexing pawl is moved back and forth a cycle along axis, can be driven in described
Sliding pawl set rotates to an angle；The outer sliding pawl set is opposite with interior sliding pawl set direction of rotation.
2. VVT drive device according to claim 1, it is characterised in that the both ends of the surface of the shell are in spacious
Open type, the left and right ends of the shell are removably provided with left end cap and right end cap respectively.
3. VVT drive device according to claim 2, it is characterised in that one end of the shell is fixed with
Timing sprocket, it enables engine crankshaft to drive shell to rotate by coordinating with timing chain.
4. VVT drive device according to claim 2, it is characterised in that one end of the shell is fixed with
Timing belt pulley, it enables engine crankshaft to drive shell to rotate by coordinating with Timing Belt.
5. the VVT drive device according to claim 3 or 4, it is characterised in that the outer sliding pawl set outside
End face is provided with external spiral spring, and the end face outside of the outer indexing pawl is connected with the first oil pocket.
6. VVT drive device according to claim 5, it is characterised in that the outboard end of the interior sliding pawl set
Face is provided with inside spin spring, and the end face outside of the interior sliding pawl set is connected with the second oil pocket, the outboard end of the interior indexing pawl
Face is connected with the 3rd oil pocket.
7. VVT drive device according to claim 6, it is characterised in that branch is provided with the camshaft
Back-up ring is provided with pushing out ring, the shell, the support ring coordinates with back-up ring, so that camshaft can be supported in shell.
8. VVT drive device according to claim 7, it is characterised in that the inner side of the support ring is set
There is sealing gasket.
9. VVT drive device according to claim 8, it is characterised in that the first oil-feed on the camshaft
Hole, the second fuel feed hole and enter three fuel feed holes, first fuel feed hole, the second fuel feed hole and enter three fuel feed holes respectively with the first oil
Chamber, the second oil pocket and the connection of the 3rd oil pocket.
10. VVT drive device according to claim 9, it is characterised in that first fuel feed hole passes through
Flexible pipe is connected with the first oil pocket, second fuel feed hole and enters three fuel feed holes respectively by the oil duct being arranged in camshaft and
Two oil pockets and the connection of the 3rd oil pocket.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788204.XA CN107327328B (en) | 2017-08-30 | 2017-08-30 | Variable valve timing driving mechanism for engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788204.XA CN107327328B (en) | 2017-08-30 | 2017-08-30 | Variable valve timing driving mechanism for engine |
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| CN107327328A true CN107327328A (en) | 2017-11-07 |
| CN107327328B CN107327328B (en) | 2023-06-27 |
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| CN201710788204.XA Active CN107327328B (en) | 2017-08-30 | 2017-08-30 | Variable valve timing driving mechanism for engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939469A (en) * | 2017-12-29 | 2018-04-20 | 辽宁工业大学 | A kind of continuous variable valve timing driving device and control method |
| CN108869056A (en) * | 2018-07-31 | 2018-11-23 | 辽宁工业大学 | A kind of cylinder-variable cylinder deactivation of engine device and its control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0693812A (en) * | 1992-09-11 | 1994-04-05 | Unisia Jecs Corp | Valve timing control device for internal combustion engine |
| JPH1018815A (en) * | 1996-07-03 | 1998-01-20 | Denso Corp | Valve timing adjusting device for internal combustion engine |
| CN201934195U (en) * | 2011-02-23 | 2011-08-17 | 朱成玉 | Variable distribution gas phase control mechanism of internal combustion engine |
| CN105626179A (en) * | 2014-10-30 | 2016-06-01 | 上海汽车集团股份有限公司 | Variable-valve timing system and electric driving device thereof |
| CN107035454A (en) * | 2015-12-01 | 2017-08-11 | 丰田自动车株式会社 | The valve gear of internal combustion engine |
| CN207122336U (en) * | 2017-08-30 | 2018-03-20 | 辽宁工业大学 | A kind of VVT drive device |
-
2017
- 2017-08-30 CN CN201710788204.XA patent/CN107327328B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0693812A (en) * | 1992-09-11 | 1994-04-05 | Unisia Jecs Corp | Valve timing control device for internal combustion engine |
| JPH1018815A (en) * | 1996-07-03 | 1998-01-20 | Denso Corp | Valve timing adjusting device for internal combustion engine |
| CN201934195U (en) * | 2011-02-23 | 2011-08-17 | 朱成玉 | Variable distribution gas phase control mechanism of internal combustion engine |
| CN105626179A (en) * | 2014-10-30 | 2016-06-01 | 上海汽车集团股份有限公司 | Variable-valve timing system and electric driving device thereof |
| CN107035454A (en) * | 2015-12-01 | 2017-08-11 | 丰田自动车株式会社 | The valve gear of internal combustion engine |
| CN207122336U (en) * | 2017-08-30 | 2018-03-20 | 辽宁工业大学 | A kind of VVT drive device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939469A (en) * | 2017-12-29 | 2018-04-20 | 辽宁工业大学 | A kind of continuous variable valve timing driving device and control method |
| CN107939469B (en) * | 2017-12-29 | 2024-02-13 | 辽宁工业大学 | Continuously variable valve timing driving device and control method |
| CN108869056A (en) * | 2018-07-31 | 2018-11-23 | 辽宁工业大学 | A kind of cylinder-variable cylinder deactivation of engine device and its control method |
| CN108869056B (en) * | 2018-07-31 | 2023-12-22 | 辽宁工业大学 | Cylinder deactivation device of variable cylinder engine and control method thereof |
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|---|---|
| CN107327328B (en) | 2023-06-27 |
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Inventor after: Qu Xiaozhen Inventor after: Zhang Tian Inventor after: Wang Dong Inventor before: Qu Xiaozhen Inventor before: Zhang Tian Inventor before: Wang Dong Inventor before: Li Yonggang Inventor before: Zheng Sen |
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Effective date of registration: 20240229 Address after: 121000 Xinglong Village, Shuangyang Town, Linghai City, Jinzhou City, Liaoning Province (Shuangyang Small and Medium sized Enterprise Park) Patentee after: JINZHOU GUANGHE SEALING INDUSTRY CO.,LTD. Country or region after: China Address before: 121001, 169 street, Guta District, Liaoning, Jinzhou Patentee before: LIAONING University OF TECHNOLOGY Country or region before: China |