CN103953408B - Electrodeless variable valve timing mechanism - Google Patents
Electrodeless variable valve timing mechanism Download PDFInfo
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- CN103953408B CN103953408B CN201410180877.3A CN201410180877A CN103953408B CN 103953408 B CN103953408 B CN 103953408B CN 201410180877 A CN201410180877 A CN 201410180877A CN 103953408 B CN103953408 B CN 103953408B
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- inner core
- driven inner
- plunger
- camshaft
- hole
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- 238000009827 uniform distribution Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 54
- 238000009826 distribution Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
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- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses a kind of electrodeless variable valve timing mechanism, mechanical control part includes the active urceolus of coaxial package and driven inner core and the plunger promoted by magnetic valve, actively urceolus is coaxially connected with drive, driven inner core one end axis hole is connected with camshaft one axle head, plunger is snug fit at driven inner core other end axis hole, return spring is press-fited between plunger and camshaft axle head, actively urceolus and driven inner core are by inside and outside tooth transmission, inside and outside tooth is circumference uniform distribution on driving and driven inner core, forms the oil pocket of variable volume between the two；The loop of hydraulic control portion includes the radial direction driven inner core internal oil passages of camshaft bearing position oil circuit, camshaft axle head internal oil passages, plunger body oil circuit and circumference uniform distribution, radial direction relief hole and spout hole, relief hole and the spout hole of offering circumference uniform distribution on plunger can connect with driven inner core internal oil passages respectively.The present invention regulates oil pocket volume size by oil pressure, it is achieved electrodeless variable valve timing regulates.
Description
(1) technical field:
The present invention relates to automobile engine air-distributing valve mechanism, a kind of electrodeless variable valve timing mechanism.
(2) background technology:
Different engines distribution timings are the optimal valve timings obtained according to test, thus become design
Valve-train Cam and determine each cylinder inlet and outlet cam on camshaft relative to the foundation of position, but
It practice, when distribution cam axle design is the most fixed, then the valve timing of engine also determines that,
Engine operation process is unalterable.
But, the height of engine speed is to have an impact to inlet and outlet flowing and cylinder combustion process
's.During rotating speed height, induction air flow ratio is high, and inertia is big, it is desirable that inlet valve is opened earlier, and a little closedown in evening,
Enter some gaseous mixtures or air more as far as possible；Otherwise when engine speed is relatively low, induction air flow ratio is low, flowing
Inertia is the least, if inlet valve is opened too early, owing to now piston is just in up exhaust, it is easy to new
Fresh gas extrusion cylinder, makes air inlet reduce on the contrary, and engine work is more unstable.Therefore, at low turn
During speed, it is desirable to engine intake valve is opened a little later.So, during engine speed difference, fixed to distribution
Time requirement be different.
From the eighties in last century, Ge great automobile production company occurs in that on motorcar engine some can
Become the controlling organization of valve timing.Such as the VTEC mechanism of Honda Company, the exploitation of Alfa Romeo company can
Air valve variation timing mechanism etc..But above mechanism all can not realize electrodeless variable.
(3) summary of the invention:
For the deficiencies in the prior art, the present invention proposes a kind of electrodeless variable valve timing mechanism, mainly
Solving in operation process, the valve timing of engine can not electrodeless variable technical problem.
Can solve the problem that the electrodeless variable valve timing mechanism of above-mentioned technical problem, including mechanical control part and
Hydraulic control portion, described mechanical control part include the active urceolus of coaxial package and driven inner core and
The plunger promoted by magnetic valve, described active urceolus is coaxially connected with drive, the one of described driven inner core
End axis hole is coaxially connected with camshaft one axle head, and described plunger is coaxially snug fit at the driven inner core other end
Axis hole, between plunger and camshaft driven inner core axis hole internal pressure dress return spring, described active urceolus with
Driven inner core is by the inside and outside tooth transmission corresponding to plunger position, and described inside and outside tooth is in active urceolus
Arranging with circumference uniform distribution on driven inner core, external tooth circumferential size is less than internal tooth circumferential size between
Form the oil pocket of variable volume；The loop of described hydraulic control portion include camshaft bearing position oil circuit,
The axle head internal oil passages of camshaft, plunger body oil circuit and the radial direction corresponding to each oil pocket circumference uniform distribution are driven
Inner core internal oil passages, offers radial direction relief hole and radial direction spout hole, the institute of circumference uniform distribution on plunger respectively
State relief hole can connect with driven inner core internal oil passages respectively with spout hole.
Described plunger enters in driven inner core and puts in place, and described spout hole is closed, and described relief hole is with driven
Inner core internal oil passages connects, each oil pocket oil-feed pressurize, promotes external tooth to turn an angle in internal tooth, real
Existing driven inner core drives camshaft to turn an angle forward, thus controls advance angle size.
Described plunger exits driven inner core and puts in place, and described relief hole exposes, described spout hole and driven inner core
Internal oil passages connects, each oil pocket draining decompression, and external tooth return, in internal tooth original position, recovers the former work of cam
Position.
The bearing position of described camshaft is provided with bearing block and is sealed installed surface, inside bearing block by sealing ring
Oil communication bearing position oil circuit.
Described drive can use biserial sprocket wheel.
Beneficial effects of the present invention:
1, the electrodeless variable valve timing mechanism of the present invention displacement of plunger can control oil with hydraulic circuit
The oil-feed in chamber and draining, and then control between driving and driven inner core separate angle between the inside and outside tooth of transmission,
Thus reach to make the advance angle of inlet valve to increase, the purpose that the angle that lags reduces accordingly.
2, the present invention is by oil pocket volume size between the inside and outside tooth of the size adjustment of hydraulic fluid pressure, enters
And control camshaft lead in relative rotation, thus realize the regulation of electrodeless variable valve timing.
(4) accompanying drawing explanation:
Fig. 1 is the structural representation of one embodiment of the present invention, forms minimum oil pocket between inside and outside tooth.
Fig. 2 is the A A cut-away view in Fig. 1.
Fig. 3 is in Fig. 1 embodiment, forms the structural representation of maximum oil pocket between inside and outside tooth.
Fig. 4 is the B B cut-away view in Fig. 3.
Figure number identifies: 1, actively urceolus；2, driven inner core；3, magnetic valve；4, plunger；5, transmission
Wheel；6, camshaft；7, return spring；8, internal tooth；9, external tooth；10, oil pocket；11, bearing position
Oil circuit；12, camshaft axle head internal oil passages；13, plunger body oil circuit；14, driven inner core interior oil
Road；15, relief hole；16, spout hole；17, bearing block internal oil passages；18, sealing ring；19, convex
Wheel；20, bearing block.
(5) detailed description of the invention:
Technical scheme is described further by illustrated embodiment below in conjunction with the accompanying drawings.
The electrodeless variable valve timing mechanism of the present invention is mainly grouped by mechanical control part and hydraulic control portion
Become.
1, mechanical control part: include actively urceolus 1, driven inner core 2, magnetic valve 3 and plunger 4, described
Actively urceolus 1 is coaxially fixedly mounted with drive 5 (using biserial sprocket wheel), and actively urceolus 1 is same with driven inner core 2
Axle sleeve fills, and can relatively rotate between the two, and the internal tooth 8 and external tooth 9 structure that are arranged by both left ends are real
Now actively urceolus 1 drives driven inner core 2 to rotate, outside described internal tooth 8 (three) circumference uniform distribution is opened in actively
On the inner peripheral surface of cylinder 1, described external tooth 9 (three) circumference uniform distribution is located on driven inner core 2 excircle, outward
The size being smaller in size than internal tooth 8 circumferencial direction of tooth 9 circumferencial direction, thus form the oil pocket 10 of variable volume；
The left end axis hole of described driven inner core 2 is little and right-hand member axis hole big, and described plunger 4 is snug fit at driven inner core 2
In the little axis hole of left end, the outer end of plunger 4 connects the outside magnetic valve 3 arranged, and the inner local of plunger 4 increases
Being matched with bottom the big axis hole of driven inner core 2, the big axis hole end of driven inner core 2 is in interference fit with camshaft 6
Left axle head, the left axle head of described camshaft 6 installed by bearing block 20, and installed surface is provided with sealing ring 18,
It is provided with cam 19 corresponding to valve position in camshaft 6, press-fits between plunger 4 the inner and camshaft 6 axle head
Return spring 7 is in the driven big axis hole of inner core 2, as shown in Figure 1, Figure 3.
Described hydraulic control portion: its hydraulic circuit includes radially being opened in the bearing within bearing block 20
Portion's oil circuit 17, radially it is opened in the bearing position oil circuit 11 of camshaft 6 axle end bearing position, is coaxially opened in cam
The camshaft axle head internal oil passages 12 of axle axle head, the plunger body oil circuit 13 being coaxially opened in plunger 4 (arise from
Plunger 4 is inner and terminate at plunger 4 outer end), driven in the internal radial direction offering circumference uniform distribution of driven inner core 2
Divide on the cylinder of inner core internal oil passages 14 (each oil pocket 10 that connection is corresponding), distance plunger 4 the inner and outer end
The radial direction spout hole 16 of the circumference uniform distribution do not offered and relief hole 15, as shown in Figure 1, Figure 2, Figure 3, Figure 4.
Described hydraulic circuit has two kinds of paths.
1, under magnetic valve 3 drives and return spring 7 acts on, plunger 4 outwards exits driven inner core 2 and puts in place,
Described relief hole 15 exposes outside driven inner core 2, spout hole 16 connection corresponding with driven inner core internal oil passages 14.
Hydraulic circuit main path is: Bearing inner oil circuit 17 bearing position oil circuit 11 camshaft axle head
The driven inner core of internal oil passages 12 2 big axis hole plunger body oil circuit 13 relief hole 15；Hydraulic pressure returns
Roadside flow path is: oil pocket 10 driven inner core internal oil passages 14 spout hole 16 plunger body
Oil circuit 13, as shown in Figure 1 and Figure 2.
2, described magnetic valve 3 promotes plunger 4 to overcome return spring 7 active force to arrive inwardly into driven inner core 2
Position, the connection corresponding with driven inner core internal oil passages 14 of described relief hole 15, described spout hole 16 is by driven interior
The little axis hole of cylinder 2 is closed.
Hydraulic circuit path is: in the oil circuit 11 camshaft axle head of Bearing inner oil circuit 17 bearing position
The driven inner core of portion's oil circuit 12 2 big axis hole plunger body oil circuit 13 relief hole 15 is driven
Inner core internal oil passages 14 oil pocket 10, as shown in Figure 3, Figure 4.
The course of work of the present invention:
When the engine operates, the control bar of magnetic valve 3 is retracted, under return spring 7 acts on, and plunger 4
Moving to high order end (as shown in Figure 1), the relief hole 15 on plunger 2 exposes driven inner core 2, spout hole 16
Just communicate with driven inner core internal oil passages 14.Under pump function, engine lubrication machine oil is from bearing block
20 enter camshaft 6 axle head, are flowed in the oil circuit of plunger 4 by the driven big axis hole of inner core 2, eventually through
Relief hole 15 on plunger 4 is flowed into oil sump, now, does not has pressure lubrication oil, drive in oil pocket 10
5 drive actively urceolus 1, and actively urceolus 1 is by the internal tooth 8 contacted with each other and external tooth 9 (minimum gap location)
Drive driven inner core 2 to rotate, and realize the normal operation of camshaft 6, as shown in Figure 2.
Under some predetermined rotating speed and load condition, magnetic valve 3 is by electronically controlled fuel injection system and ignitron
Reason system incentive, the control bar of magnetic valve 3 stretches out, and promotes plunger 4 to move right put in place (as shown in Figure 3),
Relief hole 15 on plunger 4 communicates with driven inner core internal oil passages 14 in entering driven inner core 2, spout hole 16
Then by the driven little gland seal of inner core 2.Under pump function, engine lubrication machine oil enters from bearing block 20
Camshaft 6 axle head, is flowed in the oil circuit of plunger 4 by driven inner core 2 macropore, by relief hole 15 and from
Dynamic inner core internal oil passages 14 flows into oil pocket 10, promotes the most forward external tooth 9, so that actively urceolus
1 and driven inner core 2 relatively rotate by a certain angle (being illustrated in figure 4 position, maximal clearance), i.e. drive 5
Relatively rotating by a certain angle with camshaft 6, then the advance angle of inlet valve increases, and the angle that lags reduces accordingly.
Control the pressure of lubricating oil, actively urceolus 1 and driven inner core 2 angle in relative rotation can be controlled,
And realize the regulation of electrodeless variable valve timing.
Claims (2)
- The most electrodeless variable valve timing mechanism, including mechanical control part and hydraulic control portion, its It is characterised by:1., described mechanical control part includes actively urceolus (1), driven inner core (2), magnetic valve (3) With plunger (4), described active urceolus (1) is coaxially fixedly mounted with drive (5), actively urceolus (1) With driven inner core (2) coaxial package, can relatively rotate between the two, and be arranged by both left ends Internal tooth (8) and external tooth (9) structure realize actively urceolus (1) and drive driven inner core (2) to rotate, Described internal tooth (8) circumference uniform distribution is opened on the inner peripheral surface of actively urceolus (1), described external tooth (9) Circumference uniform distribution is located on driven inner core (2) excircle, and being smaller in size than of external tooth (9) circumferencial direction is interior The size of tooth (8) circumferencial direction, thus form the oil pocket (10) of variable volume；Described driven inner core (2) left end axis hole is little and right-hand member axis hole big, and described plunger (4) is snug fit at driven inner core (2) In the little axis hole of left end, the outer end of plunger (4) connects the outside magnetic valve (3) arranged, plunger (4) Inner local increase and be matched with bottom the big axis hole of driven inner core (2), driven inner core (2) big Axis hole end passes through in interference fit with the left axle head of camshaft (6), the left axle head of described camshaft (6) Bearing block (20) is installed, and installed surface is provided with sealing ring (18), corresponding to valve position in camshaft (6) it is provided with cam (19), between plunger (4) the inner and camshaft (6) axle head, press-fits return Spring (7) is in the big axis hole of driven inner core (2)；2., the loop of described hydraulic control portion includes bearing block internal oil passages (17), camshaft (6) Bearing position oil circuit (11), the axle head internal oil passages (12) of camshaft, plunger body oil circuit (13) With the radial direction driven inner core internal oil passages (14) corresponding to each oil pocket (10) circumference uniform distribution, in plunger (4) radial direction relief hole (15) and radial direction spout hole (16) of circumference uniform distribution are offered on respectively, described Relief hole (15) can connect with driven inner core internal oil passages (14) respectively with spout hole (16)；3., described plunger (4) enter driven inner core (2) and put in place, described spout hole (16) close, Described relief hole (15) connects with driven inner core internal oil passages (14), and each oil pocket (10) oil-feed is protected Pressure；4., described plunger (4) exit driven inner core (2) and put in place, described relief hole (15) exposes, Described spout hole (16) connects with driven inner core internal oil passages (14), and each oil pocket (10) draining loses Pressure.
- Electrodeless variable valve timing mechanism the most according to claim 1, it is characterised in that: institute Stating drive (5) is biserial sprocket wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180877.3A CN103953408B (en) | 2014-04-30 | 2014-04-30 | Electrodeless variable valve timing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180877.3A CN103953408B (en) | 2014-04-30 | 2014-04-30 | Electrodeless variable valve timing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953408A CN103953408A (en) | 2014-07-30 |
| CN103953408B true CN103953408B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410180877.3A Expired - Fee Related CN103953408B (en) | 2014-04-30 | 2014-04-30 | Electrodeless variable valve timing mechanism |
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| Country | Link |
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| CN (1) | CN103953408B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10358888B4 (en) * | 2003-12-16 | 2018-12-27 | Schaeffler Technologies AG & Co. KG | Internal combustion engine with a hydraulic device for adjusting the rotational angle of a camshaft relative to a crankshaft |
| DE102004027951A1 (en) * | 2004-06-08 | 2006-02-16 | Ina-Schaeffler Kg | Vane-type camshaft adjuster |
| DE102004033522A1 (en) * | 2004-07-10 | 2006-02-09 | Ina-Schaeffler Kg | Camshaft adjuster with electric drive |
| DE102010002713B4 (en) * | 2010-03-09 | 2013-12-05 | Schwäbische Hüttenwerke Automotive GmbH | Camshaft phaser with control valve for the hydraulic adjustment of the phasing of a camshaft |
| CN203822401U (en) * | 2014-04-30 | 2014-09-10 | 桂林电子科技大学 | Stepless variable gas distribution timing mechanism |
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2014
- 2014-04-30 CN CN201410180877.3A patent/CN103953408B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103953408A (en) | 2014-07-30 |
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Granted publication date: 20160817 |
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