CN102367749B - Variable valve timing device - Google Patents
Variable valve timing device Download PDFInfo
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- CN102367749B CN102367749B CN201110315190.2A CN201110315190A CN102367749B CN 102367749 B CN102367749 B CN 102367749B CN 201110315190 A CN201110315190 A CN 201110315190A CN 102367749 B CN102367749 B CN 102367749B
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- stator
- rotor
- valve timing
- variable valve
- timing apparatus
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- 230000003466 anti-cipated effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 abstract 3
- 230000001276 controlling effect Effects 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000004323 axial length Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
The invention provides a variable valve timing device which is conductive to pin removal and reasonable in position limitation in the most advanced positions and the most lagged positions. The variable valve timing device is structurally characterized in that: a position-limiting boss extends from the circumferential wall of a rotor along the radial direction, a locking device is arranged on the position-limiting boss, when a lag cavity is minimal and the position-limiting boss props against a stator partition wall, the relative positions of a stator and the rotor are the most advanced positions of the variable valve timing device; and when an advance cavity is minimal and the position-limiting boss props against another stator partition wall, the relative positions of the stator and the rotor are the most lagged positions of the variable valve timing device. The position-limiting boss is arranged on the rotor, the locking device is arranged on the position-limiting boss and then the locking device is arranged on the outer side of the inner wall of a hydraulic cavity, thereby being conductive to the pin removal of the locking device; simultaneously, in the most advanced positions and the most lagged positions, the position-limiting boss is adopted for position limitation, other hydraulic cavities adopt smaller moving blades, the moving blades are always kept in the situation of being not in contact with the stator partition wall, and the requirements on the quality of the moving blades are further reduced.
Description
Technical field
The present invention relates to technical field of engines, be specifically related to a kind of variable valve timing apparatus.
Background technique
Present variable valve timing apparatus can be divided into steel and aluminum according to material.
The shortcoming of aluminum valve timing apparatus is that so the thermal expansion coefficient of parts is different, leakage-gap can vary with temperature and change because bolt must be used steel, thereby it is larger to cause leakage rate and friction torque to vary with temperature.In addition, the Rigidity and strength of aluminium is all less than steel, in the working procedure, when rotor and stator are in lag position, can produce bump, through easily causing rotor serious wear even cracked behind the long-time bump.
The steel variable valve timing apparatus is for weight reduction, and majority has been abandoned rotor on the aluminum variable valve timing apparatus and the structure of blade one, has adopted the little moving vane of size.But the shortcoming of this scheme is the inboard that Locking Device can only be arranged in hydraulic pressure cavity, and the flow direction of hydraulic oil is opposite with centrifugal force, is unsuitable for out of stock.Simultaneously because the moving vane size is less, the most in advance and the spacing multi-disc moving vane that needs during lag position simultaneously spacing, thisly spacingly belonged to the location in principle, this requires the spacing next door of stator and rotor blade mounting groove that very high machining accuracy is arranged.Simultaneously, because when anticipated future position and lag position, moving vane contacts with the spacing next door of stator, moving vane bears larger moment, so moving vane need be selected preferably material, and need moving vane is carried out special heat treatment, to improve its wear resistance and intensity.
Summary of the invention
The objective of the invention is to propose a kind of be beneficial to out of stock, anticipated future position and the spacing rational variable valve timing apparatus of lag position.
The variable valve timing apparatus that proposes according to the present invention, comprise rotor, stator, be installed in the moving vane on the periphery of rotor wall, the double back shroud of doing drive wheel, front shroud and rotor controlling device, described rotor becomes axle sleeve to be connected with camshaft, described back shroud is connected with bent axle, the inwall of described stator radially is extended with the stator boss against the periphery of rotor wall, described stator boss is the circumferential wall of stator against the end face of periphery of rotor wall, the side that is connected with the circumferential wall of stator on the stator boss is the stator next door, described stator next door, moving vane, the periphery of rotor wall, back shroud and front shroud form the hysteresis chamber of described variable valve timing apparatus and shift to an earlier date the chamber, the second radial direction oil hole that is provided with the first radial direction oil hole of being communicated with the chamber that lags behind on the described rotor and is communicated with chamber in advance, key is: described periphery of rotor wall radially is extended with positive stop lug boss, be provided with the Locking Device for locked rotor on the described positive stop lug boss, when described hysteresis chamber minimum and described positive stop lug boss and described stator next door against the time, the relative position of stator and rotor is the anticipated future position of described variable valve timing apparatus; When described in advance chamber minimum and described positive stop lug boss and another stator next door against the time, the relative position of stator and rotor is the lag position of described variable valve timing apparatus.
Valve timing apparatus of the present invention by at rotor positive stop lug boss being set, is arranged on Locking Device on the positive stop lug boss, and so just so that Locking Device has been arranged in the hydraulic pressure cavity inner wall outside, it is out of stock to be beneficial to Locking Device; Simultaneously, at anticipated future position and lag position, adopt positive stop lug boss spacing, all the other hydraulic pressure cavity adopt less moving vane, just can keep moving vane to remain and not contact with the stator next door, have reduced the quality requirement to moving vane.
Described Locking Device comprises lock pin, locking spring and is arranged on the pin-and-hole on the described rotor positive stop lug boss and is arranged on the positioning hole that passes for lock pin on the front shroud that described lock pin and positioning hole are Spielpassung.By can be at positioning hole on lock pin flexible under the effect of locking spring and the front shroud cooperate the locking of realization rotor.
The locking gap of described lock pin and positioning hole realizes that by assembly technology the method for described assembly technology is: in anticipated future position, lock pin and positioning hole are fitted; Then with the controlling device pretension, make between stator and front shroud and the back shroud and can relatively rotate; Fixed rotor and stator, and keep positive stop lug boss and stator next door against, synchronously opposite spin front shroud and back shroud, angle of swing is according to the locking gap setting of lock pin with the positioning hole requirement; At last controlling device is tightened, so that stator and front shroud and back shroud cannot relatively rotate.Adopt assembly technology to guarantee the matching gap of lock pin and positioning hole, be beneficial to out of stock.
Described stator is provided with chamfering on the next door.Do to lag behind valve timing or when regulating in advance, the high pressure liquid force feed can be full of rapidly limited boss by chamfering and contact the hysteresis chamber that completely cuts off with the stator next door or shift to an earlier date the chamber, can improve governing speed.
The connection of described positioning hole edge is provided with oil-feed tank, and the tangent line of described oil-feed tank and periphery of rotor wall has an outside angle.Break away from the process of positioning hole of front shroud at lock pin like this, the high pressure liquid force feed can enter positioning hole by oil-feed tank fast by rotary centrifugal force, realizes out of stock fast.
Described controlling device comprises plane scroll spring, spring retainer and connecting bolt, and described plane scroll spring is linked together rotor and stator by spring retainer and connecting bolt.The effect of controlling device is to overcome camshaft moment of torsion in the course of the work.Adopt plane scroll spring can shorten significantly the axial length of variable valve timing apparatus herein.
The socket place of described rotor and camshaft is provided with the draining exhaust passage, is provided with the gap with described draining channel connection on the inner circle of described back shroud.Like this in out of stock and working procedure, gas in chamber and the hysteresis chamber and the hydraulic oil in the Locking Device are discharged by the draining exhaust passage in advance, and increased draining exhaust outlet area with the gap of draining channel connection on the back shroud inner circle, so that the draining exhaust is more smooth and easy.
Described rotor is provided with lightening hole by balance barycenter principle, so that the center of gravity of variable valve timing apparatus is in gyration center as far as possible.
Be provided with bolt mounting holes on the described stator, described bolt mounting holes has been disposed radially the draining air vent, gas in chamber and the hysteresis chamber and the hydraulic oil in the bolt mounting holes can be discharged by the draining air vent so in advance, under the effect of rotary centrifugal force, the hydraulic oil of discharge can to back shroud namely drive wheel carry out splash lubrication.
Description of drawings
Fig. 1 is the A-A sectional view of Fig. 3.
Fig. 2 is the B-B sectional view of Fig. 3.
Fig. 3 is the C-C sectional view of Fig. 2.
Fig. 4 is rotor structure schematic representation of the present invention.
Fig. 5 is stator structure schematic representation of the present invention.
Fig. 6 is front cover structure schematic representation of the present invention.
Fig. 7 is plan view of the present invention.
Embodiment
The below contrasts accompanying drawing, by the description to embodiment, the effect of the mutual alignment between the shape of the specific embodiment of the present invention such as related each member, structure, the each several part and annexation, each several part and working principle etc. are described in further detail.
Such as Fig. 1-7, variable valve timing apparatus of the present invention, comprise rotor 1, stator 2, be installed in the moving vane 12 on the periphery of rotor wall 11, the double back shroud 3 of doing drive wheel, front shroud 4 and rotor controlling device 5,6 one-tenth axle sleeves of described rotor 1 and camshaft are connected, described back shroud 3 is connected (not shown) with bent axle, the inwall of described stator 2 radially is extended with the stator boss 21 against the periphery of rotor wall, described stator boss 21 is the circumferential wall 211 of stator against the end face of periphery of rotor wall 11, the side that is connected with the circumferential wall 211 of stator on the stator boss 21 is stator next door 212 and 213, described stator next door 212,213, moving vane 12, periphery of rotor wall 11, back shroud 3 and front shroud 4 form the hysteresis chamber 71 of described variable valve timing apparatus and shift to an earlier date chamber 72, the second radial direction oil hole 14 that is provided with the first radial direction oil hole 13 of being communicated with the chamber 71 that lags behind on the described rotor 1 and is communicated with chamber 72 in advance, described periphery of rotor wall 11 radially is extended with positive stop lug boss 15, be provided with the Locking Device 16 for locked rotor 1 on the described positive stop lug boss 15, when described hysteresis chamber 71 minimum and described positive stop lug boss 15 and described stator next door 213 against the time, the relative position of stator 2 and rotor 1 is the anticipated future position of described variable valve timing apparatus, such as Fig. 3; Minimum and described positive stop lug boss 15 and another stator next door be against 212 the time when described in advance chamber 72, and the relative position of stator 2 and rotor 1 is the lag position of described variable valve timing apparatus.
Working principle of the present invention is: when the high pressure liquid force feed enters hysteresis chamber 71 by first radial direction oil hole 13 of the oilhole on the camshaft 6 on rotor 1, second radial direction oil hole 14 of the low-pressure hydraulic oil in chamber 72 on rotor 1 discharged by the oilhole of camshaft 6 in advance, stator 2 rotates counterclockwise with respect to rotor 1, thereby the hysteresis that realizes valve timing is regulated.In like manner, when the high pressure liquid force feed enters in advance chamber 72 by second radial direction oil hole 14 of the oilhole on the camshaft 6 on rotor 1, first radial direction oil hole 13 of the low-pressure hydraulic oil in hysteresis chamber 71 on rotor 1 discharged by the oilhole of camshaft 6, stator 2 clockwise rotates with respect to rotor 1, thereby realizes the in advance adjusting of valve timing.Those skilled in the art all clearly knows, valve variable timing device of the present invention both can be used for the intake valve timing and regulated, and also can be used for the exhaust valve timing and regulated.
Such as Fig. 2,3,4, Locking Device 16 of the present invention comprises lock pin 161, locking spring 162 and is arranged on the pin-and-hole 163 on the described rotor positive stop lug boss 15 and is arranged on the positioning hole 41 that passes for lock pin 161 on the front shroud 4 that described lock pin 161 is Spielpassung with positioning hole 41.Positioning hole 41 by can be on lock pin 161 flexible under the effect of locking spring 162 and front shroud 4 cooperate the locking of realization rotor 1.In order to ensure the lock pin 161 locking gap with positioning hole 41, be beneficial to out of stockly, guarantee the locking gap by assembly technology, concrete assembly technology is: in anticipated future position, lock pin 161 and positioning hole 41 are fitted; Then with controlling device 5 pretensions, make between stator 2 and front shroud 4 and the back shroud 3 and can relatively rotate; Fixedly turn 1 son and stator 2, and keep positive stop lug boss 15 and stator next door 213 against, synchronously opposite spin front shroud 4 and back shroud 2, angle of swing is according to the gap setting of lock pin 161 with positioning hole 41; At last controlling device 5 is tightened, until stop to relatively rotate between stator 2 and front shroud 4 and the back shroud 3.
Such as Fig. 5, be provided with chamfering 2130 on the stator next door 213 of valve timing apparatus of the present invention.Do valve timing to lag behind when regulating, the high pressure liquid force feed can be full of rapidly limited boss 15 by chamfering 2130 and contact the hysteresis chamber 71 that completely cuts off with stator next door 213, can improve governing speed.
Such as Fig. 6, the connection of positioning hole 41 edges is provided with oil-feed tank 42, and the tangent line of described oil-feed tank 42 and periphery of rotor wall 11 has an outside angle.Break away from the process of positioning hole 41 of front shrouds at lock pin 161 like this, the high pressure liquid force feed can enter positioning hole 41 by oil-feed tank fast by rotary centrifugal force, realizes out of stock fast.
Such as Fig. 1, when described variable valve timing apparatus is applied to exhaust side, described controlling device 5 comprises plane scroll spring 51, spring retainer 52 and connecting bolt 53, and described plane scroll spring 51 is linked together rotor 1 and stator 2 by spring retainer 52 and connecting bolt 53.The effect of controlling device 5 is to overcome camshaft 6 moment of torsion in the course of the work.Adopt plane scroll spring 51 can shorten significantly the axial length of variable valve timing apparatus of the present invention herein.
Such as Fig. 7, described rotor 1 is provided with draining exhaust passage 61 with the socket place of camshaft 6, is provided with the gap 31 that is communicated with described draining passage 61 on the inner circle of described back shroud 3.Like this in out of stock and working procedure, gas in chamber 72 and the hysteresis chamber 71 and the hydraulic oil in the Locking Device 16 are discharged by draining exhaust passage 61 in advance, and the gap 31 that is communicated with draining exhaust passage 61 on back shroud 3 inner circles has increased draining exhaust outlet area, so that the draining exhaust is more smooth and easy.
Such as Fig. 4, described rotor 1 is provided with lightening hole 17 by balance barycenter principle, so that the center of gravity of variable valve timing apparatus is in gyration center as far as possible.
Such as Fig. 5, be provided with bolt mounting holes 22 on the described stator 2, described bolt mounting holes 22 has been disposed radially draining air vent 221, gas in chamber 72 and the hysteresis chamber 71 and the hydraulic oil in the bolt mounting holes can be discharged by draining air vent 221 so in advance, under the effect of rotary centrifugal force, the hydraulic oil of discharge can to back shroud 3 namely drive wheel carry out splash lubrication.
Claims (8)
1. variable valve timing apparatus, comprise rotor, stator, be installed in the moving vane on the periphery of rotor wall, the double back shroud of doing drive wheel, front shroud and rotor controlling device, described rotor becomes axle sleeve to be connected with camshaft, described back shroud is connected with bent axle, the inwall of described stator radially is extended with the stator boss against the periphery of rotor wall, described stator boss is the circumferential wall of stator against the end face of periphery of rotor wall, the side that is connected with the circumferential wall of stator on the stator boss is the stator next door, described stator next door, moving vane, the periphery of rotor wall, back shroud and front shroud form the hysteresis chamber of described variable valve timing apparatus and shift to an earlier date the chamber, the second radial direction oil hole that is provided with the first radial direction oil hole of being communicated with the chamber that lags behind on the described rotor and is communicated with chamber in advance, it is characterized in that: described periphery of rotor wall radially is extended with positive stop lug boss, be provided with the Locking Device for locked rotor on the described positive stop lug boss, when described hysteresis chamber minimum and described positive stop lug boss and described stator next door against the time, the relative position of stator and rotor is the anticipated future position of described variable valve timing apparatus; When described in advance chamber minimum and described positive stop lug boss and another stator next door against the time, the relative position of stator and rotor is the lag position of described variable valve timing apparatus.
2. variable valve timing apparatus according to claim 1, it is characterized in that: described Locking Device comprises lock pin, locking spring and is arranged on the pin-and-hole on the described rotor positive stop lug boss and is arranged on the positioning hole that passes for lock pin on the front shroud that described lock pin and positioning hole are Spielpassung.
3. variable valve timing apparatus according to claim 2, it is characterized in that: the locking gap of described lock pin and positioning hole realizes that by assembly technology the method for described assembly technology is: in anticipated future position, lock pin and positioning hole are fitted; Then with the controlling device pretension, make between stator and front shroud and the back shroud and can relatively rotate; Fixed rotor and stator, and keep positive stop lug boss and stator next door against, synchronously opposite spin front shroud and back shroud, angle of swing is according to the locking gap setting of lock pin with the positioning hole requirement; At last controlling device is tightened, so that stator and front shroud and back shroud cannot relatively rotate.
4. variable valve timing apparatus according to claim 3, it is characterized in that: described stator is provided with chamfering on the next door.
5. variable valve timing apparatus according to claim 4, it is characterized in that: when described variable valve timing apparatus is applied to exhaust side, described controlling device comprises plane scroll spring, spring retainer and connecting bolt, and described plane scroll spring is linked together rotor and stator by spring retainer and connecting bolt.
6. variable valve timing apparatus according to claim 5, it is characterized in that: the socket place of described rotor and camshaft is provided with the draining exhaust passage, is provided with the gap that is communicated with described draining exhaust passage on the inner circle of described back shroud.
7. variable valve timing apparatus according to claim 6, it is characterized in that: described rotor is provided with lightening hole by balance barycenter principle.
8. variable valve timing apparatus according to claim 7, it is characterized in that: be provided with bolt mounting holes on the described stator, described bolt mounting holes has been disposed radially the draining air vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110315190.2A CN102367749B (en) | 2011-10-18 | 2011-10-18 | Variable valve timing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110315190.2A CN102367749B (en) | 2011-10-18 | 2011-10-18 | Variable valve timing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102367749A CN102367749A (en) | 2012-03-07 |
| CN102367749B true CN102367749B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110315190.2A Active CN102367749B (en) | 2011-10-18 | 2011-10-18 | Variable valve timing device |
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| CN (1) | CN102367749B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012211870A1 (en) * | 2012-07-06 | 2014-01-09 | Schaeffler Technologies AG & Co. KG | Hydraulic camshaft adjuster with central locking and adjustable locking clearance |
| CN103498710B (en) * | 2013-09-23 | 2016-03-16 | 奇瑞汽车股份有限公司 | A kind of two-way adjustable camshaft phaser locking mechanism and oil circuit |
| US9752465B2 (en) * | 2014-09-03 | 2017-09-05 | Denso Corporation | Valve timing controller |
| CN104863656B (en) * | 2015-06-09 | 2017-10-17 | 吕元之 | Changeable air valve high-density powder metallurgy VVT rotors and preparation method thereof |
| CN106150587B (en) * | 2016-08-29 | 2019-02-01 | 浙江富杰德汽车系统有限公司 | A kind of middle variable valve timing apparatus and engine |
| CN107762586B (en) * | 2017-11-22 | 2024-04-12 | 宁波太平洋电控系统有限公司 | Plane spring fixing device for cam shaft middle locking VVT |
| CN109281725A (en) * | 2018-11-14 | 2019-01-29 | 宁波太平洋电控系统有限公司 | The oil channel structures quickly adjusted for camshaft phaser |
| CN110295963B (en) * | 2019-07-29 | 2024-03-08 | 绵阳富临精工机械股份有限公司 | Rotor structure and camshaft phaser |
| WO2022036651A1 (en) * | 2020-08-20 | 2022-02-24 | 舍弗勒技术股份两合公司 | Cam phase adjuster |
| WO2022141637A1 (en) * | 2021-01-04 | 2022-07-07 | 舍弗勒技术股份两合公司 | Cam phase adjuster |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002357106A (en) * | 2001-03-28 | 2002-12-13 | Denso Corp | Valve timing adjusting device |
| CN1989317A (en) * | 2004-07-28 | 2007-06-27 | 爱信精机株式会社 | Variable valve timing control device |
| CN101769183A (en) * | 2010-01-18 | 2010-07-07 | 上海交通大学 | Variable valve timing-phase controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4465899B2 (en) * | 2001-02-22 | 2010-05-26 | アイシン精機株式会社 | Valve timing control device |
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2011
- 2011-10-18 CN CN201110315190.2A patent/CN102367749B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002357106A (en) * | 2001-03-28 | 2002-12-13 | Denso Corp | Valve timing adjusting device |
| CN1989317A (en) * | 2004-07-28 | 2007-06-27 | 爱信精机株式会社 | Variable valve timing control device |
| CN101769183A (en) * | 2010-01-18 | 2010-07-07 | 上海交通大学 | Variable valve timing-phase controller |
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| CN102367749A (en) | 2012-03-07 |
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