CN114941556A - Mechanical full-angle variable valve timing adjusting device for experiment - Google Patents
Mechanical full-angle variable valve timing adjusting device for experiment Download PDFInfo
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- CN114941556A CN114941556A CN202210557148.XA CN202210557148A CN114941556A CN 114941556 A CN114941556 A CN 114941556A CN 202210557148 A CN202210557148 A CN 202210557148A CN 114941556 A CN114941556 A CN 114941556A
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- variable valve
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- 238000002474 experimental method Methods 0.000 title abstract description 7
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 claims abstract description 147
- 230000001360 synchronised effect Effects 0.000 claims description 21
- 239000003921 oil Substances 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 7
- 238000003754 machining Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 241000668842 Lepidosaphes gloverii Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34413—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using composite camshafts, e.g. with cams being able to move relative to the camshaft
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- 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 mechanical full-angle variable valve timing adjusting device for experiments, which relates to the technical field of valve timing adjustment and comprises the following components: the camshaft, the fixed phaser, the rotary phaser and the fixed phaser fastening bolt; the fixed phaser is connected with the camshaft through the fixed phaser fastening bolt; the rotating phaser is mounted on the fixed phaser. The valve timing adjustment of the invention can work without a hydraulic system, an electric control system and a control system through a pure mechanical structure, and the valve timing adjustment angle can be any angle and is not limited. The invention has simple structure, convenient operation and low cost.
Description
Technical Field
The invention relates to the field of valve timing adjustment, in particular to a mechanical full-angle variable valve timing adjusting device for experiments.
Background
The variable valve timing is an important technology applied to the vehicle engine, and particularly, the variable valve timing is widely applied to passenger vehicle gasoline engines with the discharge capacity within the range of 1.0L-3.6L. In recent years, the emission regulation layer has been tightened with the environmental issues highlighted. The pursuit of higher power performance and lower pollutant emission levels for automotive engines is a driving force for the continued advancement of new technology applications. The variable valve timing technology is that in the running process of an engine, the performance levels of oil consumption, emission and the like of the engine are improved by changing the opening and closing time (phase) of a valve under the working conditions of different rotating speeds and different loads of the engine. The application of the variable valve timing technology enables the overall oil consumption of the engine to be reduced by 3% -5%, and the variable valve timing technology is an energy-saving emission-reducing technology which is very effective and has high cost performance. The variable valve timing technology applied to the existing vehicle engine mainly has two modes, one is in a hydraulic driving mode, and the other is in a motor driving gear set mode. The variable valve timing mechanism in a hydraulic driving mode is a structural mode mainly applied to the existing product vehicle engine, three or four oil cavities are arranged on a phaser of the variable valve timing mechanism, a rotor blade structure is arranged in each oil cavity of a rotor, the oil cavities are divided into a left part and a right part, a rotor blade is connected with a camshaft, and the outer side of the phaser is connected with an engine timing belt or a timing chain. The rotor vanes can make relative rotation in the phaser oil chamber, and the relative rotation adjustment is valve timing phase adjustment. The rotor blade within each phaser oil chamber divides the phaser oil chamber into two oil chambers (which may be referred to as an a oil chamber and a B oil chamber). The relative angle between the rotor and the phaser can be controlled by controlling the oil pressure and the engine oil flow of the oil cavity A and the oil cavity B in real time through a hydraulic control system, namely the valve timing phase adjustment is controlled. A variable valve timing mechanism in a motor drive gear set form is a new mass production technology appearing in recent years, but is less in application, and mainly has high technical difficulty and high cost. The relative position of the phaser and the cam is changed by a pair of gear sets and controlled by a stepping motor.
Therefore, those skilled in the art are dedicated to develop an experimental mechanical full-angle variable valve timing adjusting device, which can rapidly realize valve timing control through a simple and reliable mechanical structure, provide experimental development and experimental verification capabilities for a vehicle engine, and simultaneously realize development and verification of product functions and performance.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical problems to be solved by the present invention are: how to realize the variable valve timing function by the mechanical structure.
In order to achieve the above object, the present invention provides an experimental mechanical full-angle variable valve timing adjustment apparatus, comprising: the camshaft, the fixed phaser, the rotary phaser and the fixed phaser fastening bolt;
the fixed phaser is connected with the camshaft through the fixed phaser fastening bolt;
the rotating phaser is mounted on the fixed phaser.
Furthermore, a threaded hole is formed in the center of the shaft diameter of the front end of the camshaft, a circular through hole is formed in the center of the fixed phaser, and the fixed phaser fixing bolt penetrates through the circular through hole and is screwed in the threaded hole.
The positioning device comprises a fixed phaser and a camshaft, and is characterized by further comprising a positioning pin, wherein a camshaft positioning pin hole is formed in the camshaft, a precision machining counter bore is formed in the fixed phaser, a positioning pin hole is formed in the bottom of the precision machining counter bore in a machining mode, one end of the positioning pin is in interference fit with the camshaft positioning pin hole, and the other end of the positioning pin is in clearance fit with the positioning pin hole.
Further, the fixed phaser is provided with 9M 8 bolt holes, the rotary phaser is provided with 3 circular arc-shaped long holes uniformly distributed on the same circle, after the fixed phaser and the rotary phaser are installed, 6M 8 bolts are configured to pass through 6M 8 bolt holes, and every two M8 bolts pass through one circular arc-shaped long hole to fix the fixed phaser and the rotary phaser.
Further, an M8 bolt washer is also provided between the M8 bolt and the rotary phaser.
Furthermore, the excircle of the rotary phaser is provided with a synchronous belt tooth, and the edge of the synchronous belt tooth is provided with two synchronous belt baffles.
Furthermore, a first outer circle and a second outer circle are arranged on the outer side of the fixed phase shifter, and the cross sections of the first outer circle and the second outer circle are in a step shape in the radial direction.
Further, rotatory phaser is provided with two first holes and second hole, the section shape of first hole and second hole is the echelonment in radial, first excircle with first hole clearance fit, the second excircle with second hole clearance fit.
Further, the reverse side of the rotary phaser is provided with angular graduations along the edge of the first bore.
Furthermore, an angle scale indicating line is arranged at the first excircle position of the fixed phase shifter.
Compared with the prior art, the invention at least has the following beneficial technical effects:
1. the present invention realizes the variable valve timing function with a reliable mechanical structure.
2. The invention can realize the adjustment of any angle of the valve opening and closing time (namely the valve timing), and the adjustment angle range is not limited and is adjustable in a full angle.
3. The invention realizes the operation of a pure mechanical structure, does not need a complex controller and a control program for control, and does not need an additional hydraulic system, an electric control system and the like.
4. The invention has simple structure, low cost and good reliability.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic diagram of an exemplary mechanical full-angle variable valve timing adjustment apparatus of the present invention;
FIG. 2 is a first schematic view of an exemplary mechanical full-angle variable valve timing adjustment apparatus of the present invention;
FIG. 3 is a schematic view of the assembly structure of the experimental mechanical full-angle variable valve timing adjusting device of the present invention;
FIG. 4 is a front view of an experimental mechanical full-angle variable valve timing adjustment of the present invention;
FIG. 5 is a rear elevational view of the experimental mechanical full-angle variable valve timing adjustment of the present invention;
FIG. 6 is a cross-sectional view of an experimental mechanical full-angle variable valve timing adjustment of the present invention;
FIG. 7 is a schematic diagram of the fixed phaser of the present invention;
fig. 8 is a cross-sectional view of a fixed phaser of the present invention;
fig. 9 is a front view of the rotary phaser of the present invention;
fig. 10 is a rear view of the rotary phaser of the present invention;
fig. 11 is a cross-sectional view of a rotary phaser of the present invention;
wherein: 1-a camshaft; 2-a fixed phaser; 3-a rotating phaser; 4-positioning pins; 5-M8 bolt washer; 6-M8 bolt; 7-fixing phaser clamp bolts; 8-tooth timing synchronous belt; 9-arc long hole; 10-M8 bolt holes; 11-angle scale; 12-angle scale indicator lines; 13-precisely machining a counter bore; 14-dowel holes; 15-a first outer circle; 16-a second outer circle; 17-a first inner bore; 18-a second bore; 19-synchronous belt baffle; 20-synchronous belt tooth; 21-circular through hole.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings for clarity and understanding of technical contents. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in fig. 1 to 6, the present embodiment discloses an experimental mechanical full-angle variable valve timing adjusting apparatus. The device comprises a camshaft 1, a fixed phaser 2, a rotary phaser 3, a positioning pin 4, an M8 bolt gasket 5, an M8 fixing bolt 6, a fixed phaser fixing bolt 7 and a tooth-shaped timing synchronous belt 8.
The camshaft 1 is used for driving an engine valve mechanism, and the opening and closing time of the valve mechanism is determined by the axial relative angle of the camshaft 1. The front end of the camshaft 1 is a finish machining shaft diameter and is precisely matched with the fixed phaser 2. The front end of the shaft diameter of the camshaft 1 is provided with a positioning pin hole 14, and the shaft center of the positioning pin hole 14 and the axial angle of the cam are accurately designed.
As shown in fig. 7 to 8, the fixed phaser 2 is connected to the front end of the camshaft 1. The fixed phaser 2 is provided with a precision processing counter bore 13 which is connected with the front end precision processing shaft diameter of the camshaft 1, and the fixed phaser and the camshaft adopt 6-level tolerance precision transition fit assembly requirements in order to realize good coaxiality requirements. In order to realize the accurate positioning of the axial angle of the two, the two are also positioned by a positioning pin 4. The positioning pin 4 is firstly connected with the camshaft 1, and the positioning pin 4 and the camshaft positioning pin hole 14 adopt 6-level tolerance precision interference fit assembly requirements. A positioning pin hole 14 is machined in the bottom of a counter bore 13 precisely machined in the fixed phaser 2 and is connected with the positioning pin 4, and in order to facilitate assembly, the fixed phaser and the positioning pin adopt 6-level tolerance precision clearance fit assembly requirements.
The fixed phaser 2 and the camshaft 1 are fixed by a fixed phaser fastening bolt 7. The threaded hole is arranged at the center of the front end shaft diameter of the camshaft 1, the circular through hole 21 is arranged at the center of the fixed phaser 2, and the fixed phaser fixing bolt 7 penetrates through the circular through hole 21 of the fixed phaser and is screwed in the threaded hole at the front end of the camshaft 1. Adopt great clearance fit between fixed phaser fastening bolt 7 and the fixed phaser 2 to, fixed phaser fastening bolt 7 compresses tightly fixed phaser 2 in one side in addition, makes the two zonulae occludens, synchronous operation.
Two outer circles are provided outside the fixed phaser 2, the larger one being a first outer circle 15 and the smaller one being a second outer circle 16. The two outer circles are stepped. Meanwhile, the two outer circle edges are provided with chamfer structures, so that the assembly is convenient.
As shown in fig. 9 to 11, the rotary phaser 3 is mounted on the fixed phaser 2. The rotary phaser 3 is provided with two bores, stepped, the larger being the first bore 17 and the smaller being the second bore 18. The two inner holes of the rotating phaser 3 are matched with the fixed phaser 2, the first inner hole 17 is matched with the first excircle 15 of the fixed phaser, the two inner holes are in 7-level tolerance precision clearance fit, the designed value of the fit clearance of the two inner holes is 0.1-0.2 mm, and the two inner holes are convenient for adjusting the relative rotating angle. Meanwhile, the second inner hole 18 of the rotary phaser is matched with the second outer circle 16 of the fixed phaser, the two parts are in 6-level tolerance precision clearance fit, the designed value of the fit clearance of the two parts is 0.02 mm-0.04 mm, so that the high coaxiality precision of the two parts can be ensured, and the relative rotation angle adjustment of the two parts can be ensured.
As shown in fig. 4 to 10, the fixed phaser 2 is provided with 9M 8 bolt holes 10, the centers of the 9 bolt holes are arranged on the same circle and are uniformly arranged at equal angles, the included angle between two adjacent bolt holes is 40 °, and the 9 bolt holes 10 are full-thread through holes. These 9 bolt holes are used to fix the rotational phaser 3.
The rotary phaser 3 is provided with 3 circular arc-shaped long holes 9, the width of each circular arc-shaped long hole is 9mm, and two ends of each circular arc-shaped long hole 9 are semicircles with the radius of 4.5 mm. The centers of the 3 circular arc-shaped long holes are also distributed on the same circle and coincide with the centers of the 9M 8 bolt holes 10 on the fixed phaser 2. The included angle of the radian of each circular arc long hole 9 is designed to be 80 degrees, and the three circular arc long holes 9 are equally distributed by adopting the circumferential angle, so that the included angle between every two adjacent circular arc long holes is just 40 degrees.
After the fixed phaser 2 and the rotating phaser 3 are installed, the fixed phaser 3 and the rotating phaser 3 are fixed by 6M 8 bolts 6, so that the rotating phaser 3 can be fixed on the fixed phaser 2, and after the bolts are screwed down, the rotating phaser 3 and the fixed phaser 2 can be fixed together to run synchronously. The 6M 8 bolts 6 are installed through the circular arc shaped elongated hole 9 of the rotary phaser 3 into the M8 threaded hole of the fixed phaser, and at this time, three of the 9M 8 threaded holes on the fixed phaser 2 are left empty. An M8 bolt gasket 5 is arranged between the bolt and the rotary phaser, so that the pressing surface of the bolt can be increased, and the reliable fastening of the rotary phaser is ensured.
Because 9M 8 screw holes are uniformly distributed, the included angle between each other is 40 °, 3 circular arc long holes are also uniformly distributed, circular arc long hole 9 is designed to be an included angle of 80 ° (more than 80 ° may be, in this embodiment, 80 ° is the best, it can be ensured that there is enough width between adjacent circular arc long holes to the greatest extent, it bears the rotation torque between the inner ring and the outer ring of the rotary phaser, and it is avoided that the structural strength is insufficient and the failure occurs), and circular arc long hole 9 is 9mm wide, which is 1mm wider than the M8 screw hole, so that it can be ensured that the rotary phaser is in any axial position, on any circular arc long hole 9 on the rotary phaser 3, at least two M8 bolt holes of the fixed phaser 2 can be exposed, that is, each circular arc long hole can ensure that at least two M8 bolts are screwed and fixed. Therefore, 6M 8 bolts can be guaranteed to fix the rotary phaser and the fixed phaser regardless of the phase. Any working phase is guaranteed, and the rotary phaser 3 and the fixed phaser 2 have sufficient connection strength, so that the system has sufficient stability and reliability. If the included angle of the circular arc-shaped long hole 9 on the rotary phaser 3 is designed to be smaller than 80 degrees, part of the positions can only be provided with 3 bolts for fixing the rotary phaser and the fixed phaser, the tightening force is reduced, the tightening and fixing of the rotary phaser and the fixed phaser are unstable, and the failure risk exists.
The rotary phaser counter surface is provided with an angular scale 11 along the edge of the first bore 17. The angle scale 11 is 0-360 degrees, the angle scale interval is 1 degree, and a digital mark is arranged on the whole 10 degrees of angle scale, and a long scale mark is arranged for convenient identification. An angle scale indicating line 12 is arranged on the fixed phaser 2 near the first outer circle 15. The angular scale indicating lines 12 just indicate the angular scales 11 on the rotary phaser after the rotary phaser 3 is assembled with the fixed phaser 2. When the two are subjected to phase adjustment, the angle scale 11 indicated before and after the adjustment of the angle scale indicating lines 12 is recorded, so that the angle value of relative adjustment rotation of the two can be recorded and calculated, the indication and the accurate recording of the angle adjustment of the two are realized, and the angle accurate adjustment is facilitated. The precise adjustment of the angle is very critical for the vehicle engine experiment.
The excircle of the rotary phaser 3 is provided with a synchronous belt tooth 20 required by tooth-shaped timing synchronous belt transmission, and the edge of the synchronous belt tooth is provided with two synchronous belt baffles 19. The synchronous belt teeth are used for installing a tooth-shaped timing synchronous belt 8, and the tooth-shaped timing synchronous belt 8 drives the rotary phaser 3 through the synchronous belt teeth on the outer side of the rotary phaser 3 so as to drive the whole mechanism to rotate. The tooth-shaped timing synchronous belt is ensured to be normally fitted with synchronous belt teeth on the rotary phaser all the time by the timing belt baffles on the two sides of the rotary phaser and not to deviate from the left and right. The tooth timing synchronous belt generally uses a crankshaft on an engine as a driving force, and the specific structure of the tooth timing synchronous belt is a conventional structure and is not described here.
The working principle of the invention is as follows:
first, 6M 8 bolts are loosened, and instead of completely removing them, the rotary phaser can be rotated relative to the fixed phaser, rotating the rotary phaser 3 to the desired relative angle. The angle of rotation is indicated and calculated by the back dial and scale indicating lines 12. When the arc-shaped long holes 9 are blocked by the bolts during the rotation angle, 3M 8 bolts for blocking the arc-shaped long holes are removed and screwed into the other three M8 bolt holes. At this time, the other three M8 bolt holes are exposed from the circular arc-shaped long holes and are not blocked by the regions between the circular arc-shaped long holes. By the operation, the relative position rotation adjustment of any angle between the rotary phaser and the fixed phaser can be realized.
In another embodiment, the outer timing belt teeth of the rotary phaser are replaced with timing sprockets and the timing belt drive is replaced with a timing chain drive.
In another embodiment, the 9M 8 bolt holes on the fixed phaser 2 could be replaced with bolt holes of other specifications, and the tightening bolts of the rotary phaser and the fixed phaser adjusted accordingly. However, in the application scenario, bolts of the M8 specification are more suitable, and if bolts of smaller specifications are replaced, the tightening force is reduced, and the reliability is reduced; if larger size bolts are replaced, some applications may be difficult to deploy due to space issues.
The mechanical full-angle variable valve timing adjusting device for the experiment is provided with a rotary phaser with three arc-shaped long holes, wherein the arc-shaped long holes have 80-degree included angles and are uniformly distributed; the design of a fixed phaser with 9 bolt holes is that the bolt holes are uniformly distributed at 40 degrees; the back of the rotary phaser is provided with 360-degree angle scales, the fixed phaser is provided with matched angle scale indicating lines, and the precise phase adjustment is realized through the assembly combination of the rotary phaser and the fixed phaser. The variable valve timing mechanism realizes the variable valve timing function by using a reliable mechanical structure, does not need a complex controller and a control program for control, does not need an additional hydraulic system and an additional electric control system, and has simple structure, low cost and good reliability. Meanwhile, the invention can realize the adjustment of any angle at the opening and closing time of the valve (namely the valve timing), and the adjustment angle range is not limited and is adjustable in a full angle.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An experimental mechanical full-angle variable valve timing adjustment device, comprising: the camshaft, the fixed phaser, the rotary phaser and the fixed phaser fastening bolt;
the fixed phaser is connected with the camshaft through the fixed phaser fastening bolt;
the rotating phaser is mounted on the fixed phaser.
2. An experimental mechanical full-angle variable valve timing adjustment device according to claim 1, wherein a threaded hole is centrally disposed in a front end shaft diameter of the camshaft, a circular through hole is centrally disposed in the fixed phaser, and the fixed phaser fixing bolt is screwed into the threaded hole through the circular through hole.
3. The experimental mechanical full-angle variable valve timing adjusting device according to claim 2, further comprising a positioning pin, wherein a camshaft positioning pin hole is formed in the camshaft, a precision-machined counter bore is formed in the fixed phaser, a positioning pin hole is machined in the bottom of the precision-machined counter bore, one end of the positioning pin is in interference fit with the camshaft positioning pin hole, and the other end of the positioning pin is in clearance fit with the positioning pin hole.
4. An experimental mechanical full-angle variable valve timing adjusting device according to claim 3, wherein 9M 8 bolt holes are provided in the fixed phaser, 3 circular arc-shaped long holes are provided in the same circle in the rotary phaser, 6M 8 bolts are arranged to pass through 6 of the M8 bolt holes after the fixed phaser and the rotary phaser are mounted, and every two M8 bolts pass through one of the circular arc-shaped long holes to fix the fixed phaser and the rotary phaser.
5. An experimental mechanical full angle variable valve timing adjustment device according to claim 4, further comprising an M8 bolt washer between the M8 bolt and the rotary phaser.
6. An experimental mechanical full-angle variable valve timing adjusting device according to claim 5, wherein an outer circumferential portion of the rotary phaser is provided with a synchronous belt tooth, and an edge of the synchronous belt tooth is provided with two synchronous belt dampers.
7. An experimental mechanical full-angle variable valve timing adjusting device according to claim 4, wherein a first outer circumference and a second outer circumference, the cross-sectional shapes of which are stepped in a radial direction, are provided outside the fixed phaser.
8. An experimental mechanical full-angle variable valve timing adjustment apparatus according to claim 7, wherein the rotary phaser is provided with two first and second inner bores having a stepped cross-sectional shape in a radial direction, the first outer circumference being in clearance fit with the first inner bore, the second outer circumference being in clearance fit with the second inner bore.
9. An experimental mechanical full angle variable valve timing adjustment device according to claim 8, wherein the reverse face of the rotary phaser is provided with angular graduations along the edge of the first bore.
10. An experimental mechanical full angle variable valve timing adjustment device according to claim 9, wherein the first outer circumferential position of the fixed phaser is provided with an angular scale indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210557148.XA CN114941556B (en) | 2022-05-20 | 2022-05-20 | Mechanical full-angle variable valve timing adjusting device for experiments |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210557148.XA CN114941556B (en) | 2022-05-20 | 2022-05-20 | Mechanical full-angle variable valve timing adjusting device for experiments |
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| CN114941556A true CN114941556A (en) | 2022-08-26 |
| CN114941556B CN114941556B (en) | 2024-06-04 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769183A (en) * | 2010-01-18 | 2010-07-07 | 上海交通大学 | Variable valve timing-phase controller |
| CN103257047A (en) * | 2013-05-29 | 2013-08-21 | 重庆长安汽车股份有限公司 | Test device used for engine valve timing continuous adjustment |
| CN203796345U (en) * | 2014-04-09 | 2014-08-27 | 北京汽车动力总成有限公司 | Camshaft signal disk structure and engine |
| KR20150072977A (en) * | 2013-12-20 | 2015-06-30 | 현대자동차주식회사 | Valve Train Layout Structure Including Cam Phaser and Camshaft-In-Camshaft |
| CN206562946U (en) * | 2017-02-07 | 2017-10-17 | 一汽海马动力有限公司 | A kind of VVT phaser oil channel structure |
| CN108386246A (en) * | 2018-01-31 | 2018-08-10 | 东风汽车集团有限公司 | A kind of gas distribution phase of engine assembly tooling and method |
-
2022
- 2022-05-20 CN CN202210557148.XA patent/CN114941556B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769183A (en) * | 2010-01-18 | 2010-07-07 | 上海交通大学 | Variable valve timing-phase controller |
| CN103257047A (en) * | 2013-05-29 | 2013-08-21 | 重庆长安汽车股份有限公司 | Test device used for engine valve timing continuous adjustment |
| KR20150072977A (en) * | 2013-12-20 | 2015-06-30 | 현대자동차주식회사 | Valve Train Layout Structure Including Cam Phaser and Camshaft-In-Camshaft |
| CN203796345U (en) * | 2014-04-09 | 2014-08-27 | 北京汽车动力总成有限公司 | Camshaft signal disk structure and engine |
| CN206562946U (en) * | 2017-02-07 | 2017-10-17 | 一汽海马动力有限公司 | A kind of VVT phaser oil channel structure |
| CN108386246A (en) * | 2018-01-31 | 2018-08-10 | 东风汽车集团有限公司 | A kind of gas distribution phase of engine assembly tooling and method |
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|---|---|
| CN114941556B (en) | 2024-06-04 |
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