CN114941556B - Mechanical full-angle variable valve timing adjusting device for experiments - Google Patents
Mechanical full-angle variable valve timing adjusting device for experiments Download PDFInfo
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- CN114941556B CN114941556B CN202210557148.XA CN202210557148A CN114941556B CN 114941556 B CN114941556 B CN 114941556B CN 202210557148 A CN202210557148 A CN 202210557148A CN 114941556 B CN114941556 B CN 114941556B
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- valve timing
- variable valve
- angle
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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 113
- 230000005526 G1 to G0 transition Effects 0.000 claims abstract description 20
- 230000001360 synchronised effect Effects 0.000 claims description 20
- 238000003754 machining Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 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
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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: camshaft, stationary phaser, rotary phaser, stationary phaser fastening bolts; the stationary phase device is connected with the cam shaft through the stationary phase device fastening bolt; the rotary phaser is mounted on the stationary phaser. The valve timing adjustment device can work through a pure mechanical structure without a hydraulic system, an electric control system and a control system, and the valve timing adjustment angle can be any angle without limitation. 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 an experimental mechanical full-angle variable valve timing adjusting device.
Background
The variable valve timing is an important technology for vehicle engine application, and particularly, the application of the gasoline engine for the passenger car with the displacement ranging from 1.0L to 3.6L is wider. In recent years, emission regulations have been tightened layer by layer with environmental problems being prominent. For automotive engines, the pursuit of higher power performance and lower pollutant emission levels is the driving force for the continued advancement of new technology applications. The variable valve timing technology is to change the opening and closing time (phase) of the valve to improve the fuel consumption, emission and other performance levels of the engine under the working conditions of different rotation speeds and different loads of the engine in the running process of the engine. The application of the variable valve timing technology reduces the overall oil consumption of the engine by 3-5%, and is a very effective energy-saving and emission-reducing technology with higher cost performance. The prior variable valve timing technology applied to the automobile engine mainly has two modes, namely a hydraulic driving mode and a motor driving gear set mode. The hydraulic driving type variable valve timing mechanism is mainly applied to the existing product vehicle engine, three or four oil cavities are arranged on a phaser, a rotor blade structure is arranged in each oil cavity, the oil cavity is divided into a left part and a right part by a rotor blade structure, the rotor blade is connected with a cam shaft, and the outer side of the phaser is connected with an engine timing belt or a timing chain. The rotor blades may be relatively rotated within the phaser oil cavity, with relative rotational adjustment even with valve timing phasing. The rotor blades within each phaser oil chamber divide the phaser oil chamber into two chambers (which may be referred to as an A chamber and a B chamber). The relative angle between the rotor and the phaser can be controlled by controlling the oil pressure and the oil flow of the oil cavity A and the oil cavity B in real time through the hydraulic control system, namely, the valve timing phase adjustment is controlled. The variable valve timing mechanism in the form of a motor-driven gear set is a new mass production technology which appears in recent years, but has fewer applications, mainly high technical difficulty and high cost. The relative positions of a phaser and a cam are changed by a pair of gear sets, and the control is performed by a stepping motor.
Therefore, those skilled in the art have been working on developing a mechanical all-angle variable valve timing adjustment device for experiments, which can rapidly realize valve timing control through a simple and reliable mechanical structure, provide experimental development and experimental verification capabilities for an engine for a vehicle, and simultaneously realize development and verification of functions and performances of a product.
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 implement the variable valve timing function by a mechanical structure.
In order to achieve the above object, the present invention provides an experimental mechanical all-angle variable valve timing adjustment apparatus, comprising: camshaft, stationary phaser, rotary phaser, stationary phaser fastening bolts;
The stationary phase device is connected with the cam shaft through the stationary phase device fastening bolt;
The rotary phaser is mounted on the stationary phaser.
Further, a threaded hole is arranged in the center of the shaft diameter of the front end of the cam shaft, a circular through hole is arranged in the center of the stationary phase fixer, and the stationary phase fixer fixing bolt penetrates through the circular through hole and is screwed in the threaded hole.
Further, the device also comprises a locating pin, a camshaft locating pin hole is formed in the camshaft, a precision machining counter bore is formed in the stationary phase device, a locating pin hole is formed in the bottom of the precision machining counter bore, one end of the locating pin is in interference fit with the camshaft locating pin hole, and the other end of the locating pin is in clearance fit with the locating pin hole.
Further, 9M 8 bolt holes are formed in the fixed phaser, the rotary phaser is provided with 3 circular arc long holes uniformly distributed on the same circle, after the fixed phaser is mounted with the rotary phaser, 6M 8 bolts are configured to pass through 6 of the M8 bolt holes, and each two M8 bolts pass through one circular arc long hole to fix the fixed phaser with the rotary phaser.
Further, an M8 bolt gasket is further arranged between the M8 bolt and the rotary phaser.
Further, synchronous belt teeth are arranged at the outer circle part of the rotary phaser, and two synchronous belt baffles are arranged at the edges of the synchronous belt teeth.
Further, a first outer circle and a second outer circle are arranged on the outer side of the fixed phase device, and the cross section shapes of the first outer circle and the second outer circle are stepped in the radial direction.
Further, the rotary phaser is provided with two first inner bores and two second inner bores, the cross-sectional shapes of the first inner bores and the second inner bores are in a stepped shape in the radial direction, the first outer circle is in clearance fit with the first inner bores, and the second outer circle is in clearance fit with the second inner bores.
Further, the reverse side of the rotary phaser is provided with an angle scale along the edge of the first bore.
Further, an angle scale indication line is arranged at the first outer circle position of the fixed phase device.
Compared with the prior art, the invention has at least the following beneficial technical effects:
1. The invention realizes the variable valve timing function by a reliable mechanical structure.
2. The invention can realize any angle adjustment of the valve opening and closing moment (namely valve timing), the adjusting angle range is not limited, and the valve opening and closing moment is all-angle adjustable.
3. The invention realizes the operation of a pure mechanical structure, does not need a complex controller and 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, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Drawings
FIG. 1 is a schematic view of an experimental mechanical full angle variable valve timing adjustment apparatus according to the present invention;
FIG. 2 is a schematic diagram showing an assembly structure of the experimental mechanical full angle variable valve timing adjustment apparatus according to the present invention;
FIG. 3 is a schematic diagram showing an assembly structure of the experimental mechanical full angle variable valve timing adjustment apparatus according to the present invention;
FIG. 4 is a front view of the experimental mechanical all-angle variable valve timing adjustment apparatus of the present invention;
FIG. 5 is a rear view of the experimental mechanical all-angle variable valve timing adjustment apparatus of the present invention;
FIG. 6 is a cross-sectional view of an experimental mechanical all-angle variable valve timing adjustment apparatus of the present invention;
FIG. 7 is a schematic of a stationary phase shifter of the present invention;
FIG. 8 is a cross-sectional view of a stationary phase shifter of the present invention;
FIG. 9 is a front view of a 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-stationary phase device; 3-a rotary phaser; 4-locating pins; 5-M8 bolt gaskets; 6-M8 bolts; 7-fixing the phase device fastening bolt; 8-tooth timing synchronous belt; 9-arc long holes; 10-M8 bolt holes; 11-angle scale; 12-angle scale indication lines; 13-precisely machining a counter bore; 14-locating pin holes; 15-a first outer circle; 16-a second outer circle; 17-a first bore; 18-a second bore; 19-a synchronous belt baffle; 20-synchronous belt teeth; 21-circular through holes.
Detailed Description
The following description of the preferred embodiments of the present invention refers to the accompanying drawings, which make the technical contents thereof more clear and easier to understand. The present invention may be embodied in many different forms of embodiments and the scope of the present invention is not limited to only the embodiments described herein.
In the drawings, like structural elements are referred to by like reference numerals and components having similar structure or function are referred to by like reference numerals. The dimensions and thickness of each component shown in the drawings are arbitrarily shown, and the present invention is not limited to the dimensions and thickness of each component. The thickness of the components is exaggerated in some places in the drawings for clarity of illustration.
As shown in fig. 1 to 6, the present embodiment discloses an experimental mechanical full angle variable valve timing adjustment device. The device comprises a cam shaft 1, a fixed phase device 2, a rotary phase device 3, a locating pin 4, an M8 bolt gasket 5, an M8 fixing bolt 6, a fixed phase device 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 relative axial angle of the camshaft 1. The front end of the camshaft 1 is a finish machining shaft diameter which is matched with the stationary phase device 2 precisely. The front end of the shaft diameter of the camshaft 1 is provided with a positioning pin hole 14, and the axial 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 machining counter bore 13 which is connected with the precision machining shaft diameter at the front end of the camshaft 1, and in order to achieve good coaxiality requirements, the fixed phaser 2 and the camshaft are assembled by adopting 6-level tolerance precision transition fit. In order to realize accurate positioning of the axial angles of the two, the two are also positioned by adopting a positioning pin 4. The locating pin 4 is firstly connected with the cam shaft 1, and the locating pin 4 and the cam shaft locating pin hole 14 are assembled by adopting 6-level tolerance precision interference fit. The bottom of the precisely machined counter bore 13 on the fixed phaser 2 is provided with a positioning pin hole 14 which is connected with the positioning pin 4, and the positioning pin hole and the positioning pin are assembled by adopting a 6-level tolerance precision clearance fit assembly requirement for convenience in assembly.
The fixed phaser 2 is fixed with the camshaft 1 by a fixed phaser fastening bolt 7. The front end shaft diameter center of the camshaft 1 is provided with a threaded hole, the center of the stationary phase device 2 is provided with a circular through hole 21, and the stationary phase device fixing bolt 7 passes through the circular through hole 21 of the stationary phase device and is screwed in the threaded hole at the front end of the camshaft 1. The fixed phaser fastening bolt 7 and the fixed phaser 2 are in larger clearance fit, and the fixed phaser fastening bolt 7 is pressed and fastened on the other side of the fixed phaser 2, so that the fixed phaser and the fixed phaser are tightly connected and synchronously operated.
Two outer circles are arranged on the outer side of the fixed phaser 2, the larger one is a first outer circle 15, and the smaller one is a second outer circle 16. The two outer circles are in a ladder shape. Simultaneously, these two excircle edges all set up chamfer structures, the assembly of being convenient for.
As shown in fig. 9 to 11, the rotary phaser 3 is mounted on the stationary phaser 2. The rotary phaser 3 is provided with two bores stepped, the larger bore being the first bore 17 and the smaller bore being the second bore 18. The two inner holes of the rotary phaser 3 are matched with the stationary phaser 2, the first inner hole 17 is matched with the first outer circle 15 of the stationary phaser, the two are in clearance fit with 7-level tolerance precision, the design value of the clearance fit between the two is 0.1 mm-0.2 mm, and the two are convenient for relative rotation angle adjustment. Meanwhile, the second inner hole 18 of the rotary phaser is matched with the second outer circle 16 of the stationary phaser, 6-level tolerance precision clearance fit is adopted between the second inner hole and the second outer circle, the design value of the fit clearance between the second inner hole and the second outer circle is 0.02-0.04 mm, high coaxiality precision of the second inner hole and the second outer circle can be guaranteed, and relative rotation angle adjustment of the second inner hole and the second outer circle can be guaranteed.
As shown in fig. 4 to 10, 9M 8 bolt holes 10 are provided on the stationary phase device 2, the centers of the 9 bolt holes are arranged on the same circle, the bolt holes are uniformly arranged at equal angles with each other, the included angle between two adjacent bolt holes is 40 degrees, and the 9 bolt holes 10 are full-thread through holes. These 9 bolt holes are used to fix the rotary phaser 3.
The rotary phaser 3 is provided with 3 circular arc long holes 9, the width of the circular arc long holes is 9mm, and the two ends of the circular arc long holes 9 are semi-circles with the radius of 4.5 mm. The centers of the 3 arc-shaped long holes are also distributed on the same circle and coincide with the centers of 9M 8 bolt holes 10 on the fixed phase device 2. The radian included angle of each arc-shaped long hole 9 is designed to be 80 degrees, and the three arc-shaped long holes 9 are equally distributed by adopting the circumference angle, so that the included angle between every two adjacent arc-shaped long holes is just 40 degrees.
After the fixed phaser 2 and the rotary phaser 3 are installed, 6M 8 bolts 6 are used for fixing, so that the rotary phaser 3 can be fixed on the fixed phaser 2, and after the bolts are screwed down, the rotary phaser 3 and the fixed phaser 2 can be fixed together and run synchronously. The 6M 8 bolts 6 are arranged in the M8 threaded holes of the fixed phase device through the circular arc long holes 9 of the rotary phase device 3, and at the moment, three M8 threaded holes of the fixed phase device 2 are free. And an M8 bolt gasket 5 is arranged between the bolt and the rotary phaser, so that the compression surface of the bolt can be increased, and the rotary phaser is ensured to be reliably fastened.
Because 9M 8 screw holes are evenly distributed, the included angle between each other is 40 degrees, 3 arc long holes are evenly distributed, the arc long holes 9 are designed to be 80 degrees (the angle is larger than 80 degrees, the arc long holes are optimal in the embodiment, enough width between adjacent arc long holes can be ensured to the greatest extent, the rotating torque between the inner ring and the outer ring of the rotary phaser is borne, the structural strength is avoided from failing), the arc long holes 9 are 9mm wide and 1mm wider than the M8 screw holes, so that the rotary phaser can be just ensured to be positioned at any axial position, and at least two M8 screw holes of the stationary phase phaser 2 can be exposed on any one arc long hole 9 on the rotary phaser 3, that is, each arc long hole can ensure at least two M8 screw bolts to be screwed and fixed. Therefore, no matter what phase is, 6M 8 bolts can be used for fixing the rotary phaser and the fixed phaser. Any working phase is guaranteed, the rotary phaser 3 and the stationary phaser 2 have sufficient connection strength, so that the system has sufficient stability and reliability. If the included angle of the arc-shaped long hole 9 on the rotary phaser 3 is designed to be smaller than 80 degrees, only 3 bolts can be used for fixing the rotary phaser and the fixed phaser at partial positions, the tightening force is reduced, the tightening and fixing of the rotary phaser and the fixed phaser are unstable, and the risk of failure exists.
The opposite side of the rotary phaser is provided with an angle 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, a digital mark is arranged on the angle scale of 10 degrees, and long scale lines are arranged, so that the identification is convenient. On the stationary phase 2, near the first outer circle 15, an angle scale indication line 12 is provided. After the rotary phaser 3 is assembled with the stationary phaser 2, the angle scale indicator lines 12 indicate exactly the angle scale 11 on the rotary phaser. When the two are subjected to phase adjustment, the angle scale 11 indicated before and after the adjustment of the angle scale indication line 12 is recorded, so that the angle value of the 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 is convenient to accurately adjust. The precise adjustment of the angle is very critical to the experiments of the vehicle engine.
The outer circle part of the rotary phaser 3 is provided with synchronous belt teeth 20 required by tooth-shaped timing synchronous belt transmission, and the edge of the synchronous belt teeth 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 that the whole mechanism is driven to rotate. The tooth-shaped timing synchronous belt is ensured to be always in normal transmission fit with the synchronous belt teeth on the rotary phaser by the timing belt baffles on the two sides of the rotary phaser, and the tooth-shaped timing synchronous belt is not deviated from left and right. The toothed timing belt is typically driven by a crankshaft on the engine, and its specific structure is conventional and is not described herein.
The working principle of the invention is as follows:
First, 6M 8 bolts are loosened, and the rotary phaser can be rotated relative to the fixed phaser without being completely removed, and the rotary phaser 3 can be rotated to a desired relative angle. The angle of rotation is indicated and calculated by the back dial and scale indicator 12. When the arc-shaped long holes 9 are blocked by the bolts and cannot rotate continuously in the rotating angle process, 3M 8 bolts which block the arc-shaped long holes are disassembled and screwed into the other three M8 bolt holes. At this time, the other three M8 bolt holes are necessarily exposed from the circular arc long holes and are not blocked by the areas among the circular arc long holes. By the operation, the relative position rotation adjustment of any angle between the rotary phaser and the stationary phaser can be realized.
In another embodiment, the rotary phaser outer timing belt teeth are replaced with timing sprocket and the timing belt drive is replaced with timing chain drive.
In another embodiment, 9M 8 bolt holes on the fixed phaser 2 can be replaced with bolt holes of other specifications, and the tightening bolts of the rotary phaser and the fixed phaser are adjusted accordingly. However, in the application scene, the M8 specification bolt is more suitable, and if the bolt with smaller specification is replaced, the tightening force is reduced, and the reliability is reduced; if larger gauge bolts are replaced, some applications may be difficult to deploy due to deployment space issues.
The invention provides a mechanical full-angle variable valve timing adjusting device for experiments, which is designed by a rotary phaser with three arc-shaped long holes, wherein the arc-shaped long holes are uniformly distributed at an included angle of 80 degrees; the fixed phase device with 9 bolt holes is designed, and the bolt holes are uniformly distributed at 40 degrees; the back of the rotary phaser is provided with 360-degree angle scales, and the fixed phaser is provided with matched angle scale indication lines, so that the accurate phase adjustment is realized through the assembly and combination of the rotary phaser and the fixed phaser. The variable valve timing control device realizes the variable valve timing function by a reliable mechanical structure, does not need a complex controller and control program for control, does not need an additional hydraulic system and an electric control system, and has the advantages of simple structure, low cost and good reliability. Meanwhile, the invention can realize any angle adjustment of the valve opening and closing moment (namely valve timing), the adjusting angle range is not limited, and the valve opening and closing moment is all-angle adjustable.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (9)
1. An experimental mechanical full-angle variable valve timing adjustment device, comprising: camshaft, stationary phaser, rotary phaser, stationary phaser fastening bolts;
The stationary phase device is connected with the cam shaft through the stationary phase device fastening bolt;
The rotary phaser is mounted on the fixed phaser;
The fixed phaser is provided with 9M 8 bolt holes, the rotary phaser is provided with 3 circular arc 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 long hole to fix the fixed phaser and the rotary phaser.
2. The experimental mechanical all-angle variable valve timing adjusting device according to claim 1, wherein a threaded hole is arranged in the center of the shaft diameter of the front end of the camshaft, a circular through hole is arranged in the center of the fixed phase shifter, and the fixed phase shifter fixing bolt is screwed into the threaded hole through the circular through hole.
3. The experimental mechanical all-angle variable valve timing adjusting device according to claim 2, further comprising a positioning pin, wherein a cam shaft positioning pin hole is formed in the cam shaft, a precision machining counter bore is formed in the fixed phase device, a positioning pin hole is formed in the bottom of the precision machining counter bore, one end of the positioning pin is in interference fit with the cam shaft positioning pin hole, and the other end of the positioning pin is in clearance fit with the positioning pin hole.
4. The experimental mechanical all-angle variable valve timing adjustment device according to claim 3, wherein an M8 bolt washer is further provided between the M8 bolt and the rotary phaser.
5. The experimental mechanical full-angle variable valve timing adjusting device according to claim 4, wherein the outer circle part of the rotary phaser is provided with synchronous belt teeth, and the edge of the synchronous belt teeth is provided with two synchronous belt baffles.
6. The experimental mechanical all-angle variable valve timing adjusting apparatus according to claim 3, wherein a first outer circle and a second outer circle are provided outside the stationary phase apparatus, and a sectional shape of the first outer circle and the second outer circle is stepped in a radial direction.
7. The experimental mechanical all-angle variable valve timing adjustment device according to claim 6, wherein the rotary phaser is provided with two first inner bores and a second inner bore, the cross-sectional shapes of the first inner bore and the second inner bore are stepped in the radial direction, the first outer circle is in clearance fit with the first inner bore, and the second outer circle is in clearance fit with the second inner bore.
8. An experimental mechanical full angle variable valve timing adjustment apparatus according to claim 7, wherein said opposite face of said rotary phaser is provided with angle graduations along the edge of the first bore.
9. The experimental mechanical all-angle variable valve timing adjusting apparatus according to claim 8, wherein the first outer circumferential position of the stationary phase device is provided with an angle scale indication line.
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 |
|---|---|---|---|
| CN202210557148.XA CN114941556B (en) | 2022-05-20 | 2022-05-20 | Mechanical full-angle variable valve timing adjusting device for experiments |
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| Publication Number | Publication Date |
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| CN114941556A CN114941556A (en) | 2022-08-26 |
| CN114941556B true CN114941556B (en) | 2024-06-04 |
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| CN202210557148.XA Active CN114941556B (en) | 2022-05-20 | 2022-05-20 | Mechanical full-angle variable valve timing adjusting device for experiments |
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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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|---|---|
| CN114941556A (en) | 2022-08-26 |
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