CN112065528B - Engine valve radial adjusting mechanism and method and valve actuating mechanism - Google Patents
Engine valve radial adjusting mechanism and method and valve actuating mechanism Download PDFInfo
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- CN112065528B CN112065528B CN202010790476.5A CN202010790476A CN112065528B CN 112065528 B CN112065528 B CN 112065528B CN 202010790476 A CN202010790476 A CN 202010790476A CN 112065528 B CN112065528 B CN 112065528B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 29
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- 238000010586 diagram Methods 0.000 description 5
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- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
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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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
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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
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
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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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
Abstract
The invention discloses a radial adjusting mechanism and a method of an engine valve and a valve actuating mechanism, wherein the radial adjusting mechanism of the engine valve comprises an execution unit, a detection unit, a driving unit and an engine control unit; the execution unit can reciprocate in the mounting hole on the valve guide pipe under the driving of the driving unit, one end of the execution unit is matched with the valve, the other end of the execution unit is connected with the driving unit, and the driving unit is electrically connected with the engine control unit; the detection unit is used for continuously monitoring the radial acting force of the valve, converting the change of the radial acting force of the valve into voltage change information and feeding the voltage change information back to the engine control unit; the engine control unit is used for adjusting the voltage of the driving unit according to the voltage change information and generating a voltage adjustment instruction; the driving unit is used for driving the execution unit to act according to the voltage adjusting instruction so as to correct the valve to the axis center of the valve oil seal. The invention can avoid eccentric wear of the valve oil seal and greatly prolong the service life of the engine.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a mechanism and a method for radially adjusting an engine valve and a valve actuating mechanism.
Background
The valve actuating mechanism is used as an important component of the engine and aims to open and close the valve at regular time according to the requirements of the working cycle and the ignition sequence of each cylinder of the engine so as to ensure that combustible mixed gas enters the cylinder in time and waste gas is discharged from the cylinder in time.
The valve train has high requirements on sealing performance, and the combustion chamber and the cylinder head cover are separated mainly by matching of the valve oil seal and the valve, so that the problems of engine oil burning, combustion deterioration, excessive emission, carbon deposition in the combustion chamber, power reduction and the like caused by the fact that a large amount of engine oil in the cylinder head cover enters the combustion chamber are solved; meanwhile, the problems of engine oil emulsification and engine oil aging caused by the fact that fuel and gas in the combustion chamber enter an engine crankcase through a cylinder head cover are solved.
The valve lifter and the valve spring drive the valve to reciprocate between the valve guide pipe and the valve oil seal, so that the valve is opened and closed.
Because the valve actuating mechanism needs to rely on the transmission of force among a plurality of spare parts such as camshaft, valve tappet, valve spring, valve pipe, valve oil seal to realize the function, the radial of valve and axial direction atress are inhomogeneous, can cause the valve to incline to a certain direction for a long time and abrade, lead to valve oil seal eccentric wear, and then arouse the problem such as machine oil burning, valve ablation, power decline, engine shake.
Along with the increase of the mileage of the engine, particularly for commercial vehicles in the market, the mileage is several times or even tens of times of that of passenger vehicles, the problem of eccentric wear of the valve oil seal of long-mileage engines in the after-sale market frequently occurs, once the eccentric wear of the valve oil seal occurs, the valve oil seal can only be replaced, and an effective solution without the eccentric wear of the valve oil seal in the market at present is provided.
Disclosure of Invention
The existing valve mechanism has the advantages that due to the fact that the multistage transmission of force exists, the problem of eccentric wear of the valve oil seal on the market frequently occurs along with the increase of the mileage of an engine, the stress of the valve oil seal deteriorates along with the increase of the mileage, the valve oil seal is finally eccentric wear, and the valve oil seal cannot be effectively adjusted by means of the structure of the valve oil seal.
In order to solve the problem of eccentric wear of the valve oil seal, the invention provides a valve radial adjusting mechanism in a first aspect, which comprises an execution unit, a detection unit, a driving unit and an engine control unit;
the actuating unit can reciprocate in a mounting hole on the valve guide pipe under the driving of the driving unit, one end of the actuating unit is matched with the valve, the other end of the actuating unit is connected with the driving unit, and the driving unit is electrically connected with the engine control unit;
the detection unit is used for continuously monitoring the radial acting force of the valve, converting the change of the radial acting force of the valve into voltage change information and feeding the voltage change information back to the engine control unit;
the engine control unit is used for adjusting the voltage of the driving unit according to the voltage change information and generating a voltage adjustment instruction;
the driving unit is used for driving the execution unit to act according to the voltage adjusting instruction so as to correct the valve to the axis center of the valve oil seal.
Further, the automobile engine also comprises an engine plug-in and a wiring harness plug-in;
the driving unit is connected with the engine plug-in unit, the engine plug-in unit is connected with the wiring harness plug-in unit, and the wiring harness plug-in unit is connected with the engine control unit.
Further, the device also comprises a lead and an engine wiring harness;
the drive unit is integrated with the engine insert through the wire, and the harness insert is connected to the engine control unit through the engine harness.
Further, the device also comprises a guide mounting groove and a mounting boss;
the guide mounting groove is arranged on the inner side wall of the mounting hole, and the length of the guide mounting groove is smaller than that of the mounting hole; the installation boss is arranged on the outer side wall of the execution unit and matched with the guide installation groove, so that the installed execution unit is well matched with the valve.
Further, the device also comprises a guide mounting groove and a mounting boss;
the installation boss sets up on the inside wall of mounting hole, the direction mounting groove sets up execution unit's lateral wall, the length of direction mounting groove is less than the length of mounting hole, the installation boss with direction mounting groove looks adaptation, so that after the installation execution unit and valve match well.
Further, the number of the execution units is at least three, and the at least three execution units are uniformly distributed along the center of the valve guide.
Further, one end of the execution unit is in a cylindrical surface matched with the valve, and the other end of the execution unit is welded with the engine control unit.
Further, the detection unit comprises a pressure sensor electrically connected with the engine control unit; the drive unit comprises a motor, and the motor is electrically connected with the engine control unit.
A second aspect of the present invention provides a valve radial adjustment method that is performed based on the valve radial adjustment mechanism provided in the first aspect of the present invention, the method including:
when monitoring the change of the radial acting force of the valve, the detection unit converts the change of the radial acting force of the valve into voltage change information and feeds the voltage change information back to the engine control unit; wherein the detection unit continuously monitors the valve radial acting force; the driving unit is in an unstressed state at an initial position;
the engine control unit adjusts the voltage of the driving unit according to the voltage change information to generate a voltage adjustment instruction;
and the driving unit drives the execution unit to act according to the voltage adjusting instruction so as to correct the valve to the axis center of the valve oil seal.
In a third aspect, the invention provides an engine valve train comprising a valve radial adjustment mechanism as provided in the first aspect of the invention.
The embodiment of the invention has the following beneficial effects:
the valve radial adjusting mechanism provided by the embodiment of the invention monitors the valve radial force and adjusts the valve to correct to the axis center of the valve oil seal on the basis of the existing valve mechanism, so that the valve oil seal is uniformly stressed, the eccentric wear of the valve oil seal is avoided, and the service life of an engine is greatly prolonged.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic cross-sectional view of an engine valve radial adjustment mechanism provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of the connection between the driving unit and the engine control unit according to the embodiment of the present invention;
FIG. 3 is a schematic illustration of an engine valve radial adjustment mechanism installation provided by an embodiment of the present invention;
FIG. 4 is a longitudinal cross-sectional view of an engine valve radial adjustment mechanism provided in accordance with an embodiment of the present invention;
FIG. 5 is a flow chart of an engine valve radial adjustment method provided by an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an engine valve train provided by an embodiment of the invention.
The engine comprises an execution unit 1, a driving unit 2, an engine control unit 3, a valve guide pipe 4, a mounting hole 5, a valve 6, a valve oil seal 7, an engine plug 8, a wire harness plug 9, a wire 10, an engine wire harness 11, a guide mounting groove 12, a mounting boss 13, a camshaft 14, a cylinder cover 15, a valve tappet 16, a valve locking clamp 17, a valve spring seat 18, a valve spring 19 and a valve seat ring 20.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be connected through the interior of two elements or in interactive relation with one another. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
FIG. 1 is a schematic cross-sectional view of an engine valve radial adjustment mechanism provided in an embodiment of the present invention. For simplicity, only those elements relevant to the subject matter described herein are shown. The overall valve radial adjustment mechanism may have many other configurations and may use many other types of elements. The present invention provides a valve radial adjustment mechanism, which can correct the valve 6 when it is off-center to avoid the eccentric wear of the valve oil seal 13, and will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, a valve radial adjustment mechanism includes an execution unit 1, a detection unit (not shown), a driving unit 2, and an engine control unit 3.
The actuating unit 1 can reciprocate in a mounting hole 5 on a valve guide pipe 4 under the driving of a driving unit 2, one end of the actuating unit 1 is matched with a valve 6, the other end of the actuating unit 1 is connected with the driving unit 2, and the driving unit 2 is electrically connected with an engine control unit 3;
the detection unit is used for continuously monitoring the radial acting force of the valve, converting the change of the radial acting force of the valve into voltage change information and feeding the voltage change information back to the engine control unit 3;
the engine control unit 3 is used for adjusting the voltage of the driving unit 2 according to the voltage change information and generating a voltage adjustment instruction;
the driving unit 2 is used for driving the execution unit 1 to act according to the voltage adjusting instruction so as to correct the axial center of the valve 6 to the valve oil seal 7.
Fig. 2 is a schematic diagram of a connection relationship between a driving unit 2 and an engine control unit 3 according to an embodiment of the present invention, referring to fig. 2, in an embodiment, the valve radial adjustment mechanism further includes an engine insert 8 and a wire harness insert 9; the drive unit 2 is integrated into the engine insert 8 by a wire 10, the engine insert 8 is connected to the harness insert 9, and the harness insert 9 is connected to the engine control unit 3 by an engine harness 11.
Fig. 3 is a schematic installation diagram of an engine valve radial adjustment mechanism provided in an embodiment of the present invention, fig. 4 is a longitudinal sectional view of the engine valve radial adjustment mechanism provided in the embodiment of the present invention, please refer to fig. 3 and fig. 4, in an embodiment, the valve radial adjustment mechanism further includes a guide installation groove 12 and an installation boss 13, and the guide installation groove 12 of the valve radial adjustment execution unit 1 is installed in cooperation with the installation boss 13 of the valve radial adjustment execution unit 1, so as to ensure that the valve radial adjustment execution unit 1 can be well matched with the valve 6 after installation; in detail, the installation boss 13 is arranged on the inner side wall of the installation hole 5, the guide installation groove 12 is arranged on the outer side wall of the execution unit 1, the length of the guide installation groove 12 is smaller than that of the installation hole 5, and the position shape of the installation boss 13 is matched with the guide installation groove 12, so that the installed execution unit 1 is well matched with the valve 6.
In another embodiment, the installation boss 13 is disposed on the inner side wall of the installation hole 5, the guide installation groove 12 is disposed on the outer side wall of the execution unit 1, the length of the guide installation groove 12 is smaller than that of the installation hole 5, and the installation boss 13 is matched with the guide installation groove 12, so that the installed execution unit 1 is well matched with the valve 6.
In detail, the number of the actuating units 1 is at least three, and the at least three actuating units 1 are uniformly distributed and installed along the center of the valve guide 4. Correspondingly, the mounting holes 5 and the driving units 2 are uniformly distributed along the center of the valve guide 4 in one-to-one correspondence with the actuating units 1.
In an alternative example, the valve radial adjusting mechanism is provided with 3 actuating units 1 which are uniformly distributed along the center of a valve guide 4, and the included angle between every two adjacent actuating units 1 is 120 degrees;
in a preferred example, with continued reference to fig. 1, the valve radial adjustment mechanism has 4 actuating units 1 uniformly distributed along the center of the valve guide 4, and the included angle between adjacent actuating units 1 is 90 °;
preferably, the valve radial adjusting mechanism has 8 actuating units 1 uniformly distributed along the center of the valve guide 4, and the included angle between the adjacent actuating units 1 is 45 degrees.
It will be understood by those skilled in the art that the foregoing examples are provided merely for illustrating embodiments of the present invention and are not to be construed as limiting the scope of the embodiments of the present invention. The number of the actuator units 1 of the valve radial direction adjustment mechanism may be set to other values according to actual needs.
With continued reference to fig. 4, one end of the actuator 1 is shaped as a cylindrical surface matching the valve 6, and the other end of the actuator 1 is welded to the engine control unit 3.
Further, the detection unit includes a pressure sensor electrically connected to the engine control unit 3; the drive unit 2 includes a motor electrically connected to the engine control unit 3.
Fig. 5 is a flowchart of an engine valve radial adjustment method according to an embodiment of the present invention, and referring to fig. 5, the engine valve radial adjustment method according to the embodiment of the present invention is performed based on the above-mentioned engine valve radial adjustment mechanism embodiment, and the method includes the following steps:
s1: when monitoring the change of the radial acting force of the valve, the detection unit converts the change of the radial acting force of the valve into voltage change information and feeds the voltage change information back to the engine control unit 3; wherein the detection unit continuously monitors the valve radial acting force; when the valve 6 deviates from the center and deviates to a certain side, the side detection unit monitors the valve radial acting force and feeds back the voltage change caused by the change of the valve radial acting force to the engine control unit 3.
S2: the engine control unit 3 adjusts the voltage of the driving unit 2 according to the voltage change information to generate a voltage adjustment instruction;
s3: the driving unit 2 drives the execution unit 1 to act according to the voltage adjustment instruction sent by the engine control unit 3 so as to correct the axial center of the valve 6 to the valve oil seal 7. The driving unit 2 adjusts voltage according to the voltage adjustment instruction, the voltage change caused by adjustment drives the driving unit 2 to correct the position of the valve 6, so that the valve 6 returns to the axial center position of the valve oil seal 7, meanwhile, the driving unit 2 continues to monitor the radial acting force of the valve 6, and finally, the valve 6 and the valve oil seal 7 are kept in uniform contact all the time.
Fig. 6 is a schematic structural diagram of an engine valve actuating mechanism according to an embodiment of the present invention, please refer to fig. 6, a camshaft 14 of the engine valve actuating mechanism according to the embodiment of the present invention is rotatably mounted on a cylinder head 15, a valve tappet 16 is capable of reciprocating in the cylinder head 15, a valve guide 4 is mounted in the cylinder head 15 in an interference connection manner, a valve oil seal 7 is mounted on the valve guide 4 in an interference connection manner, a valve collet 17 is engaged with a collet groove of the valve 6, a valve spring seat 18 is connected with the valve collet 17 in a wedge-shaped manner, a valve spring 19 is always connected with a bottom surface of the valve spring seat 18 in a compression state, so that the valve 6 is always subjected to a compression force of the spring, the valve 6 and the valve guide 4 are in a clearance fit, the valve 6 and the valve oil seal 7 are in an interference fit manner, and a valve.
The valve tappet 16 reciprocates along with the rotation of the camshaft 14, and the valve 6 is always compressed by the spring under the coordination of the valve collet 17, the valve spring seat 18 and the valve spring 19, so that the valve 6 finally reciprocates between the valve guide pipe 4 and the valve oil seal 7, the valve 6 disc of the valve 6 is matched with the valve seat ring 20, and the opening and the closing of the valve 6 are realized. The valve oil seal 7 is in interference connection with the valve 6, the part above the valve oil seal 7 is communicated with a crankcase of the engine, and the part below the valve oil seal 7 is communicated with a combustion chamber when the valve 6 is opened.
The valve radial adjusting mechanism is additionally arranged on the basis of the valve actuating mechanism of the engine, the valve radial adjusting mechanism is arranged around the axis of the valve guide pipe 4 and can monitor the radial force of the valve, when the valve 6 is monitored to deviate from the center to one side, the radial adjusting mechanism distributed on the side can carry out radial adjustment on the valve 6, so that the valve 6 is corrected to the center of the axis of the valve oil seal 7, the valve oil seal 7 is uniformly stressed, eccentric wear of the valve oil seal 7 is avoided, and the durability of the valve actuating mechanism of the engine is improved.
As can be seen from the above embodiments of the engine valve radial adjusting mechanism, the engine valve radial adjusting method and the valve actuating mechanism provided by the invention, the valve radial adjusting mechanism is added on the basis of the existing valve actuating mechanism, and the valve radial force is monitored and the valve 6 is adjusted to be corrected to the axis center of the valve oil seal 7, so that the valve oil seal 7 is uniformly stressed, the eccentric wear of the valve oil seal 7 is avoided, and the service life of the engine is greatly prolonged.
It should be noted that: the precedence order of the above embodiments of the present invention is only for description, and does not represent the merits of the embodiments. And specific embodiments thereof have been described above. Other embodiments are within the scope of the following claims. The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, with respect to the radial adjustment method and the engine valve train embodiment, since they are substantially similar to the radial adjustment mechanism embodiment, the description is relatively simple and, where relevant, reference may be made to some of the description of the method embodiment.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.
While embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications and variations may be made therein by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The engine valve radial adjusting mechanism is characterized by comprising an execution unit (1), a detection unit, a driving unit (2) and an engine control unit (3);
the actuating unit (1) can reciprocate in a mounting hole (5) on a valve guide pipe (4) under the driving of the driving unit (2), one end of the actuating unit (1) is matched with a valve (6), the other end of the actuating unit (1) is connected with the driving unit (2), and the driving unit (2) is electrically connected with the engine control unit (3);
the detection unit is used for continuously monitoring the radial acting force of the valve, converting the change of the radial acting force of the valve into voltage change information and feeding the voltage change information back to the engine control unit (3);
the engine control unit (3) is used for adjusting the voltage of the driving unit (2) according to the voltage change information and generating a voltage adjustment instruction;
the driving unit (2) is used for driving the execution unit (1) to act according to the voltage adjusting instruction so as to correct the axial center from the valve (6) to the valve oil seal (7).
2. Valve radial adjustment mechanism according to claim 1, characterized by further comprising an engine insert (8) and a wiring harness insert (9);
the drive unit (2) is connected with the engine plug-in (8), the engine plug-in (8) is connected with the wiring harness plug-in (9), and the wiring harness plug-in (9) is connected with the engine control unit (3).
3. Valve radial adjustment mechanism according to claim 2, characterized by further comprising a wire (10) and an engine harness (11);
the drive unit (2) is integrated into the engine insert (8) by means of the conductor (10), and the harness insert (9) is connected to the engine control unit (3) by means of the engine harness (11).
4. Valve radial adjustment mechanism according to claim 1, characterized by further comprising a guide mounting groove (12) and a mounting boss (13);
the guide mounting groove (12) is arranged on the inner side wall of the mounting hole (5), and the length of the guide mounting groove (12) is smaller than that of the mounting hole (5); the mounting boss (13) is arranged on the outer side wall of the execution unit (1), and the mounting boss (13) is matched with the guide mounting groove (12) so that the execution unit (1) after being mounted is well matched with the air valve (6).
5. Valve radial adjustment mechanism according to claim 1, characterized by further comprising a guide mounting groove (12) and a mounting boss (13);
installation boss (13) set up on the inside wall of mounting hole (5), direction mounting groove (12) set up the lateral wall of execution unit (1), the length of direction mounting groove (12) is less than the length of mounting hole (5), installation boss (13) with direction mounting groove (12) looks adaptation, so that after the installation execution unit (1) match well with valve (6).
6. Valve radial adjustment mechanism according to claim 1, characterized in that the number of the actuator units (1) is at least three, at least three of the actuator units (1) being evenly distributed along the centre of the valve guide (4).
7. Valve radial adjustment mechanism according to claim 1, characterized in that one end of the actuator unit (1) is shaped as a cylinder face matching the valve (6) and the other end of the actuator unit (1) is welded to the engine control unit (3).
8. Valve radial adjustment mechanism according to claim 1, characterized in that the detection unit comprises a pressure sensor which is electrically connected with the engine control unit (3); the drive unit (2) comprises a motor which is electrically connected with the engine control unit (3).
9. An engine valve radial adjustment method, characterized in that the method is performed based on the valve radial adjustment mechanism of any one of claims 1 to 8, the method comprising:
when monitoring the change of the valve radial acting force, the detection unit converts the change of the valve radial acting force into voltage change information and feeds the voltage change information back to the engine control unit (3); wherein the detection unit continuously monitors the valve radial acting force; the driving unit (2) is in an unstressed state at an initial position;
the engine control unit (3) adjusts the voltage of the driving unit (2) according to the voltage change information to generate a voltage adjustment instruction;
the driving unit (2) drives the execution unit (1) to act according to the voltage adjusting instruction so as to correct the axial center from the valve (6) to the valve oil seal (7).
10. An engine valve train comprising a valve radial adjustment mechanism according to any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010790476.5A CN112065528B (en) | 2020-08-07 | 2020-08-07 | Engine valve radial adjusting mechanism and method and valve actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010790476.5A CN112065528B (en) | 2020-08-07 | 2020-08-07 | Engine valve radial adjusting mechanism and method and valve actuating mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN112065528A CN112065528A (en) | 2020-12-11 |
| CN112065528B true CN112065528B (en) | 2021-06-29 |
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| CN202010790476.5A Active CN112065528B (en) | 2020-08-07 | 2020-08-07 | Engine valve radial adjusting mechanism and method and valve actuating mechanism |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2705081A1 (en) * | 1977-02-08 | 1978-08-10 | Heinz Konrad Prof Dr I Mueller | IC engine valve shaft sealing assembly - has rigid PTFE quadrilateral ring abutting shaft along circular line pressed against wall of housing by soft rubber ring |
| DE2753996A1 (en) * | 1977-12-03 | 1979-06-07 | Bruss Dichtungstechnik | IC engine elastomer valve stem seal - has radial corrugations graded to give correct pressure over range of diameters |
| JPH05209798A (en) * | 1992-01-31 | 1993-08-20 | Mazda Motor Corp | Valve seat load sensor |
| JP4373761B2 (en) * | 2003-10-21 | 2009-11-25 | 日野自動車株式会社 | Valve guide structure |
| EP1582704A1 (en) * | 2004-04-02 | 2005-10-05 | Corcos Industriale S.p.A. | Valve seal assembly |
| CN102477875B (en) * | 2010-11-30 | 2015-03-25 | 比亚迪股份有限公司 | Valve driving mechanism for internal combustion engines |
| CN103759629B (en) * | 2014-01-20 | 2017-06-23 | 杭州电子科技大学 | Engine valve is taken a seat radial deflection measurement apparatus and method |
| DE102016222280A1 (en) * | 2016-11-14 | 2018-05-17 | Man Diesel & Turbo Se | Gas exchange valve for an internal combustion engine and internal combustion engine |
| CN207004593U (en) * | 2017-04-28 | 2018-02-13 | 福特环球技术公司 | sealing structure for vehicle |
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2020
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Address after: 322003 No.1 Jixiang Road, Chian Town, Yiwu City, Jinhua City, Zhejiang Province Patentee after: ZHEJIANG FENGRUI ENGINE Co.,Ltd. Patentee after: Aurora Bay Technology Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 322003 No.1 Jixiang Road, Chian Town, Yiwu City, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG FENGRUI ENGINE Co.,Ltd. Patentee before: ZHEJIANG GEELY POWER ASSEMBLY Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
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Effective date of registration: 20231115 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee after: Zhejiang liankong Technology Co.,Ltd. Address before: 322003 No.1 Jixiang Road, Chian Town, Yiwu City, Zhejiang Province Patentee before: ZHEJIANG FENGRUI ENGINE Co.,Ltd. Patentee before: Aurora Bay Technology Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |